HomeMy WebLinkAbout1.0 ApplicationENCANA..
SPECIAL USE PERMIT
APPLICATION
MIDDLE FORK WATER STORAGE
FACILITY
GARFIELD COUNTY
COLORADO, USA
WAGON WHEEL CONSULTING
111 E. Third St, Suite 213
Rifle, CO 81650
(970) 625-8433
Part I Project Description
The North Parachute Ranch Water Storage Facility will be used by EnCana Oil and Gas
(USA), Inc. (EnCana) to store produced water from natural gas wells drilled within the
North Parachute Ranch (NPR) property and to store fresh water from the Colorado River.
The drilling, completion, and production operations of natural gas wells generate
brackish water commonly referred to as produced water. A portion of the produced water
from EnCana well sites within the NPR will be stored for reuse. This recycled water can
then be used for continued well drilling and completion work, thereby reducing the
demand on fresh water supplies.
The NPR Water Storage Facility will be constructed as a single pond with a capacity of
approximately 215,000 barrels. Produced water will be transported by pipelines or trucks
to an existing water storage tank located north of the Water Storage Facility. Initial water
treatment will occur at the storage tank, this will primarily consist of skimming to remove
petroleum constituents. Produced water will then be sent via pipeline to the Water
Storage Facility. During the life of the facility, it is possible that an electronic water
treatment system may be used to lower the Total Dissolved Solids (TDS) of the produced
water supply to well below 3,000 parts per million (ppm). Existing pipelines will be used
to supply water for the former oil shale operations will be used to supply fresh water from
either Parachute Creek or the Colorado River.
A pump will be used to transfer water to or from water -hauling tank trucks at the facility.
A building will enclose the water pump and associated electrical controls. The pump
building protects the control systems from weather and corrosion as well as providing
sound damping for the water pump. The expected footprint size of the building is 10 feet
by 10 feet and will be located at thetile,,f end of the storage pond, in the facility access
road area. The building is a static structure and integral part of the finished facility. As
such, it will have the same general characteristics as other permanent structures at the
site, in terms of use and hours of operation. An air pollution emission notice will be filed
with the Colorado Department of Public Health and Environment when specifics of the
pump engine are known and as such, the operation of this engine will comply with State
and Federal regulations.
The facility will be permitted concurrently under the authority of the Colorado Oil and
Gas Conservation Commission The process for obtaining the centralized E&P waste
management facility permit is currently under way. EnCana will maintain compliance
with the conditions of the County and State authorizations and the operator must be
familiar with the conditions placed on operation of the facility.
Part II Impact Statement
The location for the new facility was selected for a number of beneficial reasons. The
proposed location is within an area formerly used for oil shale processing and is central to
existing access roads within the NPR. This will shorten truck trips and lessen the need
for truck travel off the NPR to other facilities located closer to Parachute or Rifle. The
storage facility does not differ significantly from the past oil shale processing and current
surrounding oil and gas exploration and production related land uses. The location is
relatively remote. The nearest residence is located approximately 3 miles south of the
site. A water storage pond presents relatively benign effects in terms of noise, odor, dust,
and visual impact and sufficient distance exists to provide protection to surrounding
properties from the minimal impacts of this facility.
The facility will be in continuous use and operation 24 -hours per day, year-round.
However, the majority of activity at the facility will occur during normal business hours.
At maximum usage the facility is expected to require an average of approximately 10
water tanker truck trips per day into and out of the new facility. The majority of these
trips will be on existing private roads that already service natural gas operations within
the NPR. Water trucks will operate primarily during daylight hours and will be traveling
to and from well locations in the area. Heavy trucks already travel the roads in the North
Parachute area, therefore the new facility is not expected to require specific
improvements to the existing roads. Need to provide an estimate of vehicles accessing
the site each day.
The water pump at the facility is expected to emanate low-level noise and possibly
minimal amounts of vibration. The planned pump building will aid in mitigating this
noise and vibration. The sound level of noise emanating from the facility will not exceed
the 75 decibel maximum set forth in Colorado Revised Statute 25-12-103. Given the
remote location of the new facility, noise will not be a nuisance to area residents. The
vibration, if any, should be localized to a small area immediately surrounding the pump.
If, in the unlikely event, nuisance noise, vibration, or odors are emanated by the facility,
additional measures will be taken to control them.
This facility is designed to protect groundwater and surface water resources. The storage
pond will be double -lined with impermeable high-density polyethylene (HDPE) liner.
The initial volume of fresh water and periodic supplement of fresh water supply will be
taken from existing water wells on the NPR or from the Colorado River water intake
(need to provide well permit and other legal water supply information) A water
supply system already exists on the property and was used to supply previous oil shale
activities. This system includes wells, pumps, and pipelines. The facility design will
preclude any pollution to enter surface run-off. There will be no sewage or solid waste
generated on the site.
Need to provide a copy of the deed and legal description of the property. Need an
agent authorization letter from EnCana for Wagon Wheel and/or Cordilleran.
The storage pond will be surrounded by a c,' field fence (wood posts with wire
mesh panels). The fencing includes steel gates for personnel access. The gates are
typically closed at all times to prevent unauthorized access. A security gate and guard
shack are located at the end of County Road 215 near the property boundary. A guard is
posted at the gate during peak operating hours and after hours the gate is locked. The
security gate precludes public access to the site. The adjacent property characteristics
and surrounding land uses are such that a visible barrier fence should not be necessary.
Signage includes the company name and address as well as a 24-hour toll-free emergency
phone number.
The NPR Water Storage facility will occupy about 2 acres of an approximately 27,000 -
acre parcel. According to wildlife distribution maps from the Colorado Department of
Wildlife, the site is located on winter rangeland for mule deer, elk and turkey. This type
of facility is by nature incompatible with continued wildlife access therefore wildlife will
be excluded by wildlife -proof fencing. The limited size of the facility will not block
wildlife migration routes. The water to be stored at the site is not expected to be an
attraction or a threat to waterfowl, but a deterrence system will be installed if waterfowl
usage does occur.
All equipment will be painted in a beige color to match the surrounding terrain. Visual
impact to the area will be negligible due to the minimal amount of surface equipment at
the site. Electrical power will be installed at the facility to power the pumping
equipment. No other public utilities will be needed at the facility.
The expected life of the NPR Water Storage Facility is 20 years. Reclamation of the
facility is outlined in Part VII of this document.
Garfield County
Building & Planning Department
108 8th Street, Suite 201
Glenwood Springs, CO 81601
Attn Mr. Fred A. Jarman, AICP
RE: SUP for Processing and Material Handling of Natural Resources
Dear Mr. Jarman,
We have received your request for additional information on the referenced SUP
application for EnCana's water storage pond at the North Parachute Ranch. For your
reference, the County's requests appear in italic type and are followed by our response in
normal type:
1. Please submit, in narrative form, the nature and character of the Special Use
requested. Submit plans and supporting information (i.e. letters from responsible
agencies). Include specifications for the proposed use including, but not limited to, the
hours of operation, the number and type of vehicles accessing the site on a daily, weekly,.
and/or monthly basis, and the size and location of existing and/or proposed
structures that will be used in conjunction with the proposed use, and provisions for
electric power service and anv otherproposed utility improvements. Be specific.
The water storage pond operation and condition will be checked as least once per day.
This daily check will likely be conducted by site personnel who spend the majority of
their work shift at the North Parachute Ranch (NPR). At most, routine operation of the
water storage pond will require 2 round trips per day of a pickup or similar vehicle from
Parachute to the NPR.
All motors and pumps will be electrically driven. The source of the electric power supply
is currently being negotiated with Excel Energy and American Soda. It is anticipated that
electric power will become available by July or August, 2005. EnCana plans to use
diesel/generator power on a temporary basis until the permanent source has been
installed.
2. If you will be using water or will fie treating wastewater in conjunction with the
proposed use, please detail the amount of water that would be used and the type of
wastewater treatment. If you will be utilizing well water, please attach a copy of the
appropriate well permit and any other legal water supply information, including a water
allotment contract or an approved water augmentation plan to demonstrate that you have
legal and adequate water for the proposed use. Your submittal contained no legal water
information regarding the water rights which allow you to pull waterfrom the Colorado
River to send to the storage facility. Please address this.
The SUP application was inadvertently sent with information from an early phase of
project planning. The water storage pond will not be storing freshwater from either the
Colorado River or Parachute Creek. The water storage pond will only store Exploration
& Production (E&P) waters that come from or have been in contact will the well. A
corrected cover page for the SUP application is attached.
3. Submit a copy of the appropriate portion of a Garfield County Assessor's Map
showing all mineral rights owners of the subject property and public and private
landowners adjacent to you property (which should be delineated). In addition, submit a
list of all property owners and their addresses adjacent to or within 200 ft of the site.
This information can be obtained from the Assessor's Office.
See Attachment
4. Submit a copy of the deed and a legal description of the subject property.
See Attachment
5. If you are acting as an agent for the property owner, you must attach an
acknowledgement from the property owner that you may act in his/her behalf
See Attachment
6. Submit an statement that specifically responds to each of the following criteria from
Section 5.03 of the Zoning Regulations:
(1) Utilities adequate to provide water and sanitation service based on accepted
engineering standards and approved by the Board of County Commissioners
shall either be in place or shall be constructed in conjunction with the
proposed use.
Negotiations are currently underway with Excel Energy and American Soda for the
utilization of existing power infrastructure along with plans to extend the current system
onto EnCana Property. EnCana plans to use a diesel powered generator in the interrum
period.
(2) Street improvements adequate to accommodate traffic volume generated by
the proposed use and to provide safe, convenient access to the use shall either
be in place or shall be constructed with the proposed use.
It is anticipated 2 round trips of a pickup and 10 water tanker truck trips per day from
Parachute to the NPR will be required for routine operation of the storage pond. Heavy
trucks already routinely travel on County Road 215 and these additional vehicle trips are
not expected to result in any significant change in the volume of traffic currently found
on County Road 215. Therefore, no street improvements are anticipated or proposed as
part of this special use.
(3) Design of the proposed use is organized to minimize impact on and from
adjacent used of land through installation of screen fences or landscape
materials on the periphery of the lot and by location of intensively utilized
areas, access points, lighting and signs in such a manner to protect
established neighborhood character.
The water storage pond will be inside of a soil embankment. The external embankment
slopes will be vegetated after the pond is constructed. The pond will be located
approximately 0.3 miles from the nearest publicly accessible location (security gate).
The pond is within an area formerly used for oil shale mining and processing. Current
land use in the area is primarily natural gas development with some livestock grazing.
The water storage pond is not expected to change the established neighborhood character.
7. Depending on the type of Special Use Permit requested, you are required to
specifically respond to the following additional review standards in Section 5:00 of the
Garfield County Zoning Resolution of 1978, as amended:
Section 5.03.07 (Industrial Operations]
Pursuant to Section 5.03.07 of the Zoning Resolution, a permit for Industrial Operations
requires the submittal of an impact statement on the proposed use describing its location,
scope, design and construction schedule, including an explanation of its operational
characteristics. The impact statement is required to specifically address each of the
following:
(A) Existing lawful use of water through depletion or pollution of surface run-off,
streamflow or ground water.
The water storage pond will store only produced water associated with drilling,
completion, and development of natural gas wells. No fresh water will be stored in the
pond. The pond is designed to operate as a no discharge facility and 2 feet of freeboard
will be maintained within the pond therefore, no discharge to surface water should occur.
The pond is designed with a double liner of geosynthetic materials and an internal leak
detection and recovery system. The geosynthetic liner system will be placed over a 12 -
inch thick bentonite (low permeability clay) amended and compacted soil liner. No
discharge to ground water is anticipated.
(B) Impacts on adjacent land from the generation of vapor, dust, smoke, noise, glare
or vibration, or other emanations.
The operation of the water storage pond is next expected to generate any levels of vapor,
dust, smoke, noise, glare or vibrations that would impact adjacent land.
(C) Impacts on wildlife and domestic animals through the creation of hazardous
attractions, alteration of existing native vegetation, blockade of migration routes, use
patterns or other disruptions.
The water storage pond will be surrounded by a 6 -foot tall game or woven wire fence to
prevent wildlife or domestic animals accessing the pond. The area of the proposed pond
was formerly used for support of oil shale mining and processing facilities. As such, the
area has been previously disturbed and native vegetation removed. The constructed pond
will occupy approximately 'A of the width of the East Fork of Parachute Creek valley and
will not block migration routes. The pond is not expected to result in any change of
wildlife use patterns or other disruptions to wildlife within the North Parachute Ranch.
The only anticipated affect to wildlife from the proposed pond is exclusion from the
approximately 3 acre pond site.
(D)Affirmatively show the impacts of truck and automobile traffic to and from such
used and their impacts to areas in the County.
For normal pond operation, it is anticipated that 2 round trips of a pickup will occur
between Parachute and the NPR. Given the current traffic volume on County Road 215,
the increase of 2 round trips per day will result in no noticeable change to the total traffic
volume. These 2 round trips per day are expected to have no impact to this area of
Garfield County.
(E) That sufficient distances shall separate such use from abutting property which
might be otherwise damaged by operations of the proposed use(s).
The nearest adjoining property is located approximately 1 mile south of the proposed
water storage pond. Operation of the proposed water storage pond is not expected to
produce noticeable effects at this property.
(F) Mitigation measures proposed for all of the foregoing impacts identified and for
the standards identified in Section 5.03.08 of this Resolution.
Special Use Permits may be granted for those uses with provisions that provide adequate
mitigation for the following:
(A) A plan for site rehabilitation that must be approved by the County Commissioners
before a permit for conditional or special use will be issued;
After the water storage pond is no longer needed, the area will be reclaimed.
Reclamation will consist of the removal of all surface equipment and liner materials,
restoration of grade to approximate original contours, replacing stockpiled topsoil,
vegetating, and complying with all prevailing COGCC and Garfield County regulations
governing final reclamation.
(B) The County Commissioners may require security before a permit for special or
conditional use is issued, if required. The applicant shall furnish evidence of a bank
commitment of credit, bond, certified check or other security deemed acceptable by
the County Commissioners in the amount calculated by the County Commissioners to
secure execution of the site rehabilitation plan in workmanlike manner and in
accordance with the specifications and construction schedule established or
approved by the County Commissioners. Such commitments, bonds or check shall be
payable to and held by the County Commissioners;
The proposed water storage pond is also being permitted through the Colorado Oil and
Gas Conservation Commission (COGCC). EnCana has provided Financial Assurance to
the COGCC for the purpose of ensuring the proper reclamation and closure of the
proposed pond.
(C) Impacts set forth in the impact statement and compliance with the standards
contained in Section 5.03.08 of this Resolution.
Section 5.03.08 [Industrial Performance Standards]
Pursuant to section 5.03.08 of the Zoning Resolution, all Industrial Operations in the
County shall comply with applicable County, State, and Federal regulations regulating
water, air and noise pollution and shall not be conducted in a manner constituting a
public nuisance or hazard. Operations shall be conducted in such a manner as to
minimize heat, dust, smoke, vibration, glare and odor and all other undesirable
environmental effects beyond the boundaries of the property in which such uses are
located, in accord with the following standards:
1) Volume of sound generated shall comply with the standards set forth in the Colorado
Revised Statues at the time any new application is made.
The electrically powered pump that will be used for water management will be located
inside a building. The sound level of noise emanating from the facility will not exceed
the 75 decibel maximum set forth in Colorado Revised Statute 25-12-103.
2) Vibration generated: every use shall be so operated that the ground vibration
inherently and recurrently generated is not perceptible, without instruments, at any
point of any boundary line of the property on which the use is located.
The only part of the water storage pond that is expected to produce vibration is operation
of the electric pump motor. Any vibrations will likely be attenuated within the pump
building. No vibration at the nearest adjoining property (approximately 1 mile south of
the pond) is anticipated.
3) Emissions of smoke and particulate matter: every use shall be operated so as to
comply with all Federal State and County air quality laws, regulations, and
standards.
Operation of the water storage pond is expected to no result in emission of smoke or
particulate matter.
4) Emission of heat, glare, radiation and fumes: every use shall be so operated that it
does not emit heat, glare, radiation or fumes which substantially interfere with the
existing use of adjoining property or which constitutes a public nuisance or hazard.
Flaring of gases, aircraft warning signals, reflective painting of storage tanks, or
other such operations which may be required by laws as safety or air pollution
control measures shall be exempted from this provision.
No emissions of heat, radiation, or fumes are expected to result from operation of the
water storage pond. The pond will be contained within an earthen embankment and any
glare from sunlight off the water surface is expected to reflect in an upward direction and
should not be noticeable by adjacent properties which are primarily located south of the
pond at a lower elevation.
5) Storage area, salvage yard, sanitary landfill and mineral disposal areas:
(A) Storage offlammable or explosive solids or gases shall be in accordance with
accepted standards and laws and shall comply with the national, state and local fire
codes and written recommendations/comments from the appropriate local protection
district regarding compliance with the appropriate codes;
No storage of flammable or explosive solids or gases is anticipated to occur in association
with the proposed special use. If needed, these materials shall be stored in accordance
with accepted standards and laws and shall comply with the national, state and local fire
codes and written recommendations.
(B) At the discretion of the County Commissioners, all outdoor storage facilities may
be required to be enclosed by fence, landscaping or wall adequate to conceal such
facilities from adjacent property;
(C) No materials or wastes shall be deposited upon a property in such form or
manner that they may be transferred off the property by any reasonably foreseeable
natural causes or forces;
The proposed water storage facility is designed as a no discharge facility and will be
operated to maintain a minimum of 2 feet of freeboard. No uncontrolled release of stored
water from the pond is foreseeable.
(D) Storage of Heavy Equipment will only be allowed subject to (A) and (C) above
and the following standards:
1) The minimum lot size is five (5) acres and is not a platted subdivision.
2) The equipment storage area is not placed any closer than 300 ft from any
existing residential dwelling.
3) All equipment storage will be enclosed in an area with screening at least eight
(8) feet in height and obscured from view at the same elevation or lower.
Screening may include berming, landscaping, sight obscuring fencing or a
combination of any of these methods.
4) Any repair and maintenance activity requiring the use of equipment that will
generate noise, odors or glare beyond the property boundaries will be
conducted within a building or outdoors during the hours of 8 a.m. to 6 p.m.,
Mon. — Fri.
5) Loading and unloading of vehicles shall be conducted on private property and
may not be conducted on any public right-of-way.
No heavy equipment storage will occur in association with operation of the water storage
pond.
(E) Any storage area for uses not associated with natural resources, shall not exceed
ten (10) acres in size.
The water storage pond is associated with the development and production of natural gas,
a natural resource. The area of the pond facility is approximately 3 acres.
(F) Any lighting of storage areas shall be pointed downward and inward to the
property center and shaded to prevent direct reflection on adjacent property.
No lighting of the water storage pond is anticipated for routine operation. Lighting will
be installed at the pump building and will likely include only 1 relatively small outside
and inside lighting as needed to provide a safe work environment.
6) Water pollution: in a case in which potential hazards exist, it shall be necessary to
install safeguards designed to comply with Regulation of the Environmental
Protection Agency before operation of the facilities may begin. All percolation tests
or ground water resource tests as may be required by local or State Health Officers
must be met before operation of the facilities may begin.
The water to be stored within the pond is classified as "produced water." This is water
that has come from a well or has been in contact with the well. Produced water is
classified as an Exploration and Production (E&P) was material and as such is subject to
the regulatory authority of the Colorado Oil and Gas Conservation Commission
(COGCC). Neither the U.S. Environmental Protection Agency (EPA) or the Colorado
Department of Public Health and Environment have regulatory jurisdiction over the
proposed pond. The proposed pond is being concurrently permitted through the Garfield
County Special Use and the COGCC Centralized E&P facility processes.
Hopefully, this submittal adequately addresses all concerns that Garfield County Building
& Planning Department has on the Special Use Permit application for EnCana's proposed
water storage pond at the North Parachute Ranch. Please do not hesitate to contact me if
you have any questions, comments or concerns on this submittal or the proposed project.
Respectfully Submitted,
Jimmy Smith
Wagon Wheel Consulting
attachement
GARFIELD COUNTY
Building & Planning Department
108 8th Street, Suite 201
Glenwood Springs, Colorado 81601
Telephone: 970.945.8212 Facsimile: 970.384.3470
www.garfield-county.com
Special Use Permit
GENERAL INFORMATION
(To be completed by the applicant.)
> Street Address / General Location of Property: Approximately 10 miles north of
Parachute on CR 215. 10652 Garfield CR 215, Parachute, CO 81635
➢ Legal Description: SW1/4 of SW1/2, Section 30, Township 5 South, Range 95 West,
6th Principal Meridian.
➢ Existing Use & Size of Property in acres: Rangeland, oil & gas exploration, 27,000 acres.
➢ Description of Special Use Requested: Operation of water storage pond. The facility
will store produced water from operations on the North Parachute Ranch and fresh water
from Parachute Creek or the Colorado River for drilling and completion operations.
➢ Zone District: ILL V:,ri1;.\ G,
➢ Name of Property Owner (Applicant): EnCana Oil & Gas (USA) Inc. (owner & operator)
➢ Address: 792 Buckhorn Drive Telephone: (970) 625-4209
> City: Rifle State: CO Zip Code: 81650 FAX: (970) 625-4636
➢ Name of Owner's Representative. if any (Attorney, Planner, etc):
Jimmy Smith, Wagon Wheel Consulting
' Address: 111 East 3rd Street, Suite 213
' City: Rifle State: CO Zip Code: 81650
Telephone: (970) 625-8433
FAX: (970) 625-8435
> Doc. No.:
Y Planner: •
Nil/0mA
STAFF USE ONLY
Date Submitted: Z
Hearin. Date:
TC Date:
FEB -03-2005 THU 11:05 AM
C74
FAX NO. P. 02
State of Colorado
Oil and Gas Conservation Commission
1120 t incoln Street. Suite 891, Omer, Colorado 80203: 13U3} 894-2100 Fax 894.2109
PERFORMANCE BOND
r80ND NO: RLB0007900 . This bond is a perpetual i
instrument which shall remain in force and affect until all obligations have been met and
the bond is released by the Colorado Oil and Gas Conservation Commission.
KNOWALd_ PERSONS BY THESE PRESENTS, That We, I nCana Oil S Gas (USA) Inc. of
the County of Denver in the State of Colorado as principals,
and RLI Insurance Company , as surety, authorized to do business in the State of Colorado,
are held hereby and firmly bound unto the State of Colorado, in the penal sum of ($50,000.00
Fifty Thousand and no/100 -- Dollars, lawful money of the United States, for the faithful payment of which
we hereby bind ourselves, our heirs, executors, administrators and assigns.
�r n asec uet rarer
OGCC Over. Na
FATS No:
The condition of this obligation is that whereas the above bounden principals propose the following oil and gas operation
on Lands situated in the State of Colorado.
Type of Bond
Plugging
Surface
Seismic
ESP Waste Facilty
Lf 1 Downstream Gas
LJ Facilities
Coverage
Blanket
Individual
0 Plugging 1 well
❑ Surface for 1 well
0 Irrigated
0 Non -irrigated
Excess Inactive Wells
Location
Complete -for Individual Bonds
Was Name and Number:
Owner of lands where off-site land -treatment faulty is Wanted:
Oar, See, Twp. Rng, Meridian:
County:
NOW, THEREFORE, if the above bounden principals shall comply with alt of the provisions of the laws of the State
of Colorado and the rules, regulations and requirements of the ON and Gas Conservation Commission of the State of
Colorado, with reference to properly plugging of said well or wells; with reference to land damages and the restoration of the
land, as nearly as possible, to its condition at the beginning of the lease; with reference to seismic operations the proper
surface restoration and plugging of any shot holes, then this obligation is void; otherwise, the same shall be and reniairi in lull
farce and effect Witness our hands, this 27 d . of Janud,rr , 2005
. h.
Principal: EnCana Oil 6 Gas (USA) Inc.
Address: 370'17th Street, Suite 1700
City: Denver State: CO Zip:80202
Phone: 303-389-5000
Signed: /��
Name Printed: LJ «r-r,i,`
q1'1urn 71.1
Witness our hands is 27 27 d. of
/+�
Signed: C
Name Printed: Paul N. O'Sullivan, • Attorney --in -Face
Surety: RLI Insurance Company
Address: 8 Greenway Plaza, Suite 400
City; tfouston Stair: TX -Zip: 77046
Phone: 713-961-1300
January , 2005
Approved:
Dated:
Director, Oil and Gas Conservation Commission
Bond Release
Approved:
Release Date:
Director. 011 and Garr Coneervation Commission
FEB -03-2005 THU 11:05 AM
RLI
RU Mlwranee Company 9025 NOM Lindbergh Or.
Peoria, 1161915.1499 Ph. (309) 692.1000
Know Alt Men by These Presents.?
FAX NO. P. 03
RLB0007900
POWER OF ATTORNEY
RLI Insurance Company
That the RLI INSURANCE COMPANY, a corporation organized and existing under the laws of the State of Illinois,and authorized and licen:, ed
to do business in all states and the District of Columbia does hereby make, constitute and appoint: PAlilJ. Q'SUL.LIVAN
in the City of HOUSTON, State of TEXAS , as Attorney -in -Fact, with full power and authority hereby conferred upon him to s'srn,
execute. acknowledge and deliver for and on its behalf as Surety and as its act and deed. all of the following classes of documents to -wit:
$50,000.00
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The RLI INSURANCE COMPANY further certifies that the following is a true and exact copy of a Resolution adopted by the Board of
Directors of RLI Insurance Company, and now in force to -wit:
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IN WITNESS WHEREOF, the KU Insurance Company has caused these presents to be executed by its
corporate seal affixed this
ATTEST!
Cnrporbtes Secretary
State of Illinois )
) SS
County of Peoria )
PRESIDENT. CEO with its
MA INSURANCE COMPANY
President, COE
On this 27 day of Jan. 2005 before me, a Notary Public, personally appeared Michel J. Stone and CamillaHensen, who being by n .e
duly sworn. acknowledged that they signed the above Power of Attorney as President, CEO and Corporate Secretary, respectively, of the said R1 d
INSURANCE COMPANY, and acknowledged said instrument to be the voluntary act and decd of said corporation.
Notary Public
diq
Uics 9O4 (03/091
February 22, 2005
Fred A. Jarman, AICP
Garfield County
Building & Planning Department
108 8th Street, Suite 201
Glenwood Springs, CO 81601
RE: Agent Authorization
Mr. Jarman,
ocoNo
oast '
RososyuktOG
Wagon Wheel Consulting, Inc. (Wagon Wheel) has been retained by EnCana Oil and Gas (USA),
Inc. to request a Garfield County Special Use Permit for a produced water storage pond at North
Parachute Ranch property located north of Parachute, Colorado.
1 authorize Wagon Wheel to act as agent on my behalf. Please call me at (970) 263-5402 or
Wagon Wheel at (970) 625-8433 if you have any questions or concerns.
Sincerely,
*<#0- 3 -10 -c75 -
Doug
-JO-OS
Doug Rosa
Field Operations Supervisor
EnCana Oil & Gas (USA), Inc.
cc: Jimmy W. Smith, Wagon Wheel
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Delaware
The First State
PAGE 1
I, HARRIET SMITH WINDSOR, SECRETARY OF STATE OF THE STATE OF
DELAWARE, DO HEREBY CERTIFY TETE CERTIFICATE OF MERGER, WHICH
MERGES:
"TBI PIPELINE COMPANY", A DELAWARE CORPORATION,
"TBI WEST VIRGINIA, INC.", A DELAWARE CORPORATION,
'iromr BROWN, INC_ ", A DELAWARE CORPORATION,
WITH AND INTO "ENCANA OIL & GAS (USA) INC." UNDER THE NAME
OF "ENCANA OIL & GAS (USA) INC.", A CORPORATION ORGANIZED AND
EXISTING UNDER THE LAWS OF THE STATE OF DELAWARE, WAS RECEIVED
AND FILED IN THIS OFFICE THE TWENTY-SECOND DAY OF DECEMBER, A.D.
2004, AT 6:35 O'CLOCK P.M.
AND I DO HEREBY FORMER CERTIFY THAT THE AFORESAID
CORPORATION SHALL BE GOVERNED BY TER LAWS OF THE STATE OF
DELAWARE_
AND I DO HEREBY FURTHER CERTIFY THAT THE EFFECTIVE DATE OF
THE AFORESAID CERTIFICATE OF MERGER IS THE FIRST DAY OF JANUARY,
A.D. 2005.
2137895 8330
050039241
Harriet Smith Windsor, Secretary of State
AUTHENTICATION: 3629933
DATE: 01-20-05
1111111 11111 11111 111 11111 11111111111111 11111 11111111
660502 09/24/2004 03 55P B1625 P498 11 ALSOORF
1 of 13 R 66,00 0 0.00 GARFIELD COUNTY CO
f1
0
0
3
cJ
AFTER RECORDING, RETURN TO:
EnCana Oil & Gas (USA) Inc.
950 17th Street, Suite 2600
Denver, Colorado 80202
Attention: Diane Blieszner, Esq.
ASSIGNMENT AND ASSUMPTION AGREEMENT
(Leases, Contracts, Permits, and Other Rights and Intangibles)
(Reservoir Parcel 11)
This Assignment and Assumption Agreement (this "Assignment"), dated as of
September2 J , 2004 (the "Effective Date"), is executed by UNION OIL COMPANY OF
CALIFORNIA, a California corporation ("Assignor"), and TOM BROWN, INC., a
Delaware corporation ("Assignee"),
1. Recitals. Assignor and Assignee are parties to that certain Purchase and
Sale Agreement as of June 30, 2004 (as amended, the "Contract"), pursuant to which
Assignor agreed to sell and Assignee agreed to buy certain real estate located in Garfield
County, State of Colorado, including the parcel more fully described on Exhibit A (the
"Property"). Pursuant to the Contract, Assignor has agreed to assign to Assignee, and
Assignee has agreed to accept the assignment from Assignor, of all of Assignor's right,
title, and interest in various leases ("Leases"), contracts ("Contracts"), permits, and other
rights and intangibles as more fully set forth on Exhibit B attached hereto (collectively,
the "Assigned Property"), with the understanding that the assignment and assumption are
to be effective with respect to rights and liabilities accruing from and after the Effective
Date.
2. Assignment and Assumption. In consideration of the purchase and sale
of the Property pursuant to the Contract, Assignor assigns to Assignee all right, title, and
interest of Assignor in the Assigned Property and Assignee accepts such assignment and
assumes, as of the date and time of this Assignment, all of the Assignor's obligations
under the Assigned Property arising on and after the date and time of this Assignment.
3. Prorations. All rent and other items of income associated with any Lease
or Contract shall be prorated between the Assignor and Assignee as of the date and time
of closing with an appropriate debit or credit therefor on the settlement statement
delivered in connection with the closing of the Contract. All amounts payable with
respect to the Assigned Property shall be prorated between Assignor and Assignee as of
1
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660302 09/24/2004 03 55P 61625 P499 M ALSDORF
2 of 13 R 66.00 0 0.00 GARFIELD COUNTY CO
the date and time of closing with an appropriate debit or credit therefor on the settlement
statement delivered in connection with the closing of the Contract.
4. Indemnity. Assignor indemnifies, defends, and holds harmless Assignee
from all claims, costs, expenses, and obligations of whatsoever nature, including
reasonable attorneys' fees, which are an obligation of Assignor under the Assigned
Property occurring or arising with respect to the period ending as of the date and time of
this Assignment. Assignee indemnifies, defends, and holds harmless Assignor from all
claims, costs, expenses, and obligations of whatsoever nature, including reasonable
attorneys' fees, which are an obligation of Assignor or Assignee under the Assigned
Property arising on or after the date and time of this Assignment.
5. Notices. Any notice or other communication permitted or required to be
given pursuant to this Assignment to any party shall be deemed to have been duly given
(i) three business days after being mailed by registered or certified mail, return receipt
requested, (ii) one business day following its deposit with a nationally recognized courier
promising next business day delivery, or (iii) immediately upon hand delivery addressed
as follows:
If to Assignor, to:
With a copy to:
With a copy to:
Union Oil Company of California
376 S. Valencia Ave.
Brea, California 92823
Attn: Real Estate Department — Brian J. Kelly
Fax: (714) 577-1717
Union Oil Company of California
376 S. Valencia Ave.
Brea, California 92823
Attn: Legal Department — Mary Parish, Esq.
Fax: (714) 577-2776
Sherman & Howard L.L.C.
633 Seventeenth Street, Suite 3000
Denver, CO 80202
Attn: Robert L. Brown, Esq,
Fax: (303) 298-0940
2
11111111111101111111111111111111111111 111 1111111111111
644184 01/05/2004 02:48P 61552 P480 M ALSDORF
1 of 1 R 6.00 D 0.00 GRRFIELD COUNTY CO
ELECTRIC UTILITY EASEMENT
KNOW ALL MEN BY THESE PRESENTS, that we the undersigned, (whether one
or more) American Soda LLP 2717 County Road 215 Parachute Colorado
81635 a Colorado limit liability partnership (hereinafter called
"Grantor, whether one or more) in consideration of the sum of Ten
Dollars ($ 10.00) and other good and valuable consideration, the
receipt thereof is hereby acknowledged, do hereby grant unto ENCANA
Gathering Services (USA) Inc., 950 17`h Street, Suite 2600 Denver
Colorado 80202 a Colorado corporation (hereinafter called the
"Grantee") and to its Successors or assigns, a perpetual Easement with
rights described herein 2._feet in width, 165 feet in length, with
easement extending in width when necessary to include guys and anchors,
for the purpose to construct, operate and maintain a power line or
power lines for the distribution of electric energy upon, over and
across the lands of the Grantor, situated in the County of
State of COLORADO and more particularly
described as follows:
NE1/4 OP SECTION 2, T7S, R96W 6 P.M. Garfield County, Colorado
with the Easement across said lands described as:
A GENERAL EASEMENT UPON, UNDER AND ACROSS ABOVE DESCRIBED PROPERTY TO
ALLOW THE INSTALLATION AND MAINTENANCE OF ELECTRIC LINES TO THE ROAN
CLIFF COMPRESSOR STATION 1875 COUNTY ROAD 215 PARACHUTE, COLORADO WITH
TEE EASEMENT BEING 10 FEET EACH SIDE OF THE LINE
This easement shall carry with it the right of ingress and egress to
and from and access on and along said easement, with the right to use
existing roads to survey, construct, repair, remove, replace,
reconstruct, patrol, inspect, improve, enlarge and maintain electric
distribution lines and communication (licensed joint use) facilities,
both overhead and underground including poles, and other supports or
whatever materials; together with braces, guys, anchors, cross arms,
cables, conduits, wires, conductors, manholes, transformers and other
fixtures, devices and appurtenances used or useful in connection
therewith, and full right and authority to cut, remove trim or
otherwise control all trees, brush and other growth on or overhanging
said easement.
Grantor zeserves the right to the use and enjoyment of said property
except for the purposes herein granted, but such use shall not hinder,
conflict, or interfere with the Utilities rights hereunder or disturb
Utilities facilities, and no building, structures, shall be erected
placed or permitted to remain on said easement without the Utilities
review for safety and access consideration.
IN WITNESS WHEREOF, the undersign d Grantor(s) have set their hands and
seal this �'J " day of P�Qlw�tt' , 2003.
SS.
harlie Yates
General Manager
The above and foregoing instrument was acknowledged before me
this Jqday of ��L!.2roL- 13Q r, 20 0 3 . �.
HUM 11111 0111 111 hill 111111111111111 11111 11111111
660502 09/24/2004 03:55P 01625 P500 D ALSDORF
3 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
If to Assignee, to:
With a copy to:
Tom Brown, Inc.
555 Seventeenth Street
Denver, Colorado 80202-3918
Telephone No.: (303) 260-5619
Fax: (303) 260-5188
Attention: David Davenport
FnCana Oil & Gas (USA) Inc.
950 17th Street, Suite 2600
Denver, Colorado 80202
Attention: Diane Blieszner, Esq.
Fax: (720) 956-3655
6. Attorneys' Fees. In the event of any dispute, litigation, or other
proceedings for the enforcement or interpretation of this Assignment, the nonprevailing
party shall pay to the prevailing party on demand any and all costs, fees, and expenses
(including reasonable attorneys' fees) incurred by the prevailing party in connection with
such dispute, litigation, or proceeding or the exercise of any rights under this Assignment.
