HomeMy WebLinkAbout1.2 Application Cont'd•
•
•
Geological and Soil Hazards Report
Hunter Ridge Energy Services LLC
Wolf Ranch Compressor Station
O\OLSSON
ASSOCIATES
OAProject No. 013-1093
760 Horizon Drive, Suite 102 1 Grand Junction, CO 81506 1 TEL 970.263.7800 1 FAX 970.263.7456
O\OLSSON
ASSOCIATES
GEOLOGIC AND SOIL HAZARDS REPORT
Introduction
Hunter Ridge Energy Services LLC (HRES) proposes to construct a Compressor Station Facility
to be located in the Northwest quarter of Section 24, Township 4 South, Range 96 West, of the
Sixth Principal Meridian, located north of the town of Parachute, and northwest of Interstate 70
and the Colorado River, in Garfield County, Colorado (Fig. V-1).
The proposed Wolf Ranch Compressor Station is located in the east central part of the
Piceance Basin, north of Parachute Creek on the Roan Plateau. The proposed location is
shown on a map provided (Fig. G-1).
Structural Geology
The proposed project is located in the eastern part of the Piceance Basin; an irregularly-shaped
elongated basin formed by tectonic forces associated with the Laramide orogeny that
downwarped the earth's crust as a result of the uplift of the Colorado Rocky Mountains. Areas
on all sides of the Piceance Basin have been uplifted by these same tectonic forces.
The Piceance Basin is the major structural geologic feature in the region. It is bound to the east
by the Grand Hogback monocline, the White River Uplift to the northeast, the Gunnison Uplift to
the south, the Uncompahgre Uplift to the southwest, the Douglas Creek Arch to the west-
northwest, and the axial basin uplift to the north (Grout and Verbeek, 1992).
Numerous small sub -parallel northwest trending folds have been identified in the Green River
Formation within the basin, including the Parachute Creek Dome, upon which the project site is
situated. No significant faulting is known in the project area, but some jointing may occur in
proximity to the folds. Some mapped joints are present about 2 miles north of the site, and in
proximity to the Grand Hogback, about three miles east of the site.
The Grand Hogback monocline, approximately 3 miles to the east, is a sinuous feature
comprised of Upper Cretaceous age bedrock of the Mesaverde Group, which includes the
Williams Fork Formation and the underlying Mancos Shale. The Grand Hogback forms part of
the boundary between two major physiographic provinces, the Colorado Plateau and the Rocky
Mountain foreland.
Hunter Ridge Energy Services, LLC
Wolf Ranch Compressor Station
May 2013
1
Olsson Associates
Grand Junction, CO
OA Project # 013-1093
Bedrock Geology
Two bedrock formations crop out, or are exposed in the vicinity of the proposed facility, the
(Eocene) Green River Formation and the (Eocene) Uinta Formation (formerly considered the
Evacuation Creek Member of the Green River Formation). The Green River Formation
underlies surficial deposits in most of the Roan Plateau uplands, and comprises the slopes and
terraces near the project site. Rocks of the Green River Formation comprise the main bulk of
the uplands of the Roan Plateau, and are exposed along the steep slopes and cliffs bounding
the Parachute Creek canyon, as well as Piceance Creek and its numerous tributaries.
The Green River Formation is comprised of lithified lacustrine sediment deposited in a group of
intermontane freshwater Eocene lake basins in Colorado, Utah, and Wyoming. Over 3,000 feet
of interbedded sandstone, mudstone, siltstone, limestone, dolomite, and marlstone were
deposited in the deep lake known as Lake Uinta in very fine annual layers called varves. The
Green River Formation is comparatively resistant to erosion, and comprises many of the high
cliffs and escarpments surrounding the Parachute Creek valley.
Three distinct Members of the Green River Formation are present near the project location. The
basal unit of the Green River Formation is the Douglas Creek Member, predominately
sandstone, limestone, and oolite from 430 to 470 feet in thickness, but is not exposed in the
project area. The Garden Gulch Member, which is approximately 700 feet thick, forms the
steep gray shale and marlstone cliffs and escarpments in the canyons below the project site.
The light and dark gray banded strata at the tops of the steep slopes and cliffs below the project
site are formed by the nearly 1,000 foot thick Parachute Creek Member, whose kerogen rich
marlstone includes the Mahogany Bench, and is the primary `oil shale' source within the Green
River Formation (Donnell).
The Uinta Formation consists of thin layers of sandstone, siltstone, and volcanoclastic rocks
deposited as ash -fall tuff and carbonate evaporite within Lake Uinta. Interbedding and
interfingering of the Uintah Formation and the Green River Formation have made identification
of the boundaries between the units subject to dispute by geologists for many years. The
project site lies upon soils primarily derived from the weathering of the Uinta formation.
Surficial Geology
The proposed Compressor Station is located on Holocene soils consisting of silt, sand, and clay
derived primarily from the weathering of the Uinta Formation. Erosional processes dominate in
this setting, as the weathered soils are drawn toward the surrounding canyons by precipitation,
snowmelt, and wind.
Geologic Hazards
The processes of erosion are the principal geologic hazards on the top of Roan Plateau, with
landslide processes being the most widespread hazard.
Hunter Ridge Energy Services, LLC
Wolf Ranch Compressor Station
May 2013
2
Olsson Associates
Grand Junction, CO
OA Project # 013-1093
•
•
The site for the Compressor Station is located in an area of Garfield County that has been
mapped by Garfield County for landslides or landslide potential, and no major slope hazards
have been identified in the area. Landslides and rockfalls occur in areas that are vulnerable to
slope failure due to a variety of reasons. Weak rocks, high relief, steep slopes, and locally
abundant moisture are all contributing factors in causing landslides.
Natural events, including intense rainfall, rapid snow melt, frost heaving, groundwater level
changes, and earthquakes, in addition to human activities, may trigger landslides and rockfalls.
Human activities which may cause failure include construction projects, the use of earth fill for
construction, cutting benches into hill slopes, and use of unlined pits or septic systems that
change water levels or add weight to the natural slope, increasing the shear stress.
No mapped flood prone areas are indicated by Garfield County or FEMA floodplain mapping,
though localized flash -flooding and seasonal inundation are not uncommon along the banks and
tributaries of Parachute Creek and Piceance Creek.
According to the Colorado Geological Survey, there have been earthquakes in the eastern part
of Garfield County near Glenwood Springs and New Castle, but there are no recorded
earthquakes or faults shown in the immediate vicinity of the proposed Compressor Station.
Soils
According to information prepared by the Natural Resources Conservation Service Soil Survey,
soils in the project area have been mapped as the Irigul-Starman channery loams (38), the
Parachute -Rhone loams (53), and the Rhone loam (61).
The lrigul-Starman channery loam (38) soils comprise the lower slopes below the proposed
Compressor Station as seen in figure S-1. The soils in this area occupy 5 to 50 percent slopes
at elevations ranging from 7,800 to 9,000 feet above mean sea level. The Irigul-Starman
channery loam is a shallow and well -drained soil that forms on mountain flanks. The capacity of
the most limiting layer to transmit water is moderately low to moderately high. Depth to water
table is more than 80 inches. The parent material is weathered marlstone and sandstone.
Parachute -Rhone loam (53) soils comprise the 5 to 30 percent slopes of the west side of the
ridge upon which a portion of the proposed Compressor Station will be constructed. The
Parachute Rhone is a moderately shallow, well -drained soil generally comprised of weathered
marlstone and sandstone. The capacity of the most limiting layer to transmit water is
moderately low to moderately high. Depth to water table is more than 80 inches.
The Rhone loam (61) soils comprise the 30 to 70 percent slopes of the east side of the ridge
upon which a portion of the proposed Compressor Station will be constructed. The Rhone is a
moderately shallow, well -drained soil generally comprised of weathered marlstone and
sandstone. The capacity of the most limiting layer to transmit water is moderately low to
moderately high. Depth to water table is more than 80 inches.
Hunter Ridge Energy Services, LLC
Wolf Ranch Compressor Station
May 2013
Olsson Associates
Grand Junction, CO
OA Project # 013-1093
Radon
Radon is a naturally occurring, odorless and colorless radioactive gas that is produced by the
radioactive decay of radioactive minerals present in the soils and bedrock. According to the
Colorado Department of Public Health and Environment (CDPHE), Colorado has a moderate to
high radon potential. Since the site is a facility that does not have buildings or an area that is
occupied throughout the work day, the potential presence of radon is not expected to represent
a geologic hazard or a significant worker exposure issue.
Garfield County Geographic Information System
Olsson personnel have reviewed the relevant county maps prepared by Garfield County's
Geographic Information System (GIS) Department that pertain to this study. According to the
Flood Plain Profile, the 100 -year flood plain is not shown to be in the vicinity of the proposed
Compressor Station.
According to the Slope Hazard Map provided by Garfield County, Colorado - GIS Department
website, no major slope hazard is indicated within the vicinity of the proposed Compressor
Station.
According to the Surficial Geology Map provided by Garfield County, Colorado — GIS
Department website no alluvial fan deposits are present in the project area, and no landslide,
mudflow, mudflow/slide areas are identified within the boundary of this geologic study.
Conclusions and Summary
According to the information provided by Garfield County, Colorado - GIS Department pertaining
to the location of the proposed Compressor Station, the overall geologic and soil hazards
appear to be low. With proper engineering, the proposed location should be safe for
construction and operation of the proposed Compressor Station.
Stormwater controls and Best Management Practices (BMPs) should take into consideration the
geology and soil types present at this location. These engineering controls and practices should
be used temporarily and permanently to divert stormwater away from the construction areas and
to prevent additional weight which could trigger landslide. Catchment basins should be sited
and designed so as not to add weight to potentially unstable areas.
William Monroe,
Associate Geologist
Hunter Ridge Energy Services, LLC
Wolf Ranch Compressor Station
May 2013
4
Olsson Associates
Grand Junction, CO
OA Project # 013-1093
•
•
References
Donnell, John R., 1961, U.S.G.S. Bulletin 1082-L, Tertiary Geology and Oil -Shale Resources of
the Piceance Creek Basin Between the Colorado and White Rivers Northwestern
Colorado.
Grout, Marilyn A. and Verbeek, Earl R., 1992, U.S.G.S. Bulletin 1787-Z, Fracture History of the
Divide Creek and Wolf Creek Anticlines and Its Relation to Laramide Basin -Margin
Tectonism, Southern Piceance Basin, Northwestern Colorado, 32 p.
Harman, Jerry B. and Murray, Donald J., 1985, Soil Survey of Rifle Area, Colorado, Parts of
Garfield and Mesa Counties, Colorado: U.S. Department of Agriculture, Soil
Conservation Service, in cooperation with the Colorado Agricultural Experiment Station,
149 p. two plates, and 20 map sheets.
Madole, Richard F. and Streufert, Randall K., 2003, Open -File Report 01-2 Geologic Map of the
Gibson Gulch Quadrangle, Garfield County, Colorado, Colorado Geological Survey,
Department of Natural Resources, Denver, CO, 18 p. and accompanying map.
Online References
Colorado Oil and Gas Conservation Commission http://cogcc.state.co.us/
Natural Resources Conservation Service - Soil Survey http://www.nres.usda.gov/
Garfield County
Slope Hazards: http://garfield-county.com/geographic-information-
syste ms/docu ments/6439291200422sIope haz. pdf
Soil Hazards: http://garfield-county.com/geoqraphic-information-
systems/documents/64335291200423soilhaz.pdf
Surficial Geology of Garfield County: http://garfield-county.com/geoqraphic-information-
systems/documents/geologic-hazards/24surfgeo.pdf
Hunter Ridge Energy Services, LLC
Wolf Ranch Compressor Station
May 2013
Olsson Associates
Grand Junction, CO
OA Project # 013-1093
Encana Oil & Gas (USA) Inc.
Parcel No. 191727400012
14 Wolf Creek Compressor Station
•-•-. Local Roads
• Affected Parcel
PROJECT NO 013-1093
DRAWN BY' 6KR
DATE. 05/21/2013
0 1 2 3 4 5
Miles
Vicinity Map
Wolf Ranch Compressor Station
Hunter Ridge Energy Services LLC
Garfield County, Colorado
760 HORIZON DRIVE, SUITE 102
OLSSON ® GRANTEL D JUFAX NCTION,800
CO81506
ASSOCIATES
FIGURE
V-1
f.Ranch Compressor Station
N
Tu Uinta Formation
lir.
® Wolf Creek Compressor Station Miles w� e
Local Roads 0 0.05 0.1 0.15 0.2 0.25
s
PROJECT NO 013-1093
DRAWN BY: BKR
DATE. 05/21/2013
Geology Map
Wolf Ranch Compressor Station
Hunter Ridge Energy Services LLC
Garfield County, Colorado
760 HORIZON DRIVE, SUITE 102
O■ SSON ■ ® GRANTEL 970 263 7800
D JUNCTION, CO FAX N 0.26374 6$1506
ASSOCIATES
FIGURE
G-1
Tu Uinta Formation
El Wolf Creek Compressor Station
4111'ti Local Roads
PROJECT NO 013-1093
DRAWN BY SKR
DATE 05/21/2013
N
Miles 1N-4.11>- E
0 0.05 0.1 0.15 0.2 0.25
s
Geology Map
Wolf Ranch Compressor Station
Hunter Ridge Energy Services LLC
Garfield County, Colorado
Oo LSSO
760 HORIZON DRIVE, SUITE 102
GRAND JUNCTION, CO 81506
TEL 970.263 7800
® FAX 970.263.7456
ASSOCIATES
FIGURE
G-1
iiWolf Creek Compressor Station
^. Local Roads
lkii,
PROJECT 140 013-1093
DRAWN BY BKR
DATE 05/21/2013
36 Irigul channery loam. 9-50% slopes
14 38 Irigul-Starman channery looms, 5-50% slopes
▪ 53 Parachute -Rhone looms. 5-30% slopes
K 61 Rhone loam, 30-70% slopes
C3 63 Silas loam, 3-12% slopes
Miles
0 0.05 0.1 0.15 0.2
Soils Map
Wolf Ranch Compressor Station
Hunter Ridge Energy Services LLC
Garfield County, Colorado
,6'
760 HORIZON DRIVE. SUITE 102
OLSSON GRAND
FAX 9 026374 681506
ASSOCIATES
FIGURE
S-1
1.1 Wolf Creek Compressor Station
FloodPlain
Local Roads
N
Miles w E
0 1.5 3 4.5 6 7.5
s
PROJECT NO
013-1093
DRAWN BY BKR
DATE 05/21/2013
Floodplain Map
Wolf Ranch Compressor Station
Hunter Ridge Energy Services LLC
Garfield County, Colorado
760 HORIZON DRIVE, SUITE 102
• OLSSON GRAND FJUNCTION, 26374 681506
ASSOCIATES
FIGURE
FP -1
Emergency Response Plan
Hunter Ridge Energy Services LLC
Wolf Ranch Compressor Station
O\OLSSON
ASSOCIATES
OA Project No. 013-1093
760 Horizon Drive, Suite 102 1 Grand Junction, CO 81506 1 TEL 970.263.7800 1 FAX 970.263.7456
Emergency Response Plan
encana.
natural gas
ethos
Quick
Reference
Guide
e hos
(Condensed copy for permit submittals)
Encana 's complete Emergency Response Plan
is on file with all applicable Fire Districts
and updates are provided as necessary
Updated Sep 2012 safe 3 6 G
encana.
na tura( gas
EMERGENCY RESPONSE PLAN
U.S.A. DIVISION
SRBU EMERGENCY RESPONSE
REPORTING TEMPLATE
Document No:
ERP -0042 SRBU
Revised By/Date:
Reviewed Dy/pate:
ERPComm/05.26.2010
Approved Ry/Dale:
ERPComm/05.26.2010
SBU:
Name of Event:
Date:
, 2010
Location:
Secured : ❑ Yes No
Tolvn, Stale:
1. Time of the call.
(Military Time)
2. What is the location of the
emergency? What has happened?
Location?:
What happened?:
3. Has anyone been hurt?
❑No ❑Yes
If so, Who?
How?
4. Who is the most senior Encana or
Company representative on location?
5. Who is the most senior Encana or
company representative on location who
will be the INCIDENT COMMANDER?
Do they have the proper Incident
Commander Training?
Incident Commander Trained?
No ❑ Yes ❑
6. Based on your assessment, what Level of
Emergency are you declaring?
Level 1 ❑ Level 2 ❑ Level 3 ❑
7. Who are you appointing as
OPERATION CHIEF?
8. Do not respond to a man down, or to the
emergency, until you have completed a
Risk Assessment, gained control and
understanding of the emergency, and can
assure life safety of the responders.
1 lave you completed a Risk Assessment?
N ❑ Y ❑
11ncontrolled Document When Printed
Page 1(11_'
•
encana.
natural gas
EMERGENCY RESPONSE PLAN
U.S.A. DI VISION
SRBU EMERGENCY RESPONSE
REPORTING TEMPLATE
Document No:
ERP -0042 SRBU
Revised B%7Datc:
Relit -eked By/Date:
tir PCotnnt105.26.2010
Approved By/Date:
13RPComm/05.26.2010
9. Are there FIRST
RESPONDERS on location?
No ❑Yes Time of Arrival:
Who arrived?
10. Have you set up an INCIDENT
COMMAND POST, if so, where?
No ❑Yes
Location of the Incident Command Center?
11. Based on your initial
assessment, what is your proposed
preliminary response strategy?
12. I will act as EMERGENCY
MANAGER, and activate thc EOC.
Plan on calling in to thc EOC, using
the Emergency Notification
1; y
Conference CaII Number, within
15 minutes.
Emergency Manager Activated at:
Emergency Operations Center Activated at:
We will be using EOC Conference Line:
EOC 1 and EOC 2: 1-877-445-2224
EOC 1: ❑Profile # 2421013 Password 111131
EOC 2: ❑ Profile # 2421(114 Password 10141
EOC 3: ❑ (20 or more incoming calls)
North American Dial -In: 1-866-400-1788
International Dial -1n: 5647) 427-2433
Conference code: 835 298 4806
Leader PIN: 2846
13. 1 will notify EXECUTIVE
LEAD, EHS OFFICER, and put
together the EMERGENCY
MANAGEMENT TEAM.
Executive Lead Notified:
No Yes ❑ Time:
EHS Officer Notified:
No ❑ Yes ❑ Time:
EMT Notified:
No ❑ Yes ❑ Time:
14. Start to put together a
local INCIDENT
COMMAND TEAM.
Incident
Deputy
Safety Officer:
Liaison
Public Information
Operations
Planning
Lo _ istics
Commander:
Incident Commander:
Officer:
Officer:
Section Chief:
Section Chief:
Section Chief:
Uncontrolled Document When Printed Page 2 of 2
Emergency Classification / Levels
EMERGENCY LEVELS
Definition / Criteria
Examples
(ma not re ect area -s ' eci is risks or threats)
LEVEL 1 - Onsite incidents where control of the hazard has been obtained but the potential
exists for the imminent loss of control due to deteriorating conditions.
o Immediate control of the
hazard has been established
using available resources,
however, conditions are
not improving and/or
resources are being
depleted.
o Injuries to onsite personnel
that are of a moderate
impact.
o Public safety is not
threatened, however there
is, or may be, a public
perception of moderate risk
to human health or the
environment.
o Environmental impacts are
confined to the site and
have limited potential to
impact offsite.
o All control and relief
systems are functioning
normally.
o Any controlled situation, outside of normal
operation conditions, where the ability to maintain
control using onsite resources is in question or
offsite resources are required to maintain control
such as a fire or explosion where imminent control
of the fire is probable.
o Injuries to personnel requiring offsite medical
attention.-
• Spills
ttention:Spills and releases that are contained onsite but have
the potential to extend offsite.
o Any incident requiring the advisory notification of
the public of a non -routine, onsite occurrence.
o Weather conditions (i.e., tornado) which may
threaten personnel and operations.
o Potential social / political unrest, labor disputes
Uncontrolled Document When Printed 3
LEVEL 2 - An incident where control of the hazard has been lost hut ww
and/or intermittent control of the hazard is possible.
imminent
o Control of the hazard has
been lost, however,
through the application of
available resources
intermittent control is
being obtained or hazard
control is imminent.
o Injuries to onsite personnel
that are ofa major impact.
o Public safety is not
threatened, however, there
is or may be a public
perception of significant
risk to human health or the
environment
o Environmental effects
extend offsite and are
resulting in minor or short-
term detrimental impacts.
o Some control and relief
systems are not
o . erational.
o Any uncontrolled hazard where the ability to regain
control using available resources is imminent or
intermittent control is being achieved using available
resources such as pipeline integrity failure.
o Injuries to personnel which have or are likely to
result in a lost time (beyond the day of the
occurrence) injury or short term health impact.
o Spills or releases that extend offsite and are, or will,
result in minor or short-term detrimental impacts.
o Any incident requiring the notification of the public
of a potential or imminent threat to human health or
the environment, such as or pipeline rupture.
o Some control and/or relief systems are not
operational.
o Imminent security threats, social / political unrest,
and labor disputes.
o Severe weather threats which threatens personnel
and/or operations.
o Overdue vehicle or aircraft.
LEVEL 3 - An incident where control of the hazard has been lost, imminent control
is not possible and public safety is, or has the potential, to be threatened.
o Control of the hazard has
been lost and regaining
control is not imminently
possible.
o Onsite personnel have
sustained injuries with a
serious impact.
o Public safety is being, or
has the imminent potential
to be, jeopardized.
o Environmental impacts are
significant, extend offsite
and have the potential to
result in long-term
environmental degradation.
o Key control and relief
functions have failed and
are not operating correctly.
o Any situation where control of a hazard has been
lost and regaining control is not imminently possible
such as loss of well control or failure of essential
well control equipment.
o Injuries to personnel which have or are likely to
result in permanent disability, long term health
impacts or death
o Any incident that has necessitated the evacuation or
sheltering of public such as or a catastrophic facility
fire or loss of process control.
o Spills or releases that have extended off site and are,
or likely to, result in significant and substantial
detrimental impact to the environment.
o Key control and relief systems are not operational.
o Act of terrorism, violence, social/political unrest.
o Severe weather impacting personnel and/or
operations.
o Overdue vehicle or aircraft, missing person.
irift•+( 4
ACTIVATION AND NOTIFICATION REQUIREMENTS
Receiving an Emergency CaII - Typical Notification
First Responder
to notify Incident
Commander
Level 1 - as soon
as possible
level 2 or 3 -
IMMEDIATELY
Report direct or via 24 Hr Emergency Number
1-877-386-2200
Encana local Incident Commander (IC), notified
(Reception / Answering Service will initiate call -down The first
person contacted establishes the incident Commander position,
until delegated)
Notify/dispatch Operator to Investigate
- Sr. Operator Or Representative establishes the First Responder position
- Two operators (buddy system) required when HIS > 10 ppm known to be
present
Incident Commander
Contact individual who
reported the incident to
advise outcome
First Responder
Initiate standard operating/
maintenance procedures
First Responder determines if the incident
involves an Encana facility?
NO
Yes
Incident Commander and
First Responder will assess the
incident.
Is it an Emergency?
Yes
Determine Level of Emergency
(see Emergency Levels in this Section)
NO
Incident Commander
Contact Operating
Company
Contact individual who
reported the incident to
advise outcome
First Responder
Provide assistance, if
possible, until relieved by
Operating Company
Maintain contact with
operating company and
Incident Commander until
relieved of duties
Identify Scope/Area affected (exposure zone) and:
- Activate ERP, nolify support personnel (field and Region), emergency services,
initiate regulatory notifications.
- First Responder establishes Command Post (CP) and initiates response actions.
- Incident Commander notifies authorities and contacts Encana's Emergency Manager
- Incident Commander contacts persons who reported incident to advise them of
outcome.
- RECORD YOUR ACTIONS!
Uncontrolled Document When Printed
5
First Responder Actions
Protect Yourself
O Approach the incident from upwind and uphill, if possible.
O Position vehicle far enough away from the release, allowing for a safe retreat, if necessary.
❑ Resist the urge to rush in, others cannot be helped if you are injured.
0 Avoid any contact with liquids, mists, sludge's, gases, vapors and smoke.
Sound the Alarm
0 Announce level of emergency.
0 Direct others to safe areas and alert other personnel.
Call for Help
O Notify control room, local office and or the on-call supervisor.
❑ Confirm emergency services has been dispatched.
0 Activate Emergency Response Plan.
Assume Command
0 Size up incident and make report.
0 Confirm location (if necessary).
O Situation found.
0 Make assignments (as necessary). Summon additional help and technical
assistance as required. Do not hesitate to summon assistance; it can always be
canceled if not needed.
0 Tactical considerations:
o Life safety, 0 Environmental protection, and
o Incident stabilization, o Property conservation.
0 Zoning:
o Utilize, with caution, the U.S. DOT Emergency Response Guidebook for
recommended actions if MSDSs are unavailable for released material,
o Establish hazard / hot zone (use fire line tape for hot line),
o Establish and mark warm zone (decontamination corridor), and
o Establish cold zone (set security line).
0 Immediately provide for proper decontamination of responders and/or injured.
O Transfer command (as necessary).
Assess Hazard
0 If immediate rescue is required, it should only be attempted when the rescuers
are fully aware of the risks posed to them, they are wearing protective clothing,
as required, utilizing a bare minimum number of personnel. If the hazards are
unknown or exceptionally life-threatening, the rescuer should consider waiting
until the situation has been assessed by the IC, SO, and the EHS/HazMat Unit.
Secure the Area
0 Restrict access to location or area.
0 Utilize law enforcement agencies (Emergency Alert System) and any other
available resources to evacuate or shelter in-place exposed victims.
Uncontrolled Document When Printed
6
Transfer of Command
The process of moving the responsibility for incident command from one Incident
Commander (IC) to another is called "transfer of command." It should be recognized that
transition of command on an expanding incident is to be expected. It does not reflect on
the competency of the current IC. The most important steps in effectively assuming
command of an incident in progress are:
Assessment & Briefing
O Perform assessment of incident situation with existing IC.
O Receive adequate briefing by the current IC in face-to-face meeting. The
briefing must cover the following items:
o Incident history (what has happened),
o Priorities and objectives,
o Current plan,
o Resource assignments,
o Incident organization,
o Resources ordered/needed,
o Facilities established,
o Status of communications,
o Any constraints or limitations,
o Incident potential, and
o Delegation of Authority.
Written Summary Report
O Incoming IC to receive written summary to assist in incident briefings. This
form contains:
o Incident objectives,
o A place for a sketch map,
o Summary of current actions,
o Organizational framework, and
o Resources summary.
Notice of Command Change
O Determine an appropriate time for transfer of command.
O Provide notice of a change in incident command to:
o Emergency Management Team (through dispatch),
o General Staff members (if designated),
o Command Staff members (if designated), and
o All incident personnel and agencies.
The incoming IC may give the out -going IC another assignment on the incident.
O There are several advantages of this:
o The out -going IC retains first-hand knowledge at the incident site, and
o This strategy allows the out -going IC to observe the progress of the incident
and to gain experience.