7. Contract and Interpretation. All capitalized terms not defined in this
Assignment shall have the meanings given to them in the Contract. Assignor and
Assignee intend that the meaning of "Assigned Property" be as broad and encompassing
as necessary to effectuate the transfer from Assignor to Assignee of any and al] interests
of Assignor in any Leases, Contracts, permits, rights, benefits, income, revenue, and
intangibles benefiting or burdening or otherwise associated with the Property. In the
event of any inconsistency between the provisions of the Contract and the provisions of
this Assignment, the provision in the Contract shall control. Without limiting the
generality of the preceding, by way of example and not limitation, all of the provisions of
the Contract regarding release and indemnity shall apply to the assignment and
assumption of the Assigned Property under this Assignment. Except as expressly set
forth in this Assignment or the Contract, Assignor makes no warranty or representation of
any kind or nature and hereby disclaims any and all implied warranties with respect to the
Assigned Property.
8. Miscellaneous. This Assignment and the Contract constitute the entire
understanding of Assignor and Assignee with respect to their subject matter. This
Assignment may not be modified except by written agreement of Assignor and Assignee.
This Assignment may be executed in separate counterparts, all of which, taken together,
shall constitute one and the same document. This Assignment shall bind and benefit
Assignor, Assignee and their respective successors and assigns.
3
11111111111111{1111 111 111111111111111111111111111111111
660502 09/24/2004 03:55P B1625 P501 M fLSDORF
4 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
This Assignment has been executed to be effective as of the date first set forth above.
ASSIGNOR:
UNION OIL COMPANY OF
CALIFORNIA, a California corporation
By:
Brian J. y, A ey-in-Fact
STATE OF CALIFORNIA
COUNTY OF
SS.
56-C A7 -7-4/e=/7
AcKItipkox6-6/-7(/)7)
Acknowledged before me this day of Se
er, 2004 by Brian J. Kelly as
Attorney -in -Fact for Union Oil Company of Ca ' . ia, a California corporation.
Witness my hand and offic' - eal.
My commission - pires:
[SEAL]
Notary Public
[SEE SEPARATE PAGE FOR ASSIGNEE'S SIGNATURE]
4
1111111111 11111111 111 1111111lhill1II11111 illi 1111
660502 09/24/2004 03:55P B1625 P502 M ALSDORF
5 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
ALL PURPOSE ACKNOWLEDGEMENT
STATE OF CALIFORNIA )
) SS.
COUNTY OF ORANGE )
On September 17, 2004, before me, Aurora N. Legaspi, a Notary Public, personally appeared
Brian 3. Kelly, personally known to me to be the person whose name is subscribed to the
within instrument and acknowledged to me that he executed the same in his authorized
capacity, and that by his signature on the instrument the person, or the entity upon behalf of
which the person acted, executed the instrument on behalf of said corporation.
Witness my hand and official seal.
Notary Public
ATTENTION NOTARY: Although the information requested below is optional, it could prevent fraudulent
attachment of this certification to unauthorized document.
THIS CERTIFICATE
MUST BE ATTACHED
TO THE DOCUMENT
DESCRIBED AT RIGHT.
Title or Type of Document: Assignment and Assumption Agreement
Number of Pages: 5 pages including Exhibits A&B total of 12
Date of Document: September I7, 2004
Capacity of Signer: Attorney -in -Fact
Signer Represents: Union Oil Company of California
Signer(s) Other Than Named Above: Eric D. Marsh
111111 111111 111111111111111111111503 1111 lilt 1111
660502 49/24/2004 03:55P B
RF
S of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
ASSIGNEE:
TOM BROWN, INC.,
Eric D. Marsh, Vice President
STATE OF COLORADO
) ss.
CITY AND COUNTY OF DENVER
The foregoing instrument was acknowledged before me this al day of
September, 2004, by Eric D. Marsh, as Vice President of Tom Brown, Inc., a Delaware
corporation.
Witness my hand and official seal.
My commission expires: MyCommissionExpires diily2411 .
[SEAL]
A
SAdzick
CN,ptary Public
5
AIM 11111 1111111111 IIIII 111111111111 111 111111111 1111
660502 09/24/2004 03:55P B1625 P504 11 ALSDORF
7 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
EXHIBIT A
Legal Description of Reservoir Parcel
(Includes Unocal Parcel Nos. 7631, 7632,
7633, 7634, 7660, 76930, 7699 and
Portions of 7616, 7625, 7627A, 7639 and 7646)
Township 5 South, Range 95 West, 6th P.M.
Section 30:
Section 31:
Lots 10, 11, 12, 13 & 14
Lots 2, 3, 4, 9 & 10
Township 5 South, Range 96 West, 6th P.M.
Section 25: Lots 7 and 8
Section 36: NE1/4 & SE1/4 except that part of the South 949.99 feet lying West of the
Centerline of Parachute Creek.
Township 6 South, Range 96 West, 6th P.M.
Section 4: Lots 4, 10, 12 & and aII that part of Lot 1, SE1/4NW1/4, SW1/4NW1/4,
NW 1/4SW1/4 and Lot 11 lying East of the centerline of Parachute Creek
Section 9: Lots 3, 4, 5, 11 & SW 1/4NW 1 /4
TOGETHER with Grantor's 50% interest in a parcel of land, referred to as the Granlee Gulch
School Parcel, in the Northwest Quarter of the Southwest Quarter (NW1/4SWI/4) of Section 4,
Township 6 South, Range 96 West of the Sixth Principal Meridian, County of Garfield, State of
Colorado described as follows:
Starting at the Northwest corner of the Southwest quarter of Section 4, Township 6 South, Range
96 West (This Corner is located on the South side of a gulch) running down the gulch South of
East 582 feet to the creek from thence down the creek West of South 207 feet from thence West
336 feet from thence North 363 feet.
EXCEPTING therefrom that portion of County Road 215 that crosses the subject property
including the Roadway survey parcels and slide parcels conveyed to The Board of County of
Commissioners of Garfield County, Colorado in Special Warranty Deed recorded December 30,
1986 in Book 702 at Page 424 and as corrected in instrument recorded June 15, 1987 in Book
714 at Page 1.
A-1
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6 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
EXHIBIT B
List of Agreements, Licenses, Etc. to be Assigned
(Reservoir Parcel 11 Only)
1. *Right of Way Easement Agreement dated October 16, 1964, by and between
Union Oil Company of California, as grantor and The Mountain States Telephone and Telegraph
Company, as grantee, recorded October 29, 1964 in Book 361 at Page 481. [75]
2. *License for Electric Transmission Line dated September 29, 1964, by and
between Union Oil Company of California, as licensor and Public Service Company of Colorado,
as licensee, recorded December 4, 1964 in Book 362 at Page 317, as amended by Amendment to
License for Electric Transmission Line dated April 3, 1970 and recorded April 20, 1970 in Book
409 at Page 408. [76, 81]
3. *Pipeline Easement Agreement dated September 12, 1982, by and between Union
Oil Company of California, as grantor and Mobil Oil corporation, as grantee, recorded
December 14, 1982 in Book 614 at Page 683. [85]
4. Right of Way and Easement — Facility (Cathodic Protection Station) dated April 1,
1983, by and between Union Oil Company of California, as grantor and Northwest Pipeline
Corporation, as grantee, recorded April 18, 1983 in Book 625 at Page 204. 186]
5. Right of Way and Easement — Facility (Metering Site) dated April 1, 1983, by and
between Union Oil Company of California, as grantor and Northwest Pipeline Corporation, as
grantee, recorded April 21, 1983 in Book 625 at Page 610. [87]
6. *Right of Way and Easement — Lindauer dated November 10, 1982, by and
between Union Oil Company of California, as grantor and Northwest Pipeline Corporation, as
grantee, recorded May 2, 1983 in Book 626 at Page 291. [88]
7. *Right of Way and Easement — Davis Point dated November 10, 1982, by and
between Union Oil Company of California, as grantor and Northwest Pipeline Corporation, as
grantee, recorded May 2, 1983 in Book 626 at Page 304. [90]
8. *Upper Parachute Creek Valley Right of Way Agreement dated October 15, 1982,
by and between Union Oil Company of California, a California Corporation, as grantor and
Mobil Oil Corporation, as grantee, recorded December 7, 1983 in Book 640 at Page 1. [91]
9. License dated July 9, 1982, by and between Union Oil Company of California, as
licensor and Exxon Corporation, as licensee, recorded December 22, 1983 in Book 640 at Page
852, as amended by Upper Pipeline License Agreement dated May 19, 2000 but effective as of
B-1
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650502 09/24/2004 03:55P B1625 P506 M ALSDORF
9 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
July 9, 1982 by and among Union Oil Company of California and Exxon Mobil Corporation,
recorded June 14, 2000 in Book 1192 at Page 340. [93, 133]
10. Amendment to License Agreement dated November 11, 1983, by and between
Union Oil Company of California, as licensor and Exxon Corporation, as licensee, recorded
December 22, 1983 in Book 640 at Page 859, as amended by Upper Pipeline License Agreement
dated May 19, 2000 but effective as of July 9, 1982 by and among Union Oil Company of
California and Exxon Mobil Corporation, recorded June 14, 2000 in Book 1192 at Page 340.
[94, 133]
11. *Resolution No. 85-01 dated January 7, 1985 regarding approval of an application
for special and conditional land use permits, recorded January 7, 1985 in Book 662 at Page 466.
[95]
12. *Resolution No. 87-20 dated February 17, 1987 regarding approval of a special
use permit for the construction and operation of a water impoundment and associated facilities,
recorded February 18, 1987 in Book 705 at Page 691. [ 100]
13. Right of Way and Easement — Facility (Barrett Metering Site LN00407) dated
March 23, 1990, by and between Union Oil Company of California, as grantor and Northwest
Pipeline Corporation, as grantee, recorded April 18, 1990 in Book 777 at Page 12. [110]
14. *Resolution No. 91-027 dated April 1, 1991 regarding approval of a special use
permit for a water impoundment facility, recorded April 2, 1991 in Book 801 at Page 520. [ 111]
15. *Right of Way and Easement dated March 20, 1992, by and between Union Oil
Company of California, as grantor and Northwest Pipeline Corporation, as grantee, recorded
April 8, 1992 in Book 828 at Page 98. [ 112]
16. *Service Corridor Agreement dated June 1, 1992, by and between Union Oil
Company of California and Parachute Clean fuels, L.P., recorded June 12, 1992 in Book 833 at
Page 953, as amended by Settlement Agreement dated October 15, 1983 and recorded May 12,
1999 in Book 1129 at Page 28. [ 113, NIED]
17. *Right of Way and Easement Agreement (Davis Point) dated July 5, 1996, by and
between Union Oil Company of California, as grantor and Colorado Interstate Gas Company, as
grantee, recorded August 1, 1996 in Book 987 at Page 500, as amended by Amendment to Right
of Way and Easement Agreement (Davis Point) dated September 18, 1997 and recorded
October 20, 1997 in Book 1039 at Page 184. [ 114, 121]
18. Right of Way and Easement Agreement (Davis Point) dated July 5, 1996, by and
between Union Oil Company of California, as grantor and Colorado Interstate Gas Company, as
grantee, recorded August 1, 1996 in Book 987 at Page 500. [ 115]
B-2
1 11111 11111 113111 111111111111111 BEI Mil
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10 of 13 R 66.00 0 0 00 GARFIELD COUNTY CO
19. Right of Way and Easement Agreement (Service Corridor) dated July 18, 1996,
by and between Union Oil Company of California, as grantor and Colorado interstate Gas
Company, as grantee, recorded August 19, 1996 in Book 989 at Page 294, as amended by
Amendment to Right of Way and Easement Agreement (Service Corridor) dated September 18,
1997 and recorded October 20, 1997 in Book 1039 at Page 184. [ 116, 121]
20. Access License Agreement dated May 16, 1997, by and between Union Oil
Company of California, as licensor and Barrett Resources Corporation, as licensee, recorded
October 9, 1997 in Book 1037 at Page 676. [120]
21. Right of Way and Easement Agreement dated October 16, 1997, by and between
Union Oil Company of California, as grantor and Barrett Resources Corporation, as grantee,
recorded November 17, 1997 in Book 1042 at Page 615. [ 122]
22. Access License Agreement dated May 26, 1998, by and between Union OiI
Company of California, as licensor and Barrett Resources Corporation, as licensee, recorded
June I8, 1998 in Book 1073 at Page 440. [123]
23. *Utility Easements Agreement dated May 11, 1999, by and between Union Oil
Company of California, as grantor and American Soda, L.LP., as grantee, recorded May 12,
1999 in Book 1129 at Page 117, as amended by First Amendment to Utility Easements
Agreement dated May 1, 2003 and recorded May 6, 2003 in Book 1467 at Page 187. [127, 153]
24. *Lease Agreement dated June 29, 1999, by and between Union Oil Company of
California, as lessor and Tom Brown, Inc., as lessee, recorded October 7, 1999 in Book 1154 at
Page 492. [ 129]
25. Right of Way and Easement Agreement dated April 10, 2000, by and between
Union Oil Company of California, as grantor and Barrett Resources Corporation, as grantee,
recorded April 26, 2000 in Book 1184 at Page 109. [132]
26. Upper Pipeline License Agreement dated May 19, 2000, effective July 9, 1982, by
and between Union Oil Company of California, as licensor and Exxon Mobil Corporation, as
licensee, recorded June 14, 2000 in Book 1192 at Page 340. [133]
27. *Parachute Valley Easement Agreement dated April 1, 2000, by and between
Union Oil Company of California, Exxon Mobil Corporation and American Soda, L.L.P.,
recorded June 14, 2000 in Book 1192 at Page 354. [134]
28. Pipeline Easement Agreement dated June 22, 2000, by and between Union Oil
Company of California, as grantor and Colorado Interstate Gas Corporation, as grantee, recorded
June 30, 2000 in Book 1195 at Page 291. [135]
B-3
11111111111111111111111111111111111111111111I111 111 1111
660502 09/24/2004 03:55P 51625 P508 M ALSDORF
11 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
29. *Access License Agreement dated December 6, 2000, by and between Union Oil
Company of California, as licensor and Petroleum Development Corporation, as licensee,
recorded February 8, 2001 in Book 1230 at Page 930, as amended by Amendment to Access
License Agreement dated May 16, 2001 and recorded May 29, 2001 in Book 1256 at Page 271.
[136, 140]
30. *Right of Way and Easement Agreement dated February 26, 2001, by and
between Union Oil Company of California, as grantor and Petroleum Development Corporation,
as grantee, recorded March 20, 2001 in Book 1238 at Page 809. [138]
31. Access License Agreement dated March 20, 2001, by and between Union Oil
Company of California, as licensor and Petroleum Development Corporation, as licensee,
recorded April 19, 2001 in Book 1246 at Page 616. [139]
32. *Pipeline License Agreement dated February 22, 2002, by and between Union Oil
Company of California, as licensor and Petroleum Development Corporation, as licensee,
recorded April 29, 2002 in Book 1350 at Page 440. [ 144]
33. Right of Way and Easement Agreement dated March 1, 2002, by and between
Union Oil Company of California, as grantor and Petroleum Development Corporation, as
grantee, recorded April 29, 2002 in Book 1350 at Page 449. [145]
34. Right of Way and Easement Agreement dated March 1, 2002, by and between
Union Oil Company of California, as grantor and Petroleum Development Corporation, as
grantee, recorded April 29, 2002 in Book 1350 at Page 459. [146]
35. Access License Agreement dated September 3, 2002, by and between Union Oil
Company of California, as licensor and Petroleum Development Corporation, as licensee,
recorded September 9, 2002 in Book 1384 at Page 729. [147]
36. Access License Agreement dated September 3, 2002, by and between Union Oil
Company of California, as licensor and Petroleum Development Corporation, as licensee,
recorded September 9, 2002 in Book 1384 at Page 780. [148]
37. Right of Way and Easement Agreement dated September 3, 2002, by and between
Union Oil Company of California, as licensor and Petroleum Development Corporation, as
licensee, recorded September 9, 2002 in Book 1384 at Page 813. [149]
38. Right of Way and Easement Agreement dated December 19, 2002, by and
between Union Oil Company of California, as grantor and Petroleum Development Corporation,
as grantee, recorded January 9, 2003 in Book 1425 at Page 872. [150]
39. *Right of Way and Easement Agreement (Davis Point) dated June 29, 1994, by
and between Union Oil Company of California, as grantor and Barrett Resources Corporation, as
grantee, recorded March 21, 2003 in Book 1449 at Page 1, as amended by "As Built"
B-4
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660502 09/24/2004 03:55P 61625 P510 M ALSDORF
13 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
Ranch et al; Garfield County, Colorado) executed July 26, 2000 between Union Oil Company of
California and Exxon -Mobil. [NRJ
*Note: The assignment and assumption of the above items marked with an asterisk (*) is a partial assignment
and assumption and is effective only insofar as they relate to the Real Property described in Exhibit A.
(Bracketed information refers to Exception Document #: NR - indicates unrecorded document; N/ED - indicates a
recorded document but not an Exception Document]
B-6
Water Treatment Facility
Surrounding Owners
3/24/2005: 4:18 PM
T -R
Assessor's Legal Description
Assessor's
Parcel No.
Owner for Notices
County
4S -96W
SECT,TWN,RNG:23.4-96 DESC: SEC 22 E1/2NE, SEC 23 W1/2NW BK:0525
PG:0889 BK:1235 PG:354 RECPT:576924 BK0888 PG:0244
191523200001
Piceance Creek Ranch, Ltd.
ATTN: Dan Johnson
11539 Rio Blanco County Road 5
Rifle, CO 81650
Garfield
4S -96W
SECT,TWN,RNG:36-4-96 DESC: SE BK:0514 PG:0177 BK:0434
PG:0584 BK:0312 PG:0224 BK:0305 PG:0128 BK:0614 PG:0516
191536400004
Exxon Corporation
ATTN: Brent Patterson
PO Box 2567
Houston, TX
77252-2567
Garfield
4S -96W
SECT,TWN,RNG:29-496 DESC: SEC 21 SW, SEC 28 W1/2 SEC 29
E112,E1/2W1/2, SWNW, DESC: W1/2SW, SEC 30 SE, E1/2SW, SEC 31 NENW,
N1/2NE, DESC: SEC 32 NW, E1/2, SEC 33 W1/2, NWNE BK0589 PG:0454
8K0437 PG:0588 BK0334 PG:0304 BK0621 PG:0276
191529400002
Reuben G. Oldland
Stephanie Diane Oldland
14667 Rio Blanco County Road 5
Rifle, CO 81650
Garfield
4S -95W
SECT,TWN,RNG:21-4-95 DESC: W2NW, SENW, E2SE, SWSE SEC 28 NENW,
NWNE PRE:R260293 AND/THRU:& TO:R260292 BK:0606 PG:0216 BK:0591
PG:0206 BK:0525 PG:0895 BK:0525 PG:0887 BK:0525 PG:0879 BK:0525
PG:0864 BK:0888 PG:0244
191721400011
Piceance Creek Ranch, Ltd.
ATTN: Dan Johnson
11539 Rio Blanco County Road 5
Rifle, CO 81650
Garfield
5S -96W
SECT,TWN,RNG:7-5-96 DESC: S1/2NE, NESE, LOTS 1-4, SEC 17 NW, SEC 18
NE, LOTS DESC: 1-3 BK0564 PG:0680 BK:0562 PG:0098 BK0520 PG:0988
BK0334 PG:0304
213507300003
Reuben G. Oldland
Stephanie Diane Oldland
14667 Rio Blanco County Road 5
Rifle, CO 81650
Garfield
5S -96W
SECT,TWN,RNG:29-5-96 DESC: SEC 19 NE, SE, LOT 1-4 SEC 20 ALL
SEC 29 N1/2, DESC: N1/2S1/2 SEC 30 NE,SE,LOTS 14 SEC 31 NE, SE,
LOTS DESC: 1-4,SEC 32 SWSW AKA FRENCH 1-12,25-28, FEDERAL 26,
DESC: 27,29 BK:0308 PG:0368 BK:1190 PG:498 RECPT:564393
BK:1063 PG:0471 BK:1063 PG:0469 BK:951 PG:905 RECPT:482617
213529100008
ChevronTexaco Shale Oil Company
ATTN: Lee W. Parker
11111 S. Wilorest Drive
Houston, TX 77099
Garfield
5S -96W
SECT,TWN,RNG:32-5-96 DESC: SEC 29 S1/2SW, S1/2SE, SEC 32
N1/2NE, SWNE, NW, DESC: N1/2SW, SESW, SE, SEC 33 SW BK:0256
PG:0504 BK:0946 PG:0588 BK:0946 PG:0590 BK:0662 PG:031I
213532100009
Charles H. Latham
Thomas F. Latham
PO Box 66
De Begue, CO 81630-0036
Garfield
58-96W
SECT,TWN,RNG:33-5-96 DESC: SEC 32 SENE, SEC 33 S1/2NE,
S1/2NW, W1/2NWNW, SE DESC: AKA VIRGINIA 5 PT OF 3,4 PT OF
FRENCH 31 & PT OF DESC: FEDERAL 36 BK:0377 PG:0111 BK:0308
PG:0368 BK:0268 PG:0532 BK:0268 PG:0531 BK:0268 PG:0524
BK:0268 PG:0523
213533400010
ChevronTexaco Shale Oil Company
ATTN: Lee W. Parker
11111 S. Wilcrest Drive
Houston, TX 77099
Garfield
Page 1 of 7
Water Treatment Facility
Surrounding Owners
3/24/2005: 4:18 PM
T -R
Assessor's Legal Description
Assessor's
Parcel No.
Owner for Notices
County
5S -96W
SECT,TWN,RNG:18-6-96 DESC: SEC 4 A TR CONT 160.93AC EXCEPT A
TR CONT 4.25AC DESC: SEC 5 LOTS 14-19,21,23 SEC 6 LOTS 1-
18,SW, W1/2SE DESC: SEC 7 W1/2NE, NW, SW, W1/2SE, LOT 1-4 SEC
8 1-5,7 DESC: 12,S1/2SW,NWSW, SESE, 13-15 SEC 17 1,2,4-14,15,17
DESC: ,17, NENE, E1/2SE, SEC 18 W1/2NE, NW, SW, W1/2SE, DESC:
LOTS 1-4 SEC 20 1-3,6,7,NE, NWNW, S1/2NW, E1/2SW DESC: SEC 21
LOTS 1-4 SEC 29 LOT 3,4, W1/2NE, NENW AKA DESC: BITUMINITE 15,
PT OF 16 CONSOLIDATED #S 3-10,12,13 DESC: GRAND VALLEY #S
1,2,7,8 MIDLAND #S 1-5,G.J.N. #S DESC: 1 & 2 DESC: EXCEPT 28.87
AC. FOR CO. RD. 215 ROW AND SLIDE PCL BK:0377 PG:0111 BK:0285
PG:0169 BK:0274 PG:0228 BK:0268 PG:0532 BK:0268 PG:0531
BK:1218 PG:223 RECPT:572435
217118200008
ChevronTexaco Shale Oil Company
ATTN: Lee W. Parker
11111 S. Wilcrest Drive
Houston, TX 77099
Garfield
5S -96W
SECr,7WN,RNG:5-6-96 DESC; LOTS 1-12 5-96 SEC 35 S 1/2SE SEC 36
S 1/2SW DESC: AKA JB CLAIMS 1-4 BK:0293 PG:0351
217105200002
ChevronTexaco Shale Oil Company
ATTN: Lee W. Parker
11111 S. Wilcrest Drive
Houston, TX 77099
Garfield
5S -96W
SECT,TWN,RNG:4-6-96 DESC: SEC 4 LOTS 4, 10, 12 & ALL THAT PART
OF LOT 1., SENW SWNW NWSW AND LOT 1.1 LYING EAST OF THE
CENTERLINE OF PARACHUTE CREEK. SEC 9 LOTS 3, 4, 5, 11 & SWNW.
5-95 SEC 30 LOTS 10, 11, 12, 13 & 14 SEC 31 LOTS 2, 3, 4, 9 & 10. 5-
96 SEC 25 LOTS 7 & 8 SEC 36 NE & SE EXCEPT THAT PART OF THE
SOUTH 949.99 FEET LYING WEST OF THE CENTERLINE OF PARACHUTE
CREEK. EXCEPTING THERE FROM THAT PORTION OF CO RD 215 THAT
CROSSES THE SUBJECT PROPERTY INCLUDING THE ROADWAY SURVEY
PARCELS AND SLIDE PARCELS CONVEYED TO THE BCC OF GARFIELD
COUNTY, COLORADO IN SWD RECORDED 12/30/1986 IN BK 702 PG
424 AND AS CORRECTED IN INSTRUMENT RECORDED 06/15/1987 IN
BK 714 PG 1. AKA CHEVRON RESERVOIR RIGHT OF FIRST REFUSAL
PARCEL PRE:R460005 BK:617 PG:95 BK:296 PG:166 BK:0909 PG:0187
BK:0641 PG:0759 BK:0640 PG:0131 BK:0640 PG:0127 BK:0630
PG:0883 BK:0377 PG:0106 BK:0355 PG:0266 BK:0326 PG:0220
8K:0275 PG:0001 BK:0268 PG:0119 BK:0134 PG:0098 BK:1625
PG:498 RECPT:660502 BK:1625 PG:485 RECPT:660501 BK:1602
PG:406 RECPT:655357 BK:1602 PG:357 RECPT:655351 BK:1602
PG:342 RECPT:655348 BK:1602 PG:253 RECPT:655346 BK:1552 PG:67
217118200008
ChevronTexaco Shale Oil Company
ATTN: Lee W. Parker
11111 S. Wilcrest Drive
Houston, TX 77099
Garfield
Page 2 of 7
Water Treatment Facility
Surrounding Owners
3/24/2005: 4:18 PM
T -R
Assessor's Legal Description
Assessor's
Parcel No.
Owner for Notices
County
58-95W
SECT,TVIIN,RNG:5-5-95 DESC: LOTS 1 (56.71 AC), 5 (18.36 AC) DESC: AKA
HOFFMAN #20 PLACER MINING CLAIM, PRE:R290423 8K0895 PG:0039
BK:0703 PG:0742 BK0708 PG:0747
213305100008
John W. Savage, Jr.
Roy E. Savage
Marshall T. Savage
Daniel W. Savage
PO Box 1926
Rifle, CO 81650-1926
Garfield
5S -95W
SECT.TWN,RNG:3-5-95 DESC: LOTS 4 (56.68AC), 6(18.35 AC) DESC, AKA.
HOFFMAN #46 PLACER MINING CLAIM. PRE:R290423 BK0895 PG:0039
BK:0703 PG:0740 BK0708 PG:0740
213303200007
John W. Savage, Jr.
Roy E. Savage
Marshall T. Savage
Daniel W. Savage
PO Box 1926
Rifle, CO 81650-1926
Garfield
5S -95W
SECT,TWN,RNG:3-5-95 DESC: 5-95 ALL OR PTS OF SEC'S 3, 5, 6, 7, 8, 9, 10,
15, DESC: 16, 17, & 18 5-96 ALL OR PTS OF SEC'S 1, 2, 11, DESC: 12, 13, & 14
PRE:R260023 AND/THRLJ:& TO:R260184 PRE:R260117 BK0640 PG:0869
BK0601 PG:0608 BK:0579 PG:0340 BK0572 PG:0044 BK:0554 PG:0657
BK05 3 PG:0047
213308400006
Exxon Corporation
ATTN: Brent Patterson
PO Box 2567
Houston, TX
77252-2567
Garfield
5S -95W
SECT,TWN,RNG:235-95 DESC: SEC. 1 LOTS 1,2, S2NE, SE. SEC. 12 E2. SEC/
13,14, DESC: 23,24,25,26,35,36 ALL.
213323100958
Bureau of Land Management
PO Box 1009
Glenwood Springs, CO 81602-1009
Garfield
Garfield
53-95W
SECT,TWN,RNG:2-5-95 DESC: SEC. 1 LOTS 3, 4), SW, S2NW SEC. 2 LOTS 1,
2, 3, 4, S2, S2N2 SEC, 3 LOTS 1, 2, 5 S2S2 SEC, 4 S2 SEC. 11 ALL SEC. 12 W2
TOTAL 2633.37AC.
213302400951
Bureau of Land Management
PO Box 1009
Glenwood Springs, CO 81602-1009
6S -96W
SECT,TWN,RNG:29-6-96 DESC: SEC 28 LOT 4(40.53A), S2NW & LOT
9(31.87A) & NESW DESC: (33.55A) SEC 29 LOT 1(40.97A) 5(41.03A) 6(41.07A)
DESC: 7(41.05A) DESC: EXCEPT 10.28 AC. FOR CO. RD. 215 ROW. BK0385
PG:0346 BK:0385 PG:0056 BK1471 PG:132 RECPT:627598 BK1310 PG:680
RECPT:593429 BK:1108 PG:0023 BK:0811 PG:0933 BK0794 PG:0497 BK0702
PG:0411 BK0630 PG:0883 BK:0551 PG:0712
217129100005
Puckett Land Company
ATTN: Jeff Puckett
5460 S Quebec Street
Suite 250
Greenwood Vlg, CO 80111-1917
Garfield
Page 3 of 7
Water Treatment Facility
Surrounding Owners
3/24/2005: 4:18 PM
T -R
Assessor's Legal Description
Assessor's
Parcel No.
Owner for Notices
County
6S -96W
SECT,TVN,RNG:33-6-96 DESC: A TR IN SEC 4 7-96 SECS 27, 28, 29, 32, 33,
34. PRE:R260381 PRE:R005786 BK714 PG:1 BK702 PG:411 BK:682 PG:294
BK:658 PG:762 BK657 PG:419 BK641 PG:759 BK:640 PG:131 BK630 PG:883
BK:377 PG:106 BK355 PG:266 BK326 PG:220 BK275 PG:1 BK268 PG:119
BK134 PG:98 BK125 PG:41 BK1129 PG:116 BK1621 PG:903 RECPT:659636
BK:1617 PG:263 RECPT:658768 BK:1587 PG:440 RECPT:652080 6K1582
PG:31 RECPT:651031 BK1300 PG:448 RECPT:591324 BK1300 PG:439
RECPT:591323 BK1300 PG:431 RECPT:591322 BK:1300 PG:421
RECPT:591321 BK1300 PG:414 RECPT:591320 BK1300 PG:410
RECPT:591319 BK1300 PG:392 RECPT:591318 BK:1300 PG:389
RECPT:591317 BK1204 PG:993 RECPT:568682 BK:1263 PG:299
RECPT:583146 BK1205 PG:9 RECPT:568684 BK1205 PG:1 RECPT:568683
BK:1187 PG:176 RECPT:563403
217133200019
Williams Production RMT Company
ATTN: Jim Schaff
1515 Arapahoe Street
Tower 3
Suite 1000
Denver, CO 80202
Garfield
6S -96W
SECT,TWN,RNG:12-6-96 DESC: SEC 1 S1/2,S£C 11 ALL,SEC 12 ALL,SEC 13
ALL, SEC DESC: 14 ALL,SEC 22 N1/2SE, LOT 3,4,SEC 23 N1/2, N1/2SW, DESC:
LOT 1, SESW, SE, SEC 24 N1/2, SW, SEC 26 N1/2NE, DESC: NESW, LOT
1,3,4, SEC 27 SESW, 1-3,6-11,14, SEC 34 DESC: NWNE, NENW, ATR CONT
5.208A IN NE COR OF SWNW DESC: 6-95 SEC 7-20,22,23 SHERDIAN
CLAIMS1-21 INCL LAPAZ DESC: CLAIMS 1-14 INCL AKA MARCH #S 1-
15,HERWICK#S 1-1 DESC: PT OF BITUMINITE #4 DESC: EXCEPT .11AC. FOR
CO. RD. 215 ROW DESC. IN 702/420 BK0437 PG:0472 BK0361 PG:0066
BK0361 PG:0063 BK0353 PG:0199 BK:0353 PG:0196 BK0702 PG:0420
BK0682 PG:0294 BK0624 PG:0994 BK:0606 PG:0873
217112300003
Mobil Oil Corp.
ATTN: Brent Patterson
PO BOX 2567
Houston, TX
77252-2567
Garfield
6S -96W
SECT,TWN,RNG:4-6-96 DESC: A TR. LYING ELY OF CO. RD. 215 DE$C. IN
702/435 DESC: KNOWN AS A SLIDE PARCEL. BK:0714 PG:0186 BK0714
PG:0001 BK:0702 PG:0424
217104300011
Board of County Commissioners
Garfield County
109 8th St Ste 300
Glenwood Spgs, CO 81601-3363
Garfield
6S -96W
SECT,TWN,RNG:4-6-96 DESC: A TR. BEG. AT THE NW COR. OF THE SW
SEC 4{6.96), DESC: THIS COR. IS LOCATED ON THE S. SIDE OF A GULCH
DESC: RUNNING DOWN THE GULCH S OF EAST 582 TO THE CREEK DESC:
THENCE DOWN THE CREEK WEST OF S 20r,THENCE W 336 DESC:
THENCE N 363' TO THE POB. AKA GRANLEE SCHOOL TR. UNION OIL CO 1/2
(460034) 01(1602 PG:357 RECPT:655351 BK1602 PG:342 RECPT:655348
BK:0787 PG:0719 BK0584 PG:0509
217104300015
ChevronTexaco Shale Oil Company
ATTN: Lee W. Parker
11111 S. WiIGreSt Drive
Houston, TX 77099
Garfield
Page 4 of 7
Water Treatment Facility
Surrounding Owners
3124/2005: 4:18 PM
T -R
Assessor's Legal Description
Assessor's
Parcel No.
Owner for Notices
County
6S -96W
SECT,IWN,RNG:4-6-96 DESC: A TR. LYING ELY OF CO. RD. 215 DESC. IN
702/434 DESC: KNOWN AS A SLIDE PARCEL. BK0714 PG:0186 BK:0714
PG:0001 BK:0702 PG:0424
._217104300012
Board of County Commissioners
Garfield County
109 8th St Ste 300
Glenwood Spgs, CO 81601-3363
Garfield
6S -96W
SECT,TWN,RNG:5-6-96 DESC: LOTS 1-125-96 SEC 35 S 1/2SE SEC 36 S
1/2SW DESC: AKA JB CLAIMS 1-4 BK:0293 PG:0351
217105200002
ChevronTexaco Shale Oil Company
ATTN: Lee W. Parker
11111 S. Wiicrest Drive
Houston, TX 77099
Garfield
6S -96W
SECT,7WN,RNG:18-6-96 DESC: SEC 4 A TR CONT 160.93AC EXCEPT A TR
CONT 4.25AC DESC: SEC 5 LOTS 14-19,21,23 SEC 6 LOTS 1-18,SW, W1/25E
DESC: SEC 7 W1/2NE, NW, SW, W1/2SE, LOT 1-4 SEC 81-5,7 DESC:
12,S1/2SW,NWSW, SESE, 13-15 SEC 171,2,4-14,15,17 DESC: ,17, NENE,
E1/2SE, SEC 18 W1/2NE, NW, SW, W1/2SE, DESC: LOTS 1-4 SEC 201-
3,6,7,NE, NWNW, S1/2NW, E1/2SW DESC: SEC 21 LOTS 1-4 SEC 29 LOT 3,4,
W1/2NE, NENW AKA DESC: BITUMINITE 15, PT OF 16 CONSOLIDATED #S 3-
10,12,13 DESC: GRAND VALLEY#S 1,2,7,8 MIDLAND #S 1-5,G.J.N. #S DESC: 1
& 2 DESC: EXCEPT 28.87 AC. FOR CO. RD. 215 ROW AND SLIDE PCL
BK0377 PG:0111 BK:0285 PG:0169 BK0274 PG:0228 BK:0268 PG:0532
BK:0268 PG:0531 BK:1218 PG:223 RECPT:572435
217118200008
ChevronTexaco Shale Oil Company
ATTN: Lee W. Parker
11111 S. WilcreSt Drive
Houston, TX 77099
Garfield
6S -96W
SECT,TWN,RNG:17-6-96 DESC: A TR. IN SE1/4 LYING ELY OF CO. RD. 215
KNOWN AS DESC: A SLIDE PARCEL. BK0714 PG:0186 6K0714 PG:0001
BK:0702 PG:0415
217117400014
Board of County Commissioners
Garfield County
109 8th St Ste 300
Glenwood Spgs, CO 81601-3363
Garfield
65-96W
SECT,TWN,RNG:31-6-96 DESC: SEC 19 SW,SEC 30 NW,SW, W1/2SE, LOT
3,4, SEC 31 NW DESC: N1/2SW, W1/4NE, NWSE, LOT 3-9, SEC 32 3,6-8, 7-96
DESC: SEC 6 S112NE, S1/2NW,SW,SE, LOT 4-7, SEC 7 NE, NW, DESC: SEC 8
NW, AKA JESSYE B 3,4,7-9, 12, 14, 15, 17, 18 DESC: GRANDVIEW 2,3,5,6
BK0243 PG:0537 BK0811 PG:0933 BK0794 PG:0497
217131100006
Puckett Land Company
ATTN: Jeff Puckett
5460 S Quebec Street
Suite 250
Greenwood Vlg, CO 80111-1917
Garfield
6S -96W
SECT,TWN,RNG:34-6-96 DESC: A TR OF LAND NELY OF CP 215ROW IN LOT
3, 4 & 9. PRE:R005786 BK641 PG:759 BK:1204 PG:993 RECPT:568682 BK:1205
PG:9 RECPT:568684 BK:1205 PG:1 RECPT:568683 BK1187 PG:176
RECPT:563403
217134200017
Puckett Land Company
ATTN: Jeff Puckett
5460 S Quebec Street
Suite 250
Greenwood Vig, CO 80111-1917
Garfield
Page 5 of 7
Water Treatment Facility
Surrounding Owners
3/24/2005: 4:18 PM
T -R
Assessor's Legal Description
Assessor's
Parcel No.