Uncontrolled Document \Vhcn Printed 7
•
•
Stormwater Management Plan
Hunter Ridge Energy Services LLC
Wolf Ranch Compressor Station
OLSSON
ASSOCIATES
OA Project No. 013-1093
760 Horizon Drive, Suite 102 1 Grand Junction, CO 81506 1 TEL 970.263.7800 1 FAX 970.263.7456
Date
Description
Initials
•
HUNTER RIDGE ENERGY SERVICES LLC
Permit Area
Permit Number
SWMP REVISIONS
•
Volume 1
HUNTER RIDGE ENERGY
SERVICES LLC
Master Stormwater Management Plan
Volume 1
HUNTER RIDGE ENERGY
SERVICES LLCMaster Stormwater
Management Plan
Prepared By: Kathy Vertiz
Reviewed By
HUNTER RIDGE ENERGY SERVICES LLC
•
•
•
Contents
1.0 Introduction 1-1
1.1 Site Specific Records 1-1
1.2 SWMP Administrator 1-2
2.0 Narrative Description of Master SWMP Permit Coverage Area 2-1
2.1 Sequence of Major Activities 2-1
2.1.1 Well Pads and Roads 2-1
2.1.2 Pipelines 2-3
2.1.3 Compressor Stations, Treatment Facilities, or Other Facilities 2-5
2.1.4 Man Camps and Helicopter Pads Error! Bookmark not defined.
2.2 Area Estimates 2-6
2.3 Description of Existing Topography and Soils 2-6
2.4 Description of Existing Vegetation 2-6
2.5 Identification of Potential Pollution Sources 2-9
2.6 Allowable Sources of Non-Stormwater Discharge 2-10
2.7 Receiving Water 2-10
2.8 Master SWMP Permit Area Map and Individual Stormwater Site Plans 2-10
3.0 Best Management Practices (BMPs) 3-1
3.1 Erosion, Drainage, and Sediment Control BMPs 3-1
3.2 Non-Stormwater Control BMPs 3-1
3.2.1 Materials Delivery and Storage 3-2
3.2.2 Material Handling and Spill Prevention 3-2
3.2.3 Vehicle Cleaning, Fueling, Maintenance, and Tracking Controls 3-2
3.2.4 Waste Management and Disposal 3-3
3.2.5 Dewatering 3-3
3.3 Stormwater Manual of BMPs 3-4
3.4 Phased BMP Implementation 3-5
4.0 Interim Reclamation and Final Stabilization 4-1
5.0 Inspection and Maintenance 5-1
5.1 Inspection Schedule 5-1
5.1.1 Minimum Inspection Schedule for active sites 5-1
5.1.2 Post -Storm Event Inspections at Temporarily Idle Sites 5-1
5.1.3 Completed Sites 5-1
5.1.4 Winter Conditions Inspections Exclusion 5-2
•
5.2 Performing Inspections 5-2
5.3 Maintenance 5-2
5.4 Documenting Inspections and Maintenance 5-3
6.0 Plan Revisions and Retention 6-1
7.0 Inactivation Notice 7-1
8.0 Signature 8-1
9.0 References 9-1
List of Appendices
Appendix A General Permit Application
Appendix B Revegetation Manual
Appendix C Existing Soil and Vegetation Data
Appendix D Master SWMP Permit Area Map
Appendix E Stormwater Manual of Best Management Practices (BMPs)
Appendix F Oil and Gas Construction Field Permit Certification NOTICE OF AMENDMENT OF PERMIT
COVERAGE and/or Final Stabilization Certification
Appendix G Inspection and Maintenance Report Form
Appendix H Inactivation Form
ii
•
1
1.0 Introduction
This Master Stormwater Management Plan (Master SWMP) satisfies the Colorado Department of Public
Health and Environment (CDPHE) Water Quality Control Division (WQCD) General Permit No. COR -030000
issued on May 31, 2007 for Stormwater Discharges Associated with Construction Activities (the Stormwater
Construction Permit). HUNTER RIDGE ENERGY SERVICES LLC has submitted a General Permit
Application to WQCD, a copy of which is provided as Appendix A.
This Master SWMP has been prepared in compliance with CDPHE WQCD, the Federal Clean Water Act
(CWA), and the National Pollutant Discharge Elimination Permit (NPDES) regulations found in 40 CFR,
Part 122.26 for stormwater discharges.
The objectives of this Master SWMP are to:
1. Identify all potential sources of pollution which may reasonably be expected to affect the quality of
stormwater discharges associated with construction activity within this Master SWMP permit area at
each project site;
2. Describe the practices to be used to reduce the pollutants in stormwater discharges associated with
construction activity within this Master SWMP permit area at each project site (also known as Best
Management Practices (BMPs)); and ensure the practices are selected and described in accordance
with good engineering practices, including the installation, implementation and maintenance
requirements;
3. Be properly prepared and updated to ensure compliance with the terms and conditions of the
Stormwater Construction Permit;
4. Work hand in hand with the Site Specific Records, as described in the following section; and
5. Serve as an education tool and comprehensive reference/guide to stormwater management for
inspectors, surveyors, engineers, and HUNTER RIDGE ENERGY SERVICES LLC employees and
contractors.
HUNTER RIDGE ENERGY SERVICES LLC construction activities fall under one of two types. Exploration
and Production (E&P) sites involve the construction of well pads, roads, and other facilities. Midstream
Services (also referred to as Gas Gathering) sites involve the construction of pipelines and compressor,
treatment, and other facilities. This Master SWMP is intended to address stormwater management for any
and all of these sites within this Master SWMP's Permit Coverage Area.
1.1 Site Specific Records
While Volume 1 of the Master SWMP contains all of the general permit area information, Volume 2 of the
Master SWMP contains all of the Site Specific Records including all Individual Stormwater Site Plans (Site
Plans), as discussed in Section 2.8, and all Inspection and Maintenance Reports (discussed in Section 5.4).
These Site Specific Records contain information specific to each site (each well pad, compressor station,
section of road/pipeline, etc.), including information on areas of disturbance, ecosystems and vegetation, soil
types, percent pre -disturbance vegetation, etc. Any changes to the design of individual sites or the BMPs
used at those sites will be noted on the Site Plans as those changes occur, and kept with the Site Specific
Records.
The Site Specific Records (Volume 2 of the Master SWMP) are bound separately from the body of this Master
SWMP; however, both are readily available during any inspection. Both the body of this SWMP (Volume 1)
and the Site Specific Records (Volume 2) comprise the entire SWMP, and go hand in hand in keeping
HUNTER RIDGE ENERGY SERVICES LLC in compliance with stormwater regulations. The Site Specific
Records will be kept at the Parachute Field Office during active construction and site inspections to ensure
1-1
accurate implementation, inspections, and maintenance of BMPs, as well as timely revisions to the Site
Specific Records.
1.2 SWMP Administrator
The SWMP Administrator is responsible for the process of developing, implementing, maintaining, and revising
this SWMP as well as serving as the comprehensive point of contact for all aspects of the facility's SWMP.
SWMP Administrators:
• Local Contact:
• Legal Contact:
Kathy Vertiz, Lead Surface Management
2717 County Road 215, Suite 100, Parachute, CO 81635
(970) 285-2626
Cindy Allen, Environmental Lead EH&S South Rockies
370 17th St. Suite 1700, Denver, CO 80202
(720) 876-5474
1-2
•
•
•
2.0 Narrative Description of Master SWMP Permit Coverage Area
Name of Permit Coverage Area: Hunter Ridge
Permit Number: COR03K022
Location of the Permit Coverage Area:
• County: Garfield/Rio Blanco County, CO
• City: Northwest of the Town of Parachtue
• Township/Section/Range:
o 3S97W — Sect. 8-36
o 3S98W — Sect. 23-26, 35, 36
o 4S95W — Sect. 19, 20, 23-36
o 4S96W— Sect. 5-8, 16-36
o 4S97W — Sect. 1-36
o 4S98W — Sect. 1, 2, 7-29, 35, 36
o 5S97W — 5-8, 18, 19
• Latitude/Longitude: Latitude 39.71139°N, Longitude 108.26293°W
Activities at the Permit Coverage Area will likely involve the construction of:
• Well pads
• Access roads
• Pipelines
• Compressor stations
• Treatment facilities
The above construction activities are only typical and may vary once construction begins. Up-to-date
information on the construction of well pads, roads, pipelines, etc. will be kept with the Site Specific Records
(Volume 2 of the Master SWMP).
2.1 Sequence of Major Activities
Site specifics, scheduling, surface use agreements, and/or other constraints can and/or may dictate changes
in construction sequences. Significant sequence changes are addressed in the Site Specific Records (Volume
2 of the Master SWMP). Specific details on the construction and maintenance of BMPs mentioned below are
provided in the Stormwater Manual of Best Management Practices (BMP Manual) as discussed in Section 3.3.
2.1.1 Well Pads and Roads
Construction activities for well pads and roads are generally completed in the following sequence:
Preconstruction:
2-1
1. Surveys. Topographic, vegetation, wildlife and archeology, as dictated.
2. Temporary BMP's. Where physical access is available, installation of terminal perimeter and
temporary sediment controls, such as wattles, silt fence and/or other as necessary. Actual BMPs
used for each site are shown on the Site Plans (discussed in Section 2.8) and kept with the Site
Specific Records (Volume 2 of the Master SWMP).
Construction:
3. Vegetation Clearing. When sufficient vegetation is available, the vegetation will be cleared/grubbed
and placed along the perimeter at the terminal discharge edges/points in a windrow and/or dam
beyond the edge of excavation and at any run -on -protection discharge points, and/or chipped or other
depending on landowner requirements.
4. Diversions and Retention Reservoirs. On well pads, after vegetation clearing and prior to topsoil
stockpiling, diversions are to be placed for run -on -protection (ROP) to prevent the greater
landscape from discharging onto the planned disturbance. Temporary sediment control BMPs shall
be placed at the discharge points of the ROP until permanent erosion controls can be installed
along the entire length of the ROP. Diversions are to be installed along the terminal discharge edge
inside of the vegetation windrows to convey site water/sediment to terminal discharge points where
rough retention reservoirs are to be installed. The retention reservoir outlets are to receive
temporary sediment control BMPs until permanent retention reservoirs and erosion, drainage, and
sediment BMPs can be installed.
5. Topsoil Stripping/Conservation. On access road and well pads, all ACCESSIBLE TOPSOIL is to
be removed from areas that are to be excavated, covered in subsoils, or turned into stabilized
unpaved surfaces. On well pads if the initial topsoil stockpile areas are insufficient to accommodate
the quantities of topsoil being generated, the excess is to be placed at either end of the subsoil
stockpile and segregated as much as possible. After major earthwork, grading, and
erosion/drainage/sediment controls are complete, any areas that can be identified for immediate
interim reclamation shall receive topsoil. On access roads, the topsoil is to be windrow on the access
road side of the vegetation windrow. After final grade has been established and/or pipeline installation
is complete and final grade has been established, the topsoil is to be spread on the fill slope of the
access road for immediate interim reclamation.
6. General Rough Grading. The access road site location will be graded to provide suitable surfaces
for vehicle traffic and/or building sites, and may be graded to establish surface drainage patterns such
as berms, retention and/or roadside ditches as necessary. The well pad site location will be graded to
establish surface drainage patterns such as berms, diversions and retention.
7. Facility Specific Grading. Individual facilities may require additional excavation to allow for
construction of foundations. Excess soil will typically be used in general site grading.
8. Foundation Construction. To support facilities (such as tanks, processing equipment, etc),
foundations will be constructed. Foundations may consist of select backfill, concrete spread footings,
or piles. Finished support elevations are to be installed twelve to eighteen inches (12-18") above
finished grade or the lowest point of the facility.
9. Facility Construction. Tanks, processing equipment, etc. will be constructed. All trench excavation
for underground infrastructure shall be compacted to prevent subsidence.
Interim Reclamation:
10. Gravel Surfacing. Areas used for access, parking, or materials staging will typically be gravel or
planned vegetated surface.
11. Reclamation of Unused Areas. Areas not needed for facilities, roads, parking, or materials staging
will generally be reclaimed. Salvaged topsoil will be spread and the vegetative seed mix will be
applied.
12. Application of Erosion Stabilization. Depending on terrain (e.g. steep slopes and drainage
crossings), additional measures may be applied to increase stability of the reclaimed area.
2-2
•
•
•
•
Final Reclamation:
13. Reclamation of Post -Operation Areas. When operation of well pad or road is no longer necessary,
the area will be decommissioned and all newly disturbed areas will be reclaimed. Any remaining
topsoil will be spread and the vegetative seed mix will be applied. This may occur after termination of
this permit and under the coverage of a new construction permit.
2.1.2 Pipelines
Construction activities for pipelines are generally completed in the following sequence:
Preconstruction:
1. Surveys. Topographic, vegetation, wildlife and archeology, as dictated.
2. Mark Right -Of -Way. The construction right-of-way (ROW) will be marked prior to construction with
laths and/or flagging. When possible, laths/flagging will be maintained throughout construction and will
not be removed until after reclamation activities have been completed.
3. Temporary BMPs. HUNTER RIDGE ENERGY SERVICES LLC's stormwater inspectors will
determine locations to install preconstruction temporary erosion control devices, per site specific BMP
installation plans and as necessary. HUNTER RIDGE ENERGY SERVICES LLC's contractor will
maintain the erosion control structures as directed by the stormwater inspectors throughout all phases
of construction, or until permanent erosion control measures are installed. Actual BMPs used for each
site are shown on the Site Plans, which are kept with the Site Specific Records (Volume 2 of the
Master SWMP).
Construction:
4. Vegetation Clearing. If necessary, vegetation will be cleared and placed in a windrow at the edge of
the work area to be used later in reclamation activities, removed from the construction site, or
burned/chipped depending on landowner requirements. Details for windrows are provided within the
Stockpiling BMP of the BMP Manual (discussed in Section 3.3).
5. Topsoil Stripping. All ACCESSIBLE TOPSOIL (from the entire width of the right-of-way) will be
removed and temporarily stockpiled along the up -hill side of the right-of-way (if terrain grades will
allow) for later use in reclamation activities.
6. General Grading. For pipeline segments that occur in relatively rough terrain, general grading will be
conducted to create a safe and workable ground surface. This is generally done to form a relatively
level work surface on steep cross slopes and to reduce slopes in undulating terrain (arroyo and wash
crossings). The site location will be graded to provide suitable surfaces for vehicle traffic and/or
building sites, and may be graded to establish surface drainage patterns, such as berms or roadside
ditches as necessary.
7. Trench Excavation. The trench needed for pipeline installation is almost always off -set in the ROW.
The surveyors may indicate the location of the trench on their pipeline lateral. Generally, the trench will
be located in the first third of the ROW. The remaining two thirds of the ROW will be used for working
space. The trench depth and width will vary with the number of pipes to be installed and the pipe
diameter. Generally, a 4 -foot deep trench will be excavated by track -mounted excavators. The ditch
will be excavated and sloped in accordance with OSHA specifications. The cover from top of pipe to
ground level will be a minimum of 36 inches. Where rock is encountered, tractor -mounted mechanical
rippers or rock trenching equipment may be used to facilitate excavation. The trench will be excavated
and subsoil material stockpiled within the confines of the approved right-of-way limits. Trench spoil will
be stored in a separate location from the previously segregated topsoil.
8. Pipe Installation. Pipe installation will include stringing, bending for horizontal or vertical angles in
the alignment, welding the pipe segments together, coating the joint areas to prevent corrosion, and
then lowering -in and padding.
9. Stringing. Pipe will be hauled by truck to the pipeline ROW. Each joint of pipe will be unloaded and
placed parallel to the ditch.
2-3
•
10. Bending. After the joints of pipe are strung along the ditch, individual joints of pipe may need to be
bent to accommodate horizontal and vertical changes in direction. Field bends will be made utilizing a
hydraulically operated bending machine. Where the deflection of a bend exceeds the allowable limits
for a field -bent pipe, factory (induction) bends will be installed.
11. Welding. After the pipe joints are bent, the pipe is lined up end-to-end and clamped into position. The
pipe is then welded in conformance with 49 CFR Part 192, Subpart E. "Welding of Steel Pipelines"
and API 1104, "Standard for Welding Pipelines and Related Facilities".
12. Welding Inspection. Welds will be visually inspected by a qualified inspector. Any defects will be
repaired or cut out as required under the specified regulations and standards.
13. Coating. To prevent corrosion, the pipe will be externally coated with fusion bonded epoxy coating
prior to delivery. After welding, field joints will be coated with fusion bond epoxy coating, tape and
primer, or shrink sleeves. Before the pipe is lowered into the ditch, the pipeline coating will be visually
inspected and tested with an electronic detector, and any faults or scratches will be repaired.
14. Lowering -In and Padding. Once the pipe coating operation has been completed, a section of the
pipe will be lowered into the ditch. Side -boom tractors may be used to simultaneously lift the pipe,
position it over the ditch, and lower it in place. Inspection will be conducted to verify: that minimum
cover is provided; the trench bottom is free of rocks, debris, etc.; external pipe coating is not damaged;
and the pipe is properly fitted and installed into the ditch. Specialized padding machines will be used
to sift soil fines from the excavated subsoil to provide rock -free pipeline padding and bedding. In rocky
areas, padding material or a rock shield will be used to protect the pipe. Topsoil will not be used to pad
the pipe. At the completion of lowering -in and padding activities, the contractor may install trench
breakers around the pipelines to minimize subsurface water flow. Details for trench breakers are
provided within the BMP Manual (discussed in Section 3.3).
15. Backfilling. Backfilling will begin after a section of the pipe has been successfully placed in the ditch
and final inspection has been completed. Backfilling will be conducted using a bulldozer, rotary auger
backfill, padding machine or other suitable equipment. Backfilling the trench will use the subsoil
previously excavated from the trench. Backfill will be graded and compacted, where necessary for
ground stability, by being tamped or walked in with a wheeled or track vehicle. Compaction will be
performed to the extent that there are no voids in the trench. Any excavated materials or materials
unfit for backfill will be utilized or properly disposed of in conformance with applicable laws or
regulations.
16. General Grading. If general grading was conducted to facilitate pipeline construction, these materials
will be replaced and graded to recreate the preconstruction topography.
Final Reclamation:
17. Cleanup. Cleanup activities will be initiated as soon as practicable after backfilling activities have
been completed. All construction -related debris will be removed and disposed of at an approved
disposal facility.
18. Subsoil and Topsoil Placement. Subsoil will be evenly re-contoured across the right-of-way to
pre -construction conditions. After the subsoil has been re -spread, the contractor will spread the
previously segregated topsoil back across the right-of-way. The topsoil will be evenly spread to
original contours.
19. Vegetation. After any remaining topsoil is spread, the vegetative seed mix will be applied. The area
will be revegetated according to private landowner Surface Use Agreements and/or according to the
BLM/Forest Service reclamation requirements. Details for revegetation are provided within the BMP
Manual (discussed in Section 3.3) and the Revegetation Manual (provided as Appendix B).
20. Application of Erosion Stabilization. Depending on terrain (e.g. steep slopes and drainage
crossings), additional measures may be applied to increase stability of the reclaimed area. Possible
erosion stabilization methods are provided within the BMP Manual (discussed in Section 3.3). Actual
locations and measures used are shown on the Site Plans, which are kept with the Site Specific
Records (Volume 2 of the Master SWMP).
2-4
•
•
2.1.3 Compressor Stations, Treatment Facilities, or Other Facilities.
Construction activities for compressor stations, treatment facilities, and other facilities are generally completed
in the following sequence:
Preconstruction:
1. Surveys. Topographic, vegetation, wildlife and archeology, as dictated.
2. Temporary BMP's. Where physical access is available, installation of terminal perimeter and
temporary sediment controls, such as wattles, silt fence and/or other as necessary. Actual BMPs
used for each site are shown on the Site Plans, which are kept with the Site Specific Records
(Volume 2 of the Master SWMP).
Construction:
3. Vegetation Clearing. When sufficient vegetation is available, the vegetation will be cleared/grubbed
and placed along the perimeter at the terminal discharge edges/points in a windrow and/or dam
beyond the edge of excavation and at any run -on -protection discharge points, and/or chipped or other
depending on landowner requirements.
4. Diversions and Retention Reservoirs. After vegetation clearing and prior to topsoil stockpiling,
diversions are to be placed for ROP to prevent the greater landscape from discharging onto the
planned disturbance. Temporary sediment control BMP's shall be placed at the discharge points of
the ROP until permanent erosion controls can be installed along the entire length of the ROP.
Diversions are to be installed along the terminal discharge edge inside of the vegetation windrows
to convey site water/sediment to terminal discharge points where rough retention reservoirs are to
be installed. The retention reservoir outlets are to receive temporary sediment control BMP's until
permanent retention reservoirs and erosion, drainage, and sediment BMP's can be installed.
5. Topsoil Stripping/Conservation. All ACCESSIBLE TOPSOIL is to be removed from areas that are
to be excavated, covered in subsoils, or turned into stabilized unpaved surfaces. If initial topsoil
stockpile areas are insufficient to accommodate the quantities of topsoil being generated, the excess
is to be placed at either end of the subsoil stockpile and segregated as much as possible. After major
earthwork, grading, and erosion/drainage/sediment controls are complete, any areas that can be
identified for immediate interim reclamation shall receive topsoil.
6. General Rough Grading. The site location will be graded to provide suitable surfaces for building
sites and vehicle traffic, and may be graded to establish surface drainage patterns, such as berms or
roadside ditches as necessary.
7. Excavation. Soil will be excavated to allow for the construction of foundations. Trenches will be
excavated for all underground piping and conduit. Excess soil will typically be used in general site
grading.
8. Foundation Construction. Foundations will be constructed to support facility buildings. Foundations
may consist of select backfill, concrete spread footings, piles, etc. On level surfaces such as small
compressor stations, finished support elevations are to be installed twelve to eighteen inches (12-18")
above finished grade and/or the lowest point of the facility. On other facilities with lager elevation
changes, the foundations are to be installed so they are not a low point and will not accumulate
standing water and/or per engineering specifications on the grading and drainage construction
documents.
9. Facility Construction. Buildings, tanks, processing equipment, etc. will be constructed. Utilities will
be installed.
Interim Reclamation:
10. Landscaping. If necessary, certain areas will be spread with topsoil and landscaped.
11. Gravel Surfacing. Areas used for access, parking, or materials staging will typically be gravel
surfaced.
2-5
•
12. Reclamation of Unused Areas. Areas not needed for facilities, roads, parking, or materials staging
will generally be reclaimed. Salvaged topsoil will be spread and the vegetative seed mix will be
applied.
13. Application of Erosion Stabilization. Depending on terrain (e.g. steep slopes and drainage
crossings) additional measures may be applied to increase stability of the reclaimed area. Possible
erosion stabilization methods are provided within the BMP Manual (discussed in Section 3.3). Actual
locations and measures used are shown on the Site Plans, which are kept with the Site Specific
Records (Volume 2 of the Master SWMP).
Final Reclamation:
14. Reclamation of Closed Facilities. When facilities are no longer necessary, the buildings may be
demolished, according to approved procedures. All construction materials will be removed and the
newly disturbed areas will be reclaimed. Any remaining topsoil will be spread and the vegetative seed
mix will be applied. This may occur after termination of this permit and under the coverage of a new
construction permit.
2.2 Area Estimates
The total Permit Coverage Area is estimated to be approximately 87,700 acres. The area that will undergo
clearing, excavation, and/or grading is estimated to be 50,000 acres. Because the area will vary over time,
these are only approximate estimates. This information is used to help determine the extent of control
measures (BMPs) needed.
2.3 Description of Existing Topography and Soils
The Permit Coverage Area consists of mesa tops and hillsides. Surface elevation ranges from approximately
6,500 to 9,000 feet. Annual precipitation within the Permit Coverage Area ranges from 5 to 15 inches. Soils
surrounding the Permit Coverage Area are distributed according to the major soil forming factors including
climate (effective moisture and temperature), parent material, topographic position, and slope. Soil
associations are found within the Permit Coverage Area, as shown on the soils figure within Appendix C. The
soils table within Appendix C provides a summary of the soil types found within the Permit Coverage Area.
A map and table summarizing the existing soils within the Permit Coverage Area (including permeability,
available water capacity, surface runoff, and erosion hazard of those soils) are provided in Appendix C.
2.4 Description of Existing Vegetation
The existing percent vegetative ground cover for each well pad, section of roadway/pipeline, etc. within the
Permit Coverage Area is estimated on each inspection and maintenance report form (discussed in Section
5.4), which is filed with the Site Specific Records (Volume 2 of the Master SWMP). A map indicating the
existing ecosystem types within the Permit Coverage Area is provided in Appendix C.
A description of the existing vegetation within each ecosystem (Mutel, 1992) is as follows:
1. Grasslands
a. Plains Grasslands. Plains grasslands are dominated by a mixture of blue grama (Chondrosum
gracile) and buffalograss (Buchloe dactyloides). Interspersed are occasional shrubs and bright
flowered forbs, most of which are members of the pea and sunflower families. Taller grass
species cover 10 to 25 percent of the ground of little -grazed, moist sites. Most are perennial
bunch -grasses up to three feet tall. Needle -and -thread (Stipa comata), sand dropseed
(Sporobolus cryptandrus), side -oats grama (Bouteloua curtipendula), western wheatgrass
(Pascopyrum smithii), Junegrass (Koeleria macrantha), and red three -awn (Aristida purpurea) are
other common species. Common forbs consist of prickly pear (Opuntia polyacantha), pasture
sage (Artemisia frigida), and yucca (Yucca glauca).
2-6
•
•
•
b. Mountain Grasslands and Meadows. Natural wet meadows and fens are dominated by
moisture -loving species, primarily members of the sedge and rush families. Spike-rush
(Eleocharis palustris), sedges, Canadian reedgrass (Calamagrostis canadensis), and tufted
hairgrass (Deschampsia cespitosa) are common. Natural dry meadows are filled with members of
the grass family. Bunchgrasses dominate at low elevations. Needle -and -thread, mountain muhly
(Muhlenbergia montana), Junegrass, blue grama, and species of wheatgrass and bluegrass are
common. Successional meadows contain a combination of weedy, introduced plants and plants
typical of dry, rocky slopes, such as common dandelion (Taraxacum officinale), golden banner
(Thermopsis divaricarpa), Colorado locoweed (Oxytropic sericea), mountain pussytoes
(Antennaria parvifolia), showy daisies (Erigeron speciosus), stonecrop (Sedum lanceolatum), and
some sedges (Carex ssp.). Mountain grasslands, where Thurber fescue (Festuca thurberi) and
mountain muhly were once the dominant grasses, are now largely dominated by blue grama,
Canada bluegrass (Poa compressa), foxtail barley (Critesion jubatum), and other species as a
result of grazing.
2. Riparian Ecosystems
a. Lowland Riparian Ecosystems. The lowland riparian ecosystem is dominated by the plains
cottonwood (Populus deltoidea ssp. occidentalis), the valley cottonwood (Populus deltoidea ssp.
wislizenii) and the peach -leaved willow (Salix amygdaloides). Common shrubs and herbaceous
plants include snowberry (Symphoricarpos occidentalis), sandbar willow (Salix exigua), bulrush
(Schoenoplectus lacustris), broad-leaved cat -tail (Typha latifolia), prairie cord -grass (Spartina
pectinata), and western wheatgrass.
b. Mountain Riparian Ecosystems. The mountain riparian ecosystem is dominated by quaking
aspen (Populus tremuloides), lanceleaf cottonwood (Populus X acuminata), narrowleaf
cottonwood (Populus angustifolia), and Colorado blue spruce (Picea pungens). Common shrubs
include alder (Alnus incana), river birch (Betula fontinalis), chokecherry (Padus virginiana),
common gooseberry (Ribes inerme), bush honeysuckle (Distegia involucrata), and mountain
maple (Acer glabrum). The lush riparian herbaceous understory includes forbs, grasses, sedges,
rushes, climbing vines, mosses, lichens, and liverworts. Weedy invaders are also common.
3. Shrublands. Shrub communities include semidesert shrublands found in dry lowlands, sagebrush
shrublands that occupy a wide range of elevation from the Colorado Plateau to high mountain valleys,
and montane shrublands other than sagebrush, characteristic of foothills and mountain regions.
a. Semidesert Shrublands. Common shrubs include Great Basin big sagebrush (Seriphidium
tridentatum), greasewood (Sarcobatus vermiculatus), rabbitbrush (Chrysothamnus), four -winged
saltbush (Atriplex canescens), and shadscale (Atriplex confertifolia). Common grasses and forbs
include galletagrass (Hilaria jamesii), blue grama, alkali sacaton (Sporobolus airoides), nodding
eriogonum (Eriogonum cernuum), copper mallow (Sphaeralcea coccinea), and prince's plume
(Stanleya pinnata).
b. Sagebrush Shrublands. Common shrubs include Great Basin big sagebrush, mountain big
sagebrush (Seriphidium vaseyanum), rabbitbrush, and serviceberry (Amelanchier alnifolia).
Common grasses and forbs include nodding eriogonum, copper mallow, and Indian Paintbrush
(Castilleja spp.).
c. Montane Shrublands. Common shrubs include mountain mahogany (Cercocarpus), Gamble
oak (Quercus gambelii), rabbitbrush, serviceberry, and skunkbrush (Rhus aromatica). Common
grasses and forbs include needle -and -thread, westem wheatgrass, copper mallow, and Indian
Paintbrush.
4. Pinyon -Juniper Woodlands. Pinyon -juniper woodlands consist of scattered Utah juniper
interspersed with big sagebrush. Pinyon pine is a minor component. Several other shrub species
also occur in this community, including snowberry, bitterbrush (Purshia tridentata), snakeweed
(Gutierrezia sarothrae), and serviceberry. In general, the sparse herbaceous layer consists of
graminoids such as cheatgrass (Anisantha tectorum), Kentucky bluegrass (Poa pratensis), western
wheatgrass, Indian ricegrass (Oryzopsis hymenoides), and squirreltail (Elymus elymoides). Forbs
2-7
include Tracy's thistle (Cirsium tracyi), mariposa lily (Calochortus nuttallii), western wallflower
(Erysimum capitatum), tapertip onion (Allium acuminatum), yarrow (Achillea lanulosa), stemless four -
nerve daisy (Tetraneuris acaulis), and sharpleaf twinpod (Physaria acutifolia). All of these are native
species, except for cheatgrass (an invasive, non-native annual species) and Kentucky bluegrass (a
widely naturalized non-native perennial species).
5. Montane Forests
a. Ponderosa Pine Forests. These forests are dominated by the ponderosa pine (Pinus
ponderosa) and the Rocky Mountain juniper (Saving scopulorum). Common shrubs and
herbaceous plants include the wax currant (Ribes cereum), blue grama, side -oats grama,
Junegrass, needle -and -thread, spike fescue (Leucopoa kingii), and sulphur flower (Eriogonum
umbellatum).
b. Douglas Fir Forests. These forests are dominated by the Douglas fir (Pseudotsuga menziesii).
Common shrubs and herbaceous plants include common juniper (Juniperus communis),
kinnikinnik (Arctostaphylos), mountain maple (Acer glabrum), mountain lover (Paxistima
myrsinites), heart -leaved arnica (Arnica cordifolia), and false Solomon's seal (Maianthemum spp.)
c. Aspen forests. Quaking aspen generally occur on north -facing slopes, and along drainage
swales. The aspen forest generally has an understory of Wood's rose (Rosa woodsii), Colorado
blue columbine (Aquilegia caerulea), showy daisy, Thurber fescue, white geranium (Geranium
richardsonii), common lupine (Lupinus argenteus), Fendler meadowrue (Thalictrum fendleri), and
American vetch (Vicia americana).
d. Lodgepole Pine Forests. These forests are dominated by the lodgepile pine (Pinus contorta).
Common shrubs and herbaceous plants include broom huckleberry (Vaccinium scoparium),
common juniper, kinnikinnik, sticky -laurel (Ceanothus velutinus), and heart -leaved arnica.
6. Subalpine Forests
a. Engelmann Spruce and Subalpine Fir. Engelmann spruce (Picea engelmannii) and subalpine
fir (Abies bifolia) trees are the dominant species in this type of forest, however lodgepole pine,
aspen, and sedge -bluegrass have been known to invade in areas which have been severely
burned. Understory growth is patchy and consists primarily of dense, low -growing blueberry
(Vaccinium myrtillus) and broom huckleberry bushes. Moisture -loving shrubs and herbs such as
broad-leaved arnica (Arnica latifolia) and heart -leaved arnica, Jacob's ladder (Polemonium
pulcherrimum), curled lousewort (Pedicularis racemosa), elk sedge (Carex geyeri), and lesser
wintergreen (Pyrola minor) are interspersed among the huckleberry.
b. Limber and Bristlecone Pine Woodlands. Limber pine (Pinus flexilis) and bristlecone pine
(Pinus aristata) trees are the only tree species that can invade this harsh ecosystem. Common
species among the sparse understory consist of common juniper, kinnikinnik, sticky -laurel,
Junegrass, stonecrop, Colorado locoweed, and whitlow -wort (Draba spp.). Lichens cover
exposed rock surfaces.
7. Alpine Tundra. Tundra vegetation consists of a low growth of shrubs, cushion plants, and small forbs
with brilliantly colored flowers, and of lush meadows of narrow -leaved sedges and grasses. These
plants cover gentle slopes and rock crevices filled with soil. Rock surfaces are partially covered with
more primitive plants — lichens and mosses. Shrubs consist of arctic willow (Salix arctica),
barrenground (Salix brachycarpa), planeleaf (Salix planifolia), and snow (Salix reticulate ssp. nivalis).
Common grasses are alpine bluegrass (Poa arctica), tufted hairgrass (Deschampsia cespitosa), and
kobresia (Kobresia myosuroides). The most common forbs are alpine avens (Acomastylis rossii),
American bistort (Bistorta bistortoides), marsh marigold (Psychrophila leptosepala), old -man -on -the -
mountain (Rydbergia grandiflora), moss pink (Silene acualis), rock selaginella (Selaginella densa), and
alpine sandwort (Lidia obtusiloba). All plant species are slow-growing perennials except for the rare
annual koenigia, a tiny member of the buckwheat family.
8. Urban Areas. Urban areas contain an increased density of human -created structures in comparison
to the areas surrounding it. Depending on the area, vegetation may account for anywhere between 20
2-8
•
•
•
and 70 percent of the total land cover, with the remaining portion being constructed materials. Types
of vegetation within urban areas may be any combination of the above ecosystems, and may include
areas of blue grass yards and parks.
9. Cropland. Cropland vegetation may consist of wheat, corn, soybeans, or a variety of many other
crops. Cropland may either lie fallow (bare of any crops) or contain crops at any stage of growth from
seedlings to mature plants.
2.5 Identification of Potential Pollution Sources
Potential sources of pollution are associated with all phases of the project from the start of construction though
interim reclamation and up until final stabilization has occurred. Final stabilization occurs when construction
activities have been completed and all disturbed areas have been either built on, paved, or a uniform
vegetative cover has been established with a density of at least 70 percent of pre -disturbance levels, or
equivalent permanent, physical erosion reduction methods have been employed.
The most common source of pollution during construction is sediment resulting from the erosion of recently
cleared and/or graded areas, such as cut/fill slopes and soil stockpiles. However, there may be many potential
pollution sources at any given site. The following types of conditions that might affect the potential for a
pollutant source to contribute pollutants to stormwater (CDPHE, 2007B) shall be evaluated:
• The frequency of the activity (i.e., does it occur every day or just once a month? can it be scheduled to
occur only during dry weather?);
• Characteristics of the area where the activity takes place (i.e., surface type (pavement, gravel,
vegetation, etc.), physical characteristics (site gradients, slope lengths, etc.));
• Ability of primary and secondary containment (fuel tanks, drum storage, etc.) at product storage and
loading/unloading facilities to prevent and contain spills and leaks;
• Proximity of product storage and loading/unloading facilities to waterways or drainage facilities;
• Concentration and toxicity of materials which may to be found in the site's stormwater runoff; and
• Contamination of storage facilities/containment with stored materials (i.e., used oil drums or tanks
coated with spilled oil).
The following items are potential sources of pollutants at the Hunter Ridge Energy Services LLC Each of
the potential sources of pollutants will be controlled using one or more of the following types of BMPs: Erosion
Controls, Drainage Controls, Sediment Controls or Non-Stormwater Controls. Descriptions and details for
each of these types of BMPs are provided in the BMP Manual (discussed in Section 3.3). Actual BMPs used
at each site are shown on the Site Plans (discussed in Section 5.4).
Construction:
• All Disturbed and Stored Soils: Erosion Controls, Drainage Controls, Sediment Controls.
• Vehicle Tracking of Sediments: Sediment Controls, Non-Stormwater Controls.
• Management of Contaminated Soils: Non-Stormwater Controls.
• Loading and Unloading Operations: Non-Stormwater Controls.
• Outdoor Storage Activities (Building Materials, Fertilizers, Chemicals, etc.): Non-Stormwater Controls.
• Vehicle and Equipment Maintenance and Fueling: Non-Stormwater Controls.
• Significant Dust or Particulate Generating Processes: Non-Stormwater Controls.
2-9
•
• Routine Maintenance Activities Involving Fertilizers, Pesticides, Detergents, Fuels, Solvents, Oils, etc.:
Non-Stormwater Controls.
• On -Site Waste Management Practices (Waste Piles, Liquid Wastes, Dumpsters, etc.):
Non-Stormwater Controls.
• Concrete Truck/Equipment Washing, Including the Concrete Truck Chute and Associated Fixtures
and Equipment: Non-Stormwater Controls.
• Dedicated Asphalt and Concrete Batch Plants: There will be no asphalt or concrete batch plants
located within the Permit Coverage Area of this SWMP.
• Non -Industrial Waste Sources Such as Worker Trash and Portable Toilets: Non-Stormwater Controls.
Interim/Final Reclamation:
• All Disturbed and Stored Soils: Erosion Controls, Drainage Controls, Sediment Controls.
• Vehicle Tracking of Sediments: Sediment Controls, Non-Stormwater Controls.
• Vehicle and Equipment Maintenance and Fueling: Non-Stormwater Controls.
• Significant Dust or Particulate Generating Processes: Non-Stormwater Controls.
• Non -Industrial Waste Sources such as Worker Trash and Portable Toilets: Non-Stormwater Controls.
2.6 Allowable Sources of Non-Stormwater Discharge
Allowable sources of non-stormwater discharge within the Permit Coverage Area include the following:
• Uncontaminated Springs. A spring is a point where groundwater flows out of the ground and is thus
where the aquifer surface meets the ground surface. Dependent upon the constancy of the water
source (rainfall or snowmelt that infiltrates the earth), a spring may be ephemeral (intermittent) or
perennial (continuous). No springs exist.
• Landscape Irrigation Return Flow. Irrigation return flow is that portion of water which returns to its
source after being used for crop irrigation. No irrigation return flows exist.
• Construction Dewatering. Construction dewatering is described and discussed in Section 3.2.5.
• Concrete Washout. Concrete washout is described and discussed in Section 3.2.4.
• Emergency Fire Fighting Water. Water used to put out any type of fire is considered an allowable
source of non-stormwater discharge.
No other non-stormwater discharges are allowed under the Stormwater Construction Permit. Other types of
non-stormwater discharges must be addressed in a separate permit issued for that discharge.
2.7 Receiving Water
Runoff from disturbed areas during construction will be controlled and/or routed through the use of one or
more BMPs, as described later in this plan, prior to being discharged to receiving waters. However, it may be
expected that runoff from certain areas will infiltrate into the earth and is not expected to contribute to receiving
waters.
In general, runoff from the Permit Coverage Area will flow into any one of the following drainages: tributaries
to Clear Creek and Parachute Creek ending in Colorado River to the South and tributaries to Piceance Creek
ending in White River to the North
2-10
•
•
Master SWMP Permit Area Map and Individual Stormwater Site Plans
An overall Master SWMP Permit Area Map is provided as Appendix D. This map is likely to change constantly
and will be updated at least annually. The Master SWMP Permit Area Map includes:
• Contours and elevations (topography) with existing drainage patterns;
• Locations and names of major surface waters such as streams, wetlands, irrigation ditches, canals,
etc...,
• Master SWMP permit area boundaries; and
• Construction area locations including roads, pipelines, well pads, compressor station facilities,
treatment facilities, water parks, and all other facilities.
Individual Stormwater Site Plans (Site Plans) of each site (well pad, access road, section of pipeline, etc.) are
provided with the Site Specific Records (Volume 2 of the Master SWMP). Separate Site Plans will be
developed for each phase of construction: preconstruction, construction, interim reclamation (if applicable),
final stabilization (if applicable) and final reclamation (if applicable). These Site Plans include:
• Construction site boundaries (this is the area expected to be disturbed by clearing, excavating,
grading, or other construction activities);
• Contours and elevations (topography) with existing and proposed drainage patterns;
• Limits of well pads and locations of reserve pits and well heads (if applicable);
• All areas of ground surface disturbance, including areas of cut and fill;
• Locations of all potential pollutant sources listed in Section 2.5 (including areas used for vehicle
fueling, the storage of materials, equipment, soil, or waste, etc...);
• Locations of all minor surface waters and all anticipated allowable sources of non-stormwater
discharge (including springs, dewatering, concrete washout, etc...);
• Locations of all existing and planned BMPs (including erosion, drainage, and sediment controls);
• Locations, names, and distances to streams, wetlands, irrigation ditches, canals, and other surface
waters; and
• The size, type and location of any outfall(s). If the stormwater discharge is to a municipal separate
stormwater system, the name of that system, the location of the storm sewer discharge, and the
ultimate receiving water(s).
Figures showing typical BMP locations along roadways and pipelines are provided as part of the BMP Manual
(discussed in Section 3.3).
2-11
•
•
w
3.0 Best Management Practices (BMPs)
A key component of this Master SWMP is employing BMPs to improve stormwater quality. Local factors will
be evaluated to determine what BMPs are suitable and practical at different locations. BMPs will be employed
in different combinations during construction activities and phases as conditions warrant. Due to the fact that
this Master SWMP is likely to cover more than one ecosystem (as described in Section 2.4), the selection of
BMPs (including type, quantity, sequence/combination, etc.) will vary at each site within the Master SWMP
Permit Area. Specific BMPs to be employed at each well pad, road, pipeline, or other facility are identified on
the Site Plans, which are kept with the Site Specific Records (Volume 2 of the Master SWMP).
3.1 Erosion, Drainage, and Sediment Control BMPs
The primary method for controlling erosion, drainage, and sediment transport consists of minimizing initial
disturbance of the soil and ground cover. However, many other methods can also be used. All stormwater-
related BMPs will fall under at least one of the following three types of controls:
• Erosion Control. Any source control practice that protects the soil surface and/or strengthens the
subsurface in order to prevent soil particles from being detached by rain or wind, thus controlling
raindrop, sheet, and/or rill erosion.
• Runoff Control. Any practice that reduces or eliminates gully, channel, and stream erosion by
minimizing, diverting, or conveying runoff.
• Sediment Control. Any practice that traps the soil particles after they have been detached and
moved by wind or water. Sediment control measures are usually passive systems that rely on
filtering or settling the particles out of the water or wind that is transporting them prior to leaving
the site boundary.
BMPs may also be classified as either structural or non-structural controls:
• Structural Control. Handles sediment -laden stormwater prior to it leaving each site. Structural
BMPs are used to delay, capture, store, treat, or infiltrate stormwater runoff. Some examples of
structural BMPs include sediment traps, diversions, and silt fences. Most Runoff Controls and
Sediment Controls can also be classified as Structural Controls.
• Non-structural Control. Reduces the generation and accumulation of pollutants, including sediment,
from a construction site by stabilizing disturbed areas and preventing the occurrence of erosion.
Some examples of non-structural BMPs include revegetation, mulching, and surface roughening.
These types of stabilization techniques are not only the most effective method for reducing soil loss,
but they are also normally the most cost effective due to low initial cost and reduced maintenance
requirements. Most, but not all, Erosion Controls can also be classified as Non-structural Controls.
The Site Plans, as mentioned previously and kept with the Site Specific Records (Volume 2 of the Master
SWMP), show the proposed locations of all erosion, drainage, and sediment control BMPs (both structural and
non-structural). Detailed descriptions, design criteria, construction specifications, and maintenance
information for all BMPs are provided in the BMP Manual (discussed in Section 3.3).
3.2 Non-Stormwater Control BMPs
Non-stormwater controls include general site and materials management measures that indirectly aid in the
minimization of water pollution. Types of pollution sources include, but are not limited to, litter, oil and grease,
hazardous material spills, and sediment.
3-1
3.2.1 Materials Delivery and Storage
The good housekeeping practices listed below will be followed on site during construction and operation:
• An effort will be made to store only enough product required for task completion.
• All materials stored on site will be stored in a neat and orderly manner in appropriate containers and,
where possible, under a roof or other enclosure, and/or within secondary containment areas to avoid
contact with stormwater.
• Products will be kept in their original containers with the original manufacturer's label.
• Substances will not be mixed with one another unless recommended by the manufacturer.
• Whenever possible, all of the product will be used before disposing of the container.
• Manufacturer's recommendations for proper use and disposal will be followed.
Additional information on material delivery and storage is available in the BMP Manual (discussed in
Section 3.3).
3.2.2 Material Handling and Spill Prevention
In addition to the material storage practices (listed in the previous section) that will be used to reduce the risk
of spills or other accidental exposure of materials and substance, the BMP Manual (discussed in Section 3.3)
will provide more detailed information on spill prevention and control. Furthermore, the Spill Prevention,
Control and Countermeasure (SPCC) Plan will be followed for the control of hydrocarbons. In general, spill
prevention and response procedures will include notification (CDPHE 24-hour spill reporting line — 877-518-
5608), clean-up with the use of spill kits and absorbents, and ensuring that materials and wash water cannot
discharge from the site, and never into a storm drain system or stream.
3.2.3 Vehicle Cleaning, Fueling, Maintenance, and Tracking Controls
As required by HUNTER RIDGE ENERGY SERVICES LLC master service agreement(s) and drilling
contract(s), contracting companies and/or vendors are required to service all vehicles and equipment prior to
entering HUNTER RIDGE ENERGY SERVICES LLC facilities. However, in the event maintenance
procedures are required at HUNTER RIDGE ENERGY SERVICES LLC facilities, all fluids transferred must
utilize secondary containment and drip pans to minimize a release of materials and properly dispose or recycle
spent materials in compliance with local, state, and federal guidelines.
While on site, equipment will be parked, serviced, and fueled within designated areas. Equipment fueling on
pipeline rights-of-way will be completed where necessary during active construction. Periodic inspections of
equipment and control procedures will be implemented. Selected equipment may be fueled in place using fuel
trucks. When necessary, equipment and machinery will be decontaminated at an on-site decontamination
area prior to removal from the construction area. Areas will be provided with adequate waste disposal
receptacles for liquid as well as solid waste.
Vehicle tracking of sediments is not expected to be a problem due to construction scheduling. Construction
vehicles will remain on site throughout earth -moving activities. All other vehicles remain in stabilized areas
and do not enter the construction area until that area is stabilized. However, applicable BMPs (such as
scheduling to minimize site access, stabilized construction entrances, vehicle cleaning, etc.) will be utilized if
sediment tracking does become a problem.
In addition to the typical practices listed above, the BMP Manual (discussed in Section 3.3) provides more
detailed information on vehicle cleaning, fueling, maintenance, and tracking controls.
3-2
•
•
•
3.2.4 Waste Management and Disposal
As required by HUNTER RIDGE ENERGY SERVICES LLC master service agreement(s) and drilling
contract(s), contracting companies and/or vendors are required to manage all waste generated by their
activities at HUNTER RIDGE ENERGY SERVICES LLC facilities in compliance with local, state, and federal
guidelines. HUNTER RIDGE ENERGY SERVICES LLC utilizes a periodic inspection program to ensure
waste management requirements are fulfilled and inspections are documented.
A few of the waste management procedures that will be followed include the following:
• Proper bins will be provided for trash collection and disposal in compliance with local, state, and
federal guidelines.
• Contaminated soils will be placed into a lined and bermed area. Samples of the impacted soil will be
collected and a complete characterization analysis will be performed. When applicable, the impacted
soil will be sent to a licensed disposal facility.
• The contractor will provide portable toilets. Sanitary waste will be regularly collected by a licensed
sanitary waste management contractor and disposed of in an approved manner.
• In the event that sediment is inadvertently transported off the construction site, it will be collected and
returned to the site and placed on the soil stockpile or spread over the construction pad area and
compacted.
On well pads and access roads, concrete washout is used as an interior conductor pipe ballast. Concrete
washout water can NOT be discharged to surface waters or to storm sewer systems without separate permit
coverage. However, discharge to the ground of concrete washout water from washing of tools and concrete
mixer chutes may be authorized by this permit, provided that (CDPHE, 2007a):
1. The source is identified in the SWMP;
2. BMPs are included in the SWMP to prevent pollution of groundwater; and
3. These discharges do not leave the site as surface runoff or to surface waters.
Locations where concrete washout activities take place are shown on the Site Plans.
Additional waste management procedures, including solid waste, hazardous waste, contaminated soil,
concrete washout, and septic and sanitary waste, are included in the BMP Manual (discussed in Section 3.3).
3.2.5 Dewatering
Dewatering refers to the mechanical removal of water from an excavation or other structure. Both
groundwater and stormwater may require dewatering during construction. Dewatering of pipelines at the
completion of hydrostatic testing will be required for most pipeline installations.
3.2.5.1 Groundwater Dewatering
Groundwater is very rarely encountered during the construction activities associated with either E&P sites or
Midstream Services. If groundwater is encountered, it is typically during construction of a pipeline across a
stream crossing. These pipelines are either bored under the stream or a flume is utilized.
Non-stormwater construction dewatering of groundwater can NOT be discharged to surface waters or to storm
sewer systems without separate permit coverage. However, discharges to the ground of water from
construction dewatering activities may be authorized by this permit, provided that (CDPHE, 2007a):
3-3
•
1. The source is groundwater and/or groundwater combined with stormwater that does not contain
pollutants in concentrations exceeding the State groundwater standards in Regulations 5 CCR 1002-
41 and 42;
2. The source is identified in the SWMP;
3. BMPs are included in the SWMP; and
4. These discharges do not leave the site as surface runoff or to surface waters.
Dewatered groundwater shall be pumped or diverted to a sediment control BMP prior to discharge to the
ground. Locations of groundwater dewatering, as well as any BMPs utilized, will be noted on the Site Plans as
soon as such dewatering occurs. Additional information on groundwater dewatering is provided in the BMP
Manual, discussed in Section 3.3.
3.2.5.2 Stormwater Dewatering
The discharge of pumped stormwater (not including groundwater or other non-stormwater sources) from
excavations, ponds, depressions, etc., to surface water, or to a municipal separate storm -sewer system is
allowed by the Stormwater Construction Permit, as long as the dewatering activity and associated BMPs are
identified in the SWMP (including location of the activity), and BMPs are implemented in accordance with the
BMP Manual, discussed in Section 3.3 (CDPHE, 2007c).
Stormwater that collects in open depressions or trenches during construction activities will be dewatered into
an existing sediment control, such as a detention pond, a sediment trap, or simply into a well -vegetated area to
percolate into the ground and catch suspended sediment. The quality, source, and location of dewatering, as
well as any BMPs utilized, will be noted on the Site Plans as soon as such dewatering occurs. Additional
information on stormwater dewatering is provided in the BMP Manual, discussed in Section 3.3.
3.2.5.3 Pipeline Dewatering
New Department of Transportation (DOT) pipelines are hydrostatically tested with water upon completion of
construction. Once the hydrostatic testing has been completed, dewatering of the pipeline must occur. This
will involve the insertion of a displacer, commonly referred to as a pig, in the pipeline. The discharge rate will
be regulated, and energy dissipation devices, and/or sediment controls will be used, as necessary, to prevent
erosion, streambed scour, suspension of sediments, or excessive stream flow. Locations on pipeline
dewatering, as well as any BMPs utilized, will be noted on the Site Plans as soon as such dewatering occurs.
Additional information on stormwater dewatering is provided in the BMP Manual, discussed in Section 3.3.
3.3 Stormwater Manual of BMPs
A Stormwater Manual of Best Management Practices (BMP Manual) is provided as Appendix E. The BMP
Manual has been prepared to provide HUNTER RIDGE ENERGY SERVICES LLC personnel, contractors,
and subcontractors with information on the proper selection, design, installation, and maintenance of BMPs to
manage oil and gas related stormwater and to meet federal and state SWMP implementation requirements.
The main objectives of the BMP manual are to:
• Serve as an easy-to-use guide for selecting, designing, installing, and maintaining BMPs.
• Function as a reference for construction plans and specifications.
• Ultimately lead to the avoidance of any net increase in off-site erosion and sedimentation of waters of
the U.S.
The BMPs within this BMP Manual are organized into four main types of controls for easy reference: Erosion
Controls, Runoff Controls, Sediment Controls, and Non-stormwater Controls. Each of these types of controls
has been discussed earlier in this section of the SWMP.
3-4
•
•
•
3.4 Phased BMP Implementation
Various BMPs will be implemented and maintained during different phases of the project. A description of
each phase is as follows:
• Preconstruction. The preconstruction phase involves the installation of BMPs (temporary and/or
permanent) around each site perimeter and at discharge points (such as vegetation buffers (no
installation required for this BMP), slash, wattles, diversions, sediment basins and reservoirs, etc...).
• Construction. The construction phase involves the stripping and stockpiling of topsoil, the excavation
and backfill for access roads, pipelines, and well pads, and the installation of additional BMPs
(preferably permanent BMPs) to control erosion and sedimentation (such as tracking topsoil piles and
the installation of roadside channels, culverts, diversions, etc...).
• Interim Reclamation. The interim reclamation phase primarily involves seeding of all disturbed areas
not needed during operation of the well pads. However, this phase also involves the installation of any
additional permanent BMPs that may be needed, as well as the continued maintenance and
inspections of all BMPs until final stabilization occurs. Final stabilization occurs once all surfaces are
built on, paved or graveled, and/or a uniform stabilized vegetative cover with a density of 70 percent of
pre -disturbance levels has been established or when an equivalent permanent, physical erosion
reduction method has been employed. A further explanation of final stabilization is provided as
section 4 of this plan.
• Final Reclamation. For pipelines, this phase involves seeding of all disturbed areas, and the
installation of any additional permanent BMPs that may be needed, as well as the continued
maintenance and inspections of all BMPs until final stabilization occurs. For other areas (roads, well
pads, facilities, etc...), this phase (which may occur after termination of this permit and under the
coverage of a new construction permit) occurs when operation of the area is no longer necessary. In
these cases, this phase will include the installation of any additional BMPs required during facility
decommissioning as well as the spreading of any remaining topsoil, the application of seed, and the
inspection/maintenance of all BMPs until final stabilization occurs.
Temporary controls, such as silt fencing, may be used to control sediment and erosion during preconstruction
and construction activities. Permanent controls, such as diversions and sediment traps, may also be used
during the initial phases of the project. However, only permanent controls will be used during interim
reclamation and final stabilization. Temporary controls may be converted into permanent controls (such as
revegetating a diversion) if needed. The primary control used during interim and final stabilization will be
revegetation. Seeding will occur as soon as possible after disturbance of an area is complete. If the seeding
is not successful, the area will either be reseeded or other controls will be put in place until reseeding can
occur.