Owner for Notices
County
6S -96W
SECT,TWN,RNG:36-6-96 DESC: SEC 35 LOT 16, SEC 36 NE1/4SW1/4,
NW1/4SE1/4, LOT DESC: 3,4,5,6 7-96 SEC 1 LOT 3, SEC 2 LOT 1 'ALARADO
CORPORATION 29.2548% ZENITH DRILLING CORP.10.4327% DELBARCO
5.859375% YATES DRILLING CO 6.6667% ABO PETROLEUM CORP 6.6667%
EST. MARTIN YATES III -3.3333% LILLIE M. YATES 3.3333% YATES
PETROLEUM CORP 5.0000% BK0239 PG:0191 BK:0777 PG:0975 BK0781
PG:0426 BK0767 PG:0659 BK0744 PG:0381 BK0731 PG:0805 8K:0731
PG:0807 BK0731 PG:0806
217136300007
Williams Production RMT Company
ATTN: Jim Schaff
1515 Arapahoe Street
Tower 3
Suite 1000
Denver, CO 80202
Garfield
6S -96W
SECT,TWN,RNG:2-7-96 DESC: A TR IN SECS 34 & 35 OF T 6 S RGE 96 W &
SECS 1-3 OF T 7 S RGE 96 W CONT 998.98 AC. EXCEPT THE ROW FOR CO
RD 215 AS DESC IN 657/419, 658/7627021411-435,714/01-13. EXCEPT A TR OF
LAND CONT. 45.28 AC. AS DESC IN BK 1187 PG 176. PRE:R280370
PRE:R260092 AND/THRU:T TO:R260054 PRE:R260337 AND/THRU:&
TO:R260345 BK1130 PG:972 RECPT:545908 BK1130 PG:971 RECPT:545908
BK:1130 PG:970 RECPT:545908 BK:1130 PG:969 RECPT:545908 81(0641
PG:0759 BK0640 PG:0131 BK0630 PG:0863 BK0377 PG:0106 BK0355
PG:0266 BK:0326 PG:0220 BK0275 PG:0001 BK:0268 PG:0119 BK0134
PG:0098 BK:1607 PG:742 RECPT:656645 81(1602 PG:397 RECPT:655356
BK1587 PG:440 RECPT:652080 BK:1577 PG:313 RECPT:650061 BK:1556
PG:828 RECPT:645428 BK1526 PG:227 RECPT:638027 BK1515 PG:151
RECPT:635788 BK1515 PG:145 RECPT:635787 BK:1462 PG:657
RECPT:626049 BK1351 PG:551 RECPT:602574 BK1351 PG:548
RECPT:602573 BK1333 PG:754 RECPT:598256 BK1209 PG:429
RECPT:569904 BK1209 PG:419 RECPT:569903 BK1203 PG:391
RECPT:568109 BK1203 PG:381 RECPT:568108 8K1187 PG:176
RECPT:583+1003 BK1129 PG:50 RECPT:545331 81(0846 PG:0952 B1(0682 PG:02
240902200148
American Soda, LLP
C/0 Solvay Inc.
ATTN: Ed Cooley
2717 County Road 215
Parachute, CO
81635
Garfield
6S -96W
SECT,TWN,RNG:9-6-96 DESC: A TR. LYING ELY OF CO. RD. 215 DESC. IN
702/433 DESC: KNOWN AS A SLIDE PARCEL BK:0714 PG:0186 BK0714
PG:0001 BK07C12 PG:0424
217109300013
Board of County Commissioners
Garfield County
109 8th St Ste 300
Glenwood Spgs, CO 81601-3363
Garfield
6S -95W
Section 6, aol
2173
Bureau of Land Management
PO Box 1009
Glenwood Springs, CO 81602-1009
Garfield
4S -96W
SECT,TWN,RNG:7-4S 96W DESC: a parcel in LEGAL UPON REQUEST
SUC:904135 TO:904390 SUC:904126 TO:904390
191507100007
ConocoPhillips Company
ATTN: Kile Thompson
3960 East 56th Avenue
Commerce City, CO 80022
Rio Blanco
Page 6 of 7
Water Treatment Facility
Surrounding Owners
3/24/2005: 4:18 PM
T -R
Assessor's Legal Description
Assessor's
Parcel No.
Owner for Notices
County
4S -96W
SECT,TWN,RNG:14-4S-96W DESC: NW1/4, SWNE, NWSE, ETC,.. BK:0508
PG:0569 LEGAL UPON REQUEST
191514200004
Piceance Creek Ranch, Ltd.
11539 County Road 5
Rifle, CO
81650
Rio Blanco
4S -96W
SECT,TWN,RNG:16-4S-96W DESC: NE1/4 LEGAL UPON REQUEST
PRE:R900470 TO:R904372
191706100004
ConocoPhillips Company
ATTN: Kite Thompson
3960 East 56th Avenue
Commerce City, CO 80022
Rio Blanco
4S -95W
SECT,TWN,RNG:14-4S-95W 277675
191714300002
Thacker & Son, Inc.
PO Box 1900
Glemora, LA
71433
Rio Blanco
4S -95W
SECT,TWN,RNG:10-4S-95W DESC: NE1/4, S1/2, NW1/4, ETC... BK:0457
PG:0856 BK -0468 PG:0188 LEGAL UPON REQUEST
191710300006
ConocoPhillips Company
ATTN: Kile Thompson
3980 East 56th Avenue
Commerce City, CO 80022
Rio Blanco
4S -94W
Section 31, aol
Bureau of Land Management
PO Box 1009
Glenwood Springs, CO 81602-1009
Rio Blanco
Page 7 of 7
EnCana Middle
Fork Compressor Project -Contact List
Full Name
Job Tltle
BWSMeaatt
BusllnessTax
Mobile
E -mal l
EnCana
Client
Justin Ochocki
Bob Fuqua
Project Engineer
(720)876-3764
(720) 876-4764
(303) 710-0972
Justin .Ochocki(EnCana.com
Senior Project Engineer
(720)876-3773
(720) 876-4773
(303) 589-0110
Robert. Fuqua(Q7Encana.com
Paul Morehead
Engineer
(720)876-6066
Paul. Morehead(5encana.com
Dewey Neely
Piceance Construction Group Leader
(970) 250-9462
dneely0,tombrown.com
LyndelLoman
Gathering Coordinator - Operations
(970) 675-4486
(970) 675-4434
(970)574-8906
Ivndel.lomanna encana.com
Dwight Schneider
Doug Rosa
Tech Services and Maintenance Coordinator
Field Operations Leader
(970)263-5403
5970) 250-8114
(970)263-5400
(970) 210-2073
Brandon Robinson
I&E
(970) 574-7060
Brandon .Robinson(c7r encana.com
Klrk Franz
I&E
(435)-260-2280
kfranzetombrown.com
Samuel Engineering, Inc
Compressor Station & Balance -of -Plant
Design
Everod Samuel
Ray Manes
Project Manlger
Mech./Plping/Layout Design Leader
(303) 714-4841
(720) 482-8327
(303) 947-8769
esamuel(asamuelenoineerino.com
(303) 714-4858
(720) 482-8327
(303 250-5248
Gopal Padmanabhan
Lead Electrical Engineer
(303) 714-4854
(720) 482-8327
Doug Carlson
Lead Process Engineer
(303) 714-4808
(720) 482-8327
Ivor Alexander
Lead Automation/Inslrumentation Engineer
(303) 714-4843
(720) 482-8327
(303)829-7898
rmanes • samuelen.ineerin..com
gooalsamuelenoineerinq.com
dcarlson EEsamuelengineerinq.com
ialexanderCDsamuelengineerinq.cam
Kevin Mahone
Lead Civil/Structural Engineer
(303) 714-4857
720) 482-8327
mahonevfa?samuelenni
Debbie Bacon
Sr.Structural Engineer_
(303) 714-4839
(720)
482-8327
dbacon(a?samuelenaineerinq.com
John Gagnon
Lead Architect (Buildings)
(303) 714-4822
(720)
482-8327
(720)
231-6385
joagnon(a?samuelenoineerinq.com
Martin Logan
QA/QC & Processs Engineer
(303) 714-4847
(720)
482-8327
(303)
947-876.
corn
ZAP
Working on Inlet Liquid handling and
stabilization design
Roman Fedyk
Project Manager
Katie Roche
Ed Balderas
Process Engineering
Piping Design
(720) 529-4430 J 720-529-4430
(720) 529-4430jI 720-529-4430
(720) 529-4430 720-529-4430
(303) 881-6016
fedvk(5 zapecs.com
rocheck(@zapecs.com
bald eraset zapecs.com
1 111111 11111 111111 111 11111 11111111 11111 111 11111 1111 1111
655348 07/02/2004 03:06P 01602 P344 M AL.SDORF
3 of 3 R 16.00 D 0.00 GARFIELD COUNTY CO
EXHIBIT A
Legal Description — Chevron Reservoir Right of First Refusal Parcel and Water Rights
(Includes Unocal Parcel Nos. 7631, 7632,
7633, 7634, 7660, 7693D, 7699 and
Portions of 7616, 7625, 7627A, 7639 and 7646)
Township 5 South, Range 95 West, 6th P.M.
Section 30:
Section 31:
Lots 10, 11, 12, 13&14
Lots 2, 3, 4, 9 & 10
Township 5 South, Range 96 West, 6th P.M.
Section 25: Lots 7 and 8
Section 36: NE1/4 & SE1/4 except that part of the South 949.99 feet lying West of the
Centerline of Parachute Creek.
Township 6 South, Range 96 West, 6th P.M,
Section 4: Lots 4, 10, 12 & and all that part of Lot 1, SEI/4NW 1/4, SWI/4NW1/4,
NW1/4SWI/4 and Lot 11 lying East of the centerline of Parachute Creek
Section 9: Lots 3, 4, 5, 11 & SW1/4NWI/4
TOGETHER with a parcel of land, referred to as the Granlee Gulch School Parcel, in the
Northwest Quarter of the Southwest Quarter (NWI/4SW1/4) of Section 4, Township 6 South,
Range 96 West of the Sixth Principal Meridian, County of Garfield, State of Colorado described
as follows:
Starting at the Northwest corner of the Southwest quarter of Section 4, Township 6 South, Range
96 West (This Comer is located on the South side of a gulch) running down the gulch South of
East 582 feet to the creek from thence down the creek West of South 207 feet from thence West
336 feet from thence North 363 feet.
EXCEPTING therefrom that portion of County Road 215 that crosses the subject property
including the Roadway survey parcels and slide parcels conveyed to The Board of County of
Commissioners of Garfield County, Colorado in Special Warranty Deed recorded December 30,
1986 in Book 702 at Page 424 and as corrected in instrument recorded June 15, 1987 in Book
714 at Page I.
A-1
111111111111111111111 i11i1 1111111111111111 Illli ilii 1iii
655348 07/02/2004 03;06P B1602 P343 i1 ALSDORF
2 of 3 R 16.00 0 0.00 GARFIELD COUNTY CO
unto Grantor shall entitle Grantor to a cost free share equal to two percent of 8/8ths of all Shale Oil
in addition to any previously existing mineral interests or burdens excepted above and is not
dependent on the existence (or nonexistence) of any mineral lease covering all or any portion of the
Real Estate. Grantor may, at its option and in its sole discretion, elect from time to time to take its
royalty share in kind upon giving Grantee at least ninety days prior written notice of such intent.
IN WITNESS WHEREOF, the Grantor has caused its corporate name to be hereunto
subscribed by its attorney-in-fact on this /1 day of June, 2004.
STATE OF COLORADO
) ss.
CITY AND COUNTY OF DENVER
UNION OIL COMPANY OF CALIFORNIA,
a California corporation
By: "Titsy
Brian J. Kel y, Attome -in-Fact
Acknowledged before me this i I day of June, 2004 by Brian J. Kelly, Attorney -in -Fact for
Union Oil Company of California, a California corporation.
Witness my hand and official seal.
3/ Commission Expires: 3 —r i-0/
iLB�G:
OF Coy..
itiassinimEdres
Notary Public
2
()V06o0l--C'�T
1111111111111111111111111111111111111111111111111111
655348 07/02/2004 03:06P B1602 P342 N ALSDORF
1 of 3 R 16.00 0 0.00 GARFIELD COUNTY CO
AFTER RECORDING., RETURN TO:
EnCana Oil & Gas (USA) Inc.
950 17th Street, Suite 2600
Denver, Colorado 80202
Attention: Diane Blieszner, Esq.
QUITCLAIM DEED
THIS DEED, dated June 1 / , 2004, between UNION OIL COMPANY OF CALIFORNIA, a
corporation duly organized and existing under the laws of the State of California ("Grantor"),
whose legal address 376 South Valencia Avenue, Brea, California 92823, and TOM BROWN, INC.,
a corporation duly organized and existing under and by virtue of the laws of the State of Delaware
("Grantee"), whose legal address is 555 17th Street, Suite 1850, Denver, Colorado 80202:
WITNESS, that the Grantor, for and in consideration of the sum of Ten and no/100 Dollars
and other good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, has remised, released, sold and QUITCLAIMED, and by these presents does remise,
release, sell and QUITCLAIM unto the Grantee, its successors and assigns forever, all the right, title,
interest, claim and demand which the Grantor has in and to any and all real property, together with
improvements, if any, situate, lying and being in:
Township 4 South, Range 95 West of the 6th P.M.,
Township 4 South, Range 96 West of the 6th P.M.,
Township 5 South, Range 95 West of the 6th P.M.,
Township 5 South, Range 96 West of the 6`h P.M.,
Township 6 South, Range 96 West of the 6th P.M.,
Township 7 South, Range 96 West of the 6th P.M.,
Garfield County, Colorado, except the fee interest to the surface rights to that parcel of real property,
the legal description of which is attached as Exhibit A (the "Chevron Reservoir Right of First
Refusal Parcel") and except water storage rights related to such parcel.
Grantor and Grantee agree and intend that this instrument shall convey to Grantee all of
Grantor's interest in and to oil, gas and other minerals in and under the land described above
(including those under the land described on attached Exhibit A) (the "Real Estate").
Notwithstanding the preceding, there is reserved unto Grantor, its successors and assigns and
not conveyed herein a two percent (2%) gross royalty in all oil and gas produced from or attributable
to the Real Estate conveyed herein which is produced, mined or otherwise extracted from shale
("Shale Oil") within the Green River Formation from the surface to a depth that is stratigraphically
equivalent to the "Orange Marker" within the Garden Gulch member of the Green River Formation,
such depth being the stratigraphic equivalent to a depth of 2105' in the Skelly Oil Company #1 Dry
Fork Unit well, SW 1/4 NW1/4 SEI/4 of Section 25, Township 4 South, Range 97 West of the 6th
P.M., Garfield County, Colorado. For the avoidance of doubt, the foregoing royalty reserved herein
1 111111 I1111111111111111111 1111111 11111 ill 11111 1111 1111
660502 09/24/2004 03.55P B1625 P498 11 ALSOORF
1 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
AFTER RECORDING, RETURN TO:
EnCana Oil & Gas (USA) Inc.
950 17th Street, Suite 2600
Denver, Colorado 80202
Attention: Diane Blieszner, Esq.
ASSIGNMENT AND ASSUMPTION AGREEMENT
(Leases, Contracts, Permits, and Other Rights and Intangibles)
(Reservoir Parcel 11)
This Assignment and Assumption Agreement (this "Assignment"), dated as of
September, 1 , 2004 (the "Effective Date"), is executed by UNION OIL COMPANY OF
CALIFORNIA, a California corporation ("Assignor"), and TOM BROWN, INC., a
Delaware corporation ("Assignee").
1. Recitals. Assignor and Assignee are parties to that certain Purchase and
Sale Agreement as of June 30, 2004 (as amended, the "Contract"), pursuant to which
Assignor agreed to sell and Assignee agreed to buy certain real estate located in Garfield
County, State of Colorado, including the parcel more fully described on Exhibit A (the
"Property"). Pursuant to the Contract, Assignor has agreed to assign to Assignee, and
Assignee has agreed to accept the assignment from Assignor, of all of Assignor's right,
title, and interest in various leases ("Leases"), contracts ("Contracts"), permits, and other
rights and intangibles as more fully set forth on Exhibit B attached hereto (collectively,
the "Assigned Property"), with the understanding that the assignment and assumption are
to be effective with respect to rights and Liabilities accruing from and after the Effective
Date.
2. Assignment and Assumption. In consideration of the purchase and sale
of the Property pursuant to the Contract, Assignor assigns to Assignee all right, title, and
interest of Assignor in the Assigned Property and Assignee accepts such assignment and
assumes, as of the date and time of this Assignment, all of the Assignor's obligations
under the Assigned Property arising on and after the date and time of this Assignment.
3. Prorations. All rent and other items of income associated with any Lease
or Contract shall be prorated between the Assignor and Assignee as of the date and time
of closing with an appropriate debit or credit therefor on the settlement statement
delivered in connection with the closing of the Contract. All amounts payable with
respect to the Assigned Property shall be prorated between Assignor and Assignee as of
1
1 111111111111111111 111 111111111111 1111111111111 11111111
660502 09/24/2004 03 55P 01625 P499 0 ALSDORF
2 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
the date and time of' closing with an appropriate debit or credit therefor on the settlement
statement delivered in connection with the closing of the Contract.
4. Indemnity. Assignor indemnifies, defends, and holds harmless Assignee
from all claims, costs, expenses, and obligations of whatsoever nature, including
reasonable attorneys' fees, which are an obligation of Assignor under the Assigned
Property occurring or arising with respect to the period ending as of the date and time of
this Assignment. Assignee indemnifies, defends, and holds harmless Assignor from all
claims, costs, expenses, and obligations of whatsoever nature, including reasonable
attorneys` fees, which are an obligation of Assignor or Assignee under the Assigned
Property arising on or after the date and time of this Assignment.
5. Notices. Any notice or other communication permitted or required to be
given pursuant to this Assignment to any party shall be deemed to have been duly given
(i) three business days after being mailed by registered or certified mail, return receipt
requested, (ii) one business day following its deposit with a nationally recognized courier
promising next business day delivery, or (iii) immediately upon hand delivery addressed
as follows:
If to Assignor, to:
With a copy to:
With a copy to:
Union Oil Company of California
376 S. Valencia Ave.
Brea, California 92823
Attn: Real Estate Department — Brian J. Kelly
Fax: (714) 577-1717
Union Oil Company of California
376 S. Valencia Ave.
Brea, California 92823
Attn: Legal Department -- Mary Parish, Esq.
Fax: (714) 577-2776
Sherman & Howard L.L.C.
633 Seventeenth Street, Suite 3000
Denver, CO 80202
Attn: Robert L. Brown, Esq.
Fax: (303) 298-0940
2
111111111111111111111111111111111111111(111111111111111
644184 01/05/2004 02:48P 61552 P480 M RL.SDORF
1 of 1 R 6.00 0 0.00 ORRFIELD COUNTY CO
ELECTRIC UTILITY EASEMENT
KNOW ALL MEN BY THESE PRESENTS, that we the undersigned, (whether one
or more) American Soda LLP 2717 County Road 215 Parachute Colorado
81635 a Colorado limit liability partnership (hereinafter called
"Grantor, whether one or more) in consideration of the sum of Ten
Dollars ($ 10.00) and other good and valuable consideration, the
receipt thereof is hereby acknowledged, do hereby grant unto ENCANA
Gathering Services (USA) Inc., 950 17" Street, Suite 2600 Denver
Colorado 80202 a Colorado corporation (hereinafter called the
"Grantee") and to its Successors or assigns, a perpetual Easement with
rights described herein 20—feet in width, 165 feet in length, with
easement extending in width when necessary to include guys and anchors,
for the purpose to construct, operate and maintain a power line or
power lines for the distribution of electric energy upon, over and
across the lands of the Grantor, situated in the County of
GARFIEE,iD State of COLORADQ and more particularly
described as follows:
NE1/4 OF SECTION 2, T7S, R96W 6TE P.M. Garfield County, Colorado
with the Easement across said lands described as:
A GENERAL EASEMENT UPON, UNDER AND ACROSS ABOVE DESCRIBED PROPERTY TO
ALLOW THE INSTALLATION AND MAINTENANCE OF ELECTRIC LINES TO THE ROAN
CLIFF COMPRESSOR STATION 1875 COUNTY ROAD 215 PARACHUTE, COLORADO WITH
THE EASEMENT BEING 10 FEET EACH SIDE OF THE LINE
This easement shall carry with it the right of ingress and egress to
and from and access on and along said easement, with the right to use
existing roads to survey, construct, repair, remove, replace,
reconstruct, patrol, inspect, improve, enlarge and maintain electric
distribution lines and communication (licensed joint use) facilities,
both overhead and underground including poles, and other supports or
whatever materials; together with braces, guys, anchors, cross arms,
cables, conduits, wires, conductors, manholes, transformers and other
fixtures, devices and appurtenances used or useful in connection
therewith, and full right and authority to cut, remove trim or
otherwise control all trees, brush and other growth on or overhanging
said easement.
Grantor reserves the right to the use and enjoyment of said property
except for the purposes herein granted, but such use shall not hinder,
conflict, or interfere with the Utilities rights hereunder or disturb
Utilities facilities, and no building, structures, shall be erected
placed or permitted to remain on said easement without the Utilities
review for safety and access consideration.
IN WITNESS WHEIEOF, the undersign Grantor(s) have set their hands and
seal this /5 day of Pd h..bt r , 2003.
S e .
harlie Yates
General Manager
The above and foregoing instrument was acknowledged before me
this / day of �& rti bQf", 20 /03 /}
1111111111111111111111111111111111111111111111111111111
660502 09/24/2004 03 55P 61625 P500 M ALSDORF
3 of 13 R 56.00 D 0.00 GARFIELD COUNTY CO
If to Assignee, to:
With a copy to:
Tom Brown, Inc.
555 Seventeenth Street
Denver, Colorado 80202-3918
Telephone No.: (303) 260-5619
Fax: (303) 260-5188
Attention: David Davenport
EnCana Oil & Gas (USA) Inc.
950 17th Street, Suite 2600
Denver, Colorado 80202
Attention: Diane Blieszner, Esq.
Fax: (720) 956-3655
6. Attorneys' Fees. In the event of any dispute, litigation, or other
proceedings for the enforcement or interpretation of this Assignment, the nonprevailing
party shall pay to the prevailing party on demand any and all costs, fees, and expenses
(including reasonable attorneys` fees) incurred by the prevailing party in connection with
such dispute, litigation, or proceeding or the exercise of any rights under this Assignment.
7. Contract and Interpretation. All capitalized terms not defined in this
Assignment shall have the meanings given to them in the Contract. Assignor and
Assignee intend that the meaning of "Assigned Property" be as broad and encompassing
as necessary to effectuate the transfer from Assignor to Assignee of any and all interests
of Assignor in any Leases, Contracts, permits, rights, benefits, income, revenue, and
intangibles benefiting or burdening or otherwise associated with the Property. In the
event of any inconsistency between the provisions of the Contract and the provisions of
this Assignment, the provision in the Contract shall control. Without limiting the
generality of the preceding, by way of example and not limitation, all of the provisions of
the Contract regarding release and indemnity shall apply to the assignment and
assumption of the Assigned Property under this Assignment. Except as expressly set
forth in this Assignment or the Contract, Assignor makes no warranty or representation of
any kind or nature and hereby disclaims any and all implied warranties with respect to the
Assigned Property.
8. Miscellaneous. This Assignment and the Contract constitute the entire
understanding of Assignor and Assignee with respect to their subject matter. This
Assignment may not be modified except by written agreement of Assignor and Assignee.
This Assignment may be executed in separate counterparts, all of which, taken together,
shall constitute one and the same document. This Assignment shall bind and benefit
Assignor, Assignee and their respective successors and assigns.
3
1111111111(111111111111111111111111111) III 11111 11E1111
660502 09/24/2004 03 55P 01625 P501 M AL50ORF
4 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
This Assignment has been executed to be effective as of the date first set forth above.
ASSIGNOR:
UNION OIL COMPANY OF
CALIFORNIA, a California corporation
By:
Brian I. I l'[y, At ey-in-Fact
STATE OF CALIFORNIA
COUNTY OF
SS.•
5'G= A77/1e/1/7
Acx/ookox c-ri/'xvr)
Acknowledged before me this day of Se
er, 2004 by Brian I. Kelly as
Attorney -in -Fact for Union Oil Company of Ca iia, a California corporation.
Witness my hand and offic' - eal.
My commission - pires:
[SEAL]
Notary Public
[SEE SEPARATE PAGE FOR ASSIGNEE'S SIGNATURE]
4
111111111111HIM 111Ell 111111111111111HIEN 1111
660502 09/24/2004 03 55P 01625 P502 11 ALSDORF
5 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
ALL PURPOSE ACKNOWLEDGEMENT
STATE OF CALIFORNIA )
) SS.
COUNTY OF ORANGE )
On September 17, 2004, before me, Aurora N. Legaspi, a Notary Public, personally appeared
Brian J. Kelly, personally known to me to be the person whose name is subscribed to the
within instrument and acknowledged to me that he executed the same in his authorized
capacity, and that by his signature on the instrument the person, or the entity upon behalf of
which the person acted, executed the instrument on behalf of said corporation.
Witness my hand and official seal.
a4,4.
Notary Public
*LOOM M
CommMUgn # 144$079
tiela�y Pubic • CalIkela
Owes County
MyComm. B0M4Co1211.
ATTENTION NOTARY: Although the information requested below is optional, it could prevent fraudulent
attachment of this certification to unauthorized document.
THIS CERTIFICATE
MUST BE ATTACHED
TO THE DOCUMENT
DESCRIBED AT RIGHT.
Title or Type of Document: Assignment and Assumption Agreement
Number of Pages: 5 hares including Exhibits A&13 total of 12
Date of Document: Sei tember 17, 2004
Capacity of Signer: Attomev-in-Fact
Signer Represents: Union Oil Company of California
Signer(s) Other Than Named Above: Eric D. Marsh
1111111111111111111111111111111111111111111111i 11111111
660502 09/24/2004 03 55P Bl
6 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
ASSIGNEE:
TOM BROWN, INC.,
a Delawa
By:
ith Eric D. Marsh, Vice President
;•eorpotion
STATE OF COLORADO
) ss.
CITY AND COUNTY OF DENVER
The foregoing instrument was acknowledged before me this Z. day of
September, 2004, by Eric D. Marsh, as Vice President of Tom Brown, Inc., a Delaware
corporation.
Witness my hand and official seal.
My commission expires: MMyCommission Expires lnly?4 ZOO.
N
5
1111111 11111 1111111 111 11111 1111111 11111 11111111 RHUMB
660502 09/24/2004 03:55P 131625 P504 M ALSDORF
7 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
EXHIBIT A
Legal Description of Reservoir Parcel
(Includes Unocal Parcel Nos. 7631, 7632,
7633, 7634, 7660, 7693D, 7699 and
Portions of 7616, 7625, 7627A, 7639 and 7646)
Township 5 South, Range 95 West, 6th P.M.
Section 30: Lots 10, 11, 12, 13 & 14
Section 31: Lots 2, 3, 4, 9 & 10
Township 5 South, Range 96 West, 6th P.M.
Section 25: Lots 7 and 8
Section 36: NE1/4 & SE1/4 except that part of the South 949.99 feet lying West of the
Centerline of Parachute Creek.
Township 6 South, Range 96 West, 6th P.M.
Section 4: Lots 4, 10, 12 & and all that part of Lot 1, SEI/4NW1/4, SW1/4NW1/4,
NW 1/4SW 1 /4 and Lot 1I lying East of the centerline of Parachute Creek
Section 9: Lots 3, 4, 5, 11 & SWI/4NW1/4
TOGETHER with Grantor's 50% interest in a parcel of land, referred to as the Granlee Gulch
School Parcel, in the Northwest Quarter of the Southwest Quarter (NW1/4SW1/4) of Section 4,
Township 6 South, Range 96 West of the Sixth Principal Meridian, County of Garfield, State of
Colorado described as follows:
Starting at the Northwest corner of the Southwest quarter of Section 4, Township 6 South, Range
96 West (This Corner is located on the South side of a gulch) running down the gulch South of
East 582 feet to the creek from thence down the creek West of South 207 feet from thence West
336 feet from thence North 363 feet.
EXCEPTING therefrom that portion of County Road 215 that crosses the subject property
including the Roadway survey parcels and slide parcels conveyed to The Board of County of
Commissioners of Garfield County, Colorado in Special Warranty Deed recorded December 30,
1986 in Book 702 at Page 424 and as corrected in instrument recorded June 15, 1987 in Book
714 at Page 1.
A-1
111111111111111111111111111111111111111111 II11111111111
660502 09/24/2004 03 55P B1625 P505 M ALSDORF
S of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
EXHIBIT B
List of Agreements, Licenses, Etc. to be Assigned
(Reservoir Parcel 11 Only)
1. *Right of Way Easement Agreement dated October 16, 1964, by and between
Union Oil Company of California, as grantor and The Mountain States Telephone and Telegraph
Company, as grantee, recorded October 29, 1964 in Book 361 at Page 481. [75)
2. *License for Electric Transmission Line dated September 29, 1964, by and
between Union Oil Company of California, as licensor and Public Service Company of Colorado,
as licensee, recorded December 4, 1964 in Book 362 at Page 317, as amended by Amendment to
License for Electric Transmission Line dated April 3, 1970 and recorded April 20, 1970 in Book
409 at Page 408. [76, 81]
3. *Pipeline Easement Agreement dated September 12, 1982, by and between Union
Oil Company of California, as grantor and Mobil Oil corporation, as grantee, recorded
December 14, 1982 in Book 614 at Page 683. [85]
4. Right of Way and Easement — Facility (Cathodic Protection Station) dated April 1,
1983, by and between Union Oil Company of California, as grantor and Northwest Pipeline
Corporation, as grantee, recorded April 18, 1983 in Book 625 at Page 204. 1861
5. Right of Way and Easement — Facility (Metering Site) dated April 1, 1983, by and
between Union Oil Company of California, as grantor and Northwest Pipeline Corporation, as
grantee, recorded April 21, 1983 in Book 625 at Page 610. [871
6. *Right of Way and Easement — Lindauer dated November 10, 1982, by and
between Union Oil Company of California, as grantor and Northwest Pipeline Corporation, as
grantee, recorded May 2, 1983 in Book 626 at Page 291. [88]
7. *Right of Way and Easement — Davis Point dated November 10, 1982, by and
between Union Oil Company of California, as grantor and Northwest Pipeline Corporation, as
grantee, recorded May 2, 1983 in Book 626 at Page 304. [90]
8. *Upper Parachute Creek Valley Right of Way Agreement dated October 15, 1982,
by and between Union Oil Company of California, a California Corporation, as grantor and
Mobil Oil Corporation, as grantee, recorded December 7, 1983 in Book 640 at Page 1. [911
9. License dated July 9, 1982, by and between Union Oil Company of California, as
licensor and Exxon Corporation, as licensee, recorded December 22, 1983 in Book 640 at Page
852, as amended by Upper Pipeline License Agreement dated May 19, 2000 but effective as of
B-1
1111111 111111111111 III 11111 1111111 11111 111 11111 IIII 111
660502 09/24/2004 03 55P 91.625 P506 11 ALSDORF
9 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
July 9, 1982 by and among Union Oil Company of California and Exxon Mobil Corporation,
recorded June 14, 2000 in Book 1192 at Page 340. [93, 133]
10. Amendment to License Agreement dated November 11, 1983, by and between
Union Oil Company of California, as licensor and Exxon Corporation, as licensee, recorded
December 22, 1983 in Book 640 at Page 859, as amended by Upper Pipeline License Agreement
dated May 19, 2000 but effective as of July 9, 1982 by and among Union Oil Company of
California and Exxon Mobil Corporation, recorded June 14, 2000 in Book 1192 at Page 340.
[94, 133]
11. *Resolution No. 85-01 dated January 7, 1985 regarding approval of an application
for special and conditional land use permits, recorded January 7, 1985 in Book 662 at Page 466.
[95]
12. *Resolution No. 87-20 dated February 17, 1987 regarding approval of a special
use permit for the construction and operation of a water impoundment and associated facilities,
recorded February 18, 1987 in Book 705 at Page 691. [ 100]
13. Right of Way and Easement — Facility (Barrett Metering Site LN00407) dated
March 23, 1990, by and between Union Oil Company of California, as grantor and Northwest
Pipeline Corporation, as grantee, recorded April 18, 1990 in Book 777 at Page 12. [ 110]
14. *Resolution No. 91-027 dated April 1, 1991 regarding approval of a special use
permit for a water impoundment facility, recorded April 2, 1991 in Book 801 at Page 520. [111]
15. *Right of Way and Easement dated March 20, 1992, by and between Union Oil
Company of California, as grantor and Northwest Pipeline Corporation, as grantee, recorded
April 8, 1992 in Book 828 at Page 98. [112]
16. *Service Corridor Agreement dated June 1, 1992, by and between Union Oil
Company of California and Parachute Clean fuels, L.P., recorded June 12, 1992 in Book 833 at
Page 953, as amended by Settlement Agreement dated October 15, 1983 and recorded May 12,
1999 in Book 1129 at Page 28. [113, NIED]
17. *Right of Way and Easement Agreement (Davis Point) dated July 5, 1996, by and
between Union Oil Company of California, as grantor and Colorado Interstate Gas Company, as
grantee, recorded August 1, 1996 in Book 987 at Page 500, as amended by Amendment to Right
of Way and Easement Agreement (Davis Point) dated September 18, 1997 and recorded
October 20, 1997 in Book 1039 at Page 184. [ 114, 121]
18. Right of Way and Easement Agreement (Davis Point) dated July 5, 1996, by and
between Union Oil Company of California, as grantor and Colorado Interstate Gas Company, as
grantee, recorded August 1, 1996 in Book 987 at Page 500. [115]
B-2
1111111111111111111111 Ilill 1111111 111 111 1111
660502 09/24/2004 03:55P B1625 P507 M ALSDORF
10 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
19. Right of Way and Easement Agreement (Service Corridor) dated July 18, 1996,
by and between Union Oil Company of California, as grantor and Colorado Interstate Gas
Company, as grantee, recorded August 19, 1996 in Book 989 at Page 294, as amended by
Amendment to Right of Way and Easement Agreement (Service Corridor) dated September 18,
1997 and recorded October 20, 1997 in Book 1039 at Page 184. [ 116, 121]
20. Access License Agreement dated May 16, 1997, by and between Union Oil
Company of California, as licensor and Barrett Resources Corporation, as licensee, recorded
October 9, 1997 in Book 1037 at Page 676. [ 120]
21. Right of Way and Easement Agreement dated October 16, 1997, by and between
Union OiI Company of California, as grantor and Barrett Resources Corporation, as grantee,
recorded November 17, 1997 in Book 1042 at Page 615. [ 122]
22. Access License Agreement dated May 26, 1998, by and between Union Oil
Company of California, as Iicensor and Barrett Resources Corporation, as licensee, recorded
June 18, 1998 in Book 1073 at Page 440. [ 123]
23. *Utility Easements Agreement dated May 11, 1999, by and between Union Oil
Company of California, as grantor and American Soda, L.L.P., as grantee, recorded May 12,
1999 in Book 1129 at Page 117, as amended by First Amendment to Utility Easements
Agreement dated May 1, 2003 and recorded May 6, 2003 in Book 1467 at Page 187. [127, 153]
24. *Lease Agreement dated June 29, 1999, by and between Union Oil Company of
California, as lessor and Tom Brown, Inc., as lessee, recorded October 7, 1999 in Book 1154 at
Page 492. [ 129]
25. Right of Way and Easement Agreement dated April 10, 2000, by and between
Union Oil Company of California, as grantor and Barrett Resources Corporation, as grantee,
recorded April 26, 2000 in Book 1184 at Page 109. [ 132]
26_ Upper Pipeline License Agreement dated May 19, 2000, effective July 9, 1982, by
and between Union Oil Company of California, as licensor and Exxon Mobil Corporation, as
licensee, recorded June 14, 2000 in Book 1192 at Page 340. [133]
27. *Parachute Valley Easement Agreement dated April 1, 2000, by and between
Union Oil Company of California, Exxon Mobil Corporation and American Soda, L.L.P.,
recorded June 14, 2000 in Book 1192 at Page 354. [134]
28. Pipeline Easement Agreement dated June 22, 2000, by and between Union Oil
Company of California, as grantor and Colorado Interstate Gas Corporation, as grantee, recorded
June 30, 2000 in Book 1195 at Page 291. [135]
B-3
1111111 111111111111111 111111111111111 1111111111111
660502 09/24/2004 03:55P B1625 P508 M RLSDORF
11 of 13 R 66.00 D 0.00 GRRFIELD COUNTY CO
29. *Access License Agreement dated December 6, 2000, by and between Union OiI
Company of California, as licensor and Petroleum Development Corporation, as licensee,
recorded February 8, 2001 in Book 1230 at Page 930, as amended by Amendment to Access
License Agreement dated May 16, 2001 and recorded May 29, 2001 in Book 1256 at Page 271.