3-5
•
•
•
4.0 Interim Reclamation and Final Stabilization
As soon as practicable after construction activities have been completed in a disturbed area, interim (for well
pads, or other facilities) or final (for roads and pipelines) reclamation will be started to prevent further erosion
of soil from that area. This typically occurs immediately upon completion of earthwork activities. All disturbed
areas (except for the surface of dirt roads, those portions covered by pavement or a structure, and those areas
used during operation of a well) will be stabilized with permanent controls. The most common measure used
to achieve final stabilization is revegetation. Mulching, erosion control blankets, surfacing with gravel or slash,
and/or other methods may also be used. Structural controls (such as diversions, berms, and sediment traps)
may be revegetated and used as permanent measures to control pollutants in stormwater discharges that will
occur after construction operations have been completed. Appendix E includes detailed information on each
of the previously discussed BMPs. In addition, a revegetation manual is provided as Appendix B, which
provides guidance as to possible methods and materials needed to accomplish revegetation on differing site
conditions. The specific BMPs used at each site are shown on the Site Plans which are kept with the Site
Specific Records (Volume 2 of the Master SWMP).
Final stabilization means that all ground surface disturbing activities at the site have been completed, and all
disturbed areas have been either built on, paved, or a uniform vegetative cover has been established with an
individual plant density of at least 70 percent of pre -disturbance levels, or equivalent permanent, physical
erosion reduction methods have been employed. For purposes of this permit, establishment of a vegetative
cover capable of providing erosion control equivalent to pre-existing conditions at the site will be considered
final stabilization. Areas developed as stabilized unpaved surfaces as needed for operation of the facility after
interim reclamation, will also qualify as "finally stabilized." This includes dirt road surfaces and the portions of
the well pad surfaces that cannot be revegetated due to operational necessity, but does not include slopes,
ditches, and other areas where revegetation is necessary. Stabilized unpaved surfaces will be prepared in
such a way as to prevent ongoing erosion issues.
Coverage under the Stormwater Construction Permit may be inactivated for any individual site or a
portion/section of that site (i.e. the access road to a well pad) when the area has attained final stabilization and
all temporary erosion and sediment control measures associated with that area have been removed. An area
will be considered finally stabilized when construction and interim reclamation is complete and when the above
final stabilization criteria have been met, even though the site may be disturbed again in the future for final
reclamation. However, future land disturbances that follow final stabilization and result in disturbance of one
acre or greater (such as final reclamation) will require new permit coverage at that time.
Upon final stabilization of any site or portion/section of a site, a signed certification sheet (provided in
Appendix F) will be placed into the Site Specific Records binder to replace the Site Plans and the inspection
and maintenance records for that area. However, the Site Plans and inspection reports shall be retained in a
separate location for a period of three years following final stabilization of the Permit Coverage Area. These
documents will be made available to WQCD or EPA upon request and at the time of inspection.
4-1
•
•
•
5.0 Inspection and Maintenance
Inspections and maintenance is an extremely important part of the Stormwater Construction Permit.
The Construction Manager will ensure that all stormwater management controls are constructed or applied in
accordance with governing specifications or good engineering practices. Experienced teams will be used for
construction. A first inspection will occur upon installation of the controls. In addition, all workers on the site
will be trained as to the location and use of the controls, especially those controls that will be disturbed as
construction proceeds across the site. The goal is to minimize the potential for inadvertent removal or
disturbance of BMPs and to prevent the off site transport of sediment and other pollutants.
5.1 Inspection Schedule
Inspections are required as soon as the first soil disturbance occurs at the site. Once final stabilization of the
site has occurred and the HUNTER RIDGE ENERGY SERVICES LLC inspector has filled out the final
stabilization certification sheet (see Section 4), inspections are no longer necessary. Specific information
regarding inspection schedules are provided in the following sections.
5.1.1 Minimum Inspection Schedule for active sites
The minimum inspection schedule applies to those sites under active construction, which includes the period
from when the ground is initially disturbed to when construction activity is completed, and also includes the
preparation of areas that will be revegetated for interim reclamation. During the Active Site period, a thorough
inspection of the site stormwater management system (which includes all utilized BMPs) must be conducted at
least every 14 calendar days. Also, post -storm event inspections must be conducted within 24 hours after the
end of any precipitation or snowmelt event that causes surface erosion.
There are three exceptions to the minimum inspection schedule which are described in detail within the next
three sections: post -storm event inspections at temporarily idle sites (inspections required within 72 hours after
a storm), inspections at completed sites (inspections required monthly), and inspections during certain winter
conditions (inspections may not be required). Any use of an exception is temporary, and does not eliminate
the requirement to perform routine maintenance due to the effects of a storm event or other conditions that
may impact BMP performance, including maintaining vehicle tracking controls and removing sediment from
impervious areas. Inspections, as described above, are required at all other times.
5.1.2 Post -Storm Event Inspections at Temporarily Idle Sites
Temporarily idle sites are those where there are no construction activities occurring following a storm event.
At such sites, post -storm event inspections must be conducted prior to restarting construction activities at the
site, but no later than 72 hours following the storm event, and the delay noted in the inspection report. Routine
inspections still must be conducted at least every 14 calendar days.
5.1.3 Completed Sites
Once construction is completed and the site has been prepared for interim or final stabilization (including
completion of appropriate soil preparation, amendments and stabilization practices), the site (or portion of the
site) is considered a Completed Site (for purposes of the stormwater permit). Note: only construction activities
that result in a disturbance of the ground surface must be completed. Construction activities that can be
conducted without disturbance of the ground surface, such as certain well completion activities, would not
prohibit a site from otherwise qualifying as a Completed Site. (Completed Sites still require permit coverage
until the final stabilization criteria have been met).
Completed Sites qualify for a reduced inspection schedule, as the potential for pollution is reduced if the site
has been adequately prepared and/or seeded. However, because slopes and other disturbed areas may not
be fully vegetated, erosion in these areas still occurs which requires maintenance activities such as regrading
5-1
•
and seeding of problem areas. As such, inspections must continue in order to address these situations.
During the Completed Site period, a thorough inspection of the site stormwater management system (which
included all utilized BMPs) is required at least once every month. The SWMP must be amended to indicate
those areas that will be inspected at this reduced frequency.
5.1.4 Winter Conditions Inspections Exclusion
Inspections are not required at sites where construction activities are temporarily halted, snow cover exists
over the entire site for an extended period, and melting conditions posing a risk of soil erosion do not exist.
This temporary exclusion is applicable only during the period where melting conditions do not exist, and
applies to the routine 14 -day and monthly inspections, as well as the post -storm -event inspections. It is typical
that when snow cover exists, even at a Completed Site, significant potential for erosion and BMP failure exists
when melting does finally occur. Therefore, the site should be prepared prior to snow cover to ensure it is as
stabilized as possible. Personnel should be prepared to perform site maintenance when melt -off occurs to
alleviate any potential problems. Inspection records (see Section 5.4) will document that winter conditions
exist and that inspections will be excluded.
5.2 Performing Inspections
Inspections will be conducted by qualified personnel on the following areas:
• All vegetated areas until 70% of pre -disturbance vegetation levels are reached.
• All BMP measures identified in this document.
• Construction site perimeter and discharge points.
• All disturbed areas.
• Areas used for storage of material/waste that are exposed to precipitation.
• Other areas determined to have a significant potential for stormwater pollution, such as demolition
areas or concrete washout locations, or locations where vehicles enter or exit the site.
These areas will be inspected to determine if there is evidence of, or the potential for, pollutants leaving the
construction site boundaries, entering the stormwater drainage system, or discharging to state waters. All
BMPs will be evaluated to determine if they still meet the design and operational criteria in the SWMP and if
they continue to adequately control pollutants at the site. Any BMPs not operating in accordance with
Appendix E of this SWMP will be repaired or replaced (according to the following section) and the Site Specific
Records will be updated.
5.3 Maintenance
Maintenance activities will ensure that all control measures are functioning at optimum levels and that all
procedures and techniques will be in proper working order during a runoff event or spill condition. Any
maintenance, repairs, or replacements deemed necessary after required inspections will be corrected as soon
as possible (if not immediately), to minimize the discharge of pollutants. Certain maintenance procedures may
take a short period of time to make sure that all the proper safety precautions are in place, such as a "one call"
for utilities, if the maintenance involves excavation of sediment located above a buried pipeline.
Maintenance will include, but is not limited to:
• Pickup or otherwise prevention of litter, construction debris, and construction chemicals from
becoming a pollutant source prior to anticipated storm events.
• Removal of sediment from silt fences, sediment traps, and other sediment controls.
• Reseeding of any bare spots where vegetation has failed to establish.
5-2
1
•
• Repairs and/or adjustments to any erosion and sediment control that is deteriorating or found to be
performing inadequately.
Detailed maintenance requirements for each BMP are identified in Appendix E.
When maintenance is required, the following process will typically be followed:
1. Perform inspections according to the minimum inspection schedule discussed in Section 5.1.
2. Note the need for maintenance on the inspection and maintenance report form.
3. If necessary, collect the additional materials and/or resources needed to perform the maintenance
activity.
4. Perform maintenance and note the date performed on the inspection and maintenance report form.
5. Re -inspect the area to ensure compliance.
5.4 Documenting Inspections and Maintenance
The HUNTER RIDGE ENERGY SERVICES LLC will document inspection results, maintenance activities, and
maintain a record of the results for a period of 3 years following expiration or inactivation of permit coverage. A
typical inspection and maintenance report form is provided in Appendix G. Although the site may have a
phased construction schedule, all construction areas may be inspected at the same time and on one form.
Each well pad, road, pipeline, or other facility which is inspected shall be clearly noted on the inspection form.
Inspection reports will include the following:
• Date of inspection, name of inspector, and title of inspector
• The area inspected (Site ID), type of area (well pad, access road, pipeline, etc.), phase of construction
(preconstruction, construction, etc.), and type of inspection (active, completed, etc.)
• Site specific information including disturbed area, soil type(s), ecosystem/vegetation type(s), receiving
waters, etc.
• Vegetation observations including the percent pre -disturbance vegetation and whether or not
vegetation growth has reached 70% of pre -disturbance levels
• Specific inspection requirements (all BMPs and areas of potential pollutant sources)
• Observed conditions including:
• Location(s) of discharges of sediment or other pollutants from the site
• Location(s) of BMPs that need to be maintained
• Location(s) of BMPs that failed to operate as designed or proved inadequate for a particular
location
• Location(s) where additional BMPs are needed that were not in place at the time of inspection
• Description and date(s) of corrective action(s) taken, and measures taken to prevent future violations
• Changes necessary to the SWMP
A hand drawn Site Plan shall be included, if necessary, to show the location(s) of any observed condition (as
listed above).
After adequate corrective action(s) has been taken and recorded, or where a report does not identify any
incidents requiring corrective action, the report will contain a signed statement indicating the site is in
compliance with the permit to the best of the signer's knowledge and belief.
5-3
All completed inspection and maintenance report forms (a blank copy of which is included in Appendix G) are
kept with the Site Specific Records (Volume 2 of the Master SWMP).
-4
•
•
•
6.0 Plan Revisions and Retention
When BMPs or site conditions change, the Master SWMP (Volume 1) and/or the Site Specific Records
(Volume 2) will be amended to accurately reflect the actual field conditions. Examples include, but are not
limited to, removal of BMPs, identification of new potential pollutant sources, addition of BMPs, modification of
BMP installation/implementation specifications or maintenance procedures, and changes in items included in
the Site Plans. Changes to the Master SWMP (Volume 1) shall be noted on the SWMP Revisions log at the
front of this plan. Changes to individual site conditions will be noted in the Site Specific Records (Volume 2) on
the applicable inspection and maintenance report form. All changes in Volume 1 and Volume 2 shall be made
prior to actual changes in the site conditions, except for responsive SWMP changes, which shall be made
immediately after changes are made in the field or as soon as practical, but in no case more than 72 hours
after the change(s) in BMP installation and/or implementation occur at the site that require development of
materials to modify the SWMP. At a minimum, the Master SWMP will be updated annually.
The Master SWMP and the Site Specific Records will be retained at the Parachute Field Office during active
construction and site inspections to ensure accurate implementation and maintenance of BMPs, and required
revisions. These documents will be retained for a period of three years following final stabilization of the
Permit Coverage Area. These reports will be made available to WQCD or EPA upon request and at the time
of inspection.
6-1
•
•
•
7.0 Inactivation Notice
When all disturbed areas associated with the Stormwater Construction Permit have reached "final stabilization"
(as described in Section 4), all temporary erosion and sediment control measures have been removed, and all
components of the SWMP are complete, the area no longer requires coverage under the permit terms. At that
time, HUNTER RIDGE ENERGY SERVICES LLC will submit an Inactivation Notice that closes this permit to
the WQCD upon final stabilization of all areas covered by the permit. A blank copy of this form is included in
Appendix H of this document.
Upon receipt of the Inactivation Notice, the WQCD will provide written confirmation that coverage under this
permit has been terminated. This historical documentation will be maintained at the Parachute Office for a
period of at least three years following termination of permit coverage.
7-1
8.0 Signature
"I certify under penalty of law that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gathered and
evaluated the information submitted. Based on my inquiry of the person or persons who manage the system,
or those persons directly responsible for gathering the information, the information submitted, to the best of my
knowledge and belief, is true, accurate, and complete. I am aware that there are significant penalties for
submitting false information, including the possibility of fine and imprisonment or knowing violations."
Printed name Title
Signature Date
Printed name Title
Signature Date
8-1
•
1
9.0 References
CDPHE, 2007a. CDPS General Permit, Authorization to Discharge under the Colorado Discharge Permit
System. Colorado Department of Public Health and Environment. Water Quality Control Division.
Issued May 31, 2007.
http://www.cdphe.state.co.us/wq/PermitsUnit/stormwater/SWConstructionPermit.pdf
CDPHE, 2007b. General Permit Application and Stormwater Management Plan Preparation Guidance.
Colorado Department of Public Health and Environment. Water Quality Control Division. Revised
July, 2007. http://www.cdphe.state.co.us/wq/PermitsUnit/stormwater/SWConstructionApplication.pdf
CDPHE, 2007c. Rationale. Colorado Department of Public Health and Environment. Water Quality Control
Division. 2007.
http://www.cdphe.state.co.us/wq/PermitsUnit/stormwater/SWConstructionRationale.pdf
CDPHE, 2007d. Stormwater Fact Sheet — Construction at Oil and Gas Facilities. Colorado Department of
Public Health and Environment. Water Quality Control Division. Revised July, 2007.
http://www. cdphe.state.co. us/wq/PermitsU nit/stormwater/OGfactsheet. pdf
Mutel, C.F., and Emerick, J.C., 1992. From Grassland to Glacier - The Natural History of Colorado and the
Surrounding Region.
USEPA, 1990. NPDES Stormwater Regulations, 40 CFR Parts 122.26. U.S. Environmental Protection
Agency.
9-1
Appendix A
CDPS General Permit Application
Final Permit, CDPS Certification
•
Appendix B
Revegetation Manual
•
Appendix C
Existing Soil and Vegetation Data
•
Appendix D
Master SWMP Permit Area Map
•
•
Appendix E
Stormwater Manual of Best Management Practices (BMPs)
•
•
Appendix F
Final Stabilization Certification
•
•
Appendix G
Inspection and Maintenance Report Form
•
Appendix H
Inactivation Form
rWolf Creek Compressor Station
• Oil and Gas Faci:ifics
- 1,500 fl radial circle
Local Roads
PROJECT NO.
013-1093
DRAWN BY BKR
DATE. 05/21/2013
Adjacent Uses Map
Wolf Ranch Compressor Station
Hunter Ridge Energy Services LLC
Garfield County, Colorado
Miles
0.2 0.25
.4 A.
760 HORIZON DRIVE, SUITE 102
O LSSO N o GRANTEL D JUFAX 97 0263 780061506
ASSOCIATES
FIGURE
AU -1
Wolf Ranch Compressor Station
ffilWolf Creek Compressor Station
0 FloodPlain
ilir...,
Local Roads
PROJECT NO. 013-1093
DRAWN BY BKR
DATE. 05/21/2013
N
Miles W E
0 1.5 3 4.5 6 7.5
s
Floodplain Map
Wolf Ranch Compressor Station
Hunter Ridge Energy Services LLC
Garfield County, Colorado
760 HORIZON DRIVE, SUITE 102
O ■ SSON ® GRAND 70970263370 081506
ASSOCIATES
FIGURE
FP -1
r
n' 7l _
`,ter
•
/
0/7
'7 --- y
f
fl
/. I ,
f
�
„
;,/,, T4S R95Wy////
I {/
/ 0
`!t
1 Wolf Creek Compressor Station N
MonitoringWells
Q 1 mile radius circle
Local Roads
0
0.25 0.5 0.75 1
Miles
PROJECT NO
013-1093
DRAWN BY
BKR
DATE
05/21/2013
Groundwater Map
Wolf Ranch Compressor Station
Hunter Ridge Energy Services LLC
Garfield County, Colorado
760 HORIZON DRIVE, SUITE 102
A ■ S5 A N ® GRAND JUN,263
CTION, CO081506
TEL FAX
ASSOCIATES
FIGURE
GW -1
Wolf Creek Compressor Station G.3 36 Irigul channery loam, 9-50% slopes
K 38 Irigul-Starman channery loams, 5-50% slopes
'"•-• Local Roads IK 53 Parachute-Rhoneloams.5-30%slopes Miles
IK 61 Rhone loam, 30-70% slopes 0 0.05 0.1 0.15 0.2
63 Silas loam. 3-12% slopes
PROJECT NO: 013-1093
Soils Map
DRAWN BY BKR
DATE 05/2112013
Wolf Ranch Compressor Station
Hunter Ridge Energy Services LLC
Garfield County, Colorado
760 HORIZON DRIVE. SUITE 102
OLSSON ^J GRANDTEL FJUNCTION,
970UIO26N,7800
05681506
ASSOCIATES
W4 E
FIGURE
S-1
U Wolf Creek Compressor Station
'.s Local Roads
.0-,..- Intermittent Stream
Perrenial Stream
Miles
0 0.15 0.3 0.45 0.6
N
PROJECT NO. 013-1093
DRAWN BY: BKR
DATE 05121/2013
Surface Water Map
Wolf Ranch Compressor Station
Hunter Ridge Energy Services LLC
Garfield County, Colorado
760 HORIZON DRIVE, SUITE 102
OLSSON ® GRAND TELFAX 770JUNC72637456 ION, CO 81506
ASSOCIATES
FIGURE
SW -1
Wolf Ranch Compressor Station
Encana Oil & Gas (USA) Inc.
Parcel No. 191727400012
Wolf Creek Compressor Station
•` \ Local Roads
Affected Parcel
0
2
3
4
5
Miles
PROJECT NO 013-1093
DRAWN BY BKR
DATE 05/21/2013
Vicinity Map
Wolf Ranch Compressor Station
Hunter Ridge Energy Services LLC
Garfield County, Colorado
760 HORIZON DRIVE, SUITE 102
OLSSON O GRAND TEL9C0T263785 01506
FAX
ASSOCIATES
FIGURE
V-1
•
•
Recorded EnCana Ownership Documents
The following documents pertains to EnCana's interest (successors in interest to Tom
Brown, Inc.) obtained from Union Oil Company of California on certain lands more
particularly described on Exhibit A attached hereto.
Please be advised, the Purchase and Sale Agreement or the 60 day notice letter from
Union Oil to Chevron are not included due to the terms of our Confidentiality
Agreement. Schedules i -Al through A-147 are not included because they are not
relevant to the lands described in the Limited Impact Review application. This narrative
will summarize the key parts of the Agreement as it pertains to the lands described on
Exhibit A.
Special Warranty Deed and Quit Claim Deed not including Reservoir Parcel
Under the terms of the "Purchase and Sale Agreement" dated June 30, 2004 by and
between Tom Brown and Union Oil, Union Oil granted unto Tom Brown Fee title to the
parcels of real property described in Schedules 1 -Al through I A47, subject to the
reservations and restrictions set forth on the Special Warranty Deed and any other surface
interest owned by Union Oil further described on the form of a Quit Claim Deed but not
including the Reservoir Land as depicted on Exhibit A (please see the map which shows
the lands in question). Chevron Shale had first right of refusal to acquire the surface and
water rights only from Union Oil as described in that certain Deed and Agreement
effective November 9, 1995 between IInion and Chevron on the lands listed on Exhibit
A. Promptly following the execution of said Purchase and Sale Agreement, Union Oil
gave Chevron Shale 60 days written notice to indicate their election to purchase said
lands. If Chevron failed to respond or acquire these lands within 60 days receipt of this
notice, it was agreed that Union would sell those lands on Exhibit A to Tom Brown, Inc.
in accordance with the terms of the Purchase and Sale Agreement. The letter was dated
and delivered in accordance with the terms of that certain Deed and Agreement effective
November 9, 1995 to Chevron Shale on July I, 2004.
Under the terms of the Quit Claim Deed dated June 11, 2004, it specifically states
"except the fee interest to the surface rights to that parcel of real property, the legal
description of which is attached as Exhibit A (thc "Chevron Reservoir Right of First
Refusal Parcel") and except water storage rights related to such parcel." It further states
in the next paragraph that "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 lands described above (including those under the land described on the
attached Exhibit A". Therefore, the minerals were conveyed but the surface and water
rights were not as to the lands on Exhibit A. This was still pending Chevron's election to
purchase said lands, which never occurred.
Assignment and Assumption Agreement. (Reservoir Parcel 11)
On September 21, 2004, Union Oil executed the "Assignment and Assumption
Agreement (Reservoir Parcel 1 1)" and assigned to Tom Brown all right, title and interest
to the parcel of lands described in Exhibit A. Please note that Exhibit A now describes
these lands as the "Reservoir Parcel", not "Chevron Reservoir Right of First Refusal
Parcel and Water Rights" as they originally were on the Quit Claim and Special Warranty
Deed.
Special Warranty Deed including Reservoir Parcel
A Special Warranty Deed was also executed and assigned to Toni Brown on September
24, 2004 to include those lands described in Exhibit A. Therefore, Tom Brown was
originally assigned the mineral rights but later assigned the surface and water rights in
accordance with the teens of Chevron's First Right of Refusal.
•
111111 11111 111111 111 11111 111111 111111 111 111111 11 11 1!
655347 07/02/2004 02:58P 61602 P305 M ALSDORF
50 of 86 R 496.00 D 2644.50 GARFIELD COUNTY CO
• A portion oldie Mary Ann No. 39 Placer Mining Claim.
A portion of the Mary Ann No. 40 Placer Mining Claim,
•
situated in Garfield County. Colorado. described as follows:
Sixth Principal Meridian, Colorado.
T. 4 S., R. 95 W.
Sec. 19, lots 1 through 4, inclusive, E1/2, and E1/4W'/2;
Sec. 20, lots 1 through 4, inclusive, W'/i, and SE';
Sec. 28, lots 1 through 3, inclusive, SW'/<, SE'f, SW'/4NE', SE'/NE/4 and NE'/4NE'/4;
Sec. 29, all;
Sec. 30, lots 1 through 4, inclusive, E1/2, and EV2W%1;
Sec. 31, lots 3 through 6, inclusive, E'h, and E°l2W'V2;
Sec. 32, all;
Sec. 33, all;
T. 4 S., R. 96 W.,
Sec. 22. lots 1 through 6, inclusive, NW'/., and S%1SV2;
Sec. 23. lots 1, 2, and lots 4 through 8, inclusive, NE'/4, S1/2S W'/4, and SW'/4SE1/4;
Sec. 24, lots 1 through 4, inclusive, S1/2N'/2, and S14;
Sec. 25, all;
See. 26, all;
Sec. 27, all;
Sec. 28, E'/2
Sec. 33, SE'/4; E1/2NE'/4; SW'/4NE1/4
Sec. 34, Tots 1 through 4, inclusive, NY2, and N1/2S1/2;
Sec. 35, lots 1 through 4, inclusive, N1/1, and N1/2S'/2;
Sec. 36, lots 1 through 6, inclusive, S'/1N'/2, and N1/2SW'/4.
A-47
•
RECORDED CERTIFICATE OF GOOD STANDING
•
•
•
•
1111 V:161 1:101411KAIiiii1, .1 iii
Receptlonu• 700313
IV t2009 03 10.00 Ph Ja.n alberrico
I o1 6 Rea ''oa $31 00 Doc tar 0 CC CP4FIE1-0 CCUto .:0
OFFICE OF THE SECRETARY OF STATE
OF THE STATE OF COLORADO
CERTIFICATE
1, Mike Coffman, as the Secretary of State of the State of Colorado, hereby certify that, according to the
record. of this office,
ENCANA OIL & (:AS (USA) INC.
is an entity formed or registered under the law of Delaware has complied with all applicable requirements
of this office, and is in good standing with this office. This entity has hcen assigned entity identification
n imbcr 20001081983.
This certificate reflects facts established or disclosed by documents delivered to this office on paper
thmugh 11/06/2008 that have been posted, and by documents delivered to this office electronically
through I 1/11/2008 (a) 10:18:03.
I have affixed hereto the Great Seal of the State of Colorado and duly generated, executed, authenticated,
issued, delivered and communicated this official certificate at Denver, Colorado on 11/11/2008 @
10:18:03 pursuant 10 and in accordance with applicable law. This certificate is assigned Confirmation
Numbcr 7223924.
Secretary of State of the State of Colorado
End of ('cilli s
NYO(tt ttt3nll1ltorM i, turd chit[ fraILlk illotaste&cceigOL°f,S s Wste tellbilmied lsinrdtatr,(j,aad o,/ d utwo. However,
aeon intoe* ,lw It+umrr. arid raliditv Din re thrt ate obtained electronically rimy be eoaMuhed hl wtnllnX die ('rrti/tcale Confirmation Page o/
the Surdas) of Sea; M,1, Uft,. • ,,. ,r.,.,4, entering eke tee -Ocoee, confirmation nta,te,
shsplayed on the crrerfiranr, rend foifu,.wg the ,nsuec,h r1/ JitpltvJ. c:wlli.+rs eif-fhe.G.mmllce ere itn$cMtbilten vii' cpuoaa/ aiLi&eot
neetatteXist.rhe_vannLanQeifeLNrrllmmnct_igatethikak Por mon information, 'lift our Wel lite. kip :•wo. rr.o, .1We . -• ,. elkh awks's,
('eras and sckcl 'Fregaennly AsseJ Quttuunt "
•FRr OS 1-46..,e..1081r19W.a
•
RECORDED DELA% ARE MERGER DOCUMENT
•
•
•
•
•
SII IIP1F2E9i,'t' OIDOKI t11''1l IVIll'liRM lid it III
Reccp taonll: 7G0323
12/1812000 03.11.00 LT`• Jam. Glnar lco
7 nt 6 4., F.. $31 00 Goo Fae 0 00 GARFIELD GOUNtY :0
DelZrware
The first State
PAGE 1
I, HARRIET SMITH WINDSOR, SECRETARY OP STATE OF THE STATE OF
(fELAWARR, 1)O HEREBY CERTIFY THE ATTACHED IS A TRUE AND CORRECT
COPY OF THE CERTIFICATE OF MERGER, WHICH MERGES:
"TBI PIPELINE COMPANY", A DELAWARE CORPORATION,
"TBI WEST VIRGINIA, INC.", A DELAWARE CORPORATION,
"TOM BROWN, INC_", A DELAWARE CORPORATION,
WITH AND XNTO "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, AS RECEIVED
AND FILED IN THIS OFFICE THE TWENTY—SECOND DAY OF DECEMBER, A.D.
2004, AT 6:15 O'CLOCK P.M.