[ 136, 140]
30. *Right of Way and Easement Agreement dated February 26, 2001, by and
between Union Oil Company of California, as grantor and Petroleum Development Corporation,
as grantee, recorded March 20, 2001 in Book 1238 at Page 809. [138]
31. Access License Agreement dated March 20, 2001, by and between Union Oil
Company of California, as licensor and Petroleum Development Corporation, as licensee,
recorded April 19, 2001 in Book 1246 at Page 616. [139]
32. *Pipeline License Agreement dated February 22, 2002, by and between Union Oil
Company of California, as licensor and Petroleum Development Corporation, as licensee,
recorded April 29, 2002 in Book 1350 at Page 440. [ 144]
33. Right of Way and Easement Agreement dated March 1, 2002, by and between
Union Oil Company of California, as grantor and Petroleum Development Corporation, as
grantee, recorded April 29, 2002 in Book 1350 at Page 449. [145]
34. Right of Way and Easement Agreement dated March 1, 2002, by and between
Union Oil Company of California, as grantor and Petroleum Development Corporation, as
grantee, recorded April 29, 2002 in Book 1350 at Page 459. [146]
35. Access License Agreement dated September 3, 2002, by and between Union Oil
Company of California, as licensor and Petroleum Development Corporation, as licensee,
recorded September 9, 2002 in Book 1384 at Page 729. [147]
36_ Access License Agreement dated September 3, 2002, by and between Union Oil
Company of California, as licensor and Petroleum Development Corporation, as licensee,
recorded September 9, 2002 in Book 1384 at Page 780. [148]
37. Right of Way and Easement Agreement dated September 3, 2002, by and between
Union Oil Company of California, as licensor and Petroleum Development Corporation, as
licensee, recorded September 9, 2002 in Book 1384 at Page 813. [149]
38. Right of Way and Easement Agreement dated December 19, 2002, by and
between Union Oil Company of California, as grantor and Petroleum Development Corporation,
as grantee, recorded January 9, 2003 in Book 1425 at Page 872. [150]
39. *Right of Way and Easement Agreement (Davis Point) dated June 29, 1994, by
and between Union OiI Company of California, as grantor and Barrett Resources Corporation, as
grantee, recorded March 21, 2003 in Book 1449 at Page 1, as amended by "As Built"
13-4
1111111 11111 ON 111 11111 1111111111111II 1111111111111
660502 09/24/2004 03:55P B1625 P509 M ALSDORF
12 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
Amendment to Right of Way and Easement Agreement (Davis Point) dated effective June 29,
1994 and recorded June 9, 2003 in Book 1478 at Page 843, and further amended by Amendment
to Right of Way and Easement Agreement (Davis Point) dated August 21, 1997 and recorded
April 4, 2003 in Book 1455 at Page 191. [152, 154, 155]
40. Right of Way and Easement Agreement (from Grand Valley Gas Plant to the
Barrett Metering Station) dated effective January 1, 1989, by and between Union Oil Company of
California, as grantor and Bargath Inc. as successor -in -interest to Barrett Resource Corporation,
as grantee, recorded September 15, 2003 in Book 1518 at Page 779. [1561
41. *Easement Agreement dated November 13, 2003, by and between Union Oil
Company of California, as grantor, and Public Service Company of Colorado, as grantee,
recorded January 5, 2004 in Book 1552 at Page 676. [184]
42. Deed and Agreement dated November 9, 1995, by and between Union Oil
Company of California and Chevron Shale Oil Company. [NR]
43. *Utility Line Easement Agreement dated September 13, 1982, by and between
Mobil Oil Corporation and Union Oil Company of California, recorded on March 22, 1983 in
Book 622 at Page 591, as amended by First Amendment to Utility License Agreement dated
February 8, 2000 by and between Mobil Oil Corporation and Union Oil Company of California.
[N/ED]
44. *Pipeline Easement and Usage Right Agreement dated April 22, 1997, by and
between Union Oil Company of California, as grantor and Rulison Gas Company, L.L.C., and
Wildhorse Energy Partners, L.L.C., as the grantee recorded May 5, 1997 in Book 1017 at Page
653. [N/ED]
45. *Right -of -Way and Easement April 22, 1997, by and between Union Oil
Company of California, as grantor and Rulison Gas Company, L.L.C., and Wildhorse Energy
Partners, L.L.C., as the grantee, recorded July 24, 1997 in Book 1027 at Page 420. [N/BD]
46. *Lease and Lease Option Agreement (Meter and Compressor Stations) dated
August 1, 1996, by and between Union Oil Company of California, as lessor and Colorado
Interstate Gas Company, as lessee, recorded on September 6, 1996, in Book 991 at Page 116, as
amended by Amendment to Lease and Lease Option Agreement dated August 1, 1996, by and
between Union Oil Company of California, as lessor and Colorado Interstate Gas Company, as
lessee. [N/ED]
47. *Pipeline Lease Agreement dated August 22, I994 between Union Oil Company
of California, as lessor and Barrett Resources Corporation, as lessee (re: 8" line from upgrade to
Lindauer Meadow). [NR]
48. *Fencing Agreement dated June 5, 1989 between Mobil Oil Corporation and
Union Oil Company, as amended by that Fencing Agreement Renewal 055F-829 (Middlewater
B-5
1 111111 Hill 1111111 01 11111 1111111 11111 111 111111 111 1111
660502 09/24/2004 03:55P 61625 P510 tM ALSDORF
13 of 13 R 66.00 D 0.00 GARFIELD COUNTY CO
Ranch et al; Garfield County, Colorado) executed July 26, 2000 between Union Oil Company of
California and Exxon -Mobil. (NR)
*Note; The assignment and assumption of the above items marked with an asterisk (*) is a partial assignment
and assumption and is effective only insofar as they relate to the Real Property described in Exhibit A.
[Bracketed information refers to Exception Document #: NR — indicates unrecorded document; N/ED — indicates a
recorded document but not an Exception Document].
B-6
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ENCANA OIL & GAS (USA), INC.
NPR WATER STORAGE FACILITY
GARFIELD COUNTY, COLORADO
REVISION 0AAE:
REVISION NUMBER
01/04/05
001
DRAWN 0Y:
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N 14386100
N 14386000 •
N 14385900
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N 14,386,198.57
E 2.455,961,60
1{ 14386200
N 14386100
N 14386000
N 14385900
N 14386300
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E 2.456,040.64
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E 2.455.99100
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E 2.456,151.78
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E 2,456,352.50
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N 14,386,153.66
E 2,456,029.00
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E 2,456.031.50
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E 2,456,029.00
SURGE WATER STORAGE POND
NOMINAL BOTTOM ELEVATION 5803.00
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E 2.455.993.00
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N 16366000
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SCALE 1" = 20' FIVE FOOT FINSHFD CONTOURS SHOWN FOR REFERENCE
NOTES:
1, BASE LAPPING PROVIDED BY OTHERS.
2. ALL CONTOURS ARE TO TOP OF FINISHED GRADE.
3, ENTIRE PLANT -SITE AND ROADWAYS SHALL RECEIVE AN 8
INCH COMPACTED GRAVEL SURFACE
4, ALL CUT AND FILL SLOPES ARE 2:1 UNLESS NOTED OTHERWISE,
0 10' 20' .... ,----- 30' 150'
SCALE: 1' - 20'
A Issued for pl rrnitting purposes.
12l37l�m
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REFERENCE DRAWINGS
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ENCANA. EACana 011E fiat (USA) Inc.
LCCATnN: PARACHUTE. COLORADO
TITLE
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5775 DTC Slvd. .5pIte 290 Phone: 303.714 4840
Englewood, CEJ 80111-3227 Fat: 720.182.8327
F 1
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PIPING AND INSTRUMENTATION DIAGRAM
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Part IV List of Adjoining Property Owners
Board of County Commissioners
Garfield County
109 8th Street, Su 300
Glenwood Springs, CO 81602-3363
Bureau of Land Management
P.O. Box 1009
Glenwood Springs, CO 81602-1009
Bureau of Land Management
2850 Youngfield St.
Lakewood, CO 80215-7076
Chevron Oil Shale Company
PO Box 4158
Englewood, CO 80155-4158
Exxon Corporation
PO Box 53
Houston, TX 77001
Mobil Oil Corp
PO Box 4973
Houston, TX 77210-4973
Williams Production RMT Company
1515 Arapahoe Street, Tower 3 Su 1000
Denver, CO 80202
Puckett Land Company
5460 Quebec St, Su 250
Greenwood Village, CO 80111-1917
John W. Savage, Jr.
PO Box 1926
Rifle, CO 81650-1926
Charles H. & Thomas F. Latham
PO Box 36
DeBeque, CO 81630-0036
Reuben G. & Stephanie D. Oldland
14667 Rio Blanco CR 5
Rifle, CO 81650
Piceance Creek Ranch LTD
11539 Rio Blanco CR 5
Rifle, CO 81650
Aaron C. Woodward
Craig Route Box 1
Glenwood Springs, CO 80601
Part V Fire Control Measures
General
• All facility or operations personnel are instructed as to:
Be aware of local area fire danger for each day
Location of fire control equipment
Proper operation of fire control equipment
Emergency procedures and how to call for additional resources
Welding & Hot Work Operations
• A minimum of one person is dedicated to act as a fire watch during welding or hot
work operations with a fire extinguisher at hand.
• Welding shields are used during grinding operations to prevent sparks from leaving
work areas and igniting vegetation.
• Water trucks are used to wet down ground and nearby vegetation, as conditions
dictate.
• At the close of each day, personnel inspect the area of welding or hot work activities
for any smoldering debris and any conditions conducive to fires.
Communications
• EnCana or Contractor vehicles are typically equipped with cellular communications
on board.
In the event of a fire
• In the event of a fire, all personnel and appropriate equipment on site will be
committed to fire containment and control.
• The BLM and appropriate fire authorities will be notified immediately.
• Direction of fire control efforts will be transferred to appropriate fire fighting agency
personnel upon their arrival on site
Part VI Soil Features
The United States Department of Agriculture Soil Conservation Service Soil Survey of
Rifle Area, Colorado provides the following information about the soils and environment
in the area of the facility:
46-Nihill channery loam, 1 to 6 percent slopes. This deep, well drained, nearly
level to gently slopeing soil is on alluvial fans and side of valleys. Elevation
ranges from 5,000 to 6,500 feet. The soil formed in alluvium derived from Green
River shale and sandstone. The average annual precipitation is about 13 inches,
the average annual air temperature is about 48 degrees Fahrenheit, and the
average frost -free period is about 125 days.
Typically, the surface layer is light gray and very pale brown channery loam
about 11 inches thick. The upper part of the underlying material is very pale
brown very channery loam about 14 inches thick, and the lower part is very pale
brown extremely channery sandy loam and extremely channery loam to a depth of
60 inches.
Included with this soil in mapping are small areas of Arvada and Ildefonso soils.
The Arvada soils are nearly level and Ildefonso soils are steeper. These areas
make up 10 to 15 percent of the soil map unit.
Permeability is moderately rapid, and available water capacity is low. Effective
rooting depth is 60 inches. Surface runoff is slow and the erosion hazard is
moderate. This soil is used mainly for grazing and wildlife habitat. Some small
areas are in irrigated hay and pasture. The native vegetation on this soil is mainly
wheatgrass, needleandthread, and sagebrush.
When range condition deteriorates, forbs and shrubs increase. When the range is
in poor condition, undesirable weeds and annual plants are numerous. Properly
managing grazing maintains and improves range condition. Reducing brush
improves the range. Seeding improves range in poor condition. Crested
wheatgrass, western wheatgrass, and Russian wildrye are suitable for seeding.
Preparing a seedbed and drilling the seed are good practices.
Mule deer, cottontail rabbit, chukar, and squirrel find habitat on this soil.
This soil has few limitations for community development. Community sewaw
facilities will be needed if population density increases.
This soil is in capability subclasses IVe, irrigated, and Vie, nonirrigated.
Part VII Landscaping and Reclamation Plans
Landscaping
Due to the remote location of this facility, landscaping efforts will be directed at erosion
control as opposed to mitigation of visual impacts. Any areas disturbed by construction
or operation activities that are not otherwise covered by liner material or equipment will
be resurfaced with sand and gravel and graded flat or vegetated, as necessary.
Reclamation
The expected life of the NPR Water Storage Facility is 20 years. Reclamation will
consist of the following:
Removal of all surface equipment and liner material.
- Restoration and re -contouring of grade to approximate original conditions.
Replacement of stockpiled topsoil.
Compliance with all prevailing Colorado Oil and Gas Conservation
Commission and Garfield County regulations governing final reclamation.
Water Rights and Beneficial Use of Coal Bed
Methane Produced Water in Colorado
By
Dick Wolfe, P.E.
Glenn Graham, P.G.
Denver, Colorado
October 2002
1.0 Objective
Water is a scarce and valuable resource in Colorado. Any activity that appears to waste it or that
may waste it creates challenges as well as potential opportunities. The beneficial use of produced
water from coal bed methane (CBM) wells is one such potential opportunity that also raises
challenges. This paper explores the state laws and regulations in Colorado governing the use of
produced water. This paper does not attempt to address county or local laws and regulations,
which are beyond its scope.
2.0 Types of Ground Water
In Colorado, there are basically five types of ground water that are administered by the Colorado
Division of Water Resources (CDWR) and the Colorado Ground Water Commission (CGWC).
The CGWC has primary authority over the administration of designated ground water. The five
types are as follows:
Tributary
Ground water that is hydrologically connected to a natural stream system either by surface or
underground flows.
Nontributary
Ground water located outside the boundaries of any designated ground water basin. The
withdrawal of this ground water by a well will not, within 100 years, deplete the flow of a natural
stream at an annual rate greater than one-tenth of one percent of the annual rate of withdrawal.
Not-nontributary
Ground water located within those portions of the Dawson, Denver, Arapahoe, and Laramie -Fox
Hills aquifers that are outside of any designated ground water basin in existence on January 1,
1985, the withdrawal of which will, within 100 years, deplete the flow of a natural stream at an
annual rate greater than one-tenth of one percent of the annual rate of withdrawal.
Designated
Ground water that, in its natural course, is not available to or required for the fulfillment of
decreed surface rights, or ground water in areas not adjacent to a continuously flowing natural
stream, wherein ground water withdrawals have constituted the principal water usage for at least
15 years preceding the date of the first hearing on the proposed designation of the basin, and
which is within the geographic boundaries of a designated ground water basin.
Geothermal
Ground water that contains geothermal energy.
3.0 Geologic Factors Affecting Water Production
CBM gas in Colorado is produced from coal seams that were created by the deposition of large
amounts of organic material in fluvial and marginal marine environments adjacent to the western
margin of the Western Interior Cretaceous Seaway during late Cretaceous and early Tertiary time.
2
The coals are interbedded with mudstones or claystones and sandstones, and are predominately
lenticular in cross section and laterally discontinuous. These coal seams vary in thickness from a
fraction of an inch to several feet. In a few limited areas, individual beds may be more than 10
feet thick. The individual beds may be spread vertically over several hundred feet of stratigraphic
section. The coal bearing sequences are found cropping out on the surface or as deep as 5,000
feet below the surface. At this time, most CBM production in Colorado is from coal seams that
are less than about 3,000 feet below the surface.
Some of the geologic formations containing existing or potential CBM resources in Colorado are
the Raton and Vermejo formations in the Raton Basin; the Denver and Laramie formations in the
Deriver Basin; and formations within the Mesa Verde Group, found in several basins on the
western slope of the state.
CBM gas is molecularly adsorbed on crystal surfaces of the coal, and is held there under the
hydrostatic pressure of the water contained in the coal beds and the adjacent sandstones. In order
for the CBM gas to be liberated or desorbed from the crystalline structure of the coal, the
hydrostatic head, or the reservoir pressure in the coal seam, must first be reduced. This pressure
reduction is accomplished by dewatering the coal seams. To further enhance the productive
ability of the coals, hydraulic fracturing techniques are used to increase the permeability of the
coal seams.
A typical CBM well is drilled and cased through the potential productive interval. Selected
intervals containing the coal seams are perforated and hydraulically fractured, and a down -hole
pump designed to remove large quantities of water is installed. When first placed on-line, a CBM
well will produce significant amounts of water with little or no gas production. Ideally, within a
month or two of being placed on-line gas production will start to increase and water production
will start to decrease as the coal seams become dewatered. After a year or two of production,
water production rates can fall to as little as a few barrels of water per day for individual wells,
while daily gas production rates will increase from essentially nothing to several hundred
thousand cubic feet or more per day.
Ideally, the water produced by the CBM extraction process is water that was contained in only the
coal seams, and not water contained in other parts of the stratigraphic column. Because of the
highly layered or interbedded and lenticular nature of the geologic formations that contain CBM
resources, there are significant barriers to the vertical movement of water. Given the amount of
water being produced during the early life of a CBM well, there has been some concern that there
may be some impact to water bearing zones that might be of suitable quality to be a source of
water for residential, stock watering or irrigation purposes. At this point in time in Colorado, no
documented incidents of direct impact on existing water wells from nearby production of CBM
gas have been reported to CDWR.
Another concern identified is the possible effect on stream systems that flow across the outcrop
areas of coal -bearing formations. Again, the highly interbedded and lenticular nature of these
geologic formations may limit or effectively disconnect the stream systems from the zones from
which the water is being produced. This is an area where further study is certainly warranted.
Historically, CBM produced water in Colorado has typically not been of suitable quality for any
beneficial use, and only recently has some of this produced water been of good enough quality for
some limited beneficial uses. For the most part, beneficial use of produced water in the San Juan
Basin has not been proposed, because the quality of produced water in that area is too poor for
3
most uses, but some concerns have been raised regarding potential effects on surface water flows.
In the Raton Basin of southern Colorado, approximately 5 Mgallday of ground water is produced
from CBM wells. Of this amount, approximately 30% is discharged to natural streams, 30% is
reinjected and 40% is discharged to evaporation pits. The 1.5 Mgallday that is discharged to the
natural streams is done under discharge permits issued by the Colorado Water Quality Control
Division (CWQCD) of the Colorado Department of Public Health and Environment (CDPHE) via
approximately 40 discharge points (equal to approximately 26 gpm on average per discharge
point). Proponents of the use of this produced water should keep in mind that the volume of
water being produced will typically decline quite rapidly during the first year or so of production,
and may approach nothing after a few years. Further, the economic life of a CBM well may not
exceed 10 years.
Other basins in the state are being evaluated for CBM potential, but no development has occurred
to this point in time. Those basins are the southeast part of the Piceance Basin in Delta County,
the southeast part of the Greater Green River Basin, and the Denver Basin.
In addition to the physical limitations described above, there presently are significant legal and
institutional barriers to the beneficial use of CBM produced water.
4.0 Jurisdiction Over Produced Ground Water
4.1 Historical Perspective
The desire to use water from CBM wells has only recently surfaced because the quality of water
from CBM wells has never been good enough for most uses. Multiple agencies regulate and
monitor various aspects of produced ground water, yet no agency oversees and integrates all
aspects. Each agency has its own jurisdiction as established by enabling laws. At least three
different agencies (the Colorado Oil and Gas Conservation Commission (COGCC), CDWR, and
CWQCD) have authority as it relates to the withdrawal, use, and/or disposal of water from a
CBM well, and the relationships between the constitutional provisions, statutory language, and
various rules are extremely complex.
CDWR is aware of overlapping jurisdictional issues between the COGCC and CWQCD.
COGCC has authority over all oil and gas operations, including the generation, transportation,
storage, treatment, or disposal of exploration and production wastes. Water removed from a
CBM well is considered a waste product. The CDPHE rules provide that no person shall
discharge CBM produced water into waters of the state without first having obtained a permit
from CWQCD for such discharge.
4.2 Allowed Beneficial Uses and Restrictions of Ground Water
Whether a use is beneficial is a question of fact and depends on the circumstances of each case.
However, the following uses have been recognized as beneficial uses by CDWR: agriculture,
mining, domestic, manufacturing, stock watering, wildlife watering, irrigation, industrial,
mechanical, commercial, municipal, recreation, minimum stream flows, fire protection, and dust
suppression.
CDWR has jurisdiction over appropriations of water. An appropriation is defined as the
application of a specified portion of the waters of the state to a beneficial use pursuant to the
procedures prescribed by law. Waters of the state in this context means all surface and
underground water tributary to natural streams, except designated ground water as designated by
4
the CGWC. The statutory and case law vests CDWR with jurisdiction over water withdrawn
from a CBM well that is beneficially used.
If an operator or another person wants to beneficially use water from a CBM well, that operator
or person must comply with the Water Right Determination and Administration Act and the
Ground Water Management Act (Water Rights Acts). The person could apply for a water right in
water court and/or file for a well permit. If the person applies for a well permit for water from a
CBM well, that water is presumed tributary, but the person may submit evidence such as
engineering documentation that the water is nontributary. Regardless of whether the water
withdrawn from a CBM well is nontributary or tributary, there are certain statutory requirements
that the water user must meet before obtaining a well permit and/or a water court decree. Any
water discharged into waters of the state (as defined by the Water Quality Control Act) is subject
to appropriation under the Water Rights Acts.
CBM wells are not "wells" as defined in the Water Rights Acts, and operators do not need to
obtain a permit from CDWR to withdraw water from these wells as part of the CBM extraction
process. However, if water from a CBM well is put to beneficial use other than those uses
allowed under COGCC Rule 907 (see below), then CDWR has certain jurisdiction over the water
and the well, and the well is subject to the Rules and Regulations for Water Well Construction,
Pump Installation, and Monitoring and Observation Hole/Well Construction (2CCR 402-2).
4.2.1 COGCC Rule 907
The COGCC statute (COGCC Act) grants certain authority to COGCC to promote oil and gas
conservation, and rescinds any authority of any other agency as it relates to the conservation of
oil and gas. CBM produced water is considered a waste product by operators and must be
properly disposed of to prevent adverse environmental impacts. Pursuant to COGCC rules, an
operator may dispose of water from a CBM well in any of the following ways: 1) inject into a
disposal well; 2) place it in a properly permitted lined or unlined pit for evaporation and or
percolation; 3) dispose the water at a permitted commercial facility; 4) dispose of the water by
road spreading on lease roads outside sensitive areas for produced waters; 5) discharge the water
into waters of the state in accordance with the Water Quality Control Act and the rules and
regulations promulgated thereunder; 6) reuse the water for enhanced recovery, recycling, and
drilling; or 7) mitigation to provide an alternate domestic water supply to surface owners within
the oil and gas field.
4.2.2 Ground Water Permitting by CDWR
Under Colorado law, CBM operators are not required to obtain a permit from the State Engineer
when withdrawing nontributary water unless the produced water is put to a beneficial use. The
State Engineer has authority to issue permits outside designated basins in accordance with section
37-90-137(7), CRS (2002), which is restated as follows:
In the case of dewatering of geologic formations by removing nontributary ground water to
facilitate or permit mining of minerals: (a) No well permit shall be required unless the
nontributary ground water being removed will be beneficially used; and, (b) In the issuance of
any well permit pursuant to this subsection (7), the provisions of subsection (4) of this section
shall not apply. The provisions of subsections (1), (2), and (3) of this section shall apply; except
that, in considering whether the permit shall issue, the requirement that the state engineer find
that there is unappropriated water available for withdrawal and the six -hundred -foot spacing
requirement in subsection (2) of this section shall not apply. The state engineer shall allow the
5
rate of withdrawal stated by the applicant to be necessary to dewater the mine; except that, if the
state engineer finds that the proposed dewatering will cause material injury to the vested water
rights of others, the applicant may propose, and the permit shall contain, terms and conditions
which will prevent such injury. The reduction of hydrostatic pressure level or water level alone
does not constitute material injury.
In the context of this section, the State Engineer considers CBM gas a mineral. As stated above,
if ground water produced from a CBM well is determined to be nontributary, the amount of water
claimed is not based on overlying land ownership. If nontributary ground water is produced to
the surface and discharged, it may be subject to CWQCD regulation.
For water rights purposes, all ground water in Colorado is presumed to be tributary unless there
has been a ruling by the water court or a permit issued by the State Engineer that ground water
from a certain aquifer in a specific area is declared nontributary. Any beneficial use of tributary
ground water is subject to section 37-90-137(1) and (2), CRS (2002). Any use of tributary
ground water requires a well permit and a determination by the State Engineer as to whether or
not the exercise of the requested permit will materially injure the vested water rights of others.
Also, the requirement that the State Engineer find that there is unappropriated water available for
withdrawal and the six -hundred -foot spacing requirement in subsection (2) of this section shall
apply.
5.0 Conclusions
A rough assessment of the opportunities to use produced water from CBM wells is that they are
limited at best. Much of the water is too poor in quality to be legally discharged. Because most
basins are over -appropriated, senior water rights claims complicate the issue. Because water
production rates from CBM wells decline as gas is produced, CBM wells are unreliable as long-
term sources of water. In limited areas where produced water quality is sufficient and vested
water rights owners would not be injured, there may be some opportunities for beneficially using
water produced from CBM wells in the short term. Such opportunities are not without cost or
legal and technical complication.
Due to the complex and overlapping regulatory authority of state agencies, many companies are
collaboratively working with local residents, concerned citizens, and state agencies to mitigate
and minimize impacts of CBM production. It has been only recently that the CDPHE, COGCC,
and the CDWR have coordinated efforts to understand and minimize the conflicts in regulatory
authority and decision-making. These efforts have resulted in many public awareness meetings
with both the general public and legislative committees on oil and gas. New rules and regulations
were adopted by the COGCC to clarify jurisdictional uses of CBM produced water. The state
must continue to educate and communicate with citizens and industry representatives to
understand the impacts of CBM development and the statutory and regulatory environment in
which it occurs.
6
PAY
TO THE
ORDER OF
WAGON WHEEL CONSULTING, INC.
111 E. 3RD ST., SUITE 213
RIFLE, CO 81650
(970) 625-8433
Garfield County Planning Department
Four Hundred and 00/100*************************************
MEMO
Garfield County Planning Department
108 8th Street, Suite 201
Glenwood Springs, CO 81601
SUP Application Fee
WELLS FARGO BANK, N.A.
WWW.WELLSFARGO.COM
23-7/1020
******************************************
2/3/2005
**400.00
**********
5498
DOLLARS
NP
•
8
n'00549811' LO20000761:696LE, 34554u■
Xcel Energy=~
PUBLIC SERVICE COMPANY
January 31, 2005
SEM Construction
Jay Johnston
715 Horizon Dr. Suite #219
Grand Junction, CO, 81506
RE: Request for removal of electric facilities; DV# 120261;
Service Address: 10735 County Rd. 215
Dear Mr. Johnston:
2538 8lichmann Avenue
Grand Junction, Colorado 81505
Thank you for your time and consideration in regard to your project at the referenced address. As your
primary contact person at Public Service, I'm committed to providing the coordination and support
needed to satisfy your energy needs and meet your project schedule.
Based on the information you have provided and the service requirements requested, I have completed
the engineering design and cost estimate to remove the existing overhead electric line. The total cost to
remove the facilities requested and described below is $2,012.57. This estimate is valid until 03/31/2005
and is subject to price increases thereafter. Should you request a revised estimate prior to the
expiration, an additional Engineering charge may be required.
These total costs are as follows:
Electric Distribution Removal
$2,012.57
TOTAL $2,012.57
If this project is constructed during frost conditions, you will be billed for the depth of frost encountered,
snow removal and/or any additional costs incurred providing service. These additional charges are
"non-refundable".
Construction scheduling will be contingent on your acceptance of the design / costs, completion and
return of all necessary documents, and any applicable payment. Please have the party responsible for
your job site coordination review the List of Standard Contingencies, Concurrence Sketch and notify me
of any problems in complying with these requirements. Please sign the enclosed Contingency List,
Concurrence Sketch and return with your construction payment to me at our office at 2538
Blichmann Avenue, Grand Junction, CO 81505. Construction cannot be scheduled until it is
received. Removal may also be contingent on scheduling of the other utilities (QWEST, AT&T
Broadband) utilizing the trench. It is your responsibility to make application with these other utilities and
coordinate their construction dates as well. You will need to keep us informed of your construction
scheduling changes, as they will also effect our scheduling of this project. To minimize any possible
delay in meeting your construction schedule, it is imperative that you notify us of your intentions and
return your required paperwork as soon as possible. The actual date of facilities installation is also
dependent upon material / manpower availability and prior construction commitments. The sheets
marked "COPY" are for your records.
As your primary contact for this project, I may be reached at (970) 244-2695. My normal business hours
are from 7:OOam to 5:30pm Monday through Thursday. If I am unavailable and your need is
immediate, you may contact Jon Price, Designer at (970) 244-2693 or Dan Steinkirchner, Engineering
Manager at (970) 244-2656.
Should you have any questions or concerns relative to the information above, please contact me as
soon as possible. We look forward to being your energy provider.
Sincerely,
Till on McSchooler
Planner— Design Services
(970) 244-2695
FAX (970) 244-2661
tilimon.mcschooler@ccelenergy.com
Enclosures: Contingency List
• Page 2
Xcel Energy=°
PUBLIC SERVICE COMPANY
2538 Blichmann Avenue
Grand Junction, Colorado 81505
ELECTRIC CONTINGENCY LIST
CUSTOMER: SEM Construction
ADDRESS: 715 Horizon Dr. Suite #219
CITY: Grand ,function, CO 81506
DV NO: 120261
SERVICE ADDRESS J 10731 y Rd. 215
SIGNATURE
DATE a. 7/
PSCo has completed the engineering design and cost estimate for your electric and gas distribution request. PSCo
will install the facilities as shown on the attached engineering sketch when all contractual obligations and customer
supplied conditions are met. The specified conditions listed below were used to determine the most effective design
to meet your request, If, for any reason, this does not meet your request as intended, please review with PSCo
Engineering personnel. Engineering will discuss any possible revision and will expedite any necessary revised costs
in order to meet your schedule as planned. (Please be aware that additional estimates may be subject to re-
engineering charges.) PSCo looks forward to completing the installation of these facilities for you and providing for
any future energy needs you may have.
GENERAL:
• All necessary easements and rights-of-way must be provided to PSCo prior to the start of construction.
• The design and estimate are contingent upon PSCo acquiring the following permits and/or approvals:
r Town Permit
County Permit
11 State Highway crossing permit
LI Railroad Crossing permit
n Bureau of Land Management (BLM) approval
O Grading and drainage permit -
0.. Water Board crossing
• Special permit
O Corps of Engineer's permit
• Necessary curve points and property pins must be staked, labeled and visible in the field for the duration of said
project. Property corners can consist of wood laths. Laths are to be labeled with corresponding lot corners.
• Water line, sewer lines septic systems, leach fields or any other underground obstruction must be staked, flagged
and installed prior to construction.
• All sidewalks, curbs, asphalt pedestrian paths or bike paths (parallel to streets) must be installed prior to
installation of our facilities. PSCo must approve variances to this requirement prior to construction.
• All street / easements / service lateral routes are to be within plus or minus 6 inches of final grade except for
transformer, switch cabinet locations, pedestal, gas regulator station, meter installations and other surface
mounted equipment, which must be exact final grade.
• It is the customer's responsibility to coordinate the installation of Cable TV and Telephone facilities. If these
facilities are to utilize the common trench, PSCo electric facilities will be installed prior to any other facility
installation.
• A pre -construction meeting must be held with both PSCo construction department and the developer's
representative to verify route, facility placement and final grade.
• Pouring/paving of driveways and landscaping must be delayed until after installation of facilities (services
excepted).
• Where slopes exist that prohibit trenching, the customer must provide temporary grade for trenching equipment.
• The construction route must be clear of all obstructions.
X Construction material must be cleared from route.
X Temporary trailers, buildings or other obstacles must be moved.
X Customer will clear trees along the construction route.
• PSCo is required to provide the following trench specifications:
O Wheel Compaction 0 feet of trench
O 95% Standard Proctor Compaction 0 feet of trench
• Customer is responsible for installing conduits for all street crossings. Conduit location, number of and size are
shown on enclosed construction drawing to allow for installation of curbs, gutters, sidewalk, and paving of
streets prior to our construction. Any additional costs incurred as a result of improperly installed or missing
conduits will be billed to the customer as additional charges. Conduits are to extend 3 feet past the hack of
sidewalk. Sleeves for ELECTRIC lines must be ELECTRICAL GRADE, SCHEDULE 40 PVC conduit.
Sleeves for NATURAL GAS lines will be WHITE PVC. A YELLOW strip must be painted on this pipe to
designate its use for NATURAL GAS only.
• PSCo will not be responsible for the repair or replacement costs resulting from damages to items which are not
marked prior to beginning this installation.
• Customer will be responsible for replacing existing sod, shrubs, trees, etc. and repairing existing paving, at no
cost to PSCo
• The customer must see that all PSCo facilities remain accessible at all times for routine maintenance purposes.
• All roof drains are to be directed away from PSCo equipment in a manner to prevent damage and/or settling of
facil ities.
• All areas of the door sides of transformers and/or switch cabinets are to remain clear of obstructions for 8 feet
minimum distance at all times for maintenance purposes.
• The developer/Owner shall be responsible' for disposal, in accordance with federal and state law(s) and local
ordinances, of any soil and debris excavated from the property that is contaminated with hazardous substances,
wastes, petroleum, etc.
• If you prefer to avoid frost charges by waiting till frost depth is less than six inches, you must notify PSCo at the
time of your application for service installation.
Please note that the owner or operator, as defined in State Law CRS 1973, 9-1-5-101 (Senate Bill No. 93-155), is
responsible for providing clearly identifiable markings indicating the location of privately owned facilities (i.e.
irrigation lines, decorative lighting, septic lines, etc.) in the proposed excavation area. These facilities should be
marked pursuant to the Uniform Color Code as approved by the Utility Location and Coordinating Council of the
American Public Works Association:
Red- Electric Power Lines, Cables, Conduits, and Lighting Cables
Yellow- Gas, Oil, Steam, Petroleum of Gaseous Materials
Orange- Communications, Alarm or Signal Lines, Cables or Conduit
Blue- Water, Irrigation and Slurry Lines
Green - Sewers and Drain Lines
Pink- Temporary Survey Markings
White - Proposed Excavation
A mark located 18 inches horizontally from the exterior sides of the facilities is considered a correct location. PSCo
construction crews and/or our contractors will contact the responsible party a minimum two days prior to initiation
of construction and request location of the private facilities. The customer who initiated the request for the
installation of gas and electric distribution facilities is responsible for providing the appropriate contact person and
their phone number to PSCo.
Facilities that are damaged and did not have a correct locate will be repaired and billed as appropriate to the
customer, owner or operator.
FORM (K) 322 - 24 - 0285
0 41
A/JL1-1 r�
.f ^ eL L ,'
LEGEND
DATE RTLN
REOl1E5TED
TELEPHONE WATER
PHONE PHONE
OLL) L1AAL7�4
Meter Lo. ation(s)..anc
Contingencies:.
X
PUBLIC SERVICE COMPANY OF COLORADO
ELECTRIC DISTRIBUTION ENGINEERING DEPT.
RIPTION:
79JL I C71. 4 r o- C -UDC -AL
ELECTRIC SEWER "Z
PHONE PHONE �/f1Jh c✓�Gr4dre�(o �t/L`L..� fJ'VO1 -
STEAM GAS
PHONE PHONE
Jan 21 05 02:27p Karen Lee 9709289828 p.2
INDUSTRIAL CONSTRUCTION
Con-Sy.Inc.
P.O. BOX 26 • 28485 HWY 6&24 #1A • RIFLE, CO 81650 • (970) 625-2200 • FAX (970) 625-1343
1-21-2004
Tom Brown Inc.
2764 Compass Drive, St. 110
Grand Junction CO. 81506
Att; Dan Zwierzchowski
RE; Water storage pond lining system quote.
Dear Mr. Zwierzchowski,
Thank you for the opportunity to quote the pond liner system for Encana at the old Unocal site.
Our price and scope of work are as follows;
1. Mob- delmob 1.5 $5,800
2. Excavate and backfill liner key trench LS $3,750
3. Install pond liner system per drawings supplied. 152,000 SF @ $1.65 SF=$250,S00
4. Install Leak detection System LS $ 4,750
5. Install 8 oz. Mirify under pond liner in leau of over excavation of pond bottom, this to be at the option of
the liner contractor and owner after the finished grades have been reviewed.
152,000 SF @ $.18 SF = $27,360
Liner price includes taxes, 1 year installation warranty, 5 year material warranty.
Exclusions; dewatering, survey, all earthwork associated with the subgrade prep,
Please feel free to contact our office with any questions.
Thank ou,
Thomas Lee
President
""ro -f-Ai41
a9 / o
QUALITY ASSURANCE MANUAL
FOR THE INSTALLATION OF
FLEXIBLE MEMBRANE LINING SYSTEMS
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1062 Singing Hills Road
Parker, Colorado 80138
(303) 841-2022
(800) 524-8672
(303) 841-5780 FAX
Colorado Lining International
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TABLE OF CONTENTS
INTRODUCTION 1
1.1 Terms of Reference 1
1.1.1 Purpose 1
1.1.2 Quality Assurance and Quality Control 1
1.1.3 Lining Materials 1
1.1.4 Scope of Quality Assurance and Quality Control 1
1.1.5 Units 2
1.1.6 References 2
GEOMEMBRANE MANUFACTURING AND DELIVERY 2
2.1 Manufacturing 2
2.1.1 Geomembrane Raw Material 2
2.1.2 Geomembrane Manufacturing 3
2.1.3 Rolls 3
2.2 Delivery 3
2.2.1 Transportation and Handling 3
2.2.2 Storage 4
INSTALLATION 4
3.1 Anchor Trench Systems 4
3.2 Geosynthetic Placement 4
3.2.1 Field Panel Identification 5
3.2.2 Field Panel Placement 5
3.2.2.1 Location 5
3.2.2.2 Installation 5
3.2.2.3 Weather Conditions 5
3.2.2.4 Method of Placement 5
3.2.2.5 Damage 6
3.3 Field Seaming 6
3.3.1 Seam Layout 6
3.3.1.1 Field Joints 6
3.3,1.2PipePenetrations .6
3.3.2 Seaming Equipment and Products 7
3.3.3 Seam Preparation 7
3.3.4 Weather Conditions for Seaming 7
Cold Weather Seaming of Polyethylene Liners „8
3.3.5 Trial Seams 9
Failed Test Seams 9
3.3.6 General Seaming Procedure 9
3.3.7 Non-destructive Seam Continuity Testing 9
3.3.7.1 Concept 9
3.3,7.2 Vacuum Testing 10
3.3.7.3 Pressure Test Specifications for Dual Hot Wedge Welds .11
3.3.7.4 Air Pressure Testing (for Double Fusion Seam only) 11
3.3.8 Destructive Testing 11
3.3.8.1 Concept 11
3.3.8.2 Location and Frequency 12
3.3.8.3 Sampling Procedure 12
3.3.8.4 Size of Samples 12
3.3.8.5 Field Testing 13
Destructive Testing of Seams 13
3.3.8.6 Procedures for Destructive Test Failure 14
3.4 Defects and Repairs 14
3.4.1 Identification 14
3.4/ Evaluation 15
3.4.3 Repair Procedures 15
3.4.3.1 Geomembrane Repair Procedures 15
3.4.3.2 Geomembrane Verification of Repairs 16
3.5 Backfilling of Anchor Trench 16
3.6 Lining System Acceptance 16
3.7 Soils in Contact with the Geomembrane 16
Soil/Earth Cover on Top of Geomembrane 16
Typical Resin Properties 17
DETAILS OF HOT WEDGE SYSTEM 17
SEAM TESTING PROCEDURE 21
FIELD SEAM FAILURE 22
PEEL TEST FOR HOT WEDGE SEAM WELD 22
DETAILS OF EXTRUSION WELDING SYSTEM 23
DEFECT (LEAK) TESTING OF SYNTHETIC LINERS 24
A LEAK DETECTION SYSTEM USING SPARK TESTABLE GEOMEMBRANE 25
CONDUCTIVELINER TYPICAL QUESTIONS 26
SPARKTESTING CONDUCTIVE LINER 28
GEOSYNTHETIC TERMINOLOGY 30
HDPE REFERENCE LIST 33
DIAGRAMS
ANCHOR TRENCH DETAILS D1
MULTIPLE LAYERED ANCHOR TRENCH D2
WEDGE WELD 133
EXTRUSION WELD D4
GAS VENT D5
HOPE PIPE BOOT D6
PIPE PENETRATION WITH COLLAR D7
PIPE PENETRATION DOUBLE LAYER SYSTEM WITH COLLAR 08
BATTEN ATTACHMENT - SINGLE LAYER D9
BATTEN ATTACHMENT - DOUBLE LINER D10
Introduction
1.1 Terms Of Reference
1.1.1 Purpose
This manual addresses the quality assurance and quality control of the installation of
flexible membrane liners used by Colorado Lining International (CLI) in hazardous waste
disposal landfills, surface impoundments or other installations as specified by the owner
and/or engineer. This manual therefore delineates the quality procedures and standards
for production and installation.
This material reflects the requirements of the Hazardous and Solid Waste Amendments
of 1984 to the Resource Conservation and Recovery Act (RCRA), and "Construction
Quality Assurance for Hazardous Waste Land Disposal Facilities, Public Comment Draft",
Document EPA/530-5W-86-031, July, 1986.
1.1.2 Quality Assurance and Quality Control
In the next context of this manual, quality assurance and quality control are defined as
follows:
Quality Assurance - A planned and systematic pattern of all means and actions designed
to provide adequate confidence that items or services meet contractual and regulatory
requirements.
Quality Control -- Those actions which provide a means to measure and regulate the
characteristics of an item or service to contractual and regulatory requirements.
In the context of liner production and installation.
In the context of liner production and installation:
Quality Assurance refers to means and actions employed by CLI to assure conformity of
the lining system production and installation with the Quality Assurance Plan and
Specifications.
Quality control refers to those actions taken by the Manufacturer, Fabricator and Installer
to ensure that the materials and the workmanship meet the requirements of the plans
and specifications.
1.1.3 Lining Materials
For purposes of this document, the term "geomembrane" is applied to flexible membrane
liners. More specifically "geomembrane" refers to polyethylene geomembranes, with
either smooth surface or textured surface for increased friction. These geomembranes
include high density polyethylene (HDPE) membranes which are made from resins with a
specific gravity greater than 0.935.
The quality assurance of a geosynthetic liner system is addressed herein in its entirety,
including all stages from manufacture to installation.
1
1.1.4 Scope of Quality Assurance and Quality Control
The scope of this manual includes the quality assurance applicable to manufacturing,
shipment, handling, and installation of all geosynthetics. In particular, full-time quality
assurance of the installation of geomembranes is essential.
This manual does not address design guidelines, installation specifications, or selection of
geomembranes.
This manual does not address the quality assurance of soils, except in cases where soli
placement may have an influence an the geomembrane.
1.1.5 Units
In this manual, all properties and dimensions are expressed in U.S. units, with
"equivalent" SI units in parentheses. It should be noted that the conversion is typically
only accurate within ten percent. In cases of conflict or clarifications, the U.S. units shall
be deemed to govern.
1.1.6 References
The manual includes references to test procedures of the American Society for Testing
and Materials (ASTM), the Federal Test Method Standards (FTMS) and the "Standards for
Flexible Membrane Liners" of the National Sanitation Foundation (NSF). Recognizing the
changing nature of the above standards and the geosynthetic industry are Targe, this
manual is subject to periodic revision.
Geomembrane Manufacturing and Delivery
2,1 Manufacturing
2.1.1 Geomembrane Raw Material
The raw material shall be first quality polyethylene resin containing no more than 2%
clean recycled polymer by weight, and meeting the following specifications for HDPE:
Specific Gravity (ASTM D792 Method A or ASTM D1505):?. 935 prior to the addition of
carbon black. Melt Index (ASTM D1238 Condition 190/2.16): 0.05 - 0.3 g/10 min.
Quality control testing shall be carried out to demonstrate that the product meets this
specification.
Prior to project completion, CLI shall provide the Project Manager with the following
information:
The origin (resin supplier's name, resin production plant), identification (brand
name and number) and production date of the resin;
A copy of the quality control certificates issued by the resin supplier noting
results of density and melt index;
Reports on the tests conducted by the Manufacturer to verify the quality of the
resin used to manufacture the geomembrane rolls assigned to the considered
2
facility. These tests should include specific gravity (ASTM D792 Method A or
ASTM D1505) and melt index (ASTM D1238 Condition 190/2.16); and
Reports on the tests conducted by the Manufacturer to verify the quality of the
sheet.
2.1.2 Geomembrane Manufacturing
CEI shall provide the Project Manager/Owner with a property sheet including, at a
minimum, all specified properties, measured using test methods indicated in the
specifications, or equivalent.
The owner or Owner's Representative shall verify that:
The property values certified by the Manufacturer meet all of the specifications;
and
The measurements of all properties by the Manufacturer are properly
documented, and that the test methods used are acceptable,
2.1.3 Rolls
After receipt of material, CU shall provide the Project Manager with one quality control
certificate for every two rolls of geomembrane provided. A responsible party shall sign
the quality control certificate. The quality control certificate shall include:
Roll numbers and identification; and
Results of quality control tests. As a minimum, geomembrane results shall be
given for thickness, tensile strength, and tear resistance, evaluated in
accordance with ASTM test methods approved by the Designer.
2.2 Delivery
2.2.1 Transportation and Handling
CLI through and independent trucking firm or other party as agreed upon by the owner
will perform transportation of the geomembrane. If the geomembrane arrives on site
prior to CU project personnel, the customer is responsible for off-loading rolls.
Geomembrane, when off-loaded, should be placed on a smooth, well drained surface,
free of rocks or any other protrusions which may damage the material. No special
covering is necessary for geomembrane.
The following should be verified prior to off-loading geomembrane:
Handling equipment used on the site is adequate and does not pose any risk or
damage to the geomembrane; and personnel will handle the geomembrane with
care.
Any welding rod delivered to the site prior to CU arrival should be kept covered and dry,
or placed in a storage facility.
Upon arrival at the site, CLI shall conduct a surface observation of all rolls for
defects and for damage. This inspection shall be conducted without unrolling rolls unless
defects or damages are found or suspected. CU shall indicate any damage to the
3
Project Manager.
2.2.2 Storage
The Project Manager shall provide storage in location (or several locations) such that on-
site transportation and handling are minimized. Storage space should be protected form
theft, vandalism, passage of vehicles, and be adjacent to the area to be lined.
Installation
3.1 Anchor Trench Systems
All Anchor Trench Systems shall be excavated by the Earthwork Contractor
(unless otherwise specified) to the lines and widths shown on the design
drawings, prior to geomembrane placement.
If the anchor trench is excavated in day susceptible to desiccation, no more than
the amount of trench required for the geomembrane to be anchored in one day
shall be excavated (unless otherwise specified) to minimize desiccation potential
of the anchor trench clay soils.
Slightly rounded corners shall be provided in the trench where the geomembrane
adjoins the trench so as to avoid sharp bends in the geomembrane. No large
rocks or clay lumps shall be allowed to underlie the geomembrane in the anchor
trench.
Balling of the anchor trench shall be conducted in accordance with Section
3.5,
See Diagrams D-1 and D-2 for a detailed drawing of anchor systems.
For attaching liners to structures, see Diagrams D-8 & D-10.
3.2 Geosynthetic Plac ment
Immediately prior to installation of the designed geomembrane liner, CLI and the
owner or the owner's representative shall observe the surface. The derision to
repair cracks, if any, should be made only by the Project Manager. CLI and the
Project Manager for joint approval shall walk the subgrade. CLI will sign
acceptance of the surface condition of the subgrade. The integrity of the
underlying soil is the responsible of the owner/earthwork contractor.
Subgrade Preparation Recommendations:
No liner shall be placed on surfaces not previously found acceptable by the CU
supervisor or his agent.
No sharp stones or other hard objects that could penetrate the liner shall be
present in the top 1 Inch of the surface to be covered.
Surfaces to be lined shall be smooth and free of al rocks, sharp stones, sticks,
roots, sharp objects, or debris of any kind. The surface should provide a firm;
unyielding foundation for the geosynthetic with no sudden, sharp or abrupt
4
changes or breaks in grade.
3.2.1 Field Panel Identification
A field panel is the unit of geomembrane, which is to be seamed in the field; i.e.,
a field panel is a roll or a portion of roll cut in the field.
At the time of installation, the CLI Field Supervisor shall give each field panel an
"identification code" (Number or letter -number). The Project Manager shall
agree upon this identification code. This field panel identification code shall be
as simple and logical as possible.
3.2.2 Field Panel Placement
3.2.2.1 Location
Field Panels are located by the CLI Field Supervisor in a manner consistent with
the Specification and best suited to existing site conditions.
3.2.2.2 Installation Schedule
Field Panels are placed one at a time, and each field panel is seamed
immediately after its placement (in order to minimize the number of unseamed
field panels); and
CLI shall record the identification code, location, and date of installation of each
geomembrane field panel. Daily progress Report to be submitted to Project
Manager for forwarding to Engineer (Owner), also on a daily basis.
3.2.2.3 Weather Conditions
Welding placement shall not take place during any precipitation, in the presence
of excessive moisture, blowing dust, or in the presence of excessive winds
(unless wind barriers are provided). In addition, welding shall not take place in
an area of pbnded water.
3.2.2.4 Method of Placement
CLI shall verify the following:
Any equipment used does not damage the geomembrane by handling,
trafficking, excessive heat, leakage of hydrocarbons, or other means;
The prepared surface underlying the geomembrane has not deteriorated since
previous acceptance and is still acceptable immediately prior to geosynthetic
placement;
Any geosynthetic elements immediately underlying the geomembrane are clean
and free of debris;
All personnel working on the geomembrane do not smoke, wear damaging
shoes, or engage in other activities which could damage the geomembrane;
5
The method used to unroll the panels does not cause scratches or crimps in the
geomembrane and does not damage the supporting soil;
The method used to place the panels minimizes wrinkles (especially differential
wrinkles between adjacent panels;
Adequate temporary loading and/or anchoring (e.g., sand bags, tires), not likely
to damage the geomembrane, has been placed to prevent uplift by wind (in case
of high winds, continuous loading, e.g., by adjacent sand bags, or soil is
recommended along edges of panels to minimize risk of wind flow under the
panels);
Direct contact with the geomembrane is minimized; i.e., geotextiles, extra
geomembrane, or other suitable materials in areas where excessive traffic may
be expected protect the geosynthetic(s).
CLI shall inform the Project Manager if the preceding conditions are not fulfilled.
3.2.2.5 Damage
CLI shall inspect the geomembrane after placement and prior to seaming for
damage. CLI shall advise the Project Manager If any of the geomembrane
should be repaired or accepted. Damaged geosynthetic or portions of damaged
geosynthetics, which have been rejected, shall be marked and their removal
from the work area recorded by CLI. Repairs to geomembrane shall be made
according to procedures described in section 3.4.
3.3 Field Seaming
3.3.1 Seam Layout
In general, seams should be oriented parallel to the line of maximum slope; i.e., oriented
along, not across, the slope. In corners and odd -shaped geometric locations, the
number of seams should be minimized. No horizontal seam should be less than 5 feet
(1.5 m) from the toe of the slope or areas of potential stress concentrations unless
otherwise authorized. When full roll lengths do not extend past the toe of the slope,
panel ends may be seamed provided the panel end is cut at and angle greater than
45° to minimize seam stress.
A seam numbering system compatible with a panel numbering system shall be agreed
upon at the Pre -Constructing Meeting.
3.3.1.1 Field Joints
Overlapping adjacent sheets shall make Field joints, approximately 3
inches for extrusion welding and 4 inches for hot wedge welding.
3.3.1.2 Pipe Penetrations
Polyethylene pipe penetrations shall be used for pipes penetrating
through the lined area. When pipe composition is polyethylene, the
fittings should be extrusion welded directly to the pipe if space permits.
For dissimilar materials, the fittings should be fastened by mechanical
means and sealant applied between the pipe and fittings.
6
See details for pipe penetrations in Diagrams D-6, D-7 & D-8.
33.2 Seaming Equipment and Products
The approved processes for held seaming are extrusion welding and fusion (hot wedge)
welding. Proposed alternate processes shall be documented and submitted to the Owner
or their representative for their approval.
The extrusion welding apparatus shall be equipped with gauges giving the temperature
of the apparatus at the nozzle and extruder barrel.
The fusion welding apparatus shall be equipped with gauges giving the applicable
temperatures.
CU shall verify that:
Equipment used for seaming is not likely to damage geomembrane;
The extrusion welder is purged prior to beginning a seam until all heat -degraded
extrudate has been removed from the barrel;
The electric generator is placed on a smooth base such that no damage occurs to the
geomembrane;
Buffing shall be completed no more than one (1) hour prior to extrusion welding (buffing
is not necessary for hot wedge welding);
A smooth insulating plate or fabric is placed beneath the hot welding apparatus after
usage; and
The geomembrane is protected from damage in heavily trafficked areas.
3.3.3 Seam Preparation
CLI shall verify that:
Prior to seaming, the seam area is clean and free of moisture, dust, dirt, debris of any
kind, and foreign material, and
Seams are aligned with the fewest possible number of wrinkles and "hshmouths".
3.3.4 Weather Conditions for Seaming
The normally required weather conditions for seaming are as follows:
The high temperature limit for welding is the temperature at which the well being of the
crew becomes uncertain.
Unless authorized in writing by the Project Manager, no seaming shall be attempted at
ambient temperatures below So Fahrenheit.
The colder the weather, the slower the welding speeds possible for effective welding.
Further detail for cold weather welding follows in this section.
7
In all cases, the geomembrane shall be dry and protected from the wind.
CLI shall verify that these weather conditions are fulfilled and will advise the Project
Manager if they are not. The Project Manager Shall then decide if the installation shall be
stopped or postponed.
Cold Weather Seaming of Polyethylene Liners
Cold weather welding restrictions exist because problems associated with hot air seaming
techniques have been mistakenly applied to extrusion welds. The CLI extrusion weld,
however, has been successfully employed in cold weather on several job sites. With the
assistance of preheating the sheet, the CLI weld had been applied as low as -5?F. Both
the CLI extrusion weld and hot wedge weld are able to overcome cold weather welding
restrictions because of their unique designs.
CLI's extrusion weld is not solely temperature dependent. It combines pressure,
extrudate, and mixing action in addition to temperature, to bond the liner together. The
mixing action means that convective heat transfer takes place in addition to conductive
heat transfer. Overall heat transfer is thus improved, and sensitivity to ambient
temperature is dramatically reduced.
The CLI extrusion welder is capable of continuously monitoring and controlling the
temperatures of the extrudate and the zone of contact for independence of
environmental conditions. To control the molten bead temperature accurately and
to ensure no fluctuation out of the predetermined range the machine has:
a. An over capacity heater band on the extruder.
b. An extra over capacity heater band on the nozzle.
c. A separate proportional temperature controller for each heater band.
d. The nozzle thermocouple positioned approximately 1/8 inch from the end of
the nozzle which rides on the sheet.
The CLI hot wedge welder lifts the sheet slightly to minimize the effects of subcooling
from a frozen sub -base. Temperature controls can be adjusted to guarantee fully
integrated welding as demonstrated by peel testing.
To guarantee quality welding in cold weather, the following procedures are
recommended for CU welds:
The sheet should be preheated before welding any time ice crystals are present in the
weld path.
When strong winds are present, a shield of some sort should be set in place to prevent
large convection heat losses from the welding gun during seaming.
Test welds should always be prepared and tested before seaming in order to gauge
appropriate welding conditions. (Example: Welding machine temperatures should be
set higher and welding rates slowed down.)
3.3.5 Trial Seams
8
Trial seams shall be made on fragment pieces of geomembrane liner to verify that
seaming conditions are adequate. Such trial seams shall be made at the beginning of
each seaming period (start of day, midday, and anytime equipment is turned off and
allowed to cool down) for each seaming apparatus used. Trial seams shall be made
under the same conditions as actual seams.
The trial seam sample shall be approximately 3 feet (LO m) long by 1 foot (0.3 m) wide
(after seaming) with the seam centered lengthwise. Seam overlap shall be nominally
4 inches; 3 inches minimum.
Two adjoining specimens each 1 inch (25 mm) wide, shall be cut from the trial seam
sample by the installer. The specimens shall be tested respectively in shear and peel
using a field tensionmeter, and they should not fail in the seam. If the additional
specimen fails, the entire operation shall be repeated. If the additional specimen fails,
the seaming apparatus and seamer shall not be accepted and shall not be used for
seaming until the deficiencies are corrected and two consecutive successful full trial
welds are achieved.
3.3.6 General Seaming Procedure
Unless otherwise specified, the general seaming procedure used by CLI shall be as
follows:
The rolls of geomembrane shall be overlapped by approximately four inches (100 mm)
for fusion welding and three inches for extrusion welding.
"Fishmouths" or wrinkles at the seam overlaps shall be cut along the ridge of the wrinkle
in order to achieve a flat overlap. The cut "fishmouths" or wrinkles shall be seamed and
any portion where the overlap is inadequate shall then be patched with an oval or round
patch of the same geomembrane extending a minimum of 6 inches beyond the cut in all
directions.
Seaming shall extend up the panels and well into the anchor trench.
All cross seams are to be extrusion welded where they intersect, The top flap of
membrane is removed in the area to be extrusion welded and the weld area Is ground
parallel to the seam prior to welding.
For fusion welding on wet or muddy subgrade, a movable protective layer of plastic may
be required to be placed directly below the overlapped membranes being seamed. This
is to prevent any moisture buildup between the sheets to be welded and/or to provide
consistent rate of speed for the wedge welding device.
3.3.7 Nondestructive Seam Continuity Testing
3.3.7.1 Concept
CLI shall nondestructively test all field seams over their full length using a
vacuum test unit, air pressure testing, or other approved method. The purpose
of nondestructive tests is to check the continuity of seams. It does not provide
information on seam strength. Continuity testing shall be carried out as the
9
seaming work progresses, not at the completion of all field seaming.
3.3.7.2 Vacuum Testing
The equipment shall be comprised of the following:
A vacuum box assembly consisting of a rigid housing , a transparent viewing
window, a soft neoprene gasket attached to the bottom, porthole or valve
assembly, and a gauge to indicate chamber vacuum;
A steel vacuum tank and pump assembly equipped with a pressure controller
and pipe connections;
A rubber pressure/vacuum hose with fittings and connections;
A bucket and wide brush, mop or spray assembly;
A soapy solution.
The following procedures shall be followed:
Energize the vacuum pump and reduce the tank pressure to approximately 5 psi
(10 inches of Hg.);
Wet a strip of geomembrane approximately 12 inches by 48 inches (0.3 m by
1.2 m) with the soapy solution;
Place the box over the wetted area;
Close the bleed valve and open the vacuum valve;
Ensure that a leak tight seal is created;
For a period of approximately 5 to 10 seconds, examine the geomembrane
through the viewing window for the presence of soap bubbles;
If no bubble appears after 10 to 15 seconds, close the vacuum valve and open
the bleed valve, move the box over the next adjoining area with a minimum
3 inches (75 mm) overlap, and repeat the process;
All areas where soap bubbles appear shall be marked and repaired in accordance
with Section 3.4;
Vacuum tested seams are recorded on Daily Progress Reports.
10
3.3.7.3 Pressure Test Specifications for Dual Track Hot Wedge
Welds:
Test Pressure (after 5 min) PSI Maximum Pressure
Sheet Thickness Min. Max. Drop Allowed
30 mil 24 30 3 PSI
40 mil 24 30 3 PSI
60 mil 27 30 3 PSI
80 mil 27 30 3 PSI
100 mil & thicker 30 32 3 PSI
3.3.7.4 Air Pressure Testing (for Double Fusion Seam only)
The equipment shall be comprised of the following:
An air pump (manual or motor driven) equipped with pressure gauge capable of
generating and sustaining a pressure between 25 and 30 psi (160 and 200 kPa);
A rubber hose with fittings and connections; and
A sharp hollow needle, or other approved pressure feed device.
The following procedures shall be followed:
Seal both ends of the seam to be tested;
Insert needle or other approved pressure feed device into the tunnel created by
the fusion weld;
Energize the air pump to a pressure between 25 and 30 psi (160 and 200 kPa),
close valve, and sustain pressure for approximately five (5) minutes;
If loss of pressure exceeds above listed valves, or does not stabilize, locate
faulty area and repair in accordance with Section 3.4;
Remove needle or other approved pressure feed device and seal; and
Pressure tested seams are recorded on Daily Progress Reports.
3.3.8 Destructive Testing
3.3.8.1 Concept
Destructive seam tests shall be performed at random selected tocations. The
purpose of these tests is to check that welds are fully integrated with each other
and to evaluate seam strength. Seam strength testing shall be done as the
seaming work progresses, not at the completion of all field seaming.
11
3.3,8.2 Location and Frequency
The owner and/or owner's representative shall select locations where seam
samples will be cut, These locations shall be established as follows:
A frequency shall be agreed upon by CU and the Project Manager at the
Resolution and/or Pre -Construction Meeting. Unless otherwise specified,
destructive samples should be pulled at intervals of 1 sample for every 500 linear
feet of weld.
The seaming technician shall not be informed in advance of the locations where
the seam samples will be taken,
3.3.8.3 Sampling Procedure
Samples shall be cut by CU as the seaming progresses in order to have test
results before the geomembrane is covered by another material. CLI shall:
Cut samples;
Assign a number to each sample, which is to be based upon seam and sample
number and mark it accordingly;
Record sample location on daily report; and
All holes in the geomembrane resulting from destructive seam sampling shall be
immediately repaired in accordance with repair procedures described in Section
3.4 The continuity of the new seams in the repaired area shall be tested
according to Section 3.3.7.
3.3.8.4 Size of Samples
At a given sampling location, two types of samples shall be taken by the
Installer.
First, two sample coupons for field testing should be taken. Each of these
sample coupons shall be 1 inch (0.25 mm) wide by 12 inches (0.3 m) long with
the seam centered perpendicular to the length. The distance between these
two samples shall be 42 inches.
If both sample coupons pass the field test described in Section 3.3.8.5, a sample
shall be cut between the two coupons. This sample shall be cut into three parts
and distributed as follows:
One portion for the Installer (CLI) for testing, 18 inches X 12 inches;
One portion for Geosynthetic Quality Assurance Laboratory testing if applicable,
12 Inches X 12 inches(0.3 m X 0.3 m); and
One portion to the Owner for archive storage, 12 inches X 12 inches (0.3 m X
0.3 m).
Final determination of the sample sizes shall be made at the Pre -Construction
12
Meeting.
3.3.8.5 Field Testing
The two 1 inches (25 mm) wide strips, mentioned in Section 3.3.8.4, shall be
tested in the field for peel and shear and shall nOt fail in the seam. If any field
test sample falls to pass, then the procedures outlined in 3.3.8.7 shall be
followed.
Electric or hand tensiometer testing in the field is to be carried out. The
following procedure is followed: If the initial sample coupon test passes a film
tearing bond, the sample qualifies for further testing to obtain quantitive results.
If it fails, the seam should be repaired in accordance with Section 3.4.
Destructive Testing of Seams;
Destructive testing of seams is very important because it provides the only direct
evaluation of seam strength and bonding efficiency which indicates seam
durability.
Destructive testing involves two techniques: 1) shear testing, and 2) peel
testing. Shear testing applies a tensile stress from the top sheet through the
weld and into the bottom sheet. Peel testing, on the other hand, peels the top
sheet back against the overlapped edge of the bottom sheet in order to observe
how separation ccurs. The peel test indicates whether or not the sheets are
continuously and homogeneously connected through the seam.
Specification for Seam Strength
(Based on NSF 54 Standards)
Type of Material No. of Coupons
Peel Sheer
Peel
Extrusion
Minimum Values Required
(Pounds per inch of Width)
Peel Shear
Fusion Extrusion
Shear
Fusion
30 mil HDPE
2
1
35
49
63
63
40 mil HDPE
2
1
48
67
86
86
60 mil HDPE
2
1
70
98
126
126
80 mil HDPE
2
1_
92
115
166
166
100 mil HDPE
2
1
115
143
207
207
30 mil HDT
2
1
31
44
56
56
40 mil HDT
2
1
42
60
76
76
60 mil HDT
2
1
63
88
113
113
80 mil HDT
2
1
84
115
151
151
100 mil HDT
2
1
105
143
189
189
Standard testing procedure is as follows:
If there is a failure in either peel or shear, then five total coupons are tested. If
more than one coupon fails, then the sample fails. This is a modified ASTM
13
method. The ASTM methods that are used are D4437, D413 and D638 which
all can apply.
Reason for pass/fail criteria:
The FTB requirement is very important. With a fully integrated, continuous
connection through the seam, no weld bead/sheet or sheet/sheet interface
exists. Such an Interface might be separated by absorbed chemicals, causing
failure of the seam.
In addition to the FIB criterion, a minimum stress level is specified. This is
important in order to protect against legitimate tearing of a thin portion of
polymer in the weld (as might occur if the weld is off center).
The minimum stress levels are necessarily lower than tensile yield strengths of
the parent sheet because of the different configuration of the test specimens
during destructive testing. Bending moments come into play along with straight
tensile stresses, especially as the sheets are bent back in peel. These bending
moments depend on the shape of the welds, which vary even within the same
welding technique. The minimum stress values are based on the average
performance values of passed weld specimens tested in the laboratory.
3.3.8.6 Procedures for Destructive Test Failure
The following procedures shall apply whenever a sample fails a destructive test.
CLI has two options:
1) Reconstruct the seam between any two passed test locations; or
2) Trace the welding path to an intermediate location (10 feet maximum
from the point of the failed test in each direction) and take a small
sample coupon for an additional field test at each location. If these
additional samples pass the field test, then full samples are taken. If
these samples pass the tests, then the seam is reconstructed between
these locations. If either sample fails, then the process is repeated to
establish the zone in which the seam should be reconstructed.
All acceptable seams must be bounded by two locations from which
samples passing destructive tests have been taken.
CLI shall document all actions taken in conjunction with destructive
test failures; e.g., capping of failed seam area.
3.4 Defects and Reaairs
3.4.1 Identification
All seams and non -seam areas of the geomembrane shall be examined by CLI for
Identification of defects, holes, blisters, undispersed raw materials and any sign of
contamination by foreign matter.
3.4.1.1 Defective/damaged materials shall be Identified via a
deficiency report, either separately or on the Daily Report. Actions
taken to resolve or correct the problem will also be recorded on the
14
similar form.
3.4.1.2 Defects, holes, blisters, undispersed raw materials, signs
of contamination by foreign matter, unacceptable welds in
geomembranes and other unsatisfactory conditions will be identified
on the Daily Report form. The repair/corrective action to "fix" the
problem will also be recorded on a similar form.
3.4.2 Evaluation
Each suspect location, both in seam and non -seam areas, shall be non-destructively
tested using the methods described in Section 3.3.7 as appropriate. Each location which
fails the non-destructive testing shall be marked by CLI and repaired. Work shall not
proceed with any materials which will cover locations which have been repaired until
laboratory test results with passing values are available.
3.4.3 Repair Procedures
3.4.3.1 Geomembrane Repair Procedures
Any portion of the geomembrane failing a destructive or non-destructive test
shall be repaired. Several procedures exist for the repair of these areas. The
final decision as to the appropriate repair procedure shall be agreed upon
between the Project Manager and CLI. The procedures available include:
Patching - used to repair large holes, tears, and contamination by foreign matter;
Buffing and re -welding - used to repair small sections of extruded seams;
Spot welding or seaming - used to repair pinholes or other minor localized flaws;
Capping - used to repair large lengths of failed seams;
Topping - used to repair areas of inadequate seams which have an exposed
edge;
In addition, the following provisions shall be satisfied:
Surfaces of the geomembrane which are to be repaired shall be abraded no
more than one hour prior to the repair;
All surfaces must be clean and dry at the time of repair;
All seaming equipment used in repairing procedures must be approved;
The repair procedures, materials, and techniques shall be approved in advance
of the specific repair by the Project Manager and CLI.
Patches or caps shall extend at least 6 inches beyond the edge of the defect, and
all corners of patches shall be rounded with a radius of at least 3 inches.
3.4.3.2 Geomembrane Verification of Repairs
Each repair shall be non-destructively tested using the methods described in
15
Section 3.3.7 as appropriate. Repairs which pass the non-destructive test shall
be taken as an indication of an adequate repair. Failed tests indicate that the
repair shall be redone and retested until a passing test result is obtained.
3.5 Backfilling of Anchor Trench
The anchor trench, if any, shall be adequately drained by Owner/Earthwork Contractor.
to prevent ponding or otherwise softening the adjacent soils while the trench is open.
The anchor trench shall be backfilled by the Earthwork Contractor or as outlined in the
specifications and bid documents.
Since backfilling the anchor trench can affect material bridging at toe of slope,
consideration should be given to backfill the liner at its most contracted state; preferably
during the cool of the morning or extended period of overcast skies. Care shall be taken
when backfilling the trenches to prevent any damage to the geosynthetics.
3.6 Lining System Acceptance
The geosynthetic lining system shall be accepted when:
The installation of all materials are deployed and welded;
Verification of the adequacy of alt seams and repairs including associated testing is
complete.
3.7 Soils in Contact with the Geomembrane
Important points for quality assurance of soils in contact with the geomembranes
include:
A geotextile or other cushion approved by the designer may be installed between angular
aggregate and the geomembrane.
Equipment used for placing soil shall not be driven directly on the geomembrane.
A minimum thickness of 1 foot (0.3 m) of soil is recommended between a light dozer
(such as a CAT D-3 or wide track caterpillar D-6 or lighter) and the geomembrane.
In heavily trafficked areas such as access ramps, soil thickness should be at least
2to3feet(0.6-0.9m).
Soil/Earth Cover on TOD of Geomembrane:
Placement of soils, sand or other types of earth cover on top of the liner shall not
be performed until all destructive and non-destructive testing has been performed
and accepted.
Placement should be performed to minimize wrinkles. Equipment operators should
be briefed on method of placement and affects to thermal expansion and contraction
of the liner.
Material placed on top of the liner should be back -dumped on liner and, in order to
avoid the formation of wrinkles, efforts should be made to load the soil so that it
16
comes down on top of the liner rather than being pushed across the sheet. This is
done by 1) using a front-end loader to place soil ahead of spreading soil cover, and
2) spreading soil by building a mound at the edge of soil, then pushing soil up and
over the mound causing it to come down on the liner.
If a wrinkle forms, every effort should be made to walk the wrinkle out.
Minor folding over of wrinkles is acceptable providing an even transition occurs at
the tail of the wrinkle. If excessive stress points are created at the tail of the wrinkle, the
wrinkle should be cut out and repaired per Section 3.4.