AND I DO HEREBY FURTHER CERTIFY THAT THE EFFECTIVE DATE OF
THE AFORESAID CERTIFICATE OF MERGER IS THE FIRST L?AY OF JANUARY,
A.D. 2005
A FILED COPY OF THIS CERTIFICATE HAS BEEN FORWARDED TO THE
NEW CASTLE COUNTY RECORDER OF DEEDS.
2137895 8100M
040934710
Harriet Sm1th Windsor, So reciry of State
AUTHENTICATION: 3584585
DATE: 12-29-04
•
•
IIIIIIKCAPARMA140411115911Willbt 111001
Racoptionl7 750323
32o 6 Re Feee 4 $311.00YDecean roe 0 001 COs.1 1ELU COUNTY CO
3 0' 6
DEC -22-2004 ITEM} 04;12 FM
FAR !id 3038322366 P. 03
Stain of Delaware
Seceetasy of State
te.vIa oo of Corporatiw,s
rbItvt rrd 06:15 PM 12/22/2004
FILED 06:25 of 12/22/2004
SW 040934710 - 2137895 F1r&
STATE OF DELAWARE
CERTIFICATE OF MERGER OF
DOMESTIC CORPORATIONS
Pursuant to Title lf, Section 251(c) of the Dclaw:aro General Corporacion Law, the
wuicreigncd corporation executed the following; Certificate of Merger:
oration being merged into this surviving corporation
FiRST: The name of the surviving corporation is EnCataa Oil & Car (USA) Inc.. and the
names and jurisdictions of the corp
are oft follows'
atst' {io ce%OtattOn
Tomoms Delaware corporation
n, Delaware corporation
TBI pipcl:petine Company Delaware corporation
TBi West Virginia, Inc.
SECOND: The Agreement and Plan of Merger has beam approved, adopted, certified,
executed and acknowledged by each oldie constituent corporations.
rRIRD: The name of the surviving corporation is EnCana Oil & Gas (USA) Inc., a
Delaware corporation.
FOURTH: lite Certificate of Incorporation of the surviving corporation droll be its
Cetiboatc of incorporation,
�pTH; The merger is to become effective nn January 1, 2005.
SIXTH: The Agreement and Plan of Merger is on Cele at 950 171b
Street,
re t, Suite
o
2600, Denver, Colorado 80202, the place of business of the surviving m
SEVENTH: A copy of the Agreerocatt and Plan of Merger will be furnished by the
surviving corporation on request, without cost, to ally stockholder of the constituent
cnrporatiOnS.
yet WiTNESS WHEREOF. said surviving co pDora ion has
s Goose2004 s certificate to be
signed by an authori1ed officer, the 17th day
ENCANA OIL 86 GAS (USA) INC.
By:
M .r A. Viviano, Secretary
01 R0\Sutufihn tarme*Cel,\k Mei _11FswW der
QsanCoro_ A2924%21/.4 Co 7xu1 IlmrrpM1 DTfOaUto, KI
1111111/1V114,11111110, IV, P11111E411killtfrite Ai1Ibl
Reeeptiantl 7G03i3
'I2f10f2if20 D3 14 no Pet Jnan After i=
9 of b Roc Fee S31 ON Ccc tap 0.00 r FIELD COUNTY co
Docu:norlI 0 e1sin.01'ec
1f -document it on paper. St0 OC
Ifducaoeat it fledclechonn. y Cw cntl2 Net A' titable
Ftet at: acbje.l 10 change..
Pot .t wee: thin. nee n °Noe
upit$ of Dred doea•,ern ti tit
'UCLvutJaJf11.51
Dee,+pre doe .meno 10.
CNora.:, S:lle mut SV:e
BV.n.:/a (1iti{ ion
ISR ftnudnav,SuP!2C5
f::m!r.CU 00202,3107
paprr.a:el.xri4 tr 10i he t{'pe3 c r
SIHICout y t of t'ulcllu kIdIty Wit) )rat741
fled purata eel and p-90-3116 of IM: Colulalo Ncvieed Statutes (C.P. )
a 1917i!5 1:
!St,: zTt':'r r' T:11c
1l-11-ci
.!.1t717M41ee W letlunf .!
ID n0Rtlh:1.
1 the n•r+r••
2 Auumnl Natty name
bf d.Items freta Ti:an.e)
3. Rc iN+ted agent: (4.1n,d. 34.ral)
OR (.faktain.4.,oep.Uutpn).
l9d7111,10
tun door, •t .
t.4u4 ra.}ti
The peNon appoilticd tl rrgtuer.d taunt In the document hat concerted to king w appointed.
I.0 1Mclaf agent &tied Adieu:
!ir.ere mw, ed.e..Sr.2
/OM •.Brei 114..7.141Cod.i
It dried agent snail: .ngeddteu. ,., nolser._
ti rd.f6xso aoa .to..) q►vp tteoitlhnp4e dandtAr ei►J
ON
If tt_ t.•1; tkad apcnl is no bast ;o
h maimaincd, the mail.n] odd.ca! 10
which torv/M of proce•.t may he
moiled:
Ord
(lre.lae- pro arab, 'Owl" -Ira, US)
knCana Oil • Gas (U0h)'.o.
Arm
]TO1297S SA, 1700 700••+I.rir'llaii' &i+yhrw.ay
Demo CO 00202
(NO awn) (row Ley COA,
Roe NI tZaI
1 •CI
•
•
•
•
•
•
Sill W4101011 &F kqt ), Mi 111
RaceptionO! 760313
12/10/2006 03 le:00 P1 Join Marion
5 of 6 Rec Fe„ $31 03 Uoc ree 0 00 CA4RFSELD COt$NTY c,0
4. lwisdic':cn of formation
i, puncipal *Hitt reading addre:a.
rP,,,na rgp,a. card ,ry.•1-ll"rl'L
OeLwme
370 170 Sorel, Sults 1700
,r`.d tr.r,Mrwwa, a• fert>�`ac dara.,wi+:/r.l
Cenvoe crl curet
ir.,—,:rr r.7
tP 1.mre - 1(YiArw'-,C....'T - y.or UJ,
6. 114. ernny wdn r,* k ,,iter t,.• nark b,nin:se m cordite! aeov,bes r that slate and it taicyarshea itiI i iy
10 transact tininess or c,. duct ac:lclaa 1.1 this state,
1. Iha ney.Istrollcn of all 0adt: uaonu rrgt.+rured by Cm c,d,ly •.n't :h.',acre* of -.,late pnamnl to 17 70 10!,
C.N.S. and any sssutned entity mune pursuant t0 ;7.90-401. C.R.S ate withdrawn upon the till!.! of
Ilea 1lattre1l
:L ((Otto t da Delayrd effeHrve date: . _._ _ —
f••,.ua•, n-,1
Notice:
t'fusfnt( this document to tc delivered to 1k sa:ettry of state for !lung aEall c0n177741C the allinna4i01101
74.0,7wkd.•nt.0i */cath irdfvidusl tooling ,uh delivery, unttr penehics ofperjury. that the do:unent is dk
radretdutl'a a.l inn) deed, or Intl the individual 31 rod nal bel,evca the 4ocu..ent !s the act and dun! r11 tl.c
person or, ishose behalf the lla'ividaal ii eaasing the d0cumen110 be ddiveted for filing, taken inconformity
with the requitement, al pan 3 e tan isle 90 of Mk 7, C k.S , the constituent docusucola, .iso! dr. wyaui,
analut.a. and,:wt !tie Individual in gond fah.A helinw the facts wiled in rhe document ate Irv: and the
datsarrere complies wail the re:poremco's ntthat 'an, OK. ccmriturnt dctwncnb, and IN o,gonk alnut:•s
pc Intl notice applies W cath individual 140 catuu this duce:nentto In deliver:d to the acctelary of
4131., lOieertf or 001 MA individuvl is named in the dee amen: as one who sus cauDad n: to be do:tvcted
N a nte(a) and addresses) of d e
individuai(t) &awing tie document
In be delivered Aar(i. o " " alga
fln9 1Faar1 OS4%1
We:aore 3%A Lan flees $ ioe4y, P C.
., —... She«sea fowl �n;y; Pari4Sie at; .yw ad.oi
e21 1711, Yaeol, SIN 599
vow
_.___ Ica
CO 80202
uracil (Panda YCa,r.
flb..ta yWO .3l) reee.'y- Iota v3,
IIk ,vq. w eew .1 'Mins of moor na• rr.e„WJ llranvan J1e,a t.faa Ns4#aree...NnWa.,
.Jin•. r.AH'wdlnFnJ..a n.N.a ,A: due.'. ,rs b. a•L.,„ laMJAy, ..avl '.. t.r0+,I ler,e A'r+e•er:.,, er entwr y.• er.r
teteeLr,ohrratl.fade 4.I
lkrrlalmer.
Ths rem ant any related rurruelIons, are raw toterncd hs provide teg,al, tww.c.. or laX;taut, aid me
altered ns u poblie service without represadatinn or warranty, Whle!ids form is Uelieval to satisfy mUiIDi rn
,...
7.1l•a;rr
rr1
�iEcti,714 ,rril!FLLIH# 1110 ►I' 11111
R.ctept ions : 766313
12103/2000 03 14 00 PM dues aide.tco
F of b Roc Fee -131 OD Doc Foe 0 CO GIME lEi o CO'JN11r f,0
Sc1Yt Itquucmtub at of its is ni.n law, Is the mu) be omu.dcd hum
brae to 'Wig, rnaiea the atpontFnlity of Cie t:ie of'Ws filtat. QiWima should be zddleese4 to the u/er'f
:memey.
M..91112p0{
Tat)
•
•
•
Vicinity Map
Hunter Ridge Energy Services LLC
Wolf Ranch Compressor Station
OLSSON
ASSOCIATES
OAProject No. 013-1093
760 Horizon Drive, Suite 102 1 Grand Junction, CO 81506 1 TEL 970.263.7800 1 FAX 970.263.7456
T4S' R97W
_T5S
R97W
Wolf Ranch Compressor Station
T4S R96W
T5S. R96W:
T4S R9.5W
Encana Oil & Gas (USA) Inc.
Parcel No. 191727400012
T5S R95W
X
Ott/ li..
z
I
4W
Wolf Creek Compressor Station
.- Local Roads
iii• Affected Parcel
PROJECT NO'.
013-1093
DRAWN BY
BKR
DATE:
05/21/2013
0
2
3 4
5
Miles
Vicinity Map
Wolf Ranch Compressor Station
Hunter Ridge Energy Services LLC
Garfield County, Colorado
OLSSON
ASSOCIATES
760 HORIZON DRIVE. SUITE 102
GRAND JUNCTION, CO 81506
TEL 970.263 7800
FAX 970.263 7456
FIGURE
V-1
•
•
Drainage/Erosion Control
Hunter Ridge Energy Services LLC
Wolf Ranch Compressor Station
CA OLSSON
ASSOCIATES
OAProject No. 013-1093
760 Horizon Drive, Suite 102 1 Grand Junction, CO 81506 1 TEL 970.263.7800 1 FAX 970.263.7456
•
•
•
Final Drainage Report
Wolf Ranch Compressor Station
(E24 496 Compressor Station)
April 12, 2013
Prepared for:
Hunter Ridge Energy Services, LLC
2717 County Road 215
Suite 100
Parachute, CO 81635
Prepared by:
RIVERCITY
C O N S U LTA N T S
744 Horizon Court, Suite 110
Grand Junction, CO 81506
Phone: (970) 241-4722
Fax: (970) 241-8841
Job No. 1311-006
•
TABLE OF CONTENTS ........................ I
I. Introduction 1
A. Background 1
B. Project Location 1
C. Project Description 1
D. Previous Investigations 2
II. Drainage System Description 2
A. Existing Drainage Conditions 2
B. Offsite Tributary Area 3
C. Proposed Drainage System Description 3
D. Drainage Facility Maintenance 3
III. DRAINAGE ANALYSIS AND DESIGN CRITERIA 3
A. Regulations 3
B. Hydrologic and Hydraulic Criteria 4
C. Calculation Methodology 4
D. Input and Results 4
IV. CONCLUSIONS 5
FIGURES
General Location Map 1
Site Grading Plan 2
APPENDIX
Hydrology and Hydraulic Calculations (model output) .. A
NRCS Web Soil Survey B
S:\PROJECTS\1311 Hunter Ridge Energy Services \ 006 - Wolf Ranch Compressor Station \ Design \ drainage \ Wolf Ranch CS Drainage Report.doc FDR -I
•
I. Introduction
A. Background
The purpose of this Drainage Report is to identify pre and post development
drainage conditions for the Wolf Ranch Compressor Station (aka E24 496
Compressor Station). This report identifies the following items with respect to
the site: existing drainage, potential drainage issues resulting from this
project, solutions to the potential drainage issues, and post construction
BMPs.
River City Consultants, Inc. prepared this Final Drainage Report for Hunter
Ridge Energy Services of Parachute Colorado.
B. Project Location
The project is approximately 21 miles north of Parachute Colorado (-17 miles
as the crow flies) on the Roan Plateau. The project is north of I-70 and the
Colorado River, and just south of Litchliter Gulch. The project lies off of
County Road 403 (aka Stewart Gulch Road). In more legal terms, it is located
in the Northwest 1/4 of Section 24, Township 4 South, Range 96 West of the 6th,
Principal Meridian, Garfield County, Colorado.
Primary access to the site is from County Road 215, various private roads,
and finally County Road 403. The proposed project is on land owned by
Encana Oil and Gas (USA) Inc. (Parcel #s 191727400012).
C. Project Description
The primary purpose of the proposed project is to create a level pad area for a
natural gas compressor station. The station will have associated roads,
buildings, equipment, and utilities. The project will consist of general site
grading, gravel surfaced roads, stormwater conveyance facilities (ponds,
ditches, and pipes), and installation of buildings, equipment, piping, and
other appurtenances associated with the facility. This project will require
approximately 70,000 cubic yards of in place material moved as part of this
project. It is estimated that the cuts and fills will balance on this project.
Proposed finished surfaces will be concrete, roof, gravel, compacted soil, or
top -soiled and revegetated. Most of the proposed finished surface will be
gravel and compacted soil. No lots are being proposed as part of this project.
S:\PROJECTS\1311 Hunter Ridge Energy Services\006 - Wolf Ranch Compressor Station \ Design \ drainage \Wolf Ranch CS Drainage Report.doc FDR -1
The cover conditions at the project site currently consist of existing two track
road and undisturbed land with typical high elevation sage brush and scrub
oak cover. The existing grades on the project site vary from relatively flat to
—50%.
According to the NRCS web site, the upper layer of soil present at the project
site consists of Irigul-Starman channery loam 5-50% slopes (14%), Parachute -
Rhone loam 5-30% slopes (73%), and Rhone loam 30-70% slopes (13%). These
soil types have hydrologic soil classifications of B and D. A hydrologic soil
classification of D will be used for modeling the site due to the removal of the
upper layers of soil and the likely exposure of high runoff potential soils and
bedrock.
D. Previous Investigations
No known previously completed drainage reports effect the projected area.
Accordingly none were reviewed as part of this project.
II. Drainage System Description
A. Existing Drainage Conditions
The site drains to the East Fork of Stewart Gulch and Litchliter Gulch, both of
which in turn ultimately drain to Piceance Creek.
Existing cover conditions with the major basin are primarily undeveloped.
The development within the basin almost completely consists of dirt/gravel
roads, pipeline right-of-way, and well pads. The predominant drainage
pattern is characterized by overland flow sloping to the north towards
Pieance Creek or south towards Parachute Creek. Grades range from
relatively flat on top of the mesas, ridges, and within the floor of the valleys
to vertical and near vertical on some of the canyon walls. Natural channels
and other natural features collect and concentrate surface runoff. Occasionally
roads cross the slope also concentrating and diverting runoff. Flow from the
site and areas up -basin from the site drain to Piceance Creek and ultimately
to the Colorado River.
The Site currently contains a dirt two track road, but is otherwise
undeveloped. Vegetation exists on the unimproved portions of the site and
for the purposes of these calculations was classified as in fair to poor
condition (to be more conservative).
S:\PROJECTS\1311 Hunter Ridge Energy Services\006 - Wolf Ranch Compressor Station \ Design \ drainage \Wolf Ranch CS Drainage Report.doc FDR -2
•
•
•
B. Offsite Tributary Area
The proposed project is right on the apex of a ridgeline. Accordingly the site
receives little to no off-site flows.
C. Proposed Drainage System Description
The proposed final drainage system will consist of earthen ditches, culverts,
sediment ponds, and other temporary stormwater BMPs. A small percentage
of the final cover will be impervious (i.e., concrete, roof, etc.).
The water quality from the site under proposed final conditions will be
controlled by revegetation, check dams in the ditches, sediment basins, outlet
structures, level spreaders, and surface stabilization/hardening (e.g., gravel
surfaces and rip -rap).
The sediment ponds were not designed to provide detention or retention.
However, just by their nature the ponds will slow runoff and retarding the
peak flow from the site.
Access to and through the site shall be by the proposed gravel surface roads
as shown on the drawings.
D. Drainage Facility Maintenance
The proposed drainage system will not be maintenance free. Maintenance
will be performed by Hunter Ridge Energy Services, LLC. Sediment ponds
will be cleaned when sediment is 12 inches deep or within 6 inches of the
outlet. Ditch check dams will be cleaned when sediment build up is one half
the height of the dam or 12 inches, whichever is less. Vegetated buffer areas
will be protected by signs and/or fencing to keep people and traffic off these
areas.
It is advisable to inspect drainage facilities following any major storms or at a
frequency no less than once a month and that inspections be documented by
the person conduction the inspection. Any issues or deficiencies noted during
the inspection should be corrected immediately.
III. DRAINAGE ANALYSIS AND DESIGN CRITERIA
A. Regulations
The policy, design criteria, design constraints, methods of analysis,
recommendations, and conclusions presented in this report are in
conformance with standard engineering practice and Article VII Standards
S:\PROJECTS\7317 Hunter Ridge Energy Services \ 006 - Wolf Ranch Compressor Station\Design\drainage\ Wolf Ranch CS Drainage Report.doc FDR -3
Section 7-207 Stormwater Runoff of Garfield County Unified Land Use
Resolution of 2008, as amended 7-19.
B. Hydrologic and Hydraulic Criteria
No drainage constraints were noted for this project. The hydrologic design
criteria presented in this report are in conformance with standard engineering
practice. Other manuals and publications were also reviewed to determine
conformity with accepted design practices and applicability to the project.
These include the National Engineering Handbook, the Civil Engineering
Reference Manual, and the Certified Professional in Storm Water Quality
(CPSWQ) Study Guide.
C. Calculation Methodology
Hydrology and hydraulic calculations were performed using Autodesk Storm
and Sanitary Analysis 2011 (formerly BOSS International's StormNET). Some
hydraulic calculations were spot checked by hand or using simple flow
calculation programs. The following model engines/methods/equations
were used: USEPA SWWM (hydrology), SCS Curve Number (infiltration
method), hydrodynamic (hydraulic routing/link), and Hazen -Williams
(hydraulic link).
D. Input and Results
The model input and results are as follows:
• A SCS Curve Number was derived based on cover conditions within
each basin (see attached model printout for specifics)
• The model consists of 7 basins, 21 links (ditches and culverts), 5
storage nodes (ponds), 6 orifices, and 5 weirs.
• The 100 year 24 hour storm was used to size all drainage features (SCS
Type II with a total rainfall value of 2.6 inches from NOAA Atlas 2
Volume III - Colorado).
• The basins produced between 1.81 and 1.39 inches of runoff (a little
more than 0.5 inches, but less typically not less than 1 inch, of rainfall
was lost to infiltration and other losses for most basins).
• Basin sizes ranged from 0.41 acres to 2.63 acres.
• The average runoff rate was 2.4 cfs per acre. This runoff rate is slightly
higher than expected, but likely shows the conservative nature of the
model (i.e., over estimation due to conservative model input).
• Model continuity for runoff (hydrology) was 0.000% and -1.448% for
routing (hydraulic). These values are fully within the acceptable range.
S:\PROJECTS\1311 Hunter Ridge Energy Services\006 - Wolf Ranch Compressor Station \Design\drainage\Wolf Ranch CS Drainage Report.doc FDR -4
•
•
IV. CONCLUSIONS
The policy, design criteria, design constraints, methods of analysis,
recommendations, and conclusions presented in this report are in
conformance with standard engineering practice and Article VII Standards
Section 7-207 Stormwater Runoff of Garfield County Unified Land Use
Resolution of 2008, as amended 7-19.
The proposed design, which is based on the model, is shown on the
construction plans. The design include four sediment/detention ponds
located at the four points of discharge from the pad, ditches, culverts/outlet
pipes, outlet structures, and level spreaders.
The proposed design will effectively manage stormwater and provide
stormwater BMPs for this site. The proposed BMPs are simple, easy to
inspect, easy to maintain, and proven to work effectively.
S:\PROJECTS\1311 Hunter Ridge Energy Services \ 006 - Wolf Ranch Compressor Station \ Design \ drainage \ Wolf Ranch CS Drainage Reporl.doc FDR -5
•
FIGURES
•
•
Project
Location _\'
Bak tLcpu i'ti i
arachat«'
4v
inter Ridge Energy Services LLC
Wolf Ranch Compressor Station — General Location Map
DATE ISSUED: 04/12/2013
NOT TO SCALE
FIGURE
1
RIVER CITY
C O N S U L T ANTS
S:\ ROJECTS\131111unlei RIAge gneegy Services\006 - Wdf Rzrch Compressor Stalion\Oexl01311-006.drv3. 4/16/101311:]5:20 AM, OWG To POF.403, 1:1
/
•
/
50
25
50
IN FEET I
I INCH = 50 FT.
CONTOUR INTERVAL I FOOT
- -
- - - - - - -- _ - - - - - Overflow
Riprop Mat
W=10.0'
L=15.0'
D5o=6" Min.
Level Spreader
=(See Detail Sheet 11)
100
_�-- - W=10.0'
=% �._�� L=15.0'
7 Dso=6" Min..
/
fir'` ' rT`TG�T ly
BSY 1 ,I r 1 1 t 1 =
e'
- Riprap Mot
W=5.0'
L=10.0'
Dso=6" Min. -
_ _-_-
-'--_-_- - kMgh-Point 7,7_ -
_ _ _ - _ _ - _ -- _ 'N. 6t195.93- _ -
---- - - - - --Ezt15'843=23= -----
€L:-8138.00
,
Riprop Mot
W=5.0'
L=20.0'
- ,D5o=6" Min.
30 LF Ie 0.8%
18" Class V RCP
invert In 8129.10
Invert Out: 8128.85
Agridrain Water Levet
Control Structure
(See Detail Sheet 11)
'.h Point
701.64
33.23
1
N:.
6:11
EL: -813 .
Low Point-
N:61550.10
ointN:61550.10 ' -
E:1168_13.23 - -
•=135.00
60.00'
Proposed
Pipeline
Corridor
Overflow
Riprap Mat\
L-10.0'
D5o=6" Min.
Level Spreader
(See Detail Sheet 11)
Riprap Mal
W=5.0'
L=10.0'
D5o=6" Min.
Low Point
N:61701.64
'6:116643.23
EL: 8135.00
\ \ \ '\
\ \ \
'., Pod Elevation
\ 'EL: 8140
1 O O e 0 2 _
t L - 0
Pod Elevation --� 1-I _I_J-I 1-1_1_"-1.1-1--1-1" ..1 -1 -
EL: 8140.250 B%as - -
1 I _--_ I I_--
I I
/
/
..-. Pod •Elevation I4y 1`I i II '
---EL:8139.750_�8 1 1
If11l1iJ- - -
1
w Point
: • •711.64
E:1 6722,32
EL 8134.051
Riprop Mot / /
W=5.0' I
1--3-`51 L=24.0'//
Dso=6" Min.
}
m im I
•
I I\ / % I
T
i \ ,
\ Restore Two Track Rood
\ 1
\
\
•
RiprapMot Extends
1' Outside Edge _ _ - - - - -
Extend -s-
of Disturbance _
Dno=6" Min.
36 LF 0 0.87.Invert In 8128.55
12 LF 0 1.7%
18" PVC
Invert In 8128.75
Invert Out: 8128.55
/ %�
om
N:81295.44
' - !:116393.24
EL:8135-00
_ =813
Riprap Mat- _
W=5.0'
L= 5.0'--- -
Dso=6" Min.
B"0.
\ \ S \ \\ ` \ \ \ ` \ \
74 N01E5:
1. 1HE LOCATORS OF UNDERGROUND UTILITIES AS SHOWN HEREON ARE BASED ON VISIBLE EVIDENCE FROM ABOVE GROUND
STRUCTURES. MARKINGS BY THE RESPECTIVE UTUIY COMPANIES AND/OR 111E10 LOCATOR SERVICES AND DRAWINGS PROVIDED BY
100 UTILITY COMPANIES. NO EXCAVATIONS MERE MADE DURING THIS SURVEY TO DETERMINE THE EXACT LOCATIONS AND DEPTHS OF
11.10 UNDERGROUND UTILITIES AND STRUCTURES ACTUAL LOCATOR MAY VARY SUGH1"9 FROM THOSE 5H0001 HEREON AND
ADDITIONAL UNDERGROUND UTILITIES MAY EXIST. EXISTENCE AND LOCATIONS OF ALL UNDERGROUND UTUTIES AND STRUCTURES
SHOULD BE VERIFIED PRIOR TO ANY CON510000 N ON THIS PROPERTY.
2. EXISTING SURVEY INFORMATION (INCLUDING EXISTING UTLIES) PROVIDED BY NEMEAN ENGINEERING AND LAND SURVEY.
3. BASIS OF BEARING: BEARINGS SHORN HEREON ARE BASED ON THE UNE BETEN THE MST QUARTER CORNER AND 1HE
SOUTHNE5T CORNER OF SECTION 24, TOWNSHIP 4 SOUTH, RANGE 90 NEST OF THE 6TH PRINCIPLE MERIDIAN. ELEVATORS 5HOMN
HEREON ARE BASED UPON NAVD 29. COORDINATE DATA SHORN HEREON 15 BASED UPON A LOCAL COORDINATE 5051EM DEVELOPED
BY UINTAH ENGINEERING & LAND SURVEYING.
. 1HE ORIGINAL DRAWING SIZE IS 22' x 34'.
Agridrain Water Level
Control Structure -
(See Detail Sheet 11)
\ •
UNCC
straw.%owNsio clt6610YN,
•0C w.••, CW on you dig.
CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU
DIG, GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER UTILITIES.
\
•
16 LF 0 1.2%
18" PVC
Invert In 8132.50
Invert Out: 8132.30 • j '
/ /
- // // /// / / �� 32 /F 01.65
/ �� 18" Double Woll ADS
/ //�j Qy. 'Invert In 6717.00 .'/// /./,/./
32 LF 0 20.716 / / //,o-� / 1 Invert Out: 6116.50 r / (11":ii„::::_.1:::....7__/_;:t_
18" PVC / // /QrAey// / ,.,I- Invert In /NJY ,'/ / 0 en Cut Ditch InvertOut8:1321.3,50.6582,%,�ti<%r p 1 / I/r "`�///////
r/// '0IDX Slope,',�//''I I I I I / I / '
/! 1 / j l / : ///// / /,`°/- "i; //i',//iii/i/� /Ii l /(!i/''
/ / 7 � / 1 I � I t 1/ / //' /// /////// i/�_/iii i%/'/:/'//'////////////'';;:/'
��/i//// ; �;//1 i
F' // l I , / / 1 1 1 1 1 1 11' ('///,//////r'/���%�"i/��i/,i///i/ "///;'
g120.
REVISIONS
NO.