TYPICAL RESIN PROPERTIES OF VIRGIN RESIN
Property Test Method UNIT HDPE Value
Density ASTM D1505 g/cc 0.935-0.941
Condition A
Melt Index ASTM D1238 g/10 min. 0.05. 0.30
(190°C/2.16 kg)
TYPICAL RESIN PROPERTIES OF COMPOUNDED RESIN
Property Test Method UNIT HDPE Value
Density ASTM D1505 g/cc 0.940 min.
Condition A
Melt Index ASTM D1238 g/10 min. 0.05 - 0.30
(190°C/2.16 kg)
Carbon Black Content ASTM D1603 % 2.0 - 3.0
Environmental Stress Crack ASTM D1693 Hrs. 1500
DETAILS OF HOT WEDGE WELDING SYSTEM
1. FML Preparation
A. Note that this document assumes that the proper FML has been brought to its
exact pian position for final installation and seaming.
B. The two FMLs to be joined must be properly positioned such that approximately
three inches of overlap exists.
C. If the overlap is insufficient, lift the FML up to allow air beneath it and "float" it
into proper position. Avoid dragging FML sheets, particularly when they are on
rough soil subgrades since scratches in the material can create various stress
17
points of different depths and orientations.
11 There can be no excessive undulations (waves) along the seams during the
seaming operation due to problems in slack adjustment. When this occurs, with
the upper sheet having more slack than the lower one, it often leads to the
undesirable formation of "fishmouths" which must be trimmed, laid flat, and
reseamed via a patch.
E. There generally will be excessive slack in the FMLs depending on the ambient
temperature, length of time the FML will be exposed, etc.
F. The sheets which are overlapped for seaming must be clean.
G. The sheets which are overlapped for seaming must be completely free of
moisture in the area of the seam. Air blowers are usually preferred over rags
because sufficient dry rags are usually not available to keep the FML dry enough
to be suitable for seaming.
H. No seaming is allowed during rain or snow, unless the seam Is covered with an
enclosure.
1. The soil surface beneath the FMLs cannot be saturated because the heat of
seaming will draw the water into the region to be joined. Ponded water on the
soil's surface beneath the FML is never allowed.
3, The soil beneath the FMLs cannot be frozen, for the heat of seaming will thaw
the frost allowing water to be drawn into the region to be joined. The seaming,
however, can be accomplished with rub sheets of FML directly under seam
edges.
K. Ambient temperatures for seaming should be above freezing (i.e., thirty-two
degrees Fahrenheit). However, seam welding temperatures below thirty-two
degrees Fahrenheit can be accomplished as stated in item L
L. For cold weather seaming, it may be advisable to preheat the sheets with a hot
air blower, to use a shield of some sort to prevent heat losses during seaming,
and to make numerous test welds in order to determine appropriate seaming
conditions (e.g., equipment temperatures should be set higher and seaming
rates slowed down during cold weather seaming).
II. Equipment Preparation
A. A working and properly functioning small electric generator must be available
within close proximity of the seaming region and with adequate extension cords
to complete the entire seam. The generator must be rubber tired, or placed on
a smooth plate such that it is completely stable so that no damage can occur to
the FML. Fuel (gasoline or diesel) for the generator must be stored off the FML.
B. A hot wedge seaming device is a completely self-contained system known as a
"hot shoe".
C. As the hot wedge method is one of melting the opposing surfaces of the two
18
FMLs to be joined, no grinding of sheets is necessary or allowed.
D. Tacking of the FML sheets as done in extrudate fillet seaming is not needed.
E. The hot wedge itself, or "anvil", should be inspected to see that it is uniform and
reasonably tapered. Various types are currently available. Some are smooth
surfaced while others have patterned ridges in the direction of the seam. The
taper dimensions vary according to different types of machines. The major point
for inspection is that no sharp edges should exist where FML sheet surfaces must
pass.
F. Knurled rollers for applying pressure on the sheets and driving the device follow
the wedge. They should be inspected for sharp surfaces.
G. If a dual, or split, hot wedge seam is being made, the recessed space for the air
track should be examined.
H. As the FML sheet materials pass through the machine, they must come in
contact with the wedge in order to heat the material properly. Hot wedge
welding machines are equipped with pressure shoes which assure contact
between the FML sheet and the wedge as the material passes through the
machine. Once the welding machine has been set up for a particular FML
thickness, further field adjustments are not required. The wedge has an
adjustment that is actually a stopping device to keep the "hot shoe", or anvil
from being pulled into the nip/drive rollers, especially when material is not going
through the machine. The drive, or wedge units, must be disengaged before the
material runs completely out of the machine. Serious damage will occur to the
FML sheets if the wedge gets pulled through the nip/drive rollers.
I. The front part of the seaming device should be inspected for sharp corners and
irregular details which may damage the FMLs.
]. Temperature controllers on the wedge device should be checked periodically.
M. Actual Seaming Process
A. The hot wedge system is properly positioned for the making of a dual (split
seam).
B. The principle of the hot wedge is that both surfaces to be fused come into
intimate contact with the hot wedge, or anvil. The wedge lifts up both layers
of FML off the subgrade and fusion is brought about by compressing the two
melted surfaces together, causing an intermingling of the polymers at a pressure
of approximately one hundred pounds per square inch. The hot anvil itself
reduces the surface tension of the viscous polymer sheets and acts as a
scraper/mixer, followed closely by the nip roller which squeezes the two FMLs
together.
C. Temperature setting will very according to the FML thickness being installed. In
general, the sheet surface temperature as it passes through the nip/drive rollers
is about thirty degrees Fahrenheit (fifteen degrees Celsius) lower than the wedge
itself.
19
D. Ambient factors such as clouds, moisture, and hot sun will require the
temperature setting of the wedge to vary. A test strip of at least five feet in
length should be run before welding begins, which will enable the operator to
find the proper settings for the particular conditions that day. See Article 3.3.5.
Depending upon the records to be kept, one might record a number of different
temperatures; for example, the temperature of the hot anvil, the temperature of
the sheet after seaming, the temperature of the sheet away from the seaming
area and the ambient temperature.
E. Power for the drive motor should be off when positioning the machine to make a
seam. Manually place the machine into the overlapped sheet of material. The
sheets should be guided between the idlers and the wedge, and into the
drive/nip rollers. This procedure Is only possible when starting with two new
sheets. When starting a weld in the middle of two sheets, the material must be
loaded from the sides. The machine is to be picked up a few Inches, loading the
bottom sheet first and then the top sheet. As soon as the nip rollers are
engaged and the wedge is in position, the power to the drive motor should be
turned on. Once the sheets are between the nip rollers, they shall be engaged
immediately; otherwise, a melt -through will occur within a few seconds. The hot
wedge should be moved into position and locked.
F. It is necessary that the operator keep constant visual contact with the
temperature controls, as well as the completed seam coming out of the machine.
Occasional adjustments of temperature will be necessary to maintain a
consistent weld. Visual inspection and constant hand testing by the peel method
or another method as cited in Article 3.3.8.2 are also recommended.
G. On some soils, the wedge tends to "bulldoze" into the ground as it travels. This
causes soil to enter the weld making the seam weak and unacceptable. To
overcome this, it is recommended that the operator take some of the weight off
the front of the machine by lifting it slightly. Alternatively, some type of base for
the machine to travel on could be provided. Strips of geotextile or
geomembrane have proven effective to prevent this bulldozing effect.
IV. After Seaming
A. A smooth Insulating plate or heat insulating fabric is to be placed beneath the
hot welding apparatus after usage.
B. A slight amount of "squeeze -out" or "flashing" is a good indicator that the proper
temperatures were achieved. It signifies a proper seam in that some of the
melted polymer was laterally extruded out of the seam zone. The pressure
should be decreased until only a minimal amount of hot melt is squeezing out.
C. For FMLs of 40 mil thickness and Tess, a long, low wave -length pattern in one
direction of the seam on Its top surface is indicative of a proper weld. If the
wave peaks become too close together, the machine speed should be increased
until a satisfactory pattern is present. The absence of this wavelength pattern
indicates that the machine speed should be decreased. FMLs of 40 mil in
thickness and less require considerable visual inspection. There will be no wavy
pattern for FMLs greater than 40 mil in thickness due to the inherent stiffness of
the thicker material.
20
D. Nip/drive roller marks will always show on the surface. Their depth, however,
should be visually observable, but just barely evident to the touch.
E. The hot wedge device has only a few adjustments that can be made, but it is
very important that they be checked daily. Cleaning of machine should be done
at least daily.
General:
CLI's unique automatic seaming machine creates two distinct seams. These two seams are
separated by a void or air space. This seam design is intentional for two primary reasons. First,
it allows a very positive test for leak integrity, and second, the double weld seam offers both a
primary and a secondary seal for the seam.
Test Procedure:
1. Seal one end of the seam by applying heat to the end of the seam, via hand leister, until
"flow temperature" is achieved. At all times before heat sealing the end of the seam, the
operator should insure that the void or air channel is free of obstruction. This obtained
by allowing air pressure to travel freely to the opposite end of the pressure gauge/needle
assembly.
2. Clamp off end using hand vise gripper.
3. A pressure gauge/needle assembly is inserted into void or air chamber.
4. Air pressure fs then applied into the air chamber with the use of an air pump per the
following schedule:
Material
Initial Pressure Schedule
Field Testing
Minimum PSI Maximum PSI
30 mil 24 30
40 mil 24 _ 30
60 mil 27 30
80 mil 27 30
100 mil 30 32
Above 100 mil - Colorado Lining supplies a thicker mil HDPE membrane on special order.
Seaming and field testing procedures are available upon request by the client.
5. After initial start of air pressure, the air should be allowed to reach ambient liner
temperature.
6. Pressure test FML seam according to the initial pressure test schedule. Hold test for five
minutes. If no pressure drop is greater than the maximum allowable pressure drop, the
seam is judged leak free.
21
Maximum Allowable Pressure Drop
Material Field Test (after five minutes)
3Q mil
40 mil
60 mil
80 mil
100 mil
3 PSI
3 PSI
3 PSI
3 PSI
3 PSI
FIELD SEAM FAILURE
Should failure occur through excessive leak down over the scheduled time period, check both
ends of seam to insure proper seal and retest. Should failure reoccur, check the top fusion seam
by applying a constant flow of air pressure to void or air channel. Mix a strong solution of liquid
detergent and water and apply an ample amount to the top fusion weld. Any failure or leak will
be indicated by continuous bubbles appearing.
If no failure appears in the top fusion seam area, check systematically by isolating random
sections of the seam. This should be accomplished in one hundred and fifty linear foot sections
of seam. Then retest each section by pressure testing until the leak is located. Repair failed
seam area by extrusion welding the outside edge of the top fusion weld between areas of failure.
Then vacuum test repair seam area. All repairs in accordance with Quality Assurance/Quality
Control Manual.
PEEL TEST FOR HOT WEDGE SEAM WELD
This test is the most severe test that a seam can be subjected to. The peel test is the greatest
proof that a seam will have the strength to last the life of the flexible membrane liner (FML). The
mechanical procedures of the peel test are as follows:
Procedure:
1. Seam sample cut approximately one inch wide by approximately six inches long.
2. Only the inner weld track is peeled apart in this destructive test. The outer track
(directly at sheet edge) Is for the purpose of air pressure testing capabilities.
3. Clamp bottom tabs Into the testing machine (Field Tensiometer or Lab Instron), turn on
machine and pull the seam.
4. All testing of destructive samples of fusion seam will be in accordance with ASTM 0413
and ASTM 0638.
22
DETAILS OF EXTRUSION WELDING SYSTEM
I. Introduction
The Hot Wedge Welding System is the primary seaming system for FML installation, and
the Extrusion Welding System is utilized for repairs and detail work. The Extrusion
Welding System produces a seam quality equal to the hot wedge weld and has the
advantage that -all welds are applied on top of the FML which allows its use at "T"
Intersections and in irregular seam areas such as pipe boots.
II. FML Preparation
FML preparation is the same as described for the hot wedge weld.
III. Equipment Preparation
A. A working and properly functioning small electric generator must be available
within close proximity of the seaming region and with adequate extension cords
to complete the entire seam. The generator must be rubber tired, or placed on
a smooth plate such that it is completely stable so that no damage can occur to
the FML. Fuel (gasoline or diesel) for the generator must be stored off the FML.
B. The extrusion welder is a completely self-contained system which requires no
adjustments after it has been initially set up for a particular FML thickness.
C. An initial inspection of the extrusion welder should be made before the first heat
up to confirm that the electrical cords, insulation and covers are in good
condition and that the welding nozzle is correct for the FML to be seamed.
D. The welding machine should be connected to a proper power supply and heated
to the correct welding temperature for the FML to be seamed.
E. After the unit has reached correct operating temperature, clean, dry welding rod
should be inserted and the unit operated for several minutes to -confirm that
temperature controllers are operating properly and that the welding rod feed
system and rotating tips are operating properly.
F. The flow of extrudate from the test run will force the rotating tips to the
outermost position and these can now be checked for proper setting with depth
calipers.
G. The teflon shoes should be checked for excessive wear and replaced if
necessary. The teflon shoes must be trimmed for proper control of the weld
bead configuration.
IV. Actual. Seaming Process
A. FML material to be extrusion welded must have surface oxidation removed by
lightly grinding the weld surface with a 60 or 80 girt disc. The grinding is
performed parallel to the seam and controlled such that grinding marks do not
extend more than 025 inches outside the area of the weld bead. Grinding
should precede the actual welding as closely as possible but In no case should
23
grinding precede welding by more than one hour. Sixty mil or thicker liners
should have the edge of the top sheet beveled by grinding to approximately
a 45°?angle.
B. The FML to be extrusion welded must be temporarily bonded to hold the material
in place until the extrusion weld bead cools and attains full strength. This is
normally accomplished by performing an automatic or hand hot air tack weld.
C. The extrusion welder should be purged of all degraded plastics prior to the start
of seaming.
D. The welding operation should be observed to assure that the weld bead is
centered over the edge of the top FML sheet and that weld bead appearance is
smooth and uniform.
E. All extrusion welds should be non-destructively tested by vacuum testing as
described in the QC Manual. Areas which cannot be non-destructively tested
should be visually inspected.
F. Destructive tests can be conducted when seam lengths are adequate.
DEFECT (LEAK) TESTING OF SYNTHETIC LINERS
Forward:
Environmentalists and activists have long used the phrase "ALL LINERS LEAK" as their battle cry
and until now, the claim had some validity. The most carefully manufactured synthetic liners can
be accidentally damaged. Desiccation, consolidation, and chemical attack will increase the
permeability of day or soil liners. Available insitu defect or leak testing systems are costly and
have limitations. A brief overview of the various systems available and their limitations follows:
Smoke & Detectable Gas
Smoke and detectable gas systems are similar in that a specific area is isolated by sandbagging
or weighting the perimeter and the detection media (smoke or gas) is injected under the liner at
a slight positive pressure. The area is then surveyed, either visually or with instrumentation, to
find defects where the media is venting through the liner. These systems are costly, time
consuming, and heavily dependent on the skill and diligence of the survey personnel. The
minimum hole size the detection media will pass through and whether the detection media has
been able to reach the entire undersurface of the liner, particularly when the liner is in intimate
contact with a subgrade such as compacted day, are critical for a quality inspection.
Electric Leak. Survey
Electric leak surveys have been the standard leak detection tool for some time. This test requires
an electrically conductive layer below and above the liner. The lower conductive layer is typically
the soil and the upper conductive layer is water. A cathode ground is established and an anode
Is placed in the water. As the water leaks through a defect, a current is established. A hand-
held probe is then traversed through the water and the current traced to the defect.
The typical procedure is to flood the test area to a depth of approximately 6", probe, then locate
and mark the defects, drain the area and perform repairs.
24
Depending on bottom configuration, water depth can be substantial in some areas requiring a
search by boat rather than wading. The fill and drain process is both time consuming and
expensive, particularly if adequate water supplies are not available in the construction area. The
survey itself is expensive and relative slow and requires skilled operators to find the smaller
defects.
Although the system can theoretically detect holes as small as 0.25 mm, the practical limit seems
to be about 1 mm or larger. Small holes in the same vicinity as large holes can be masked by
the larger hole. A second survey is often conducted to insure that ail defects have been located
and repaired.
Should a wrinkle lift the liner off the subgrade, the electrical contact can be lost unless large
quantities of fluid leak in and re-establish the circuit. Also, due to the low voltage (12 to 110
volts), fluid must penetrate the defect and establish electrical conductivity between the upper
and lower conductive mediums.
Leak detection systems in use today have been quite useful. However, the cost and time
required to conduct the tests have limited their use to a few of the most critical liner projects.
The CLI system, which is described below, overcomes these disadvantages and adds additional
features which are simply not practical with existing systems.
A LEAK DETECTION SYSTEM USING SPARK TESTABLE GEOMEMBRANE
"Holiday" or "spark" testers were originally developed to detect defects on "Holidays" in pipe
coatings. For a number of years, they have been used to detect pinholes in extrusion weld beads
ori liner seams. The procedure is simply a matter of imbedding a thin copper wire in an extrusion
weld and applying a high potential (12,000 to 20,000 volts) between the wire and a brass brush.
As the brush is passed over the weld, any pinholes cause a spark which can be seen visually, and
an alarm is sounded.
CLI now makes it possible to use this simple technology to test every square inch of an installed
liner in a dry state. The co -extrusion technology which made possible textured liner and multi-
colored layered liner is used to add a thin (approximately 5 mil) electrically conductive layer to
the standard liners, using electrically conductive carbon black. The liner is Installed with the
electrically conductive layer on the bottom and standard non-conductive layers on the top. The
spark test equipment may be connected directly to the conductive layer by the use of clamps or
may reach the conductive layer through an earth ground. A wide (2-6') brass brush is passed
over the liner surface and, as in a seam test, any pinhole will cause a spark which triggers an
alarm. The test equipment includes a marking system to define the edge of each pass of the
brush so that each pass of the brush should overlap the previous pass. The equipment provides
output signals for an audible alarm. This signal is used to mark the location of the defect for
repair, and provide a strip chart record of the test.
The system is simple, yet It provides a multitude of advantages.
1. Current flow is minuscule; therefore, the system is safe for personnel and no heat is
generated when a spark occurs.
2. The extremely high voltage eliminates the need for a conductive fluid to penetrate the
defect and provide a current path. Even the most minute defects can be located.
3. Most welds are automatically spark tested when the liner is tested. (This comes as a
25
bonus to the normal non-destructive and destructive weld testing.
4. Since the conductive layer is an Integral part of the liner, there are no areas where the
electrical potential does not exist,
5. Primary liners can be tested as easily as secondary or ground contact liners.
6. Complex configurations such as pipe boots can be completely tested.
7. Water puddles or dirt on the liner do not affect the test. In the case of a water puddle,
the entire puddle will become charged and will spark, To locate the leak the water is
removed and the area re -tested.
8. No water pumping is required.
9. Repairs can be re -tested quickly and easily.
10. The test is fast. One walking operator can best 1/2 acre per hour and for large areas, a
vehicular mounted test device could easily cover 1-1/2 to 2 acres per hour.
11. Operator skill requirements are minimal.
12. Chemical resistance is completely retained as are all other properties. In the case of
exposed liners in ponds and similar applications, the liner can be re -tested at any time in
the future,
13. One common cause of defects in double lined systems is damage to the secondary liner
caused when destructive samples are cut from the primary liner. Now this area can be
tested to assure that no inadvertent cuts have been made in the secondary liner, and the
primary liner patch can be tested as well.
The CLI system provides a fast, cost effective method of 100% inspection for synthetic liners,
especially when combined with a co -extruded, white upper layer for improved visual inspection
and reflection of radiant heat. A new state-of-the-art plateau has been reached in synthetic
liners. Since the co -extruded layers do not affect basic sheet properties and provide enhanced -
value, re -permitting or variances are unlikely to be required for previously permitted projects.
CONDUCTIVE LINER
TYPICAL QUESTIONS
1. Q: Is the system safe?
A: Yes. Although the test voltage fs very high (12,000 to 35,000 volts), virtually no
current (amps) is involved. This is similar to spark plugs on an automobile, and
while one can receive an uncomfortable shock, there is no physical danger.
Shock can be eliminated by the use of rubber boots and gloves.
2. Q: Does the spark damage the liner?
A: No. Since virtually no current flows, no heat is generated.
3. Q: Does the conductive coating change sheet properties or weld strengths?
26
A: No. Lab testing shows no change in liner properties or weld strengths.
4. Q: Does dirt or water on the liner invalidate the test?
A: No. However, if a hole is located in a water puddle, the entire puddle will
become charged and will spark. It will be necessary to remove the water and
retest to pinpoint the hole.
5. Q: Can the test be conducted under water or over fill materials such as dirt, sand or
concrete?
A: No. As explained in (4) above, the entire water body will become charged and
indicate that a hole exists but not locate it. The same may happen with wet fills
of day or sand. Dry sand or concrete would be unlikely to react.
6. Q: Can an exposed liner such as a pond be retested at future dates?
A: Yes. When filled, a simple resistance test will indicate a hole, and the pond can
then be drained and retested to locate the hole. The conductive layer is a
permanent part of the liner.
7. Q: Could existing liners or new liners without the conductive layer be tested?
A: If a liner without a conductive coating were in intimate contact with a conductive
medium such as the earth, the test could be used. However, if a defect were
present in a wrinkle or over geonet or any location where intimate contact did
not exist, then no spark would occur and the test would be invalid.
The key is intimate contact between the liner and the conductive media. If foils
or water films are used as the conductive media, intimate contact could not be
guaranteed,' and the test would be invalid.
8. Q: How can electrical continuity between liner panels be assured?
A: With the Colorado Lining International system each panel is energized as it is
tested. If necessary, the panels can be connected by welding a "Jumper" of
conductive extrusion weld from panel to panel or by placing a scrap of
conductive liner, with conductive side up, between panels.
9. Q: How long will it take to conduct this test?
A: Test rates of 1 acre per hour or more seem reasonable.
10. Q: Is a high level of operator skill required?
A: No.
11. Q: How can one be sure which is the conductive side of remnants and odd pieces?
A: A simple resistance or continuity test will identify the conductive side.
12. Q: Will induced ground currents in areas such as large power plants affect the test
as they do with conventional electric leak surveys?
A: No.
13. Q: Must defects exceed a minimum size, to be located by the test as Is common
with electric leak surveys?
A: No. Common electric leak surveys depend on establishing current flow through a
defect at low voltage. The very high voltages used in this system will penetrate
the smallest defect.
27
14. Q: Is this system designed to replace normal QC procedures such as non-destructive
and destructive weld testing?
A: No. This test is designed to serve as an additional procedure to further raise the
confidence level in a liner system.
15. Q: What other benefits are available with the system?
A: 1.) Areas such as pipe boots and complex configurations which are difficult,
if not impossible, to test non-destructively, can be tested with this
system.
2.) When destructive samples are taken from a primary liner, it is not
uncommon to find the secondary liner was damaged in the process.
This system permits an immediate retest of the secondary liner.
3.) Patches and repairs can be immediately retested.
4.) The conductive layer can be used for Cathodic Protection under steel
tanks.
16. Q: Competitive bidding is required on my project. If defect testing is specified, will
this not eliminate competitive bids?
A: No. The well-known electric leak survey is a valid test procedure and is available
to all bidders as a defect test procedure. CLI believes that our system is
superior, but alternate methods are available.
17. Q: Will re -permitting or variances be required to use conductive liner on projects
previously permitted?
A: This will vary with the different permitting agencies and regulatory bodies.
However, since the basic liner properties and specification do not change and the
ability to test for defects prior to use represent enhanced value in the liner, it is
likely that regulators will look favorably on the use of this material.
SPARK TESTING CONDUCTIVE LINER
Spark (or Holiday) testing was originally developed to inspect coatings on steel pipe. In this
application, a high electrical potential (voltage) of negative polarity (ground) is applied to the
metal pipe. A wand or brush of opposite positive polarity is passed over the coating and any
voids in the costing establish electric continuity and allow a spark to pass between the metal pipe
and the wand.
This same simple technology is used to test synthetic liners for defects. Synthetic liners made of
plastic materials such as high density polyethylene are not normally electrically conductive just as
in the coatings on metal pipes. In order to spark test a synthetic liner, an electrically conductive
material must be in intimate contact with the liner.
Intimate contact is critical for a valid test because air is also a good electrical insulator. Typicallv,
1,700 to 2,000 volts per millimeter are required to establish an electrical arc. Therefore, to
bridge a 1 -inch air gap, a 35,000 to 50,000 volt potential would be required. To bridge a 4 -inch
air gap, 140,000 to 200,000 volts would be required, which is clearly not a potential level to be
handled by anyone who is not an electrical expert.
The necessary conductive layer could be the earth itself; however, wrinkles, bridged areas or any
condition separating the liner and the earth would invalidate the test. Metal foils could be glued
28
to the liner; however, the cost would be prohibitive and fragile fails could easily be damaged
during installation. Any stray ground currents in the soil as is common around high voltage
transmission lines can cause galvanic corrosion in metal foils.
CLI has solved this problem by co -extruding a thin layer (approximately 5 mil) of liner material
with a special electrically conductive carbon black on one side of the basic liner. The special
carbon black makes this layer electrically conductive and at the same time retains the corrosion
resistance and other desirable properties of the base liner. Since the conductive layer is co -
extruded, it is an integral part of the base liner and cannot be torn or damaged such that it fails
to perform its basic duty.
The high voltage potential (15,000 to 35,000 volts) source can be connected to the liner in one of
three ways:
1. Direct connection to the conductive layer;
2. Through an Earth Ground:
If any part of the conductive layer touches earth, the entire conductive layer Is
energized,
Both methods above require an electrical lead from the power supply to the wand;
therefore, in a large lined area, thousands of liner feet of cable would be required which
would in itself be cumbersome.
Fortunately, it is possible to take advantage of the electrical property of capacitance and
eliminate the long electrical lines. A capacitor is an electrical device in which two
electrically conductive materials are separated by a dielectric (or non-conductive)
material.
A capacitor will store an electrical charge in each conductive material when attached to a
power source. We can take advantage of the "Capacitance effect" by placing an
electrically conductive rubber pad on top of the liner and inducing a potential in the
conductive layer of the liner; and
3.) Through Electrical Capacitance Effect:
The rubber pad can move with the test unit and energizes the conductive layer through
the "Capacitance effect".
Once the conductive liner layer has been energized by one of the methods above, the wand is
passed over the upper surface of the liner. Any defect or pinhole which penetrates the liner to
the conductive layer will allow a spark to pass through the liner to the wand. This spark is clearly
visible and triggers an audible alarm and can trigger a strip chart for a record of the number of
defects located in a test.
29
ASTM
Angle of Friction
Bonded Seam Strength
Breaking Strength
Carbon Black
Crystallization, Polymer
Density
Dimensional Change
Direct Shear Test
Dispersion
Elongation at Break
Elongation, Percent
Elongation at Yield
Environmental
Stress Crack
Extrusion Welded Seams
GEOSYNTHETICS TERMINOLOGY
American Society for Testing & Materials. (215) 299-5400
Angle of friction between solid bodies. (Degree) Angle whose tangent is the
ratio between the maximum value of shear stress that resists slippage between
two solid bodies at respect to each other, and the normal stress across the
contact surfaces.
Strength of a seam of liner material measured either in shear or peel modes.
Strength of the seam is reported either in absolute units: e.g., pounds per inch of
width; or as a percent of the strength of the sheeting.
Tensile force to break measured in lbs.(Newtons) on a supported/unsupported
membrane.
Additive for elastomeric and plastic sheeting or film for ultraviolet absorption
and pigmentation. Typically 1% to 2% of the base product in the case of
thermoplastics and crystalline thermoplastics, and 10% to 45% in the case of
elastomers and thermoplastic elastomers; imparts a black color to the compound
which retards aging by ultraviolet light from the sun and increases the stiffness
of eiastomeric compounds.
Arrangement of previously disordered polymer segments of repeating patterns
into geometric symmetry.
The mass per unit volume, (ML"3)?kg/m3[4]
A generic term for changes in length or width of a fabric specimen subjected to
a specified condition.
A shear test in which soil or rock under a n applied normal load is stressed to
failure by moving one section of the sample/sample container (shear box)
relative to the other section.
1.) A distribution of finely divided particles in a medium; for example a
coiloidal suspension of a substance.
2.) A qualitative estimation of the separation and uniform distribution of
fibers, typically in a water suspension for wet forming.
The extension of a uniform section of a specimen at rupture expressed as percent
of the original length.
For geosynthetics, the increase in a length of a specimen expressed as a
percentage of the original guage length, i.e., engineering strain.
The extension of a uniform section of specimen at yield expressed as percent of
the origjnal length.
The development of cracks in a material that is subjected to stress or strain in the
presence of specific chemicals.
A bond between the two flexible membrane sheets is achieved by heat extruding
the hot parent material between or over the overlap areas (followed by applied
30
pressure if between the sheets.)
Film Tear Bond (FTB) Failure of one of the parts of a peel or ply adhesion test specimen by tearing,
instead of separating from the other part of the specimen at the manufactured or
formed interface.
FTMS
Federal Test Method Standard. (202) 783-3238
High Density Polyethylene
(HDPE)
Melting Point
Modulus of Elasticity
Moisture Content
Nets
NSF
Ozone Resistance
Puncture Resistance
Seam Peel Strength
Seam Shear Strength
Tear Strength
A polymer prepared by low-pressure polymerization of ethylene as the principal
monomer.
The temperature at which the solid and liquid states of a substance are in
equilibrium; generally, the temperature at which a substance changes from a
solid to a liquid.
The ratio of stress to strain for a material under given Ioading conditions;
numerically equal to the slope of the tangent or the secant of a stress -strain
curve. The use of the term Modulus of Elasticity is recommended for materials
that deform in accordance with Hooke's law; the therm Modulus of Deformation
for materials that deform otherwise.
The percentage by weight of water contained in the pore space of a rock or soil
with respect to the weight of the solid material (ISRM).
Coarse strand, typically 1 to 5 mm (3164 to 3/16 in.) in diameter, obtained by
extrusion, are used to make nets. They consist of two sets of coarse parallel
extruded strands intersecting with a constant angle (generally between 60° to
90°).
National Sanitation Foundation Standard. (313) 769-8010
It is primarily a test for rubber deterioration and is based on a qualitative
assessment of surface cracking of the material after exposure.
Extent to which a material is able to withstand the action of a sharp object
without perforation. Examples of a test of the property are Federal Test Method
Standard No. 10113, methods 2031 or 2065.
A representative specimen is taken across the seam and placed in a tensile
testing machine. For the peel test, one end and the closest end of the adjacent
piece are gripped, placing the seamed portion between them to be in a tensile
mode. The resistance to peel is measured.
A representative specimen i taken acrois the seam and placed in a tensile testing
machine. For the shear test, the two separate pieces of geomembrane are pulled
apart, placing the joined or seamed portion in shear. The resistance to shear is
measured.
The maximum force required to tear a specified specimen, the force acting
substantially parallel to the major axis of the test specimen. Measured in both
initiated an uninitiated models. Obtained value is dependent on specimen
geometry, rate of extension, and type of fabric reinforcement. Values are
reported in stress, e.g., pounds, or stress per unit of thickness, e.g., pounds
per inch.
31
Tensile Strength
Thermal Stability
Thickness
Transmissivity
Water Absorption
Water Vapor
Transmission
The maximum tensile stress per unit of original cross sectional area applied
during stretching of a specimen to break; units: SI -Mega or kilopascal,
customary: lb, per sq. in.
The ability of fibers and yarns to resist degradation at extreme temperatures.
The normal distance between two surfaces of a geosynthetic. Note: Thickness
is usually determined as the distance between an anvil, or base, and a presser
foot used to apply a specified compressive stress.
For a geotextile, the volumetric flow rate per unit thickness under laminar flow
conditions, in the in -plane direction of the fabric.
The increase in weight of a test specimen after immersion in water under
specified conditions of time and temperature, expressed as a percentage of its
dry weight.
Water vapor flow normal to two parallel surfaces of a material, through a unit
area, under the conditions of a specified test such as ASTM E96.
32
HDPE REFERENCE LIST
Material Project Name
City
State Contract Value- Material Mil Quantity/SF
HDPE
Action Lining Houston TX $0.00 40 29,250
Admiral Baker Golf Course San Diego CA $138,141.01 30 406,980
Albany Storm Water Pond Albany GA $49,88239 40 142,835
Almond Beach Village Golf Course St. James - Barbados $0.00 40 87,750
Alter Monofill Devenport IA $0.00 60 210,000
Altus AFB Fire Training Facility Altus OK $51,311.08 60 94,500
Ambrosia Lakes UMTRA Project Ambrosia Lakes NM $0.00 40 650,000
Ambrosia UMTRA Ambrosia NM $0.00 40 155,000
Amcor Precast Littleton CO $0.00 30 121,702
American Soda Upper Plant Parachute CO $33,873.00 60 66,420
American Soda Yankee Gulch Parachute CO $0.00 60 8I7,888
American Soda Yankee Gulch Parachute CO $534,155.56 60 1,008,000
Amoco Casper Former Refinery Barrier Casper WY $0.00 60 17,010
Amoco Casper Fortner Refinery Barrier Wall Casper WY $9,178.50 60 17,010
Apache GoId Casino Globe AZ $0.00 40 138,937
Arrowhead Country Club Golf Course Rapid City SD $0.00 60 19,800
Austin Golf Club Austin TX $87,65L03 40 208,406
AWS Remediation Denver CO $0.00 30 27,900
Badger Army Baraboo WI $229,005.40 40 286,615
Bahama Reef Golf Course Freeport, Bahamas $32,697.00 30 94,500
• Balco Disposal Facility Sydney - MT $0.00 40 43,875
Wednesday, October 20, 2004 Page 1 of 11
Material Project Name City State Contract Value Material Mil Quantity/SF
Barksdale AFB
Barrett Resources Evaporation Pond Phase 1
Barrett Resources Evaporation Pond Phase 1
Barrett Resources Evaporation Pond Phase 2
Barrett Resources Evaporation Pond Phase 2
Baseline Golf Course
Berthod Sludge Handling Facility WWTP
BFI Landfill
Big Island Country Club
BNSF Guernsey
BNSF Wastewater & Stormwater Sys Improvements
Boise Cascade
Boodle Mill Site
Bos Farms Site #4 Pond Liner
Boss Dairy
Brine Tanks - Penford.Products Company
Broad Acre Landfill
Broadacre Landfill
Burlington Northern Fueling Facility
Bussman Wastewater Lagoon
Cactus Dairy
Calamus Fish Hatchery
Calumet Florida Ink
Canyon Springs Golf Course
Canyon Springs Golf Course
Wednesday, October 20, 2004
Shreveport
Parachute
Parachute
Parachute
Parachute
Belleview
Berthod
Commerce City
Kailua Kona
Guernsey
Fridley
International Falls
Central City
Fair Oaks
Fair Oaks
Idaho Fails
Pueblo
Pueblo
Guernsey
Grey Eagle
Ft. Morgan
Burwell
Immokalee
San Antonio
San Antonio
LA
CO
CO
CO
CO
FL
CO
CO
HI
WY
MN
MN
CO
IN
IN
ID
CO
CO
WY
MN
CO
NE
FL
TX
TX
$0.00
$173,280.00
$173,280.00
$173,280.00
$173,280.00
$0.00
$4,205.00
$0.00
$0.00
$0.00
$40,981.46
$0.00
$0.00
$144,351.50
$40,649.86
$8,395.80
$0.00
$104,806.80
$0.00
$31,860.00
$41,940.56
$0.00
$0.00
$0.00
$0.00
80
60
40
40
60
40
80
60
40
60
60
40
60
60
60
60
60
60
60
60
40
30
40
60
40
23,200
93,926
89,144
44,955
44,910
70,000
3,364
11,090
965,250
161,316
64,233
345,147
30,000
430,900
87,457
2,128
160,650
92,180
483,950
66,150
108,000
1,740,000
1,620
151,200
13,500
Page 2 of 11
Material Project Name City State Contract Value Material Mil Quantity/SF
Cargill Salt South Lansing NY $0.00 80 123,975
Centennial Ag Supply Greeley CO $0.00 80 12,141
Cercia WWTP - RM Arsenal Commerce City CO $0.00 80 2,500
City of Willmar Phase I Willmar MN $11,507.50 60 12,600
Clustered Spires Golf Course Frederick MD 50.00 40 120,000
Coal Creek WW Reclamation Facility CO $19,703.57 60 39,645
Con -Agra Tank Containment Liner - Phase 2 Hastings NE $11,706.00 40 7,000
Copper Queen Events Pond Bizbee AZ $0.00 80 159,000
Coralville Golf Course Coralville IA $53,549.70 40 174,429
Craig WWTP Craig CO $0.00 40 87,750
Craig WWTP Phase 11 SE Lagoon Craig CO $0.00 40 117,000
Craig WWTP Phase 1I Section lI Craig CO $0.00 40 117,000
Cripple Creek & Victor Gold Mine Victor CO $0.00 80 72,600
Curecanti National Park Gunnison CO $0.00 40 222,000
D&D Farms Holyoke CO $0.00 40 470,115
Dad's Landfill _ Aurora CO $3,248.91 60 1,170
Daley Farms Waste Lagoon $0.00 40 263,755
Daneco, Inc. Houma LA $0.00 40 29,250
Dave Maschka Storage Pond Minnesota City MN $22,439.90 60 28,350
Delta Correctional Facility Delta CO 80.00 40 55,000
Denver International Airport Cenver CO $0.00 40 42,000
Denver International Airport Cenver CO $0.00 80 27,000
Denver Regional Landfill Erie CO $168,553.87 60 251,033
Desert Rose Golf Course $0.00 40 I 17,000
DIA Glycol Tank Area - Denver CO $19,450.00 40 81
Wednesday, October 20, 2004 Page 3 of 11
Material Project Name
City
State Contract Value Material Mil Quantity/SF
DIA New Tank Lining Phase 1 & 2 Denver CO $48,622.00 40 6,760
Diamond Star Ranch Eagle CO $0.00 40 132,610
Diamond Star Ranch Eagle CO 844,887.50 40 132,610
Dinosaur National Monument Vernal UT $0.00 40 50,000
1 Dows WWTP Dows IA $0.00 60 I10,000
DRM, Inc_ Gillette WY $0.00 40 37,625
DRM, Inc. Gillette WY $0.00 60 18,900
Durango UMTRA Durango CO $0.00 40 284,625
Dyess AFB Abilene TX $26,070.93 40 12,430
Eagle Mine Remediation Project Mintum CO $0.00 60 65,000
Eagle Mine Remediation Project Minturn CO $0.00 40 237,000
Eagle Mine Remediation Project Mintum CO $0.00 100 45,000
Eastman Kodak Windsor CO $0.00 80 1,000
El Jebel WWTP Town of El Jebel CO $0.00 40 110,000
El Jebel WWTP El Jebel CO $0.00 40 110,000
El Palomar Golf Courme Guadalahara - Mexico $0.00 60 465,000
Ellsworth AFB Rapid City SD $0.00 80 36,875
Excel Corporation Dodge City KS $248,448.37 40 313,425
Excel Corporation Dodge City KS $248,448.37 60 313,425
Falls City UMTRA Falls City . TX $0.00 40 680,000
Fargo Landfill Fargo ND $0.00 60 280,000
Farnsworth Construction Paonia CO $0.00 60 12,320
FiI-Estate Manila -Philippines $0.00 30 1,738,800
Fil-Estate Manila -Philippines $0.00 40 219,375
Flatiron/Frontier-Kemper Joint Venture Fort Lupton CO $0.00 60 47,880
Wednesday, October 20, 2004 Page 4 of 11
Material Project Name City State
Contract Value Material Mil Quantity/SF
FMC Scrubber System
Formost Golf International
Formost Golf International
Fort Carson Army Base
Fountain Landfill - Cell B Phase 1
Ft. Dodge, IA Nitrogen Plant
Ft. Lupton Cogen Lagoon Repairs
Fun Valley Resort
Galamb Mobile Homes
Gold Hill Mill
Grain Processing Corp.
Grand Junction UMTRA Phase I
Grand Junction UMTRA Phase II
Green River UMTRA
Greenfield Substation
Gunnison UMTRA
Gurabo - Puerto Rico-Cuidad Jardin Resort & CC
Hardage Site Remedy Corp.
Hastings (Adams County) Landfill Phase 11
Hay Springs WWTP
Hc.uaua Dairy
Hickok Plant Reverse Osmosis Evaporation Cells
Hickok Plant Reverse Osmosis Evaporation Cells
Hildalgo Energy Facility
Hillrose WWTP
Wednesday, October 20, 2004
Pocatella
Manila - Philippines
Manila -Philippines
Fort Carson
Fountain
Ft. Dodge
Ft. Lupton
Southpak
Watkins
Gold Hill
Washington
Grand Junction
Grand Junction
Green River
Sandusky
Gunnison
Gurabo
Lindsay
Hastings
Hay Springs
Fair Oaks
Ulysses
Ulysses
Edinberg
Hillrose
ID $28,080.00
$0.00
$0.00
CO $0.00
CO $167,627.92
IA $16,078.50
CO $27,963.00
CO $0.00
CO $0.00
CO $65,190.00
IN $75,178.80
CO $0.00
CO $0.00
UT $0.00
OH $8,594.00
CO $0.00
PR $9,869.86
OK $0.00
NE $80,713.15
NE $0.00
IN $145,327.50
KS $248,500.00
KS $248,500.00
TX $23,550.79
CO $0.00
60
40
40
40
40
40
60
40
40
60
60
40
40
40
40
40
40
40
60
60
60
40
60
60
40
6,116
702,000
921,375
19,000
39,420
1,350
3,500
40,000
33,964
53,000
55,689
150,000
275,000
50,000
2,116
190,000
232,906
190,125
150,500
151,200
387,540
298,000
302,400
32,760
410,000
Page 5 of 11
Material Project Name City State Contract Value Material Mil Quantity/SF
Hinds Energy Facility Jackson MS $41,746.92 60 57,060
Rollaway Lakes - Flood Rec II Albany GA $28,384.00 40 43,875
Hunt Field Runway Rehabilitation Lander WY $0.00 30 220,000
IBP - Anaerobic Lagoons Holcomb KS $0.00 60 468,000
IBP East Pond Holcomb KS $0.00 60 1,041,390
1BP West Pond Holcomb KS $0.00 100 1,136,250
IBP- Anaerobic Lagoons Holcomb KS $0.00 40 468,000
International Uranium Run -Off Pond Blanding UT $25,113.09 60 36,608
Iowa County Leachate Collection Facility Iowa County IA $0.00 60 32,000
J.A. McCullough WTP Colorado Springs CO $0.00 40 70,875
Jeffrey City Reclamation Project Jeffrey City WY $0.00 60 48,800
Johansen Farms Underwood MN $28,641.00 40 40,480
Julesburg WWTP Julesburg CO $0.00 40 120,000
Kelly AFB San Antonio TX $0.00 80 50,400
KLT Gas The Woodlands TX $376,271.97 40 979,875
KreidermacherDairy.Pond Altura MN $33,23.8.20 40 89,350
Kupier Water Treatment Plant Improvements Aurora CO $67,525.00 40 182,500
Lander Golf & Country Club Lander WY $0,00 40 73,125
Lemoore West WW Basin Liner Lemoore CA $208,262.34 80 464,400
Lone Oak Dairy Plainview MN $47,644.66 40 55,986
Longs Peak Water District Longmont CO $0.00 60 13,500
Lost Cabin Gas Plant Lysite WY $0.00 80 242,000
Lost Cabin Water Pond Lysite WY $178,557.62 80 74,250
Louisburg Sub -Area Shop Lagoons Louisburg KS $52,230.06 40 108,000
Lowry Landfill FTPA Waste Pit Denver CO $0.00 40 212,140
Wednesday, October 20, 2004
Page 6of11
Material Project Name City State
Contract Value Material Mil Quantity/SF
Lowry Landfill Superfund Site
Lucas Aerospace
Luke AFB
Luke AFB
Mallett Oil
Manila Southwoods Golf & CC
Maralex Resources
Martin Marietta Corporation
Maybell UMTRA
McCullough Reservoir
Mid-America Dairymen Inc.
Midway Landfill
Milliken Sanitation District WWP
MN Com Processors -Temp. Sludge Storage Liner
Molycorp, Inc.
Moncrief Oil
Monfort Waste Water Treatment Plant
Monfort Waste Water Treatment Plant
Monticello Mill Site (Phase II)
Monticello Mill Site (Phase II)
Moon Island Project
Moss -American Site
Mountain Region Corporation
Mt. Evans Outdoor Education Lab
Naturita UMTRA Mill Site
Wednesday, October 20, 2004
Aurora
Park City
Luke AFB
Luke AFB
Leadville
Cauite - Philippines
DeBeuque
Waterton Plant
Maybell
Colorado Springs
Ravenna
Colorado Springs
Milliken
Columbus
Louviers
Lysite
Garden City
Garden City
Monticello
Monticello
CI-IINA
Milwaukee
Grand Junction
Evergreen
Naturita
CO $0.00
UT $0.00
AZ $0.00
AZ $0.00
CO $0.00
$0.00
CO 50.00
CO $0.00
CO $0.00
CO $21,350.50
NE $0.00
CO $0.00
CO 50.00
NE $42,638.18
CO $0.00
WY $0.00
105 $139,586.00
KS 5139,586.00
CO $0.00
CO $0.00
$0.00
$14,118.72
$0.00
$10,624.00
$0.00
WI
CO
CO
CO
40
40
80
40
40
30
40
40
40
40
60
60
40
60
80
40
60
40
60
40
60
60
30
40
40
9,000
1,994
46,500
24,000
11,985
1,022,450
67,500
40,000
219,375
30,600
140,000
6,000
270,000
21,450
130,000
90,000
142,000
142,000
86,940
67,275
81,580
8,991
25,365
8,300
87,000
Page 7 of 11
Material Project Name City State Contract Value Material Mil Quantity/SF
Nevada Hydrocarbons Project Reno NV $0.00 80 60,000
Nevada Power Sunrise Station Las Vegas NV $45,115.99 40 43,875
Nevada Power -Clark Pond B&Overflow Las Vegas NV SI36,346.00 60 30,000
Northbank Golf Course San Angelo TX 50.00 40 482,625
1 Norwood Raw Water Reservoir Norwood CO $0.00 40 505,000
NSP - AS King Bayport MN $69,00L79 60 60,000
OEA WWTP Facilities Improvements Aurora CO $0.00 40 408,118
Old Works Golf Course Anaconda MT $0.00 60 220,000
Ovid WWTP Ovid CO $0.00 40 20,000
Pacific Junction Pacific Junction IA $0.00 60 58,750
Papillion Creek WWTP Belleview NB. $0.00 40 27,500
Park View Acres Little Falls ' MN $56,330.40 60 143,700
Pawnee Power Station Brush CO $0.00 100 133,000
Perdue Farms WWTP Cromwell KY $0.00 60 434,000
Perdue Farms WWTP Cromwell KY $0.00 60 434,000
Perry Creek Flood Protection - Phase 3 Sioux City IA $20,908.13 40 23,625
PFFJ Animal Waste Lagoon Snowflake AZ $0.00 40 1,463,616
PFFD Expansion Snowflake AZ $0.00 40 1,057,450
PFFJ, Inc. Snowflake AZ $0,00 40 321,750
PJKS - Lockheed Martin, Waterton Plant CO $7,373.46 40 3,375
PJKS Lockhead Martin Waterton Canyon CO $28,851.87 40 19,200
Ponce, Puerto Rico Ponce PR $250,339.50 40 489,250
Poppy Ridge Golf Course Livermore CA $0.00 40 175,500
Potato Starch Settling Pond ID $8,I60.00 80 3,450
Power Resourse Tank Liner Douglas WY $24,957.48 80 7,540
Wednesday, October 20, 2004 Page 8 of 11
Material Project Name City State Contract Value Material Mil Quantity/SF
PSCO Cameo Project Palisade CO $117,992.35 60 117,500
PSCO Pawnee Station Pond A I3rush CO $104,308.00 100 133,000
Pueblo Army Depot Pueblo CO $4,291.58 80 5,850
Pueblo Army Depot Pueblo CO $4,29L58 80 5,850
Pueblo Fish Hatchery Pueblo CO $0.00 40 270,000
Quant' Hills Dairy Rolling Stone MN $34,279.17 60 66,176
Reno County Landfill, Cell 1C Hutchison KS $79,872.00 40 88,000
Reno County Landfill, Cell 1C Hutchison KS $79,872.00 60 394,000
Rico Remediation Rico CO $0.00 60 56,700
Ridgeway WWTP Ridgeway IL $60,282.14 60 152,613
Rifle UMTRA Rifle CO $0.00 60 55,620
River Bend Subdivision Glenwood Springs WY $0.00 40 34,750
River Valley Ranch Carbondale CO $0.00 40 248,600
Riverton UMTRA Project Riverton CO $0.00 40 150,000
Riviera County Club Coral Gables FL $0.00 40 103,000
RMA Wastewater Litt Station Denver CO $15,125.00 60 1,000
Roaring Forks W WTP Carbondale CO $14,697.00 80 9,000
Robinson Brick Soil Pond Denver CO $0.00 30 25,600
Roulsen Basin Irrigation Straps Rifle CO $3,189.90 0
Royal Westmoreland Golf & CC St. James - Barbados $0.00 40 58,500
Royal Westmoreland Golf & CC Phase 0 St. James - Barbados 80.00 40 131,625
S.F. Phosphates Rock Springs WY $0.00 60 27,000
San Juan Gas Plant Bloomfield MN $0.00 40 32,168
San Juan Gas Plant Bloomfield MN $0.00 60 32,168
Santa Clara Golf Course Santa Clara CA $26,264.18 40 51,842
Wednesday, October 20, 2004 Page 9 of 11
Material Project Name
City
State Contract Value Material Mil Quantity/SF
Seaboard Farms Holyoak CO $13,972.50 0
Severence WWIP Severence CO $44,481.13 60 84,060
SF Phosphates PVDF Project Rock Springs WY $22,635.00 60 900
Shattuck Chemical Denver CO $0.00 30 84,375
Show Me Landfill Warrensburg MO $0.00 60 621,140
Silverton, CO HDPE Repairs Silverton CO $1,500.00 40 0
Sinclair Oil Corporation Sinclair WY $0.00 40 190,000
Sinclair OiI Corporation Sinclair WY $0.00 60 190,000
Slick Rock UMTRA Slick Rock CO $0.00 40 219,375
Solvay Minerals Rock Springs WY $0.00 100 7,000
South Evaporation Pond Reline Project Granger WY $50,366.15 40 175,500
Southern Golf & Country Club St. Michael - BarbadosW.I. $0.00 40 131,625
Southwind Development Corp. WWTP Garden City KS $0.00 40 146,000
Stanley Canyon Project Colorado Springs CO $0.00 40 36,000
Star Ranch Hutto TX $105,637.97 40 313,403
Steamboat Lake Stat Park Steamboat Springs CO $0.00 60 45,000
Steamboat Springs Airport Steamboat Springs CO $0.00 40 12,000
Sterling WWTP Sterling CO $0.00 40 131,625
Superior Golf Course Construction, Inc. Las Vegas NV $0.00 40 90,821
The Rapids New Castle CO $36,028.13 40 78,750
The Rapids New Castle CO $0.00 40 78,750
Total Golf Construction Freeport - Bahamas $0.00 30 94,500
Town of Frederick Golf Course Frederick MD $0.00 40 120,000
Transenergy Grinding, Inc. Houston TX $0.00 40 73,125
Tri-State Grimm Construction Commerce City CO 80 9,925
Wednesday, October 20, 2004 Page 10 of 11
Material Project Name City State Contract Value Material Mil Quantity/SF
Tri-State Power - Limon Site Limon CO $108,473.31 60 264,000
UMETCO Minerals Corporation Uravan CO $0.00 40 875,000
Union Pacific Tie Treatment Plant Laramie WY $0.00 40 39,000
United Airlines Fuel Restoration Project Denver CO $0.00 40 50,000
Univicersity of Nevada Reno NV $0.00 60 31,000
Velcon Filters Colorado Springs CO $0.00 60 15,000
Vertical Barrier Lining System $0.00 30 7,700
Veteran's Memorial Park Bolder City NV $70,353.00 40 200,200
Warren AFB Fire Training Facility Cheyenne WY $0.00 80 44,000
West Elk Mine Facility Srumnerset CO $0.00 60 13,166
Whiteman AF13 Whiteman AFB MO $0.00 60 75,600
Williams South Evaporation Pond Parachute CO $100,188.75 60 103,950
Williams South Evaporation Pond Parachute CO $100,188.75 40 32,010
Williston Basin Pipeline Worland WY $0.00 80 7,200
Williston Basin Pipeline Worland WY $0.00 40 14,625
Windy Ridge Dairy . Wheatfield ' IN $116,726.40 60 281,903
Wyoming Premium Farms Wheatland WY $0.00 60 190,260
Wyondotte Golf Club Lake Orion MI $0.00 40 121,575
Zuni Station Ash Pond Lakewood CO $0.00 60 56,700
Wednesday, October 20, 2004
Grand Total $7,765,935 45,981,481
Page 11 of 11
U Anchor Trench
1.5' deep x 1' wide
Trench Backfill
3' Min,
1
Fluid Level
Compacted Subgrade
V Anchor Trench
2' deep x 4' wide
Trench Backfill
3' Min.
Fluid Level
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Anchor trench dimensions for a specific project must be determined .
by the engineer to suit local soil conditions._
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Anchor Trench Details
Diagram D-1
Para -SET
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Stud Anchor
6
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JAW
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Samuel Engineering, Inc.
We Provide Solutions
5775 DTC Boulevard, Suite 200
Englewood, Colorado 80111-3227
Orig./Lead Eng.:
Project Engineer Approval:
Project Manager Approval:
Client Approval:
CONSTRUCTION SPECIFICATION
SPECIFICATION 02223
BACKFILLING
FOR
Encana Oil & Gas (USA) Inc.
Middle Fork Compressor Station
Project No.: 4107-01
-FA,/ Tu5(_ 63,e.of0
Tel: 303-714-4840
Fax: 720-482-8327
Date
Date
Date
Date
Rev. No.
A
By
Revisions
Approval
Date
F
Issued for Bid
1- 1g-0\5
Engineering • Project Controls
Estimating • Construction Management
ENCANA OIL & GAS (USA) INC. CONSTRUCTION SPECIFICATION 02223
PROJECT NAME BACKFILLING
PROJECT NO.: 4107-01 REV. DATE: JANUARY 19, 2005, PAGE 1
PART 1 - GENERAL
1.1 SECTION INCLUDES
A. Filling to subgrade lines and elevations shown on the drawings.
B. Backfilling areas of over excavation.
C. Backfilling of underground services and drainage structures.
D. Compaction of all filling materials.
1.2 RELATED SECTIONS
A. Specification 02221 — Excavation.
B. Specification 03300 — Cast -In -Place Concrete
1.3 REFERENCES
A. ASTM C136 Test Method for Sieve Analysis for Fine and Coarse
Aggregates
B. ASTM D698 Test Methods for Laboratory Compaction Characteristics of
Soils Using Standard Effort (12,400 ft-lbflft3)
C. ASTM D1556 Test Method for Density and Unit Weight of Soil in Place
by the Sand -Cone Method
D. ASTM D1557 Test Methods for Laboratory compaction Characteristics of
Soil Using Modified Effort (56,000 ft-lbf/ft3)
E. ASTM D2922 Test Methods for Density of Soil and Soil -Aggregate in
Place by Nuclear Methods (Shallow Depth)
F. ASTM D4254 Test Methods for Minimum Index Density and Unit Weight
of Soils and Calculation of Relative Density
PART 2 - PRODUCTS
2.1 FILL MATERIALS
A. Pipe Bedding — Bedding material aggregates shall be well graded, rounded
crushed stone or crushed gravel, graded with the following limits:
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ENCANA OIL & GAS (USA) INC.
PROJECT NAME
PROJECT NO.: 4107-01
CONSTRUCTIuN SPECIFICATION 02223
BACKFILLING
REV. DATE: JANUARY 19, 2005, PAGE 2
Sieve Size
Percent Passing
112 inch
100
3/8 inch
85 to 100
Number 4
10 to 30
Number 8
0 to 10
Number 16
Oto 5
B. Filler Materials: The aggregates for drain filters shall consist of coarse grained
free draining gravel, slag, or crushed stone with rounded or angular particle shape,
grade within the following limits:
Sieve Size
Percent Passing
1-1/2 inch
100
1 inch
95 to 100
1/2 inch
25 to 60
Number 4
0 to 10
Number 8
0 to 5
Aggregate Base and Facility Surfacing Material: The aggregates for base course
shall be crushed stone, crushed slag, crushed gravel or natural gravel, with angular
particle shapes being preferred, graded within the following limits:
Sieve Size
1 inch
3/4 inch
Number 4
Number 40
Number 200
Percent Passing
100
50 to 90
30 to 60
7 to 30
0 to 5
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ENCANA OIL & GAS (USAF INC. CONSTRUCTIuN SPECIFICATION 02223
PROJECT NAME BACKFILLING
PROJECT NO.: 4107-01 REV. DATE: JANUARY 19, 2005, PAGE 3
D. Common Fill: Characteristics to be determined by testing laboratory and
approved by the Engineer.
PART 3 - EXECUTION
3.1 PREPARATION
A. The Contractor is responsible for laying out and staking all work from base lines
and survey reference points established by the Engineer.
B. All areas receiving fill shall be proof rolled prior to placing fill. Proof rolling
equipment shall be approved by the Engineer. Any regions which in the opinion
of the Engineer exhibit unsatisfactory behaviour shall be removed as directed by
the Engineer.
C. The Contractor is responsible for locating, and protecting as required all
underground services and structures from damage prior to commencing
backfilling operations.
D. The Contractor shall obtain authorization to commence backfilling from the
Engineer prior to the placement of any material. Material placed without the
authorization of the Engineer shall be removed as directed by the Engineer at the
Contractor's expense.
3.2 FILLING
A. Areas shall be filled to the lines and grades shown on the drawings with material
specified on the drawings. Where material is not specified on the drawings,
common fill shall be used.
B. Filling operations shall not continue over wet, frozen or spongy surfaces. The
Contractor is responsible for maintaining all necessary drainage.
C. Maximum lifts of fill shall not exceed 6 -inches of loose material.
D. Fill material shall be placed such that ponding of water is not possible. Any
backfill material damaged by the weather or ground water seepage shall be
removed and replaced at the Contractor's expense.
E. Fill materials shall he watered or dried, as required, to obtain the specified
compaction requirements.
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ENCANA OIL & GAS (USA) INC. CONSTRUCTIuN SPECIFICATION 02223
PROJECT NAME BACKFILLING
PROJECT NO.: 4107-01 REV. DATE: JANUARY 19, 2005, PAGE 4
F. Filling against concrete work or masonry walls shall not commence until the
structures have reached sufficient strength to withstand the pressure of the backfill
as placed and compacted. In no case shall filling commence prior to concrete and
masonry having cured a minimum of 28 days unless approved by the Engineer.
Lateral support shall be provided for walls during backfilling and care should be
taken so as not to over -compact causing excessive stress on the walls.
Compacting equipment shall be sized such that damage or displacement of the
structure does not occur. The Contractor shall be responsible for repairing any
damage to structures resulting from the compaction of the fill. All repairs shall be
made at the Contractor's expense.
3.3 TOLERANCES
A. Top surface of filling under roadways or bedding material shall be within 0.1 foot
of the specified level.
B. Finish surfaces directly under concrete shall be finished to a tolerance of minus 1 -
inch to plus zero -inch.
C. Other areas shall be within 0.3 feet of the specified level and slopes shall be
maintained such that ponding does not occur.
3.4 COMPACTION REQUIREMENTS
A. Unless specified otherwise on the drawings the following minimum density
requirements apply.
General Fill: 95 percent of maximum unit dry density obtained in accordance
with ASTM D698.
3.5 FIELD QUALITY CONTROL
A. Field inspection tests will be performed by the Engineer. Placement of fill over an
area tested by the Engineer shall be at the Contractor's risk prior to notification by
the Engineer that the test results are acceptable.
B. If tests indicate work does not meet specified requirements, the Contractor shall
rework the area. Reworking the area and retesting shall be at the Contractor's
expense.
END
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5E Samuel Engineering, Inc.
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Samuel Engineering, Inc.
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5775 DTC Boulevard, Suite 200 Tel: 303-719-4840
Englewood, Colorado 80111-3227 Fax: 720-482-8327
Orig./Lead Eng.:
Project Engineer Approval:
Project Manager Approval:
Client Approval:
CONSTRUCTION SPECIFICATION
SPECIFICATION 02776
GEONET DRAINAGE LAYER
FOR
Encana Oil & Gas (USA) Inc.
Middle Fork Compressor Station
Project No.: 4107-01
Q . a�1
Date
Date
Date
Date
Rev. No.
By
Revisions
Approval
Date
A
Issued for Bid
Engineering • Project Controls • Estimating • Construction Management
ENCANA OIL & GAS (USA) INC.
MIDDLE FORK COMPRESSOR STATION
PROJECT NO.: 4107-01
CONSTRUCTION SPECIFICATION 02776
GEONET DRAINAGE LAYER
REV. DATE: JANUARY 19, 2005, PAGE 1
PART 1 - GENERAL
1.1 SECTION INCLUDES
A. Supply of geonet.
B. Shop testing.
C. Preparation for shipment.
D. Installation of Synthetic geonet.
E. Inspection and Testing.
1.2 REFERENCE STANDARDS
A. ASTM D792 Test Methods for Density and Specific Gravity (Relative
Density) of Plastics by Displacement.
B. ASTM D1238 Test Method for Melt Flow Rates of Thermoplastics by
Extrusion Plastometer.
C. ASTM D1505 Test Method for Density of Plastics by the Density -Gradient
Technique.
D. ASTM D1603 Test Method for Carbon Black in Olefin Plastics.
E. ASTM D4716 Test Method for Determining the (In -Plane) Flow Rate per
Unit Width and Hydraulic Transmissivity of a Geosynthetic
Using a Constant Head.
F. ASTM D5035 Standard Test Method for Breaking Force and Elongation of
Textile Fabrics (Strip Method).
G. ASTM D5199 Test Method for Measuring Nominal Thickness of
Geosynthetics.
1.3 SUBMITTALS
A. The supplier shall submit the following items to the Engineer for approval, prior
to acceptance of a proposal.
1. Documentation of manufacturer's qualifications.
2. Manufacturer's Quality Control program manual or descriptive
documentation.
3. Detailed Schedule of fabrication.
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MIDDLE FORK COMPRESSOR STATION
PROJECT NO.: 4107-01
CONSTRUCTION SPECIFICATION 02776
GEONET DRAINAGE LAYER
REV. DATE: JANUARY 19, 2005, PAGE 2
4. Description of joining procedure.
5. Drawings showing, as a minimum, the layout and details of penetrations,
geonet jointing and geonet anchorage to concrete and other structures.
6. Details of recommended installation procedures, specifications of field
joining requirements and testing methods.
7. Manufacturer affidavit to the Engineer that the furnished material will
meet, in every aspect, the requirements set forth in the specification.
C. Prior to delivery of the liner, the fabricator shall submit certificates of compliance
with the requirements of the geonet material properties and testing methods
specified herein.
B. The installer shall submit documentation of installer's qualifications.
1.4 QUALITY CONTROL
A. Manufacturer's Qualifications
1. The manufacturer of geonet of the type specified or similar product shall
have at least five years experience in the manufacture of such geonet. In
addition, the geonet manufacturer shall have manufactured at least
10,000,000 ft2 of the specified type of geonet or similar product during the
last five years.
Installer's Qualifications
1. The geonet installer shall be the Manufacturer, approved Manufacturer's
installer or a contractor approved by the Engineer to install the geonet.
2. The geonet installer shall have a least three years experience in the
installation of the specified geonet or similar product.
3. Installation shall be performed under the direction of a field Installation
Supervisor who shall be responsible throughout the geonet installation, for
geonet panel layout, patching, joining, testing, repairs and all other
activities of the geonet installer. Throughout testing the Supervisor shall
retain all results, reports and certificates as they are generated for the
section of the work.
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ENCANA OIL & GAS (USA) INC.
MIDDLE FORK COMPRESSOR STATION
PROJECT NO.: 4107-01
CONSTRUCTION SPECIFICATION 02776
GEONET DRAINAGE LAYER
REV. DATE: JANUARY 19, 2005, PAGE 3
PART 2 - PRODUCTS
2.1 MATERIAL PROPERTIES
A. Material supplied as a geonet shall be of domestic virgin first -quality polyethylene
design and manufactured specifically for the purpose of leachate collection and
removal system.
B. Geonet material shall be produced so as to be free of holes, blisters, undispersed
raw materials, or any sign of contamination by foreign matter.
C. The finished product shall be supplied as prefabricated panels in rolls custom
designed for the project so as to minimize field joining. Panel sizes shall be
approved by the Engineer.
D. Sufficient geonet material to allow for shrink and wrinkles shall be furnished to
cover all lined areas shown on the drawings including panel overlaps at field
seams and anchor trenches.
E. The geonet supplied shall meet or exceed the following minimum standards.
PROPERTY
TEST METHOD
VALUE
Gauge (nominal)
ASTM D5199
200 mil.
Density
ASTM D1505/ D792
.94 gin/cc
Tensile Strength
ASTM D5035
45 lb
Carbon Black Content
ASTM D1603
2.0%-3,0%
Transmissivity
ASTM D4716
7 gal/min-ft
PART 3 - EXECUTION
3.1 TESTING
A. The geonet shall be tested by its manufacturer once every 50,000 square feet for
listed properties, except transmissivity, which shall be tested once every 100,000
square feet.
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ENCANA OIL & GAS (USA) INC.
MIDDLE FORK COMPRESSOR STATION
PROJECT NO.: 4107-01
CONSTRUCTION SPECIFICATION 02776
GEONET DRAINAGE LAYER
REV. DATE: JANUARY 19, 2005, PAGE 4
13. Prior to factory seaming, all roll goods shall be unwound and inspected on both
sides for unmixed or poorly dispersed ingredients, the presence of contaminants or
foreign particles, holes, blisters, or any other defects. All defects and impurities
shall be removed or repaired before the geonet is fabricated into panels.
Manufacturing process irregularities which present irregular thickness and
imperfections that will not provide even stress distribution throughout the sheet
will be rejected and replaced.
C. A log shall be maintained of all above and additional testing performed showing
lot number, roll number, panel number, materials, type, date, time and test results.
This log shall be made available to the Engineer upon delivery of the material.
3.2 MARKINGS
A. Prominent and indelible markings or labels on each roll shall identify the
manufacturer, product description, roll number, panel number as listed on
drawings, length and width of roll, thickness of material, and direction to unroll.
3.3 SHIPMENT AND DELIVERY
A. The geonet installer shall be responsible for all freight, transportation to site and
handling and storage on site, including site security.
13. Each roll shall be securely packaged and wrapped for shipment so as to prevent
the unravelling of material during handling and shipping. Lifting slings, non-
destructive to the liner rolls, shall be provided for each roll.
C. Materials shall be stored in such a manner that no surface irregularities or other
influences will apply point loads, abrasions, cuts or distortions or other forms of
damage to the rolls.
D. No more than three rolls of geonet shall be stacked one on top of the other.
E. Unloading, handling and storage instructions shall be supplied to the Engineer
prior to shipment.
PART 4 — PREPARATION, INSTALLATION, INSPECTION & TESTING
4.1 PREPARATION
A. Surfaces shall be smooth and free of all rocks, stones, sticks, roots, sharp objects,
or debris or any kind. The surface should provide a finrn, unyielding foundation
for the membrane with no sudden, sharp or abrupt changes or break in grade. No
standing water or excessive moisture shall be allowed. The geonet installer shall
certify in writing that the surface on which the geonet is to be installed is
acceptable before commencing work.
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ENCANA OIL & GAS (USA) INC.
MIDDLE FORK COMPRESSOR STATION
PROJECT NO.: 4107-01
CONSTRUCTION SPECIFICATION 02776
GEONET DRAINAGE LAYER
REV. DATE: JANUARY 19, 2005, PAGE 5
4.2 INSTALLATION
A. Geonets shall be placed and covered in a timely manner.
B. Geonet overlaps shall be specified by the manufacturer.
C. Each component of the geonet will be secured to the like component at overlaps.
D. Geonet overlaps shall be secured by tying with contrasting colored durable plastic
fasteners or polymer braid. Metallic fasteners are not allowed.
E. Tying shall be one row, at least every 5 ft. up and down any slope, every 6 in.
along end-to-end joints on any slope, every 2.5 in. on end-to-end joints on
horizontal surfaces, and every 9 ft. on edge joints on horizontal surfaces. Tying
shall be every 6 in. in the anchor trench.
F. In general, no horizontal seams shall be allowed on slopes. In any case, horizontal
seams on slopes shall be minimized. If necessary, horizontal seams in adjacent
rolls shall be staggered by a distance of at least 16 ft.
G. In the presence of wind, all geonets shall be weighted by sandbags or approved
equivalent. Such anchors shall be installed during placement and shall remain in
place until replaced with cover material.
H. The geonet installer shall not use heavy equipment to traffic above the geonet
without approved protection.
I. The geonet shall be properly anchored to resist sliding in the anchor trench.
Anchor trench compacting equipment shall not come into direct contact with the
geonet.
J. Under no circumstances shall the geonet be welded to geomembrane.
K. Sewing shall be done using polymeric thread with chemical and ultraviolet light
resistance properties equal to or exceeding those of the geotextile. Sewing shall be
done using machinery and stitch types specified in the project specifications or as
approved in writing by the Engineer.
L. Any rips, tears or damaged areas on the deployed geonet shall be removed and
patched. The patch shall be secured to the original geonet by tying every 6 inches
with the approved tying devices.
4.3 INSPECTION AND TESTING
A. The Engineer reserves the right of access for inspection of any or all phases of this
installation.
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ENCANA OIL & GAS (USA) INC.
MIDDLE FORK COMPRESSOR STATION
PROJECT NO.: 4107-01
CONSTRUCTION SPECIFICATION 02776
GEONET DRAINAGE LAYER
REV. DATE: JANUARY 19, 2005, PAGE 6
C. A quality -control technician shall visually inspect each seam. Any area showing a
defect shall be marked and repaired in accordance with Engineer -approved
procedures. The locations and types of defect shall be indicated on the field
erection drawings.
4.4 SITE FACILITIES AND CLEANUP
A. Protect excavations by methods required to prevent cave-in or loose soil from
falling into excavation.
B. Protect bottom of excavations and soil adjacent to and beneath foundation from
freezing.
C. The geonet installer shall keep the area in which he is working clean of all debris.
Upon leaving any area after completion of work, Contractor shall remove from the
premises all rubbish and unused materials except materials furnished by the
Engineer.
PART 5 — QUALITY CONTROL
5.1 Before award, the geonet installer shall submit Quality Control Procedures.
END
Monuments and SetlingslbfifzgeraldlDesklop\02776 Geonet Drafnage Layer.doc REVISION 0
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Samuel Engineering, Inc,
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5775 DTC Boulevard, Suite 200 Tel: 303-714-4840
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Client Approval:
CONSTRUCTION SPECIFICATION
SPECIFICATION 02775
POLYETHYLENE GEOMEMBRANE LINER
FOR
Encana Oil & Gas (USA) Inc.
Middle Fork Compressor Station
Project No.: 4107-01
Date
Date
Date
Date
Rev. No. By Revisions Approval Date
A
Issued for Bid
Engineering • Project Controls • Estimating • Construction Management
ENCANA OIL & GAS (USA) INC.
MIDDLE FORK COMPRESSOR STATION
PROJECT NO.: 4107-01
CONSTRUCTION SPECIFICATION 02775
POLYETHYLENE GEOMEMBRANE LINER
REV. DATE: JANUARY 19, 2005, PAGE 1
PART 1 - GENERAL
1.1 SECTION INCLUDES
A. Supply of synthetic liner system.
B. Shop testing.
C. Preparation for shipment.
D. Installation of Synthetic Liner system
E. Inspection and Testing
1.2 REFERENCE STANDARDS
A. ASTM D413 Test Methods for Rubber Property - Adhesion to Flexible
Substrate.
B. ASTM D570 Method for Water Absorption of Plastics.
C. ASTM D638 Test Method for Tensile Properties of Plastic
D. ASTM D696 Test Method for Coefficient of Linear Thermal Expansion
of Plastics Between -30°C and 30°C with a Vitreous Silica
Dilatometer.
E. ASTM D746 Test Method for Brittleness Temperature of Plastics and
Elastomers by Impact.
F. ASTM D751 Test Methods for Coated Fabrics.
G. ASTM D792 Test Methods for Density and Specific Gravity (Relative
Density) of Plastics by Displacement.