DATE
DESCRIP110N
BY
32 LF 0 1.6%- �'/ j�'
18" Double Wall ADS //
Invert In 8120.50 '� // i /i
Invert Out: 8120.00
Open Cut Ditch
To Daylight
0 1 7 Slope
HUNTER RIDGE
ENERGY SERVICES LLC
RIVER CITY
C O N S U L T A N T S
14e it d ;annn fn SA/110 Pro*. 9]0.211.4]22
M
frai,v.n N1Y0 Fn.9T09J169J1
EARTHWORK VOLUMES
(UNADJUSTED)
21,235 CY Topsoil (Assuming 12")
59,091 CY Cut
42.843 CY Fill
16,248 CY Cut
PADBASE VOLUMES
Class 5 Aggregate Base Course = 4,890 CY
Class 2 Aggregate Bose Course - 7,336 CY
ROADBASE VOLUMES
Closs 5 Aggregote Bose Course = 93 CY
Class 2 Aggregate Bose Course = 139 CY
Hunter Ridge Energy Services LLC
Wolf Ranch Compressor Station
Grading Plan
PROJECT #1311-006
DRAWN BY: nmr
CHECKED BY: mi'
SCALE DATE ISSUED: 05.07.13
HORI2: 1" 50'
VERT: N/A
SHEET NO. OF SHEETS
•
APPENDIX A
•
Calculations
•
•
HUNTER RIDGE ENERGY SERVICES, LLC
WOLF RANCH COMPRESSOR STATION
HYDROLOGY & HYDRAULICS MODEL OUTPUT- PIPES
•
•
SN
Element
ID
Length
(ft)
Inlet
Invert
Elevation
(ft)
Outlet
Invert
Elevation
(ft)
Average
Slope
(%)
Pipe
Diameter
or Height
(inches)
Manning's
Roughness
Entrance
Losses
Exit/Bend
Losses
Additional
Losses
Initial
Flow
(cfs)
Peak
Flow
(cfs)
lime of
Peak
Flow
Occurrence
(days hh:mm)
Max
Flow
Velocity
(ft/sec)
Travel
Time
(min)
Design
Flow
Capacity
(cfs)
Max Flow /
Design Flow
Ratio
Max
Flow Depth /
Total Depth
Ratio
Total
lime
Surcharged
(min)
Max
Flow
Depth
(ft)
Froude
Number
Reported
Condition
1
Link -49
18.97
8121.00
8120.00
5.2700
18.000
0.0240
0.9000
0.5000
0.0000
0.00
0.66
0 11:58
5.06
0.06
13.06
0.05
0.13
0.00
0.19
0.57
Calculated
2
Link -50
19.66
8118.00
8117.00
5.0900
18.000
0.0240
0.9000
0.5000
0.0000
0.00
1.04
0 11:58
5.17
0.06
12.83
0.08
0.17
0.00
0.26
0.55
Calculated
3
Link -52
44.63
8130.30
8129.50
1.7900
18.000
0.0120
0.9000
0.5000
0.0000
0.00
7.71
0 12:01
8.50
0.07
21.62
0.36
032
0.00
0.78
2.39
Calculated
4
Link -55
47.90
8132.30
8125.50
12.1100
18.000
0.0150
0.5000
0.5000
0.0000
0.00
0.01
1 00:36
3.31
0.24
34.30
0.00
0.01
0.00
0.02
3.93
Calculated
5:\PROJECTS\1311 Hunter Ridge Energy Services \ 006 - Wolf Ranch Compressor Station\Design\drainage \Wolf Ranch CS Model Outputxlsx
Page 1 of 9
11:05 AM 5/7/2013
HUNTER RIDGE ENERGY SERVICES, LLC
WOLF RANCH COMPRESSOR STATION
HYDROLOGY & HYDRAULICS MODEL OUTPUT - CHANNELS
SN
Element
ID
Length
(ft)
Inlet
Invert
Elevation
(ft)
Outlet
Invert
Elevation
(ft)
Average
Slope
(%)
Channel
Type
Channel
Height
(ft)
Channel
Width
(ft)
Channel
Manning's
Roughness
Peak
Flow
(cfs)
Time of
Peak
Flow
Occurrence
(days hh:mm)
Max
Flow
Velocity
(ft/sec)
Travel
Time
(min)
Design
Flow
Capacity
(cfs)
Max Flow /
Design Flow
Ratio
Max
Flow Depth /
Total Depth
Ratio
Total
Time
Surcharged
(min)
Max
Flow
Depth
(ft)
Froude
Number
Reported
Condition
1
Link -45
304.42
8138.00
8135.00
0.9900
Trapezoidal
1.000
51.10
0.0220
5.50
0 11:58
3.11
1.63
107.68
0.05
0.26
0.00
0.26
0.55
Calculated
2
Link -46
188.86
8136.00
8135.00
0.5300
Trapezoidal
1.000
52.10
0.0220
4.04
0 11:58
2.29
1.37
80.66
0.05
0.26
0.00
0.26
0.32
Calculated
3
Link -47
356.06
8136.00
8134.50
0.4200
Trapezoidal
1.000
52.10
0.0220
7.39
0 11:58
2.37
2.50
71.95
0.10
0.35
0.00
0.35
0.30
Calculated
4
Link -48
267.04
8136.00
8134.00
0.7500
Trapezoidal
1.000
51.10
0.0220
5.83
0 11:58
3.46
1.29
93.87
0.06
0.26
0.00
0.26
0.46
Calculated
5
Link -51
15.30
8134.00
8130.00
26.1400
Rectangular
1.000
10.00
0.0220
5.82
0 11:58
1.86
0.14
305.84
0.02
0.54
0.00
0.54
0.23
Calculated
6
Link -53
12.80
8128.25
8128.00
1.9500
Trapezoidal
0.500
7.00
0.0320
4.67
0 12:01
2.56
0.08
8.07
0.58
0.79
0.00
0.40
0.44
Calculated
7
Link -54
145.96
8134.50
8132.00
1.7100
Rectangular
1.000
10.00
0.0220
7.21
0 11:58
1.39
1.75
78.28
0.09
0.61
0.00
0.61
0.05
Calculated
8
Link -56
11.04
8125.50
8125.00
4.5300
Trapezoidal
1.000
11.00
0.0320
0.19
0 15:25
1.23
0.15
50.43
0.00
0.05
0.00
0.05
0.71
Calculated
9
Link -57
153.31
8135.00
8132.50
1.6300
Rectangular
1.000
10.00
0.0220
3.98
0 11:58
0.69
3.70
76.38
0.05
0.58
0.00
0.58
0.00
Calculated
10
Link -58
8.31
8134.00
8131.80
26.4700
Trapezoidal
0.500
6.00
0.0320
3.44
0 12:01
5.41
0.03
37.36
0.09
0.25
0.00
0.12
2.19
Calculated
11
Link -59
32.89
8135.00
8130.25
14.4400
Rectangular
1.000
5.00
0.0220
5.46
0 11:58
1.89
0.29
102.56
0.05
0.58
0.00
0.58
0.01
Calculated
12
Link -60
2.91
8132.00
8130.00
68.7300
Trapezoidal
0.500
4.00
0.0220
5.49
0 11:59
26.05
0.00
52.88
0.10
0.33
0.00
0.16
0.15
Calculated
13
Link -61
8.93
8117.001
8116.00,
11.2000
Trapezoidal
0.500
6.00
0.0220
1.04
0 11:58
3.82
0.04
25.98
0.04
0.17
0.00
0.08
0.41
Calculated
14
Link -62
9.38
8120.00
8119.00
10.6600
Trapezoidal
0.500
7.00
0.0220
0.66
0 11:58
2.74
0.06
36.79
0.02
0.09
0.00
0.05
0.37
Calculated
15
Link -63
12.36
8134.00
8133.00
8.0900
Rectangular
1.000
10.00
0.0320
2.31
0 12:06
2.55
0.08
116.97
0.02
0.09
0.00
0.09
0.27
Calculated
16
Link -64
24.19
8134.00
8131.00
12.4000
Rectangular
1.000
10.00
0.0220
4.54
0 11:58
0.83
0.49
210.65
0.02
0.63
0.00
0.63
0.01
Calculated
17
Link -65
461.55
8138.00
8134.00
0.8700
Trapezoidal
1.000
53.10
0.0220
4.57
0 11:58
3.24
2.37
105.27
0.04
0.26
0.00
0.26
0.42
Calculated
S:\PROJECTS rater Ridge Energy Services\006- Wolf Ranch Compressor Station\Design\drainage\ Wolf Ranch CS Model Outputzlsx Page 11:05 AP13
• • •
HUNTER RIDGE ENERGY SERVICES, LLC
WOLF RANCH COMPRESSOR STATION
HYDROLOGY & HYDRAULICS MODEL OUTPUT - OUTFALLS
SN
Element
ID
Invert
Elevation
(ft)
Peak
Inflow
(cfs)
Peak;
Lateral
Inflow
(cfs)
Maximum
HGL Depth
Attained
(ft)
Maximum
HGL Elevation
Attained
(ft)
1
Out -16
8116.00
1.04
0.00
0.08
8116.08
2
Out -17
8119.00
0.66
0.00
0.05
8119.05
3
P1 -Outfall
8128.00
7.71
0.00
0.49
8128.49
4
P2 -Outfall
8125.00
0.01
0.00
0.01
8125.01
5
P3 -Outfall
8130.00
5.49
0.00
0.13
8130.13
6
P4 -Outfall
8131.80
3.44
0.00
0.12
8131.92
7
P5 -Outfall
8133.00
2.31
0.00
0.09
8133.09
Page 3 of 9
S:\PROJECTS\1311 Hunter Ridge Energy Services\006 - Wolf Ranch Compressor Station \Design\drainage\Wolf Ranch CS Model Output.xlsx 11:05 AM 5/7/2013
HUNTER RIDGE ENERGY SERVICES, LLC
WOLF RANCH COMPRESSOR STATION
HYDROLOGY & HYDRAULICS MODEL OUTPUT - PONDS (STORAGE NODES)
SN
Element
ID
Invert
Elevation
(ft)
Max
(Rim)
Elevation
(ft)
Max
(Rim)
Offset
(ft)
Initial
Water
Elevation
(ft)
Peak
Inflow
(cfs)
Peak
Lateral
Inflow
(cfs)
Peak
Outflow
(cfs)
Peak
Exfiltration
Flow
Rate
(cfm)
Maximum
HGL
Elevation
Attained
(ft)
Maximum
HGL
Depth
Attained
(ft)
Average
HGL
Elevation
Attained
(ft)
Average
HGL
Depth
Attained
(ft)
Time of
Maximum
HGL
Occurrence
(days hh:mm)
Total
Exfiltration
Volume
(1000-ft3)
Total
Flooded
Volume
(ac -inches)
Total
Time
Flooded
(minutes)
Total
Retention
Time
(seconds)
1
P1
8128.25
8134.00
5.75
8128.25
8.89
0.00
7.71
0.00
8133.44
5.19
8130.54
2.29
0 12:01
0.00
0.00
0.00
0.00
2
P2
8132.00
8135.00
3.00
8132.00
7.21
0.00
0.01
0.00
8133.64
1.64
8133.27
1.27
1 00:35
0.00
0.00
0.00
0.00
3
P3
8130.25
8132.25
2.00
8130.25
6.41
0.00
5.76
0.00
8132.21
1.96
8132.02
1.77
0 11:59
0.00
0.00
0.00
0.00
4
P4
8132.50
8135.00
2.50
8132.50
3.98
0.00
3.44
0.00
8134.20
1.70
8134.00
1.50
0 12:01
0.00
0.00
0.00
0.00
5
P5
8131.00
8134.95
3.95
8131.00
4.54
0.00
2.31
0.00
8134.27
3.27
8133.54
2.54
0 12:06
0.00
0.00
0.00
0.00
S:\PROJECTSS.unter Ridge Energy Services \006- Wolf Ranch Compressor Station \ Design \drainage\Wolf Ranch CS Model Output.xlsx Page 11:05 AM •
3
•
HUNTER RIDGE ENERGY SERVICES, LLC
WOLF RANCH COMPRESSOR STATION
HYDROLOGY & HYDRAULICS MODEL OUTPUT - JUNCTIONS
•
SN
Invert
Elevation
(ft)
Ground/Rim
(Max)
Elevation
(ft)
Initial
Water
Elevation
(ft)
Initial
Water
Depth
(ft)
Surcharge
Elevation
(ft)
Surcharge
Depth
(ft)
Ponded
Area
(ft')
Peak
Inflow
(cfs)
Peak
Lateral
Inflow
(cfs)
Maximum
HGL
Elevation
Attained
(ft)
Maximum
HGL
Depth
Attained
(ft)
Maximum
Surcharge
Depth
Attained
(ft)
Minimum
Freeboard
Attained
(ft)
Average
HGL
Elevation
Attained
(ft)
Average
HGL
Depth
Attained
(ft)
Time of
Maximum
HGL
Occurrence
(days hh:mm)
Time of
Peak
Flooding
Occurrence
(days hh:mm)
Total
Flooded
Volume
(ac -inches)
Total
Time
Flooded
(minutes)
1
8118.00
8120.00
8118.00
0.00
9000.00
880.00
1.00
1.04
1.04
8118.43
0.43
0.00
1.57
8118.02
0.02
0 11:58
0 00:00
0.00
0.00
2
8121.00
8123.00
8121.00
0.00
9000.00
877.00
1.00
0.66
0.66
8121.33
0.33
0.00
1.67
8121.02
0.02
0 11:58
0 00:00
0.00
0.00
3
8117.00
8119.00
8117.00
0.00
9000.00
881.00
1.00
1.04
0.00
8117.09
0.09
0.00
1.91
8117.00
0.00
0 11:58
0 00:00
0.00
0.00
4
8120.00
8122.00
8120.00
0.00
9000.00
878.00
1.00
0.66
0.00
8120.05
0.05
0.00
1.95
8120.00
0.00
0 11:58
0 00:00
0.00
0.00
5
8128.25
8131.50
8128.25
0.00
9000.00
868.50
1.00
7.71
0.00
8128.87
0.62
0.00
2.63
8128.28
0.03
0 12:02
0 00:00
0.00
0.00
6
8134.00
8135.00
8134.00
0.00
9000.00
865.00
1.00
8.90
0.00
8134.11
0.11
0.00
0.89
8134.00
0.00
0 11:58
0 00:00
0.00
0.00
7
8136.00
8137.00
8136.00
0.00
9000.00
863.00
1.00
9.18
9.18
8136.49
0.49
0.00
0.51
8136.04
0.04
0 11:58
0 00:00
0.00
0.00
8
8136.00
8137.00
8136.00
0.00
9000.00
863.00
1.00
7.58
7.58
8136.47
0.47
0.00
0.53
8136.04
0.04
0 11:58
0 00:00
0.00
0.00
9
8134.50
8135.50
8134.50
0.00
9000.00
864.50
1.00
7.39
0.00
8134.73
0.23
0.00
0.77
8134.51
0.01
0 11:58
0 00:00
0.00
0.00
10
8138.00
8139.00
8138.00
0.00
9000.00
861.00
1.00
5.65
5.65
8138.37
0.37
0.00
0.63
8138.03
0.03
0 11:58
0 00:00
0.00
0.00
11
8135.00
8136.00
8135.00
0.00
9000.00
864.00
1.00
5.50
0.00
8135.15
0.15
0.00
0.85
8135.00
0.00
0 11:58
0 00:00
0.00
0.00
12
8136.00
8137.00
8136.00
0.00
9000.00
863.00
1.00
4.11
4.11
8136.36
0.36
0.00
0.64
8136.03
0.03
0 11:58
0 00:00
0.00
0.00
13
8135.00
8136.00
8135.00
0.00
9000.00
864.00
1.00
4.04
0.00
8135.16
0.16
0.00
0.84
8135.00
0.00
0 11:58
0 00:00
0.00
0.00
14
8129.55
8134.00
8129.55
0.00
9000.00
866.00
1.00
7.71
0.00
8130.48
0.93
0.00
4.32
8129.60
0.05
0 12:01
0 00:00
0.00
0.00
15
8132.30
8135.00
8132.30
0.00
9000.00
865.00
1.00
0.01
0.00
8132.33
0.03
0.00
2.72
8132.32
0.02
1 00:36
0 00:00
0.00
0.00
16
8125.50
8127.50
8125.50
0.00
9000.00
872.50
1.00
0.01
0.00
8125.51
0.01
0.00
1.99
8125.51
0.01
1 00:36
0 00:00
0.00
0.00
17
8134.00
8135.00
8134.00
0.00
9000.00
865.00
1.00
3.44
0.00
8134.13
0.13
0.00
2.12
8134.00
0.00
0 12:01
0 00:00
0.00
0.00
18
8132.00
8132.25
8132.00
0.00
9000.00
867.75
1.00
5.76
0.00
8132.20
0.20
0.00
1.80
8132.00
0.00
0 11:59
0 00:00
0.00
0.00
19
8134.00
8135.00
8134.00
0.00
9000.00
865.00
1.00
2.31
0.00
8134.09
0.09
0.00
3.91
8134.00
0.00
0 12:06
0 00:00
0.00
0.00
20
8134.00
8135.00
8134.00
0.00
9000.00
865.00
1.00
4.57
0.00
8134.27
0.27
0.00
0.73
8134.01
0.01
0 12:07
0 00:00
0.00
0.00
21
8138.00
8139.00
8138.00
0.00
9000.00
861.00
1.00
4.82
4.82
8138.36
0.36
0.00
0.64
8138.02
0.02
0 11:58
0 00:00
0.00
0.00
S:\PROJECTS\1311 Hunter Ridge Energy Services \006- Wolf Ranch Compressor Station\Design\ drainage \Wolf Ranch C5 Model Dutput.xlsx Page 5 of 9 11:05 AM 5/7/2013
HUNTER RIDGE ENERGY SERVICES, LLC
WOLF RANCH COMPRESSOR STATION
HYDROLOGY & HYDRAULICS MODEL OUTPUT - WEIRS
SN
Element
ID
From (Inlet)
Node
Invert
Elevation
(ft)
To (Outlet)
Node
Invert
Elevation
(ft)
Type
Flap
Gate
Crest
Elevation
(ft)
Crest
Offset
(ft)
Length
(ft)
Weir
Total
Height
(ft)
Discharge
Coefficient
Peak
Flow
(cfs)
1
P1Weir
8128.25
8129.55
RECTANGULAR
NO
8132.00
3.75
1.33
1.50
3.33
4.65
2
P2 -weir
8132.00
8132.30
RECTANGULAR
NO
8133.75
1.75
1.33
1.00
3.33
0.17
3
P3 -weir
8130.25
8132.00
TRAPEZOIDAL
NO
8131.75
1.50
15.00
0.50
3.33
6.41
4
P4-wier
8132.50
8134.00
TRAPEZOIDAL
NO
8133.75
1.25
5.00
1.00
3.33
3.44
5
P5 -weir
8131.00
8134.00
TRAPEZOIDAL
NO
8134.00
3.00
5.00
1.00
3.33
2.31
Page 6 of 9
S:\PROJE 311 Hunter Ridge Energy Services\006 - Wolf Ranch Compressor Station\Design\drainage\bl Ranch CS Model Output.xlsx 11:05 AM 5/7 3
•
• •
HUNTER RIDGE ENERGY SERVICES, LLC
WOLF RANCH COMPRESSOR STATION
HYDROLOGY & HYDRAULICS MODEL OUTPUT - ORIFICES
SN
Element
ID
Orifice
Type
Orifice
Shape
Circular
Orifice
Diameter
(inches)
Orifice
Invert
Elevation
(ft)
Orifice
Invert
Offset
(ft)
Orifice
Coefficient
Peak
Flow
(cfs)
Time of
Peak
Flow
Occurrence
(days hh:mm)
1
P1 -Orifice -01
SIDE
CIRCULAR
0.38
8128.55
0.30
0.6140
0.01
0 12:01
2
P1 -Orifice -02
SIDE
CIRCULAR
0.38
8128.80
0.55
0.6140
0.01
0 12:01
3
P1 -Orifice -03
SIDE
CIRCULAR
0.38
8129.05
0.80
0.6140
0.01
0 12:01
4
P1 -Orifice -04
SIDE
CIRCULAR
0.38
8129.30
1.05
0.6140
0.01
0 12:01
5
P2 -Orifice -01
SIDE
CIRCULAR
0.50
8132.30
0.30
0.6140
0.01
1 00:35
6
P2 -Orifice -02
SIDE
CIRCULAR
0.50
8132.55
0.55
0.6140
0.01
1 00:35
Page 7 of 9
S:\PROJECTS\1311 Hunter Ridge Energy Services\006 - Wolf Ranch Compressor Station\Design\drainage\Wolf Ranch CS Model Output.xlsx 11:05 AM 5/7/2013
HUNTER RIDGE ENERGY SERVICES, LLC
WOLF RANCH COMPRESSOR STATION
HYDROLOGY & HYDRAULICS MODEL OUTPUT - RAIN GAGE
SN
Element
ID
Data
Source
Data
Source
ID
Rainfall
Type
Rain
Units
State
County
Return
Period
(years)
Rainfall
Depth
(inches)
Rainfall
Distribution
1
Garfield Co 100 yr 24 hr
Time Series1
Garfield County 100 year 24 hour
Cumulative
inches
Colorado
Garfield
100
2.6
SCS Type II 24 -hr
Page 8 of 9
S:\PROJE311 Hunter Ridge Energy Services\006 - Wolf Ranch Compressor Station\Design\drainage\Wolf Ranch odel Output.xlsx 11:05 AM 113
•
HUNTER RIDGE ENERGY SERVICES, LLC
WOLF RANCH COMPRESSOR STATION
HYDROLOGY & HYDRAULICS MODEL OUTPUT SUBBASINS
•
•
SN
Element
ID
Area
(acres)
Drainage
Node ID
Weighted
Curve
Number
Average
Slope
(%)
Equivalent
Width
(ft)
Impervious
Area
(%)
Impervious
Area
No
Depression
(%)
Impervious
Area
Depression
Depth
(inches)
Impervious
Area
Manning's
Roughness
Pervious
Area
Depression
Depth
(inches)
Pervious
Area
Manning's
Roughness
Total
Precipitation
(inches)
Total
Runon
(inches)
Total
Evaporation
(inches)
Total
Infiltration
(inches)
Total
Runoff
(inches)
Peak
Runoff
(cfs)
Time
of
Concentration
(days hh:mm:ss)
Qpeak/Acre
(cfs/acre)
1
P1 -Basin
2.27
64
91.00
1.0000
192.49
5.00
25.00
0.1000
0.0100
0.1500
0.0150
2.60
0.00
0.0000
0.7800
1.77
6.00
0 00:30:04
2.6
2
P2 -Basin
2.63
64
91.00
1.5000
281.99
10.00
25.00
0.1000
0.0100
0.1500
0.0150
2.60
0.00
0.0000
0.7390
1.81
7.58
0 00:22:22
2.9
3
P3-8asin
2.15
64
91.00
1.0000
177.32
5.00
25.00
0.1000
0.0100
0.1500
0.0150
2.60
0.00
0.0000
0.7800
1.77
5.65
0 00:30:34
2.6
4
P4 -Basin
1.52
64
91.00
1.5000
119.54
5.00
25.00
0.1000
0.0100
0.1500
0.0150
2.60
0.00
0.0000
0.7800
1.77
4.11
0 00:27:50
2.7
5
P5 -Basin
1.75
64
91.00
1.5000
155.01
5.00
25.00
0.1000
0.0100
0.1500
0.0150
2.60
0.00
0.0000
0.7800
1.77
4.82
0 00:25:55
2.8
6
Sub -22
0.41
64
84.00
20.0000
28.99
0.00
25.00
0.1000
0.0100
0.1000
0.1000
2.60
0.00
0.0000
1.1650
1.39
0.66
0 00:43:40
1.6
7
Sub -23
0.60
64
84.00
20.0000
50.96
0.00
25.00
0.1000
0.0100
0.1000
0.1000
2.60
0.00
0.0000
1.1630
1.39
1.04
0 00:39:23
1.7
Page 9 of 9
S:\PROJECT5\1311 Hunter Ridge Energy Services \006- Wolf Ranch Compressor Station \ Design \ drainage \Wolf Ranch C5 Model Output xlsx 1195 AM 5/7/2013
PROJECT NAME Wolf Ranch Compressor Station
RIP -RAP OUTLET PROTECTION SIZING - Pond 1 Outlet
REQUIRED INFORMATION:
v=
4=
D0 =
TW =
8.5
7.71
1.5
0.78
ft/sec Velocity (See Table 805 in the SWMM to verify rip -rap is required)
ft3/sec Pipe Discharge
ft Maximum Inside Culvert Width
ft Tailwater Depth (Use normal depth in pipe if unknown)
*See Figure 1209 of the SWMM for a Rip -Rap Mat Diagram
D50 = (0.02 *Q413) / (TW * Do) D50 = Median rock size (ft)
D50 = 0.3 ft
If TW < D0/2:
3 inches
DETERMINE REQUIRED APRON LENGTH, La:
La = [(1.8 * Q) / (D0312)] + 7D0
La = 18.05
DETERMINE REQUIRED APRON TOP WIDTH, WT:
WT= 3.0*Do
WT = 4.50
DETERMINE REQUIRED APRON BOTTOM WIDTH, WB:
WB= 3.0*Do+La
WB = 22.55
If TW z D12:
DETERMINE REQUIRED APRON LENGTH, La:
La = [(3.0 * Q) / (D0312)] + 7D0
La= ,.,.H",.
DETERMINE REQUIRED APRON TOP WIDTH, WT:
WT= 3.0*Do
WT
DETERMINE REQUIRED APRON BOTTOM WIDTH, WB:
WB= 3.0*D0+0.4*La
WB = 13i4
•
You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com)
PROJECT NAME Wolf Ranch Compressor Station
RIP -RAP OUTLET PROTECTION SIZING - Pond 2 Outlet
REQUIRED INFORMATION:
V=
Q=
D0 =
TW
3.31
0.01
1.5
0.015
ft/sec Velocity (See Table 805 in the SWMM to verify rip -rap is required)
ft3/sec Pipe Discharge
ft Maximum Inside Culvert Width
ft Tailwater Depth (Use normal depth in pipe if unknown)
*See Figure 1209 of the SWMM for a Rip -Rap Mat Diagram
D50 = (0.02 *Q413) / (TW * D0) D50 = Median rock size (ft)
D50 = 0.O ft
If TW < D0/2:
0 inches
DETERMINE REQUIRED APRON LENGTH, La:
La = [(1.8 * Q) / (D03/2)) + 7D0
La = 10.51
DETERMINE REQUIRED APRON TOP WIDTH, WT:
WT= 3.0*Do
WT = 4.50
DETERMINE REQUIRED APRON BOTTOM WIDTH, WB:
WB= 3.0*Do+La
WB = 15.01
If TW 2 Do/2:
DETERMINE REQUIRED APRON LENGTH, La:
La = [(3.0 * Q) / (D031211 + 7Do
La = '10.52
DETERMINE REQUIRED APRON TOP WIDTH, WT:
WT= 3.0*Do
WT =
DETERMINE REQUIRED APRON BOTTOM WIDTH, WB:
WB = 3.0*Do+ 0.4*La
WB = 8.71
You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com)
•PROJECT NAME Wolf Ranch Compressor Station
RIP -RAP OUTLET PROTECTION SIZING - Culvert 1 (south)
REQUIRED INFORMATION:
V = 5.06 ft/sec Velocity (See Table 805 in the SWMM to verify rip -rap is required)
Q= 0.66 ft3/sec Pipe Discharge
Do = 1.5 ft Maximum Inside Culvert Width
TW = , 0.2 ft Tailwater Depth (Use normal depth in pipe if unknown)
*See Figure 1209 of the SWMM for a Rip -Rap Mat Diagram
D50 = (0.02 *Q4/3) / (TW * D0) D50 = Median rock size (ft)
DB0= 0.0ft
If TW < Do/2:
0 inches
DETERMINE REQUIRED APRON LENGTH, La:
La = [(1.8 * Q) / (D.312)] + 7Do
La = 11.15
DETERMINE REQUIRED APRON TOP WIDTH, WT:
WT= 3.0*Do
WT = 4.50
DETERMINE REQUIRED APRON BOTTOM WIDTH, WB:
WB = 3.0*Do + La
WB = 15.65
If TW 2 Do/2:
DETERMINE REQUIRED APRON LENGTH, La:
La = [(3.0 * Q) / (D03/2)) + 7Do
La ='ASV
DETERMINE REQUIRED APRON TOP WIDTH, WT:
WT= 3.0*Do
WT = MID
DETERMINE REQUIRED APRON BOTTOM WIDTH, WB:
WB= 3.0*Do+0.4*La
WB ='9
You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com)
PROJECT NAME Wolf Ranch Compressor Station
RIP -RAP OUTLET PROTECTION SIZING - Culvert 2 (north)
REQUIRED INFORMATION:
V=
Q=
Do =
TW =
5.17
1.04
1.5
0.26
ft/sec Velocity (See Table 805 in the SWMM to verify rip -rap is required)
ft3/sec Pipe Discharge
ft Maximum Inside Culvert Width
ft Tailwater Depth (Use normal depth in pipe if unknown)
*See Figure 1209 of the SWMM for a Rip -Rap Mat Diagram
Dso = (0.02 *Q413) / (TW * Do) D50 = Median rock size (ft)
Dso = 0.1 ft
IfTW<Dj2:
1 inches
DETERMINE REQUIRED APRON LENGTH, La:
La = [(1.8 * Q) / (D.312)) + 7D0
La = 11.52
DETERMINE REQUIRED APRON TOP WIDTH, WT:
WT= 3.0*D0
WT = 4.50
DETERMINE REQUIRED APRON BOTTOM WIDTH, WB:
WB = 3.0*Do + La
WB = 16.02
If TW 2 Do/2:
DETERMINE REQUIRED APRON LENGTH, La:
La = [(3.0 * Q) / (D03"2)] + 7Do
La
DETERMINE REQUIRED APRON TOP WIDTH, WT:
WT= 3.0*Do
WT =
MNIA
DETERMINE REQUIRED APRON BOTTOM WIDTH, WB:
WB= 3.0*Do + 0.4*La
WB = 9.38
You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com)
•
•
•
APPENDIX B
•
NRCS Web Soil Survey
•
•
39° 41' 34"
39° 41' 15"
746670 746 70
Hydrologic Soil Group—Rifle Area, Colorado, Parts of Garfield and Mesa Counties
(Wolf Ranch (E24 496) Compressor Station)
746740
746810
746880
746950
747220
io
0
747290
n
st
M M
co co
o co
V O
O O
M W
0) .; V 0)
.‘r a
N V N
I,-
00)
- a �` Jj �`*l M
O
] % O
746'670
in
N
A 0 25 50
0 100 200
746'740
746810
Map Scale: 1:2,800 8 printed on A size (8.5" x 11") sheet.
USA Natural Resources
11111111 Conservation Service National Cooperative Soil Survey
100
746880
Meters
150
400
Feet
600
Web Soil Survey
746950
747020
39° 41' 34"
39" 41' 15"
747090
O
3/27/2013
Page 1 of 4
Hydrologic Soil Group—Rifle Area, Colorado, Parts of Garfield and Mesa Counties
(Wolf Ranch (E24 496) Compressor Station)
MAP LEGEND
Area of Interest (AO1)
Area of Interest (AOI)
Soils
Soil Map Units
Soil Ratings
0 A
0 ND
B
B/D
0
® CID
E
Not rated or not available
Political Features
• Cities
Water Features
Streams and Canals
Transportation
4.1-4- Rails
MAP INFORMATION
Map Scale: 1:2,800 if printed on A size (8.5" x 11") sheet.
The soil surveys that comprise your AOl were mapped at 1:24,000.
Waming: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil line
placement. The maps do not show the small areas of contrasting
soils that could have been shown at a more detailed scale.
Please rely on the bar scale on each map sheet for accurate map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: http://websoilsurvey.nres.usda.gov
Coordinate System: UTM Zone 12N NAD83
This product is generated from the USDA-NRCS certified data as of
the version date(s) listed below.
Soil Survey Area: Rifle Area, Colorado, Parts of Garfield and Mesa
Counties
Survey Area Data: Version 6, Mar 25, 2008
Date(s) aerial images were photographed: 8/8/2005; 7/21/2005
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor shifting
•%.. Interstate Highways of map unit boundaries may be evident.
US Routes
Major Roads
Local Roads
USDA Natural Resources
Conservation Service
Web Snil Survey
National Co-tive Soil Survey
3/27/2013
Page 2 of 110
•
Hydrologic Soil Group -Rifle Area, Colorado, Parts of Garfield and Mesa
Counties
Wolf Ranch (E24 496) Compressor Station
Hydrologic Soil Group
Hydrologic Soli Group— Summary by Map Unit — Rifle Area, Colorado, Parts of Garfield and Mesa Counties (C0683)
Map unit symbol
Map unit name
Rating
Acres In AO1
Percent of AO1
38
Irigul-Starman channery loams, 5
to 50 percent slopes
D
3.1
14.3%
53
Parachute -Rhone loams, 5 to 30
percent slopes
B
15.6
72.6%
61
Rhone loam, 30 to 70 percent
slopes
B
2.8
13.0%
Totals for Area of Interest
21.5
100.0%
Description
Hydrologic soil groups are based on estimates of runoff potential. Soils are
assigned to one of four groups according to the rate of water infiltration when the
soils are not protected by vegetation, are thoroughly wet, and receive precipitation
from long -duration storms.
The soils in the United States are assigned to four groups (A, B, C, and D) and
three dual classes (A/D, B/D, and C/D). The groups are defined as follows:
Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly
wet. These consist mainly of deep, well drained to excessively drained sands or
gravelly sands. These soils have a high rate of water transmission.
Group B. Soils having a moderate infiltration rate when thoroughly wet. These
consist chiefly of moderately deep or deep, moderately well drained or well drained
soils that have moderately fine texture to moderately coarse texture. These soils
have a moderate rate of water transmission.
Group C. Soils having a slow infiltration rate when thoroughly wet. These consist
chiefly of soils having a layer that impedes the downward movement of water or
soils of moderately fine texture or fine texture. These soils have a slow rate of water
transmission.
Group D. Soils having a very slow infiltration rate (high runoff potential) when
thoroughly wet. These consist chiefly of clays that have a high shrink -swell
potential, soils that have a high water table, soils that have a claypan or clay layer
at or near the surface, and soils that are shallow over nearly impervious material.
These soils have a very slow rate of water transmission.
If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is
for drained areas and the second is for undrained areas. Only the soils that in their
natural condition are in group D are assigned to dual classes.
USDA Natural Resources
am—
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
3/27/2013
Page 3 of 4
Hydrologic Soil Group—Rifle Area, Colorado, Parts of Garfield and Mesa Wolf Ranch (E24 496) Compressor Station
Counties
Rating Options
Aggregation Method: Dominant Condition
Component Percent Cutoff. None Specified
Tie-break Rule: Higher
USDA Natural Resources Web Soil Survey 3/27/2013
Page 4 of 4
Conservation Service National Cooperative Soil Survey
•
39° 41' 34"
39° 41' 15"
K Factor, Whole Soil—Rifle Area, Colorado, Parts of Garfield and Mesa Counties
(Wolf Ranch (E24 496) Compressor Station)
m
O
0
0
108 T 25'
N
A
39° 41' 34"
39°41' 15"
746810 746880 746950 747020
Map Scale: 1:2,800 if printed on A size (8.5" x 11") sheet
0 25 50
100
Meters
150
0 100 200
USDA Natural Resources
Conservation Service
400
Feet
600
Web Soil Survey
National Cooperative Soil Survey
747090
0
3/27/2013
Page 1 of 3
K Factor, Whole Soil—Rifle Area, Colorado, Parts of Garfield and Mesa Counties
(Wolf Ranch (E24 496) Compressor Station)
MAP LEGEND
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Map Units
Soil Ratings
® .02
• .o5
.10
0 .15
0 .17
.20
0 .24
0 .28
Q .32
0 .37
0 .43
.49
® .55
® .64
Not rated or not available
Political Features
• Cities
Water Features
Streams and Canals
Transportation
.h,F Rads
Interstate Highways
US Routes
Major Roads
Local Roads
MAP INFORMATION
Map Scale: 1:2,800 if printed on A size (8.5" x 11") sheet.
The soil surveys that comprise your AOI were mapped at 1:24,000.
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil line
placement. The maps do not show the small areas of contrasting
soils that could have been shown at a more detailed scale.
Please rely on the bar scale on each map sheet for accurate map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: http://websoilsurvey.nres.usda.gov
Coordinate System: UTM Zone 12N NAD83
This product is generated from the USDA-NRCS certified data as of
the version date(s) listed below.
Soil Survey Area: Rifle Area, Colorado, Parts of Garfield and Mesa
Counties
Survey Area Data: Version 6, Mar 25, 2008
Date(s) aerial images were photographed: 8/8/2005; 7/21/2005
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor shifting
of map unit boundaries may be evident.
USDA Natural Resources
•
Conservation Service
Webil Survey
National C tive Soil Survey
3/27/2013
Page 2 of •
K Factor, Whole Soil—Rifle Area, Colorado, Parts of Garfield and Mesa Counties Wolf Ranch (E24 496) Compressor Station
K Factor, Whole Soil
K Factor, Whole Soil— Summary by Map Unit — Rifle Area, Colorado, Parts of Garfield and Mesa Counties (C0683)
Map unit symbol
Map unit name
Rating
Acres in A01
Percent of AOl
38
Irigul-Starman channery loams, 5
to 50 percent slopes
.15
3.1
14.3%
53
Parachute -Rhone loams, 5 to 30
percent slopes
.20
15.6
72.6%
61
Rhone loam, 30 to 70 percent
slopes
.20
2.8
13.0%
Totals for Area of Interest
21.5
100.0%
Description
Erosion factor K indicates the susceptibility of a soil to sheet and rill erosion by
water. Factor K is one of six factors used in the Universal Soil Loss Equation (USLE)
and the Revised Universal Soil Loss Equation (RUSLE) to predict the average
annual rate of soil loss by sheet and rill erosion in tons per acre per year. The
estimates are based primarily on percentage of silt, sand, and organic matter and
on soil structure and saturated hydraulic conductivity (Ksat). Values of K range from
0.02 to 0.69. Other factors being equal, the higher the value, the more susceptible
the soil is to sheet and rill erosion by water.
"Erosion factor Kw (whole soil)" indicates the erodibility of the whole soil. The
estimates are modified by the presence of rock fragments.
Rating Options
Aggregation Method: Dominant Condition
Component Percent Cutoff. None Specified
Tie-break Rule: Higher
Layer Options: Surface Layer
USDA Natural Resources Web Soil Survey 3/27/2013
diral Conservation Service National Cooperative Soil Survey Page 3 of 3
4000
O 2000 4000
1 IN FEET 1
1 INCH : 4000 FT.
1000
LEGEND
ENCANA OIL & GAS (USA) INCE
Parcel No. 191727400012
"trilat
`allW
.�Ar1- -
If"
�.
River / Stream
Rood / Trail
Section Line
Parcel Line
Township Line
Project Site
Project Parcel
Private Roads
Project Location
'-21 Miles To Porochute
I
FNCANA MI & OAS (USA) INC - Parrot 4101707400012 Legn1 Deserbtion 1,-15800 AC) (taken from Garfield Co. Websilel
Section: 19 Township: 4 Ronge: 95 SEC 19, LOTS 1 (40.14 AC). 2 (40.21 AC), 3, (40.29 AC). 4 (40.36 AC), E1/2W1/2, El/2.
Section: 20 Township: 4 Ronge: 95 LOTS 1(40.51 AC), 2(40.42 AC), 3(40.44 AC) 4(40.53 AC). 11I/2, 0E1/4 Section: 21
Township: 4 Range: 95 NEI/4.NENW, W1/2SW, 61/25E, 5ESE Section: 22 Township: 4 Range: 95 E2 Section: 23 Township: 4
Ronge: 95 02, W2W2, NENW Section: 24 Township: 4 Range: 95 ALL Section: 25 Township: 4 Range: 95 ALL Section: 26
Township: 4 Range: 95 ALL Section: 27 Township: 4 Range: 95 ALL Section: 28 Township: 4 Ronge: 95 LOTS 1(40.44AC),
2(40.37AC). 3(40.35AC), NENE. 02NE, S2 Section: 29 Township: 4 Ronge: 95 ALL Section: 30 Township: 4 Range: 95 LOTS
1(40.33AC), 2(40.21A0), 3(40.07AC) 4(39.9440), E2W2, E2 Section: 31 Township: 4 Range: 95 LOTS 3(40.10AC), 4(39.82AC).
5(39.4240). 6(39.140C). E2W2. E2 Section: 32 Township: 4 Ronge: 95 ALL Section: 33 Township: 4 Ronge: 95 ALL Section: 34
Townehip: 4 Ronge: 95 112, SE Section: 35 Township: 4 Ronge: 95 ALL
UNCC
DWZDFETIreaD Knew Weft beim
Call
CALL 2 BUSINESS DAYS 6 ADVANCEBEF�
IYOU
DIG, GRADE, OR EXCAVATE FON THE MARKING OF
UNDERGROUND MEMBER UTILITIES.
REVISIONS
Mesa County
NOTES:
1. THE LOCATIONS OF UNDERGROUND UTILITIES AS SHOWN HEREON ARE BASED ON VISIBLE EVIDENCE FROM ABOVE GROUND STRUCTURES, MARKINGS BY THE RESPECTIVE UTILITY COMPANIES AND/a9 THEIR LOCATOR
SERVICES. AND DRAWINGS PROVIDED BY THE UTILITY COMPANIES. NO EXCAVATIONS WERE MACE DURING THIS SURVEY TO DETERMINE THE EXACT LOCATIONS AND DEPTHS OF THE UNDERGROUND UTIUTIES AND
STRUCTURES. ACTUAL LOCATION MAY VARY SLIGHTLY FROM THOSE SHOWN HEREON AND ADDITIONAL UNDERGROUND UTILITIES MAY EXIST. EXISTENCE AND LOCATIONS OF ALL UNDERGROUND UTIUIES AND STRUCTURES
SHOULD BE VERIFIED PRIOR TO ANY CONSTRUCTION ON THIS PROPERTY.
2. COSTING SURVEY INFORMATION (INCLUDING EXISTING UTILITIES) PROVIDED BY UINTAH 86049004195 & LAND SURVEYING.
3. PROPOSED EQUIPMENT AND PAD LAYOUT PRO1DED BY ENCANA AND BASED ON DRAWINGS DONE BY KAHUNA VENTURES, LLC..
4. PARCEL INFORMATION I5 FROM THE GARFIELD COUNTY GIS WEBSITE.
5. CONSTRUCTION SHALL BE IN ACCORDANCE MOUTH ALL RECOMMENDATIONS MADE V HAN THE NTH AND ASSOCIATES, INC. GEOTECHNICAL INVESTIGATION REPORT AND ALL SUBSEQUENT ADDENDUMS TO SAID REPORT. FILL
PLACEMENT AND COMPACTION SHALL BE AS RECOMMENDED IN THE REPORT OR IN THE A804111E OF A SPECIFIC RECOMMENDATION ViTHIN THE REPORT, AS PER COOT SPECIFICATIONS AND STANDARDS.
6. THE PROJECT IS LOCATED WITHIN A -15,800 ACRE PARCEL, / 191727400012, WHICH IS OWNED BY ENCANA OIL AND GAS (USA) INC. IN MORE LEGAL TERMS, IT IS LOCATED IN THE NORTHWEST Y. OF SECTION 24,
TOWNSHIP 4 SOUTH. RANGE 98 VEST OF THE 6104 PRINCIPAL MERIDIAN, 090010LD COUNTY, COLORADO. THE PROJECT AREA IS EQUAL TO THE ESTIMATED TOTAL AREA OF DISTURBANCE 9111CH IS APPROXIMATELY 15.1
ACRES. THE TOTAL AREA TO BE RE -VEGETATED I5 APPROXIMATELY 2.6 ACRES.
7. ACCORDING TO THE NRCS NEB SITE, THE UPPER LAYER OF SOIL PRESENT AT THE PROJECT SITE CONSISTS OF IRIGUL-STARMAN CHANNERY LOMAS (5-50% SLOPES) (14.3%), PARACHUTE -RHONE LOAM5 (5-300 SLOPES)
(72.69). AND RHONE LOANS (30-709 SLOPES) (13.01. THESE SOILS HAVE HYDROLOGIC SOIL CLASSIFICATIONS OF D (HIGH RUNOFF POTENTIAL) (14.39) AND B (LOW TO MODERATE RUNOFF POTENTIAL) (85.7%). THE
VA -1011 SOIL EROSION K FACTOR FOR THESE SOILS IS BETWEEN 0.15 AND 0.20, MEANING THESE SOILS ARE MRD TO MODERATELY EROSIVE.
8. EXISTING VEGETATION ON THE SITE CONSISTS PRIMARILY OF HIGH PLATEAU VEGETATION (OAK BRUSH, SAGE, MOUNTAIN MAHOGANY, GRASSES, ETC.). UNDISTURBED PORTIONS OF THE SITE ARE 80-90% VEGETATED.
9. THIS SITE IS LOCATED 9111411 "RESOURCE LAND' ZONING.
10. BASIS OF BEARING: BEARINGS SHOWN HEREON ARE BASED ON THE LINE BETWEEN THE WEST QUARTER CORNER AND THE SOUTHWEST CORNER OF SECTION 24, TOWNSHIP 4 SOUTH, RANGE 96 WEST OF THE 619 PRINCIPLE
MERIDIAN. ELEVATIONS SHOWN HEREON ARE BASED UPON NAVTI 29. COORDINATE DATA SHOWN HEREON IS BASED UPON A LOCAL COORDINATE SYSTEM DEVELOPED BY UINTAH ENGINEERING & LAND SURVEWNG.
11. BUILDINGS, FOUNDATIONS, PIPING, ETC. DESIGNED BY OTHERS.
12. NO EXISTING 801102955. DRIVEWAYS, OR PARKING AREAS ARE LOCATED ON-STE AND NO BUILDINGS ARE PURPOSED WITHIN 250' OF THE NEAREST PROPERTY LINE. WHICH 15 -350 FEET NORTH OF THE STE.
13. FENCING HILL NOT BE INSTALLED AT THIS FACILITY. THE SURROUNDING GEOGRAPHIC RELIEF AND REMOTE LOCATION ISOLATE IT FROM HUMANS AND THE SECONDARY CONTAINMENT WALLS AND BUILDINGS WILL PROVI0E A
%ILEUFE BARRIER.
14. THIS SITE IS NOT MANNED FULL TIME AND NO WATER OR WASTEWATER FACILITIES ARE PLANNED FOR THIS SITE.
15. STAKING INFORMATION TO BE PROVIDED TO SURVEYOR/CONTRACTOR BY RIVER CITY CONSULTANTS. PLEASE CONTACT RIVER CITY CONSULTANTS TO OBTAIN THE INFORMATION.
16. THE ORIGINAL DRAWING SIZE 15 22' X 34',
N0.
DATE
DESCRIPTION
BY
HUNTER RIDGE
ENERGY SERVICES LLC
aillinlIllL
C O N S U L T A N T S
744 Horizon 00,10 507e 110 Panne:040.241.4722
Oland I,4r1 on 00 01016 Fee. 070 2440041
RIVER CITY
Hunter Ridge Energy Services LLC
Wolf Ranch Compressor Station
Site Plan Map
PROJECT A1311-006
SCALE
DRAWN BY: nmr
CHECKED BY: mit
HORIZ: 1' - 4000'
VERT: N/A
DATE ISSUED: 05.07.13
SHEET N0. 1 OF 2 SHEETS
1
60
12a
IN FEET I
I INCH = 60 FT. i /•'
CONTOUR INTERVAL = 1 FOOT 'moi jam•'_
N 0
Op U
- -
= --_ - -
'6150
1
1
1
1
1
I EN ,/1
TV\
�,�0
A •
/ /
/ /
I /
/ /
/ ,/
i
jr' EVB -1
• 1
1.
4001 - \
r �
7
\
1,4ss,\\• '
/
/
\ v \ \ \\\ . •• \ \\•\
\�.\• •\\\\\\\\\\\•
\ \ \\ \\ \\ \ \\ \ \\ \,
6130
GENERAL NOTES
SITE DESCRIPTION
1. 51111P ADMINISTRATOR (LOCAL CONTACT): KATHY VER112 (970) 285-2626. 1.
2. THE PROJECT AREA 15 EOIAL TO THE ESTIMATED TOTAL AREA OF DISTURBANCE WHICH I5 APPROXIMATELY 15.1 ACRES. THE
TOTAL AREA TO BE RE -VEGETATED I5 APPROXIMATELY 2.6 ACRES,
3. AT ALL 11605 DURING CONSTRUCTION, EROSION AND SEDIMENT CONTROL SHALL BE MAINTAINED BY THE CONTRACTOR.
4. EROSION CONTROL MEASURES SHALL BE INSTALLED A5 THE WORK (GRADING) PROGRESSES.
5. DETAILS SHOWN ARE SCHEMATIC ONLY. ADJUSTMENTS MAY BE NECESSARY TO FIT ACTUAL FIELD CONDITIONS.
6. EXISTING VEGETATION 011 BE REMOVED WITH A 01000AXE OR OTHER APPROVED METHOD, CHIPPED AND MIXED INTO THE
TOPSOIL
7. NEGATIVE IMPACTS TO DOWN5IREAM AREAS (0R RECEIVING WATERS) CAUSED BY EARTHWORK AND/0R CONSTRUCTION TO BE
MONITORED AND CORRECTED BY THE CONTRACTOR.
8 THE FIRST BMP TO BE INSTALLED ON THE SITE SHALL BE CONSTRUCTION FENCE. MARKERS, OR OTHER APPROVED MEANS OF
DEFINING THE OMITS OF CONSTRUCTION.
9. NATURAL. VEGETATION SHALL BE RETAINED AND PROTECTED WHEREVER POSSIBLE. EXPOSURE 06 SOL TO EROSION BY
REMOVAL OR DISTURBANCE OF VEGETATION SHALL BE LIMITED TO THE AREA REOORED FOR IMMEDIATE CONSTRUCTION
OPERATIONS
10. ALL CONSTRUCTION TRAFFIC MUST ENTER/EXIT THE SITE THROUGH THE SYAAP-APPROVED ACCESS POINTS.
11. THE LOCATORS OF UNDERGROUND UTILITIES A5 51101131 HEREON ARE BA5E0 ON VISIBLE EVIDENCE FROM ABOVE GROUND 6
STRUCTURES. MARKINGS BY THE RESPECTIVE UTILITY COMPANIES AND/OR THEIR LOCATOR SERVICES, AND DRAWINGS PROVIDED
BY THE UTILITY COMPANIES. NO EXCAVATIONS WERE MADE DURING THIS SURVEY TO DETERMINE EXACT LOCATIONS AND 7
DEPTHS OF 01(DERGROUND UTILITIES AND STRUCTURES. ACTUAL LOCATIONS MAY VARY SLIGHTLY FROM THOSE AS SHOWN
HEREON AND ADDITIONAL UNDERGROUND UTILITIES MAY EXIST. EXISTENCE AND LOCATIONS OF ALL UNDERGROUND UTILITIES 6
AND STRUCTURES SHOULD BE VERIFIED PRIOR TO ANY CONSTRUCTOR( ON THIS PROPERTY.
12. EXISTING SURVEY INFORMATION (INCLUDING EXISTING UTUTIES) PROVIDED BY UINTAH ENGINEERING AND LAND SURVEYING
3. BASIS OF BEARING: BEARINGS SHOWN HEREON ARE BASED ON THE UNE BETWEEN THE WEST QUARTER CORNER AND THE
SOUTHWEST CORNER Qi SECTOR 24, TO6M5HIP 4 SOUTH. RANGE 96 WEST OF THE 6TH PRINCIPLE MERIDIAN. ELEVATIONS
SHOWN HEREON ARE BASED UPON NAV) 29. COORDINATE DATA SHOWN HEREON I5 BASED UPON A LOCAL COORONAIE
SYSTEM DEVELOPED BY 0111141 ENGINEERING & LAND SURVEYING.
14. ORIGINAL DRAWING SIZE I5 20X34•.
2.
3.
4.
5.
,/
ME PROJECT IS WHOLLY WITHIN PARCEL 1 191727400012, WHICH 15 OWNED BY ENCANA OL AND GAS (USA). IN MORE LEGAL
TERMS, IT 15 LOCATED IN THE NORTHWEST LL OF SECTION 24, TOWNSHIP 4 SOUTH, RANGE 96 WEST 06 THE 6TH PRINCIPAL
MERIDIAN, GARFIELD COUNTY. COLORADO.
ACCORDING TO THE 54605 WEB SITE, THE UPPER LAYER OF SOL PRESENT AT THE PROJECT SITE CONSISTS 06
IRIGUL-STARMAN CHANNERY LOMAS (5-50% SLOPES), PARACHUTE -RHONE LOMAS (5-30% SLOPES), AND RHONE LOAM
(30-70% SLOPES). THESE SOLS HAVE HYDROLOGIC 506 CLASSIFICATIONS OF D (HIGH RUNOFF POTENTIAL) AND B (LOW TO
MODERATE RUNOFF POTEN0AL). THE 65101E SOL EROSION K FACTOR FOR THESE SOLS VARIES BETWEEN 0.15 AND 0.2D,
MEANING THESE SOLS ARE MILDLY EROSIVE (LOW POTEN6AL FOR EROSION).
510131AVATER FROM THIS SITE 5ALL BE DISCHARGED FROM 111E SITE THROUGH A SERIES 06 EXISTING AND PROPOSED DITCHES,
CULVERTS. AND SEDIMENT PONDS. DRAINAGE FOR THIS AREA IS TO THE SOUTHWEST. NOR1HIIE5T. AND EAST.
NE RECEIVING BODY OF WATER IS PICEANCE CREEK, APPROXIMATELY 11 MILES DOYMS1REM OF THE SITE.
CONSTRUCTION ACTIVITY WILL 001451ST OF. IN THE FOLLOWING ORDER: ESTABLISHMENT OF PERIMETER ST0141861ER BLIPS, SITE
CLEARING. TOPSOIL REMOVAL AND STOCKPILING, OVERALL GRADING 00 THE PM AND ROADS. BUILDING/EQUIPMENT
P00/FOUNDATION CONSTRUCTION, UTILITY & EQUIPMENT INSTALLATIONS. BUILDING/EQUIPMENT CONSTRUCTION. AND FINAL
SEEDING. INTERMEDIATE STORMWATER BLIPS MILL BE INSTALLED AND MAINTAINED THROUGHOUT CONSTRUCTION AS REQUIRED BY
THE CONTRACTOR'S MEANS AND METHODS.
THE PRIMARY CONTAMINANT OF CONCERN FOR 0110 SITE 15 SEDIMENT. THE PROPOSED EROSION CONTROLS HAVE BEEN
SELECTED AND PLACED TO MITIGATE THE POTENTIA FOR SEDIMENT TRANSPORT FROM 711E SITE.