H. ASTM D882 Test Method for Tensile Properties of Thin PIastic Sheeting.
I. ASTM D 1004 Test Method for Tear Resistance (Graves Tear) of Plastic
Film and Sheeting.
J. ASTM D1149 Test Method for Rubber Deterioration - Surface Ozone
Cracking in a Chamber.
K. ASTM D1204 Test Method for Linear Dimensional Changes of Nonrigid
Thermoplastic Sheeting or Film at Elevated Temperature,
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ENCANA OIL & GAS (USA) INC.
MIDDLE FORK COMPRESSOR STATION
PROJECT NO.: 4107-01
CONSTRUCTION SPECIFICATION 02775
POLYETHYLENE GEOMEMBRANE LINER
REV. DATE: JANUARY 19, 2005, PAGE 2
L. ASTM D1238 Test Method for Melt Flow Rates of Thermoplastics by
Extrusion Plastometer.
M. ASTM D1505 Test Method for Density of Plastics by the Density -Gradient
Technique.
N. ASTM D1593 Nonrigid Vinyl Chloride Plastic Film and Sheeting.
O. ASTM D1603 Test Method for Carbon Black in Olefin Plastics.
P. ASTM D1693 Test Method for Environmental Stress -Cracking of
Ethylene Plastics.
Q. ASTM DI822 Test Method for Tensile -Impact Energy to Break Plastics
and Electrical Insulating Materials.
R. ASTM D3370 Practices for Sampling Water from Closed Conduits.
S. ASTM D3895 Test Method for Oxidative -Induction Time of Polyolefins
by Differential Scanning Calorimetry.
T. ASTM D4218 Test Method for Determination of Carbon Black Content in
Polyethylene Compounds by the Muffle -Furnace
Technique.
U. ASTM D4437 Practice for Determining the Integrity of Field Seams Used
in Joining Flexible Polymeric Sheet Geomembranes.
V. ASTM D4632 Test Method for Grab Breaking Load and Elongation of
Geotextiles.
W. ASTM D4716 Test Method for Determining the (In -Plane) Flow Rate per
Unit Width and Hydraulic Transmissivity of a Geosynthetic
Using a Constant Head.
X. ASTM D4833 Test Method for Index Puncture Resistance of Geotextiles,
Geomembranes, and Related Products.
Y. ASTM D4885 Test Method for Determining Performance Strength of
Geomembranes by the Wide Strip Tensile Method.
Z. ASTM D5199 Test Method for Measuring Nominal Thickness of
Geosynthetics.
AA. ASTM D5323 Practice for Determination of 2% Secant Modulus for
Polyethylene Geomembranes
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ENCANA OIL & GAS (USA) INC
MIDDLE FORK COMPRESSOR
PROJECT NO.: 4107-01
STATION
CONSTRUCTION SPECIFICATION 02775
POLYETHYLENE GEOMEMBRANE LINER
REV. DATE: JANUARY 19, 2005, PAGE 3
BB. ASTM D5397
CC. ASTM D5596
DD. ASTM D5617
EE. ASTM D5741
FF. ASTM D5721
GG. ASTM D5820
HH. ASTM D5885
II. ASTM D6365
JJ. ASTM D6392
KK. ASTM D6693
LL.
GRI GM 6
MM. GRI GM 9
NN. GRI GM 10
00. GRI GM 13
PP.
GRI GM 14
Test Method for Evaluation of Stress Crack Resistance of
Polyolefin Geomembranes Using Notched Constant Tensile
Load Test.
Test Method For Microscopic Evaluation of the Dispersion
of Carbon Black in Polyolefin Geosynthetics.
Test Method for Multi -Axial Tension Test for
Geosynthetics.
Practice for Geomembrane Seam Evaluation by Vacuum
Chamber.
Practice for Air -Oven Aging of Polyolefin Geomembranes.
Practice for Pressurized Air Channel Evaluation of Dual
Seamed Geomembranes.
Test Method for Oxidative Induction Time of Polyolefin
Geosynthetics by High -Pressure Differential Scanning
Calorimetry.
Practice for the Nondestructive Testing of Geomembrane
Seams Using the Spark Test.
Test Method for Determining the Integrity of Nonreinforced
Geomembrane Seams Produced Using Thermo -Fusion
Methods.
Test Method for Determining Tensile Properties of
Nonreinforced Polyethylene and Nonreinforced Flexible
Polypropylene Geomembranes.
Pressurized Air Channel Test for Dual Seamed
Geomembranes.
Cold Weather Seaming of Geomembranes.
Specification for Stress Crack Resistance of HDPE
Geomembrane Sheet.
Test Properties, Testing Frequency and Recommended
Warranty for High Density Polyethylene (HDPE) Smooth
and Textured Geomembranes.
Test Frequencies for Destructive SeamTesting.
5E Samuel Engineering, Inc.
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ENCANA OIL & GAS (USA) INC.
MIDDLE FORK COMPRESSOR STATION
PROJECT NO.: 4107-01
CONSTRUCTION SPECIFICATION 02775
POLYETHYLENE GEOMEMBRANE LINER
REV. DATE: JANUARY 19, 2005, PAGE 4
1.3 SUBMITTALS
A. The supplier shall submit the following items to the Engineer for approval, prior
to acceptance of a proposal.
1. Documentation of manufacturer's qualifications.
2. Manufacturer's Quality Control program manual or descriptive
documentation.
3. Sample of the liner material showing weld.
4. Detailed Schedule of fabrication.
5. Description of welding procedure.
6. Drawings showing, as a minimum, the layout of liner system and details of
penetrations, liner jointing and liner anchorage to concrete and other
structures. Seams should generally follow the direction of the slope. Butt
seams or roll -end seams should not occur on a slope unless approved by
the Engineer. Butt seams on a slope, if allowed, should be staggered.
7. Details of recommended installation procedures, specifications of field
seam requirements and testing methods.
8. Manufacturer affidavit to the Engineer that the furnished material will
meet, in every aspect, the requirements set forth in the specification.
C. Prior to delivery of the liner, the fabricator shall submit certificates of compliance
with the requirements of the liner material properties and testing methods
specified herein.
13. The installer shall submit documentation of installer's qualifications and a Iist of
quality control procedures.
1.4 QUALITY CONTROL
A. Manufacturer's Qualifications
1. The manufacturer of geomembrane of the type specified or similar product
shall have at least five years experience in the manufacture of such
geomembrane. In addition, the geomembrane manufacturer shall have
manufactured at least 10,000,000 ft2 of the specified type of geomembrane
or similar product during the last five years.
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ENCANA OIL & GAS (USA) INC.
MIDDLE FORK COMPRESSOR STATION
PROJECT NO.: 4107-01
CONSTRUCTION SPECIFICATION 02775
POLYETHYLENE GEOMEMBRANE LINER
REV. DATE: JANUARY 19, 2005, PAGE 5
B. Installer's Qualificaitons
1. The geomembrane installer shall be the Manufacturer, approved
Manufacturer's installer or a contractor approved by the Engineer to install
the geomembrane.
2. The Geomembrane Installer shall have a least three years experience in the
installation of the specified geomembrane or similar product.
3. Installation shall be performed under the direction of a field Installation
Supervisor who shall be responsible throughout the geomembrane
installation, for geomembrane panel layout, seaming, patching, testing,
repairs and all other activities of the Geomembrane Installer. Throughout
testing the Supervisor shall retain all results, reports and certificates as
they are generated for the section of the work.
4. Seaming shall be performed under the direction of a Master Seamer (who
may also be the Field Installation Supervisor or Crew Foreman) who has
seamed a minimum of 3,000,000 ft2 of geomembrane of the type specified
or similar product, using the same type of seaming apparatus to be used in
the current project. The Field Installation Supervisor and/or Master
Seamer shall be present whenever seaming is performed.
5. All seaming, patching, other welding operations, and testing shall be
performed by qualified technicians employed by the Geomembrane
Installer.
PART 2 - PRODUCTS
2.1 MATERIAL PROPERTIES
A. Material supplied as a membrane liner shall be of domestic virgin first -quality
polyethylene design and manufactured specifically for the purpose of liquid
containment in hydraulic structures.
13. Liner material shall be produced so as to be free of holes, blisters, undispersed
raw materials, or any sign of contamination by foreign matter.
C. The finished product shall be supplied as prefabricated panels in rolls custom
designed for the project so as to minimize field seaming. Panel sizes shall be
approved by the Engineer.
D. The supplier shall balance the actual job requirements against the drawings for
supplying materials.
C:IDocuments and SetlingslbfilzgeraldlDeshtop102775 Poiyethtene Geomembran Llner.docREVISION 0
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ENCANA OIL & GAS (USA) INC.
MIDDLE FORK COMPRESSOR STATION
PROJECT NO.: 4107-01
CONSTRUCTION SPECIFICATION 02775
POLYETHYLENE GEOMEMBRANE LINER
REV. DATE: JANUARY 19, 2005, PAGE 6
E. Sufficient Iining material to allow for shrink and wrinkles shall be furnished to
cover all lined areas shown on the drawings including panel overlaps at field
seams and anchor trenches.
F. The liner material supplied shall not be textured.
G. The liner material supplied shall meet or exceed the following minimum
standards.
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ENCANA OIL & GAS (USA) INC.
MIDDLE FORK COMPRESSOR STATION
PROJECT NO.: 4107-01
CONSTRUCTION SPECIFICATION 02775
POLYETHYLENE GEOMEMBRANE LINER
REV. DATE: JANUARY 19, 2005, PAGE 7
PROPERTY
TEST METHOD
VALUE
Gauge (nominal)
ASTM D5199
60 mil.
Density
ASTM D1505/ D792
.94 gm/cc
Strength
Tensile @ yield
@ break
Elongation @ yield
@ break
ASTM D638
Type IV
126 pound per inch of width
228 pounds per inch of width
12%
700%
Tear Resistance
ASTM D1004 - Die C
42 lb
Puncture Resistance
FTMS 101B
108 lb
Coefficient of Linear
Expansion (max)
ASTM D696
.00012/°C
Low Temperature Brittleness
ASTM D746
-60°C
Stress Crack Resistance
ASTM D5397
300 hrs.
Carbon Black Content
ASTM D1603
2.0%-3,0%
Carbon Black Dispersion
ASTM D3015
Al, A2, or Bl
Melt Index
ASTM D1238- E
<.5 g/1 Omin
Dimensional Stability
ASTM D1204 (82°C/1 hr.)
+/-2 % change (max)
Factory and Field Seam
Requirements:
bonded seam strength, shear
peel (Fusion)
peel (Extrusion)
ASTM D 4437
120 lb/in width
84 lb/in width
78 lb/in width
Oxidative Induction Time
ASTM D3895
100 minutes
Oven Aging at 85°C
ASTM D5721/ASTM D3895
55 % retained after 90 days
UV Resistance/ High Pressure
ASTM D 5885/ GRI GM11
50% retained after 1600 hrs.
C\Documenls and SelUngslbfilzgeraldOesk1op102775 Polyeihlene Geornembran Liner.docREVISION I}
SE Samuel Engineering, Inc.
Wo Provrda Solution
ENCANA OIL & GAS (USA) INC.
MIDDLE FORK COMPRESSOR STATION
PROJECT NO.: 4107-01
CONSTRUCTIUN SPECIFICATION 02775
POLYETHYLENE GEOMEMBRANE LINER
REV. DATE: JANUARY 19, 2005, PAGE 8
H. All tensile and elongation properties of samples taken in the machined and
transverse directions shall not vary more the 10% in the finished sheet.
I. Liner material shall be uniform in material properties and shall be resistant to
ultraviolet rays.
J. Seaming shall primarily be performed using automatic fusion welding equipment
and techniques. Extrusion welding shall be used where fusion welding is not
possible such as at pipe penetrations, patches, repairs and short runs of seams.
PART 3 - EXECUTION
3.1 TESTING
A. The Manufacturer shall take at least three random samples from every fabricated
roll of lining material. Samples shall be tested by a qualified laboratory by
methods specified in Section 2.1 for thickness, strength, tear resistance, low
temperature impact, stress cracking resistance, density, dimensional stability,
carbon black content and dispersion, melt flow index, and oxidation induction
time.
B. Prior to factory seaming, all roll goods shall be unwound and inspected on both
sides for unmixed or poorly dispersed ingredients, the presence of contaminants or
foreign particles, holes, blisters, or any other defects. All defects and impurities
shall be removed or repaired before the membrane is fabricated into panels.
Surface of the sheet shall be as close to mirror-like finish as possible.
Manufacturing process irregularities which present irregular thickness and
imperfections that will not provide even stress distribution throughout the sheet
will be rejected and replaced.
C. A log shall be maintained of all above and additional testing performed showing
lot number, roll number, panel number, materials, type, date, time and test results.
This log shall be made available to the Engineer upon delivery of the material.
3.2 MARKINGS
A. Prominent and indelible markings or labels on each roll shall identify the
manufacturer, product description, roll number, panel number as listed on
drawings, length and width of roll, thickness of material, and direction to unroll.
3.3 SHIPMENT AND DELIVERY
A. The geomembrane installer shall be responsible for all freight, transportation to
site and handling and storage on site, including site security.
B. Each roll shall be securely packaged and wrapped for overseas shipment so as to
prevent the unravelling of material during handling and shipping. Lifting slings,
$E Samuel Engineering, Inc.
We Provide Solullon+
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ENCANA OIL & GAS (USA) INC.
MIDDLE FORK COMPRESSOR STATION
PROJECT NO.: 4107-01
CONSTRUCTION SPECIFICATION 02775
POLYETHYLENE GEOMEMBRANE LINER
REV. DATE: JANUARY 19, 2005, PAGE 9
non-destructive to the liner rolls, shall be provided for each roll.
C. Materials shall be stored in such a manner that no surface irregularities or other
influences will apply point loads abrasions, cuts or distortions or other forms of
damage to the rolls.
D. No more than three rolls of flexible membrane liner shall be stacked one on top of
the other.
E. Unloading, handling and storage instructions shall be supplied to the Engineer
prior to shipment.
PART 4 - PREPARATION, INSTALLATION, INSPECTION & TESTING
4.1 PREPARATION
A. Surfaces to be lined shall be smooth and free of all rocks, stones, sticks, roots,
sharp objects, or debris or any kind. The surface should provide a firm,
unyielding foundation for the membrane with no sudden, sharp or abrupt changes
or break in grade. No standing water or excessive moisture shall be allowed. The
installer shall certify in writing that the surface on which the membrane is to be
installed is acceptable before commencing work.
4.2 INSTALLATION
A, Only the panels that can be welded on that same day shall be deployed.
B, Individual panels of liner material shall be laid out and overlapped the minimum
distance according to installation procedures provided by the material
Manufacturer. Extreme care shall be taken by the installer in the preparation of
the areas to be welded or seamed. The area to be welded or seamed shall be
cleaned and prepared according to installation procedures provided by the material
Manufacturer and be subject to approval by the Engineer.
C. Seams which parallel the pond side slopes will not be permitted on the slopes or
within five feet of the slope toes.
D. All welding material or seaming adhesive shall be of a type recommended and
supplied by the Manufacturer and shall be delivered in the original sealed
containers - each with an indelible label bearing the brand name, manufacturer's
mark number, and complete directions as the proper storage.
E. The welding equipment used shall be capable of continuously monitoring and
controlling the temperature of the zone of contact where the machine is actually
fusing the lining material so as to ensure that changes in environmental conditions
will not affect the integrity of the weld.
C:\Documents and Seltingslbfllzgerald'Oesktop102775 Polyelhlene Geomembran Liner.docREV IS fON 0
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ENCANA OIL & GAS (USA) INC.
MIDDLE FORK COMPRESSOR STATION
PROJECT NO.: 4107-01
CONSTRUCTION SPECIFICATION 02775
POLYETHYLENE GEOMEMBRANE LINER
REV. DATE: JANUARY 19, 2005, PAGE 10
F. Welding is not to take place during precipitation, in the presence of excessive
atmospheric moisture (fog or dew) or excessive winds.) Care should also be
taken with extremes of hot or cold ambient temperature conditions that make
controlled welding temperatures difficult. Weather conditions are to be recorded
on the Daily Report.
G. All welds or seams on completion of the work shall be tightly bonded. Any
membrane area showing injury due to excessive scuffing, puncture, or distress
from any cause shall be repaired by replacement or covering with and additional
piece of synthetic membrane.
H. No air gaps or other defects shall be allowed within the seam area. Where defects
occur, the material shall be cut, and overlapped with an overlap -extrusion weld or
and overlap seam.
1. Welding or seaming of liner material on which visible moisture, dirt or foreign
debris are present will not be permitted.
J Construct anchor trenches and anchorages to structures as shown on the Drawings
and in accordance with approved Shop drawings. The trenches shall be set back a
minimum of three feet from the crest of any slope. After the flexible membrane
liner is places they shall be backfilled with excavated soil with water added if
appropriate to assist with compaction. Compaction shall be as set out on the
drawings with at least 85% of standard compaction required for liner anchorage.
Anchor trench backfilling shall be the responsibility of the membrane installer.
Care shall be taken in backfilling to ensure that the trench has not been softened
by standing water and that the backfill material contains no rocks etc. likely to
damage or tear the liner.
K. Lining installation shall be performed to avoid damage during high winds. Secure
the leading edge of the liner at all times with sandbags, rubber tires or other means
that are adequate to hold it down during high winds. Do not drive heavy
equipment on the liner during installation.
L. Make watertight seals to concrete and pipe penetrations with approved mechanical
seals in accordance with the Drawings and /or approved Shop Drawings.
M. Any liner replacement that is required due to damage from the geomembrane
installer's operations or negligence to adequately protect the liner during
installations will be made at no additional cost to the Owner.
N. All punctures, cuts, tears, severe abrasions ands similar damage or abuse suffered
by the liner material shall be required by patching, using the manufacturer's
recommended procedures and equipment for field welding, and to the satisfaction
of the Engineer.
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ENCANA OIL & GAS (USA) INC.
MIDDLE FORK COMPRESSOR STATION
PROJECT NO.: 4107.01
CONSTRUCTION SPECIFICATION 02775
POLYETHYLENE GEOMEMBRANE LINER
REV. DATE: JANUARY 19, 2005, PAGE 11
O. Patches shall be cut from flat, unwrinkled scraps of material being patched, and
shall be free of defects, and seams of any type. The patches shall be of sufficient
size to extend a minimum of 3 inches in all directions beyond the limits of any
puncture, cut, tear, abrasion, etc. The minimum sized patch shall be 8 inches.
Patches shall be neat in appearance with corner rounded to a minimum I -inch
radius. The contact surfaces shall be prepared and the patch seamed in accordance
with the specifications herein.
P. Patches shall be applied as specified above for lap joints. The parent material
shall be held flat in the area to be patched so as to provide an acceptable surface to
receive the patch.
Q.
Where specified on design drawings cover shall be placed on the geomembrane as
soon as is possible.
4.3 INSPECTION AND TESTING
A. The Engineer reserves the right of access for inspection of any or all phases of this
installation.
13. The geomembrane installer shall employ on-site physical non-destructive
continuous testing on all field welds or seams to ensure watertight homogeneous
seams.
Acceptable methods are:
1. Vacuum Chamber
2. Air Pressure
3. Spark Testing
C. A quality -control technician shall visually inspect each seam. Any area showing a
defect shall be marked and repaired in accordance with Engineer -approved
procedures. The locations and types of defect shall be indicated on the field
erection drawings.
D. A test weld or seam 3 feet long shall be run each day prior to Iiner welding or
seaming and under the same conditions as exist for the liner welding or seaming.
The test weld or seam shall be marked with date, ambient temperature, and
welding machine number. Samples of weld '/2 inch to 1 inch wide shall be cut
from the test weld or seam and pulled in shear and peel. The tensile yield strength
of the parent material. Random weld or seam samples shall be removed from the
installed sheeting at an average frequency of approximately 1 per 2000 feet of
weld or seam at locations designated by the Engineer.
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ENCANA OIL & GAS (USA) INC.
MIDDLE FORK COMPRESSOR STATION
PROJECT NO.: 4107-01
CONSTRUCTION SPECIFICATION 02775
POLYETHYLENE GEOMEMBRANE LINER
REV. DATE: JANUARY 19, 2005, PAGE 12
E. A hydrostatic test will be performed after physical testing of all field seams,
patches and boots. The Owner will supply water, piping and pond evacuation
should a leak be detected. The geomernbrane installer shall locate and repair all
leaks.
4.4 SITE FACILITIES AND CLEANUP
A. Protect excavations by methods required to prevent cave-in or loose soil from
falling into excavation.
B. Protect bottom of excavations and soil adjacent to and beneath foundation from
freezing.
C. The geomernbrane installer shall keep the area in which he is working clean of all
debris. Upon leaving any area after completion of work, installer shall remove
from the premises all rubbish and unused materials except materials furnished by
the Engineer.
PART 5 — QUALITY CONTROL
5.1 RECORDS
A. Before award, the geomembrane installer shall submit Quality Control
Procedures.
B. As constructed drawings shall be provided detailing all elements of the flexible
membrane liner layout including anchorage flexible membrane liner roll numbers,
location of all primary and secondary welds and all areas tested and repaired.
C. The finished installation shall be accepted by the superintendent as complete when
the following documents have been assembled.
1. Manufacturer's material tests certification.
2. Fabrication and Field installation QC/QA records as set out above.
D. The Engineer may also require a final site inspection prior to final acceptance of
the work. This inspection may give rise to a list of minor works and maintenance
items that shall not impede acceptance. Acceptance may be held back in the event
of major work items incomplete or major defects.
END
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5E Samuel Engineering, Inc.
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Samuel Engineering, Inc.
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5775 DTC Boulevard, Suite 200 Tel: 303-714-4840
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Orig./Lead Eng.:
Project Engineer Approval:
Project Manager Approval:
Client Approval:
CONSTRUCTION SPECIFICATION
SPECIFICATION 02777
GEOTEXTILE
FOR
Encana Oil & Gas (USA) Inc.
Middle Fork Compressor Station
Project No.: 4107-01
�.vV /Vim. l�l.l..b✓'i/
O
Date
Date
Date
Date
1-19-0.5
Rev. No.
A
By
Revisions
Issued for Bid
Approval Date
1-\(3 -0-S"
Engineering 4 Project Controls ♦ Estimating ♦ Construction Management
ENCANA OIL & GAS (USA) INC. CONSTRUCTION SPECIFICATION 02776
MIDDLE FORK COMPRESSOR STATION GEOTEXTILE
PROJECT NO.: 4107-01 REV. DATE: JANUARY 19, 2005, PAGE 1
PART 1 - GENERAL
1.1 SECTION INCLUDES
A. Supply of Geotextile.
13. Shop testing.
C. Preparation for shipment.
D. Installation of Geotextile.
L2 REFERENCE STANDARDS
A. ASTM D4354 Practice for Sampling of Geosynthetics for Testing.
B. ASTM D4491 Test Method for Water Permeability of Geotextiles by
Permittivity.
C. ASTM D4533 Test Method for Index Trapezoidal Tearing Strength of
Geotextiles.
D. ASTM D4632 Test Method for Grab Breaking Load and Elongation of
Geotextiles.
E. ASTM D4751 Standard Test Method for Determining Apparent Opening
Size of a Geotextile.
F. ASTM D4759 Test Method for Determining the Specifications
Conformance of Geosynthetics.
G. ASTM D4833 Test Method for Index Puncture Resistance of Geotextiles,
Geomembranes and Related Products.
H. ASTM D5261 Test Method for Measuring Mass per Unit Area of
Geotextiles.
1.3 SUBMITTALS
A. Prior to delivery of the geotextile, the fabricator shall submit certificates of
compliance with the requirements of the geotextile material properties and testing
methods specified herein.
B. The installer of the geotextile shall submit documentation of installer's
qualifications.
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ENCANA OIL & GAS (USA) INC. CONSTRUCTBN SPECIFICATION 02776
MIDDLE FORK COMPRESSOR STATION GEOTEXTILE
PROJECT NO.: 4107-01 REV. DATE: JANUARY 19, 2005, PAGE 2
1.4 QUALITY CONTROL
A. Manufacturer's Qualifications
The manufacturer of geotextile of the type specified or similar product
shall have at least five years experience in the manufacture of such
geotextile. In addition, the geotextile manufacturer shall have
manufactured at least 10,000,000 ft of the specified type of geotextile or
similar product during the last five years.
B. Installer's Qualificaitons
1. The geotextile installer shall be the Manufacturer, approved
Manufacturer's installer or a contractor approved by the Engineer to install
the geotextile.
2. The geotextile installer shall have a least three years experience in the
installation of the specified geotextile or similar product.
4. Seaming shall be performed under the direction of a Master Seamer (who
may also be the Field Installation Supervisor or Crew Foreman) who has
seamed a minimum of 3,000,000 ft2 of geosynthetics of the type specified
or similar product, using the same type of seaming apparatus to be used in
the current project. The Field Installation Supervisor and/or Master
Seamer shall be present whenever seaming is performed.
5. All seaming, patching, other welding operations, and testing shall be
performed by qualified technicians employed by the geotextile installer.
PART 2 - PRODUCTS
2.1 MATERIAL PROPERTIES
A. The non -woven needle punched geotextile specified herein shall be made from
polypropylene staple or continuous fiber.
B. The geotextile shall be manufactured from first quality virgin polymer.
C. The geotextile shall be able to withstand direct exposure to ultraviolet radiation
from sun for up to 15 days without any noticeable effect on index or performance
properties.
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ENCANA OIL & GAS (USA) INC. CONSTRUCTION SPECIFICATION 02776
MIDDLE FORK COMPRESSOR STATION GEOTEXTILE
PROJECT NO.: 4107-01 REV. DATE: JANUARY 19, 2005, PAGE 4
B. During shipment, the geotextile shall be protected from ultraviolet light exposure,
precipitation, mud, dirt, dust, puncture, or other damaging or deleterious
conditions. Lifting slings, non-destructive to the liner rolls, shall be provided for
each roll.
C. Materials shall be stored in such a manner that no surface irregularities or other
influences will apply point loads, abrasions, cuts or distortions or other forms of
damage to the rolls. Upon delivery to the job site, the geotextile installer shall
ensure that the geotextile rolls are handled and stored in accordance with the
manufacturer's instruction.
D. No more than three rolls of geotextile shall be stacked one on top of the other.
PART 4 — PREPARATION & INSTALLATION
4.1 PREPARATION
A. Surfaces shall be smooth and free of all rocks, stones, sticks, roots, sharp objects,
or debris or any kind. The surface should provide a firm, unyielding foundation
for the membrane with no sudden, sharp or abrupt changes or break in grade. No
standing water or excessive moisture shall be allowed. The geotextile installer
shall certify in writing that the surface on which the geotextile is to be installed is
acceptable before commencing work.
4.2 INSTALLATION
A. The geotextile shall be handled in such a manner as to ensure that it is not
damaged in any way. Should the contractor damage the geotextile to the extent
that it is no longer usable as determined by these specifications or by the Egineer,
the geotextile installer shall replace the geotextile at his own cost.
B. The geotextile shall be installed to the lines and grades as shown on the contract
drawings and as described herein.
C. The geotextile shall be rolled down the slope in such a manner as to continuously
keep the geotextile in tension by self weight. The geotextile shall be securely
anchored in an anchor trench where applicable, or by other approved or specified
methods.
D. In the presence of wind, all geotextiles shall be weighted by sandbags or approved
equivalent. Such anchors shall be installed during placement and shall remain in
place until replaced with cover material.
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ENCANA OIL & GAS (USA) INC. CONSTRUCTION SPECIFICATION 02776
MIDDLE FORK COMPRESSOR STATION GEOTEXTILE
PROJECT NO.: 4107-01 REV. DATE: JANUARY 19, 2005, PAGE 5
E. The geotextile installer shall take necessary precautions to prevent damage to
adjacent or underlying materials during placement of the geotextile. Should
damage to such material occur due to the fault of the geotextile installer, the latter
shall repair the damaged materials at his own cost and to the satisfaction of the
Engineer.
F. During placement of the geotextile, care shall be taken not to entrap soil, stones or
excessive moisture that could hamper subsequent seaming of the geotextile.
G. The geotextile shall not be exposed to precipitation prior to being installed and
shall not be exposed to direct sun light for more than 15 days after installation.
H. The geotextile shall be seamed using heat seaming or stitching methods as
recommended by the manufacturer and approved by the Engineer. Sewn seams
shall be made using polymeric thread with chemical resistance equal to or
exceeding that of the geotextile. All sewn seams shall be continuous. Seams
shall be oriented down slopes perpendicular to grading contours unless otherwise
specified. For heat seaming, fusion welding techniques recommended by the
manufacturer shall be used.
I. The geotextile installer shall not use heavy equipment to traffic above the
geotextile without approved protection.
J. The geotextile shall be covered as soon as possible after installation and approval.
Installed geotextile shall not be left exposed for more than 15 days.
K. Material overlying the geotextile shall be carefully placed to avoid wrinkling or
damage to the geotextile.
4.3 SITE FACILITIES AND CLEANUP
A. Protect excavations by methods required to prevent cave-in or loose soil from
falling into excavation.
B. Protect bottom of excavations and soil adjacent to and beneath foundation from
freezing.
C. Geotextile installer shall keep the area in which he is working clean of all debris.
Upon leaving any area after completion of work, the geotextile installer shall
remove from the premises all rubbish and unused materials except materials
furnished by the Engineer.
PART 5 — QUALITY CONTROL
5.1 Before award, the geotextile installer shall submit Quality Control Procedures.
END
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5775 DTC Boulevard, Suite 200 Tel: 303-714-4840
Englewood, Colorado 80111-3227 Fax: 720-482-8327
Orig./Lead Eng.:
Project Engineer Approval:
Project Manager Approval'.
Client Approval:
CONSTRUCTION SPECIFICATION
SPECIFICATION 02221
EXCAVATION
FOR
Encana Oil & Gas (USA) Inc.
Middle Fork Compressor Station
Project No.: 4107-01
371, /cL
Date
Date
Date
Date
-19
Rev. No. By
Revisions
Approval Date
A 54- Issued for Bid
Engineering t Project Controls ♦ Estimating • Construction Management
ENCANA OIL & GAS (U.S. INC. CONSTRUC., ,N SPECIFICATION 02221
MIDDLE FORK COMPRESSOR STATION EXCAVATION
PROJECT NO.: 4107-01 REV. DATE: JANUARY 19, 2005, PAGE 1
PART 1 - GENERAL
1.1 SECTION INCLUDES
A. Excavation for site grading.
B. Excavation for roads and drainage.
C. Excavation for building foundations.
D. Excavation for equipment foundations.
E. Excavation to underside of pier caps.
F. Removal from site, stockpiling, or placing excavated material in fill areas.
G. Removal of top soil.
1.2 RELATED SECTIONS
A. Specification 02223 — Backfilling.
PART 2 - PRODUCTS
2.1 MATERIAL
A. Top Soil: Soil containing organic material and debris. Unless otherwise directed
by the Engineer, the top soil is classified as the top 6 inches of soil.
PART 3 - EXECUTION
3.1 PREPARATION
A. The Contractor is responsible for laying out and staking all work from base lines
and survey reference points established by the Engineer.
13. The Contractor is responsible for staking known existing underground utilities.
C. Protect above and below grade utilities which are to remain.
D. Protect plant life and other features remaining as a portion of the final
landscaping.
E. Protect bench marks, structures, fencing, paving, and curbs from damage during
the excavation process.
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ENCANA OIL & GAS (U4 INC. CONSTRUC, .N SPECIFICATION 02221
MIDDLE FORK COMPRESSOR STATION EXCAVATION
PROJECT NO.: 4107-01 REV. DATE: JANUARY 19, 2005, PAGE 2
F. Prior to commencing excavation, the Engineer shall specify whether the material
to be excavated will be removed from site, stockpiled, or placed in fill sections.
G. Top soil shall be removed from the area prior to the commencement of
excavation.
H. The accuracy of all work, other than control established by the Engineer, shall be
the responsibility of the Contractor. The Contractor shall employ a qualified
surveyor acceptable to the Engineer, plus survey crew members to lay out the
work and establish all lines, levels and grades as may be required. Complete
records of all field work shall be kept by the Contractor in accordance with good
survey practice, and in standard field books. Field books shall be available to the
Engineer upon completion of the work.
I. Application for permission to bring explosives onto the site or any part of the
Owner's property shall be submitted to the Owner in writing by the Contractor
and shall provide the following information:
1. Details and location of work where explosives are proposed to be used.
2. The location of proposed explosives, magazines and the maximum
quantity and types of explosives to be stored.
3. Copies of current licenses and permits required by Government and other
authorities.
4. Security during transport to site as directed by local Government.
J. The Contractor shall store explosives in an approved magazine, within a curbed
area as directed by the Owner.
3.2 TOP SOIL REMOVAL
A. Top soils shall be removed from all areas designated on the drawings and all other
areas being subsequently excavated, filled, paved or concreted.
B. Top soil shall be stockpiled in a designated area on site, or removed from site as
designated by the Engineer.
3.3 TOLERANCES
A. Finish surfaces under gravel and bedding material shall be within 0.1 foot.
B. Finish surfaces directly under aggregate base shall be finished to a tolerance of
minus 1 -inch to plus zero -inch.
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ENCANA OIL & GAS (UE INC. CONSTRUC, N SPECIFICATION 02221
MIDDLE FORK COMPRESSOR STATION EXCAVATION
PROJECT NO.: 4107-01 REV. DATE: JANUARY 19, 2005, PAGE 3
C. Other areas shall be within 0.3 feet of the specified level and slopes shall be
maintained such that ponding cannot occur.
3.4 EXCAVATION
A. Underpin adjacent structures which may be damaged by excavation work,
including utilities and pipe chases.
B. Excavate subsoil required to accommodate building foundations, slabs -on -grade,
roadways, and site structures.
C. Excavate to working elevations for piling work.
D. Machine slope banks.
E. Excavation cut not to interfere with normal 45 degree bearing splay of foundation.
F. Grade top perimeter of excavation to prevent surface water from draining into
excavation. Irrespective of the source of water all excavations shall be kept dry by
appropriate dewatering techniques during the excavation and any subsequent
backfilling process. All damage caused by disposal of water shall be repaired at
the Contractor's expense.
G. Remove lumped subsoil, boulders, and rock up to 1/2 cubic yard measured by
volume. Larger material will be removed under Paragraph M.
H. Notify the Engineer of unexpected subsurface conditions and discontinue affected
work in area until notified by the Engineer to resume work.
I. Correct unauthorized excavation at no extra cost to Owner.
J. Backfill areas over -excavated by error of the Contractor in accordance with
Specification 02223 at the Contractor's expense.
K. Excavated material not used in fill sections shall either be stockpiled in areas
designated on site or removed from the site as directed by the Engineer.
L. Rock (defined in Section M) encountered during excavation shall be measured by
the Contractor and quantities shall be agreed upon by the Contractor and the
Engineer at the time of excavation. Measurement shall be to neat lines of
necessary excavation in accordance with the drawings. Additional excavation and
backfilling which results from over -blasting shall be performed at the Contractor's
expense and to the satisfaction of the Engineer.
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5E Samuel Engineering, Inc.
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ENCANA OIL & GAS (US /NC. CONSTRUC1 .J SPECIFICATION 02221
MIDDLE FORK COMPRESSOR STATION EXCAVATION
PROJECT NO.: 4107-01 REV. DATE: JANUARY 19, 2005, PAGE 4
M. For bulk excavation, rock shall be defined as either ground which cannot be
broken using a minimum 300 HP track -type tractor (Cat. D9L or equivalent) fitted
with a single tyne ripper, or material that cannot be removed with a 3/4 cubic yard
excavator when the equipment is operated and maintained by qualified and
experienced personnel in accordance with the equipment Manufacturer's
specifications and recommendations.
N. The sides of all excavations steeper than the natural angle of repose of the
material, when dry, shall be adequately supported by bracing or shoring, as
necessary, to prevent slides, slips, cave-ins, or danger to persons or structures.
O. Trenches for pipelines and services shall be excavated
15 FIELD QUALITY CONTROL
A. All finish surfaces that are underneath structures or pavement shall be proof rolled
with a loaded, 20 ton capacity truck or equivalent equipment approved by the
Engineer. Any region which, in the opinion of the Engineer, exhibits
unsatisfactory behaviour shall be removed as directed by the Engineer.
3.6 PROTECTION
A. Protect excavations by methods required to prevent cave-in or loose soil from
falling into excavation.
B. Protect bottom of excavations and soil adjacent to and beneath foundation from
freezing.
END
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