EXISTING VEGETATION ON T140 SITE CONSISTS PRIMARILY OF MGH PLATEAU VEGETATION (OM BRUSH, SAGE, MOUNTAIN
MAHOGANY, GRASSES. ETC.). UNDISTURBED PORTIONS OF THE SITE ARE 60-90% VEGETATED.
THE 100 YEAR RUNOFF SCS CURVE NUMBERS FOR THIS SITE ARE 48 FOR UNDEVELOPED AREAS AND 91 FOR DEVELOPED
GRAVEL AREA5.
4'0
UNCC
f<ra ir....iesbelow.
CALL 2 BUSINESS DAYS W IN_�
AOV •66�
IYOU
DIG, GRADE, OR EXCAVATE FOR 751E MARKING 06
UNDERGROUND MEMBER UM15E5.
N0. DATE
EROSION CONTROL MEASURES (PERFORMANCE STANDARDS)
BMP DETAILS PROVIDED IN APPENDIX E OF THE HUNTER RIDGE ENERGY SERVICES LLC MASTER STORMWAIER MANAGEMENT PLAN. THE REQUIREMENTS STATED
IN THE HUNTER RIDGE ENERGY SERVICES 410 MASTER PLAN SHALL OVERRULE ANY CONFLICTING REQUIREMENTS STATED BELOW.
THE GENERAL RECUPEMENI5 FOR EROSION CONTROL WORK SHALL BE AS FOLLOWS:
1. ANY NG SHALL CONDUCTED IN SUCH A MANNER TO EFFECTIVELY REDUCE ACCELERATED SOIL EROSION AND RESULTING SEDIMENTATION.
GRADING BE E
2. ALL ( 00 SHALL BE ACCELERATED
506. CONSTRUCTED. AND COMPLETED60API R MINIMIZE THE DTE AND DURATION W 0 EXPOSED (60456 161 AREA
3. 914810SEDIMENT 060510 BY ACCELERATED 506 EROSION SHALL CONSTRUCTED CAPTURED AND REMOVED YAN PUF W ERTER PRIOR TO LEAVING THE 814
4. ANY TE 66 009 OR PERMANENT FACILITY DESIGNED AND EROSIVFOR THE CONVEYANCE OF WATER MOUND, THROUGH, OR FROM THE GRADED AREA
SHALL TEMPORARY DESIGNED TO IMIT THE WATER FLOW TO A 60 628100 V£LOCItt.
6. L6404,9 SOL EROSION E CONTROL FACIUTES9 SMALL 61 REMOVED AND MEAS GRADED AND STABILIZED WITH PERMANENT SOL EROSION CONTROL MEASURES.
6. ALL (OAPs WILL BE 14 PLACE PRIOR TO ANY MAJOR EARTHWORK.
AFTER CONSTRUCTION (PERMANENT MEASURES)
1, ALL AREAS DIS101100D BY CONSTRUCTION ACTIVITIES SHALL BE REVEGETA1ED WITH A CERTIFIED WEED -FREE NATIVE SEED MIX APPROPRIATE FOR SITE SOLS
AND CONDITIONS. THESE AREAS SHALL BE MAINTAINED UNTIL A VEGETATIVE COVER OR AT LEAST 70% OF PRE -CONSTRUCTION 00NDIT1085 610510. IF
NECESSARY, ADDITIONAL SEED. MULOH, AND/0R FER00ZER SHOULD BE APPLIED TO ESTABLISH SAID VEGETATIVE COVER.
DURING CONSTRUCTION (TEMPORARY MEASURES)
I. MATERIAL STOCKPILES SHALL BE BERKED MOUND MEF PERIMETER TO PREVENT RUNOFF POLLUTION.
2. PLACE WATTLES AND/0R BERM DOWN GRADIENT OF DISTURBED AREAS AND STOCKPILES.
3. COMPACT SOL AND TOPSOIL 10 THE REQUIREMENTS AS STATED IN THE GEOTECHNICAL RECOMMENDATIONS AND FINISH GRADE TO ELEVATIONS SHOWN ON THE
STE PLAN. ELIMINATE ANY LOW SPOTS PRIOR TO FINAL STABILIZATION.
4. CONTRACTOR SHALL HAVE A WATER TRUCK MADE AVAILABLE TO ASSIST IN CONTROLUNG MOISTURE CONTENT AND DUST AND WINO EROSION.
5. SOILS THAT WILL PE STOCKPILED FOR MORE THAN THIRTY (30) DAYS SHALL BE SEEDED AND MULCHED 011146 FOURTEEN (14) DAYS 06 STOCKPILE
CONSTRUCTION. NO STOCKPILES SHALL BE PLACED WITHIN ONE HUNDRED (100) FEET 06 A DRAINAGE WAY UNLESS APPROVED BY THE 0561AP ADMINISTRATOR.
6. ME CLEANING 06 CONCRETE DELIVERY TRUCK CHUTES 15 RESTRICTED TO APPROVED CONCRETE WASH OUT LOCATIONS ON THE JOB SITE. THE DISCHARGE OF
WATER CONTAINING WASTE CONCRETE TO THE STORM SYSTEM IS PROHIBITED. ALL CONCRETE WASTE SHALL BE PROPERLY CLEANED UP AND DISPOSED AT AN
APPROPRIATE LOCATION.
MAINTENANCE
1. ALL EROSION CONTROL MEASURES SHOULD BE INSPECTED TO DETERMINE IF REPAIRS OR SEDIMENT REMOVAL IS NECESSARY. THE MAXIMUM TME BETWEEN
INSPECTIONS SHALT BE 14 DAYS.
2. EROSION CONTROL MEASURES ARE ALSO TO BE INSPECTED WHIN 46 HOURS OF A STORM THAT PRODUCES MODERATE RUNOFF, OR MODERATE SNOW MELT.
3. REPAIRS OR MODIFICATIONS TO 1146 EROSION CONTROL MEASURES SHALL BE COMPLETED IMMEDIATELY. REPAIRS AND MODIFICATIONS SHALL BE DOCUMENTED
(WHAT, WHY. & MIEN).
4. SILT AND SEDIMENT SHALL BE REMOVED IF THERE I5 A RIS( OF SEDIMENT BYPASSING THE EROSION CONTROL FEATURE. SPECIFICALLY, SEDIMENT BUILDUP
SHALL NOT EXCEED 1/3 THE HEIGHT OF ANY CHECK DAM OR BERM (INCLUDING INLET PROTECTION), 1/2 THE HEIGHT OF A WATTLE, OR WHEN SEDIMENT
WITHIN A SEDIMENT BASIN GETS WITHIN 6 INCHES 00 THE OUTLET INVERT.
5. WHEN 114E TEMPORARY MEASURES ARE TO BE REMOVED. ANY 91.1 AND SEDIMENT DEPOSITS SHALL BE REMOVED AND SPREAD EVENLY IN OPEN AREAS AND
SEEDED A5 NECESSARY.
REVISIONS
DESCRIPTION
BY
BMP LEGEND
Instdlotion del0Ns and moIntenonoe guidelines for the above erosion Control me0Wree con be found M Appendls E of the
Ride n Ser LLC Muster S4ormcaler Monagement Plan COOT atontlords on Denver's Urban Droll a end
Hunter 9 Energy Noes 90r^ og
Flood Control mh sDistricttrotor website, o and carious is list Is no consider. complete
from these slondorde shall 44 approved O by the
CSWHP Atl added to 11.prior to 11 Installation. This list Is not should
considered compinte 14 module, appropriately
methods n d
should be for ba to 041 plop if required. This ono MP .Cont be kept current and modified opproprblNy by the CSWIIP
Atlministrolor based on octad Me condilionr and the Contractor's means and methods.
_ASO -ASP--
ANCHORED STRAW BALE
CHECK DAM'
COMPOST BLANKET
CONSTRUCTION FENCE
COMPOST FILTER BERM
CULVERT INLET PROTECTION
0 CONSTRUCTION MARKER
CULVERT OUTLET PROTECTION
CONSTRUCTION SITE BOUNDARY
CONCRETE WASHOUT AREA
DEWATERING
DIVERSION DITCH
EROSION CONTROL BLANKET
EXISTING VEGETATIVE BUFFER
EXISTING VEGETATIVE SWALE
FILTER BERM
HYDRAULIC MULCH
LAND CRAD1NG
LEVEL SPREADER
MATERIALS STORAGE AREA
PROTECT EXISTING VEGETATION
REINFORCED CHECK DAM
ROPE FENCE
RUN ON DIVERSION DITCH
RETENTION POND
RIPRAP / ROCK
REINFORCED ROCK BERM
REINFORCED ROCK BERM FOR CULVERT
PROTECTION
DD
ROAD SIDE DITCH
0 REVEGETATION"
SLASH
($B) O SEDIMENT BASIN
5EOMENT CONTROL LOG / WATTLE
-0-s- 0 SILT FENCE
Q O SURFACE HARDENING
0 SEEDING AND MULCTING
SNOW STORAGE AREA
L SLT BERM
0 SEDIMENT TRAP
1'.•]
.�.-501)-51.16-
-11
TER
O
-n-XI- TS
rL.
-�
SUBSOIL 5T0CKPPLE
TERRACING
TOLET5 (PORTABLE)
TOPSOIL STOCKPILE
TEMPORARY SLOPE DRAIN
TEMPORARY STREAM CROSSING
TOP504. WINDROW W11H TEMPORARY
HYDRAULIC EROSION CONTROL
MULCH
10061084E BUFFER
VEHICLE TRACKING CONTROL
VEHICLE EQUIPMENT & MAINTENANCE
WATER BAR
5510 DITCH
WASTE MANAGEMENT
STRAW WATTLE
VEHICLE TRACKING CONTROL
0111 WHEEL WASH
Check Dams To Be PI0060 In Ditches A Minimum 01 Every Two Feel 0f Verikd R
• (I.e., Al Every 2' Contour)
+ / r
J
COVER 541TH HYDRAULIC MULCH
HUNTER RiDGE
ENERGY SERVICES LLC
%IMPS 11 O'1 (WATER.
SURFACE ROUGHENING, TOPSOIL SPREADING,
BROADCAST SEEDING AMENDMENTS, AND
HYDRAUUC ERO9ON CONTROL MULCH
00001 LFS THAN 3'1:
SURFACE ROUGHENING. TOPSOL SPREADING.
DRILL SEEDING, MO CRIMPED STRAW MULCH
RIVER CITY
C O N S U L T A N T S
744 Nun0On Coud, Sate 110 Peon 910.241.4722
nand lemon Co BMW, Fas' 970 ALCM,
TOPSOIL WINDROW DURING CONSTRUCTION
TOPSOIL WINDROW DURING RECLAMATION
ED 0140 MULCH WNOROW
Hunter Ridge Energy Services LLC
Wolf Ranch Compressor Station
Pre -Construction Stormwater Management Plan
PROJECT /:1311-006 SCALE DATE ISSUED: 05.07.13
DRAWN BY: nmr HORIZ: 1 60
CHECKED BY: mk VERT: SHEET NO. 1 OF 3 SHEETS
12
OIL
`
'334 -
6o
80
1m
.. /,
1 IN FEET 1
I INCH = 60 FT.
CONTOUR INTERVAL = I FOOT, 03
U
C.s
44i1Fv
-
r
a
•
1
1
GENERAL NOTES
,sem"�
Ise%i' � `11
4A/19 111/10, NI,..
�� 1.4;17.1111:1---:=M1---....
25' (Typ.)
1. 5NMP ADMINISTRATOR (LOCAL CONTACT): KATHY VER11Z (970) 285-2626.
2. 114E PROJECT AREA IS EQUAL TO 114E ESTIMATED TOTAL AREA OF DISTURBANCE WHICH IS APPROXIMATELY 15.1 ACRES. THE
TOTAL AREA TO BE RE -VEGETATED 15 APPROXIMATELY 2.6 ACRES
3. AT ALL ORES DURING CONSTRUCTION, EROSION AND SEDIMENT CONTROL SHALL BE MAINTAINED 87 11E CONTRACTOR,
4. EROSION CONTROL MEASURES SHALL BE INSTALLED AS THE WORK (GRADING) PROGRESSES.
S. DETAILS 5H01W4 ARE SCHE4A11C ONLY. ADJUSTMENTS MAY BE NECESSARY TO FIT ACTUAL FIELD CONDITIONS.
6, EXISBNG VEGETATION WILL BE REMOVED WITH A 615800XE OR OTHER APPROVED METRE, CHIPPED AND MIXED INTO THE
TOPSOIL.
7. NEGATIVE IMPACTS TO DOWNSTREAM AREAS (OR RECEIVING WATERS) CAUSED BY EARTHWORK AND/OR CONSTRUCTION TO BE
MONITORED AND CORRECTED 0Y THE CONTRACTOR.
8. THE FIRST BMP TO BE INSTALLED ON 0,10 SITE SHALL BE CONSTRUCTION FENCE, MARKERS, OR OTHER APPROVED MEANS OF
DEERING THE LIMITS OF CONSTRUCTER.
9. NATURAL VEGETATION SHALL BE RETAINED AND PROTECTED WHEREVER P059BLE. EXPOSURE OF SOIL TO EROSION BY
REMOVAL OR DISTURBANCE OF VEGETATION SHALL BE LIMITED TO THE AREA REQUIRED FOR IMMEDIATE CONSTRUCTION
OPERATIONS.
10. ALL CONSTRUCTION TRAFFIC MUST ENTER/EMT THE SITE THROUGH THE SNAP -APPROVED ACCESS POINTS.
11. THE LOCATIONS OF UNDERGROUND UTIUTIE5 AS SHOWN HEREON ARE BASED ON K5BLE EVIDENCE FROM MOVE GROUND
STRUCTURES, MARKINGS BY THE RESPECTIVE UTAJTY COMPANIES AND/OR TER LOCATOR SERVICES, AND DRAWINGS PROVIDED
BY THE UTILITY COMPANIES. NO EXCAVATIONS %ERE MADE DURING 1,110 SURVEY TO DETERMINE EXACT LOCA0ON5 AND
DEPTHS Of UNDERGROUND U1IL10E5 AND STRUCTURES. ACTUAL LOCATIONS MAY VARY SLIGHTLY FROM THOSE AS SHOWN
HEREON AND ADDITIONAL UNDERGROUND UTILITIES MAY EXIST. EXISTENCE AND LOCATIONS OF ALL UNDERGROUND UTUTIE5
AND STRUCTURES SHOULD 80 VERIFED PRIOR TO ANY CONSTRUCTION ON THIS PROPERTY.
�12. EXISTING SURVEY INFORMATION (INCLUDING 0X611NG UTIUIIES) PROVIDED BY UINTAH ENGINEERING AND LAND SURVEYING.
13. BASIS OF BEARING: BEARINGS SHOWN HEREON ARE BASED ON THE LINE BETWEEN THE WEST QUARTER CORNER AND THE
SOUTHWEST CORNER OF SECTION 24, TOWNSHIP 4 SOUTH, RANGE 96 NEST O 7140 6TH PRNCIPLE MERIDIAN. ELEVATIONS
SHOWN HEREON ARE BASET) UPON NAVE/ 29. COORDINATE DATA SHONA HEREON IS BASED UPON A LOCAL COORDINATE
SYSTEM DEVELOPED BY UINTAN ENGINEERING 8 LAND SURVEYING.
14. ORIGINAL DRAWING SIZE IS 22X34.
,
SITE DESCRIPTOR
1. THE PROJECT IS WHOLLY 981MIN PARCEL 191727400012, WHICH IS OWNED BY ENCANA OIL AND GAS (USA). IN MORE LEGAL
TERMS, IT 15 LOCATED IN THE NORTHWEST li OF SECTION 24, TOWNSHIP 4 SOUTH. RANGE 96 WEST OF 114E 6114 PRINCIPAL
MERIDIAN, GARFIELD COUNTY. COL0190130.
2. ACCORDING TO THE !ARCS WEB 91E, THE UPPER LAYER Of SOL PRESENT AT THE PROJECT SITE CONSISTS OF
INGUL-STARMAN CHANNERY LOAMS (5-509 SLOPES), PARACHUTE -RHONE LOANS (5-309 SLOPES), AND RHONE LOAM
(30-709 SLOPES). 141ESE SOLS HAVE HYDROLOGIC SOL CLASSIFICATIONS OF D (HIGH RUNOFF POTENTIAL) AND B (LOW TO
1.1000RATE RUNOFF POTENTIAL). THE M01.0 SOIL EROSION K FACTOR OCR THESE SOLS VARIES BETWEEN 0.15 AND 0.20,
MEANING THESE SOILS ARE MILDLY EROSIVE (LOW POTENTIAL FOR EROSION).
3. 5TORIAWATER FROM 1490 SITE WW1 BE DISCHARGED FROM THE SITE THROUGH A SERIES OF 0I51910 AND PROPOSED DITCHES,
CULVERTS. AND SEDIMENT PONDS. DRAINAGE FOR THIS AREA IS TO THE SOUTHWEST, NORTHWEST. AND EAST.
4. THE 8ECE49NG BODY OF WATER IS RCEANCE CREEK, APPROXIMATELY 11 MILES DOWNSTREAM OF THE SITE
5. CONSTRUCTION ACTI9TY WILL CONSIST OF. IN THE FOLLOWING ORDER: ESTABLISHMENT OF PERIMETER STORMWATER BAPS, 9TE
CLEARING, TOPSOIL REMOVAL AND STOCKPRNG. OVERALL GRADING 00 THE PAD AND ROADS, BUILDING/EQUIPMENT
PAD/FOUNDATION CONSTRUCTION, UTILITY d EQUIPMENT INSTALLATIONS, BUILDING/EQUIPMENT CONSTRUCTION, ANO FINAL
SEEDING INTERMEDIATE STORMWATER MAPS WILL BE INSTALLED AND MNNTANED THROUGHOUT CONSTRUCTOR AS REQUIRED BY
THE CONTRACTOR'S MEANS AND METHODS.
6. THE PRIMARY CONTAMINANT OF CONCERN FOR THIS SITE 15 SEDIMENT. THE PROPOSED EROSION CONTROLS HAVE BEEN
SELECTED AND PLACED TO 1,11110ATE THE POTENTIAL FOR SEDIMENT TRANSPORT FROM THE SITE.
7. EXISTING VEGETATION ON THE SITE CONSISTS PRIMARILY OF MGH PLATEAU VEGETATION (OAK BRUSH, SAGE, MOUNTAIN
MAHOGANY. GRASSES, ETC.). UNDISTURBED PORTIONS OF THE SITE ARE 80-9014 VEGETATED.
8. THE 100 YEAR RUNOFF SCS CURVE NUMBERS FOR THIS SITE ARE 48 FCR UNDEVELOPED AREAS AND 91 FOR DEVELOPED
GRAVEL AREAS
UNCC
cal bolero milk
( �o.FwnbeloN.
CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU
OIG. GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER 07ILI7ES
■
ore-
ER090N CONTROL MEASURES (PERFORMANCE STANDARDS)
BMP DETAILS PROVIDED IN APPENDIX E OF THE HUNTER RIDGE ENERGY SERVICES LLC MASTER STORMWATER MANAGEMENT PLAN. THE REQUIREMENTS STATED
IN THE HUNTER RIDGE ENERGY SERVICES LLC MASTER PLAN SHALL OVERRULE ANY CONR10550 REOIAREMENTS STATED BELOW.
THE GENERAL MORDENTS FOR EROSION CONTROL WORK SHALL BE AS FOLLOWS:
I. ANY GRADING SHALL BE CONDUCTED N SUCH A MANNER TO EFFECTIVELY REDUCE ACCELERATED SOL EROSION AND RESULTING SEDIMENTATION.
2. ALL GRADING SHALL BE DE9GNED. CONSTRUCTED. AND COMPLETED TO MINIMIZE THE SIZE AND DURATION OF EXPOSED (UNVEGETATED) AREA
J. SEDIMENT CAUSED BY ACCELERATED SOIL ER090N 94At1 BE CAPTURED AND REMOVED FROM RUNLET WATER PRIOR TO LEAKING THE 9TE.
4. ANY TEMPORARY OR PERMANENT FACILITY DE9GNED AND CONSTRUCTED FOR 114E CONVEYANCE OF WATER AROUND. THROUGH. OR FROA THE GRADED AREA
SHALL BE DE9GNED TO LIMIT THE WATER FLOW TO A NON-EROSIVE VELOCITY.
5. TEMPORARY 50L EROSION CONTROL FACILITES SHALL BE REMOVED AND AREAS GRADED AND STABILIZED WITH PERMANENT SOL ERO90N CONTROL MEASURES.
6. ALL BMP, MILL BE IN PLACE PRIOR TO ANY MAJOR EARTHWORK.
AFTER CONSTRUCTION (PERMANENT MEASURES)
1. ALL MEAS DISTURBED BY CONSTRUCTION ACTIVITIES SHALL BE REVEGETA100 5115 A CERTIFIED NEED -FREE NATIVE SEED MIX APPROPRIATE FOR 91E SOLS
AND CON00084S. THESE AREAS SHALL BE MAINTAINED UNTIL A VEGETATIVE COVER OR AT LEAST 709 OF PRE -CONSTRUCTION CONDITIONS EXISTS. IF
NECESSARY, ADDITIONAL SEED, MULCH. AND/OR FER1U2ER SHOULD BE APPLIED TO E5TABLI514 SAD VEGETATIVE COVER.
DURING CONSTRUCTION (TEMPORARY MEASURES)
1. MATERIAL STOCKPILES SHALL BE 6ERLIED AROUND THEIR PERIMETER TO PREVENT RUNOFF POLLUTION.
2. PLACE WATTLES AND/OR BERM DOWN GRADIENT Of DISTURBED AREAS AND STOCKPILES,
3. COMPACT SOIL AND TOPSOIL TO THE REQUIREMENTS A5 STATED IN THE GEOTECHNICAL RECOMMENDATIONS AND FINISH GRADE TO ELEVATIONS SHOWN ON 114E
SITE PLM. EUMNAIE ANY LOW SPOTS PRIOR TO FINAL STAFDLIZATION.
4. CONTRACTOR SHALL HAVE A WATER TRUCK MADE AVNLABLE TO ASSST IN C044190UNG MOISTURE CONTENT AND DUST AND 'MRO EROSION.
5. SOILS THAT WILL BE STOCKPILED FOR MORE THAN THIRTY (30) DAYS SHALL BE SEEDED AND MULCHED WITHIN FOURTEEN (14) DAYS OF STOCKPILE
CONSTRUCTION. NO STOCKPILES SHALL BE PLACED WITHIN 011E HUNDRED (100) FEET OF A DRAINAGE WAY UNLESS APPROVED BY THE 05WMP ADMINISTRATOR.
6, THE CLEANING OF CONCRETE DELIVERY TRUCK CHUTES 15 RESTRICTED TO APPROVED CONCRETE WASH OUT LOCATIONS ON THE JOB SITE. THE DISCHARGE OF
WATER CONTAINING WASTE CONCRETE TO THE STORM SYSTEM 15 PROHIBITED. ALL CONCRETE WASTE SHALL BE PROPERLY CLEANED UP AND DISPOSED AT AN
APPROPRIATE LOCA6ON.
MAINTENANCE
1. ALL EROSION CONTROL MEASURES SHOULD BE INSPECTED TO DETERMINE IF REPAIRS OR SEDIMENT REMOVAL 15 NECESSARY. THE MAXIMUM TIME BETWEEN
INSPECTIONS SHALL BE 14 DAYS.
2. EROSION CONTROL MEASURES ARE ALSO TO BE INSPECTED 1111HN 48 HOURS OF A STORM THAT PRODUCES MODERATE RUNOFF, OR MODERATE SNOW MELT.
3 REPAIRS OR MODI0CATIONS TO THE EROSION CONTROL MEASURES SHALL BE COMPLETED IMMEDIATELY. REPNRS AND MODIFICATIONS SHALL BE DOCUMENTED
(WHAT. WHY. k WHEN).
4. SILT AND SEDIMENT SHALL BE REMOVED IF THERE 15 A RISK OF SEDIMENT BYPA5900 THE EROSION CONTROL FEATURE. SPECIFICALLY. SEDIMENT BOLDUP
SHALL NOT EXCEED 1/3 7HE HEIGHT OF ANY CHECK DAM OR BERM (INCLUDING INLET PROTECTION), 1/2 THE HEIGHT OF A WATTLE, OR WHEN SEDIMENT
WITHIN A SEDIMENT BASIN GETS WITHIN 6 1NCI4ES OF THE OUTLET INVERT.
5. 1114EN THE TEMPORARY MEASURES ARE TO BE REMOVED, ANY SILT AND MOMENT DEPOSITS SHALL BE REMOVED AND SPREAD EVENLY 1,1 OPEN AREAS AND
SEEDED AS NECESSARY.
REVISIONS
NO.
DATE
DESCRIPTION
BY
BMP LEGEND
10,40101100 detail, and maintenance guid4'nn for the move erosion contra measures can be found In Append+ E of the
Hunter Ridge Energy Services LLC Master Starmwaler Monagement Mon, COOT standards, an Denver's Urban Drainage and
Rood Control District 0,0,110, and various manufactures eebsiles. Volutions from these standards RI. be approved by the
CSMIP Administrator prior to insidlotion. This list Is not considered complete or absolute, additional methods con and
should be added to this plan if required. This CSWIAP should be kept current and modified appropriately by the CSWMP
Administrator based on actual field ca ditIon0 and the Contractor', means and methods.
ANCHORED STRAW BALE
NS.A/ 0 CHECK DMA.
0 COMPOST BLANKET
-�-:4--0 COHSIRUCTION FENCE
,, CFB COMPOST FILTER BERM
CULVERT INLET PROTECTION
EI 01 O CONSTRUCTION MARKER
CULVERT OUTLET PROTECTION
CONSTRUCTION SITE BOUNDARY
O CONCRETE WASHOUT AREA
CD
DEWATERING
0VER90N DITCH
EROSION CONTROL BLANKET
EXISTING VEGETATIVE BUFFER
EXISTING VEGETATIVE SWALE
FILTER BERM
HYDRAULIC MULCH
LAND CRADNG
LEVEL SPREADER
MATERIALS STORAGE AREA
PROTECT EXISTING VEGETATION
REINFORCED CHECK DAM
ROPE FENCE
1^1 RUN ON DIVERSION DITCH
l 1 RP RETENTION POND
glum \/! RR R:PRAP / ROCK
1'.....i
etoW
-s80-RY-
�L
REINFORCED ROCK BERM
REINFORCED ROCK BERM FOR CULVERT
PRO1EC0084
ROAD SIDE DITCH
REVE00101 V"
SLASH
SEDIMENT BASIN
$ `(� SEDIMENT CONTROL LOG / WATTLE
SILT FENCE
Q O SURFACE HARDENING
OSEEDING AND 9010660
SNOW STORAGE AREA
$$B SOL SILT BERM
ST SEDIMENT TRAP
-2110-AW- eAY SUBSOIL STOCKPILE
TERRACING
® O TOILETS (PORTABLE)
TOPSOIL STOCKPILE
` O TEMPORARY SLOPE DRAIN
TSC TEMPORARY STREAM CROSSI910
TOPSOIL WINDROW WITH TEMPORARY
v V^V T$W HYDRAUUC EROSION CONTROL
MULCH
OVEGETATIVE BUFFER
TNTC VEHICLE TRACKING CONTROL
VEM VEHICLE EQUIPMENT R MAINTENANCE
■e1
1=N
WATER BAR
WANG DITCH
WASTE MANAGEMENT
STRAW WATTLE
VEHICLE TRACKING CONTROL
W1TH WHEEL WASH
Check Dams To Be Placed In Ditches A MHVnum 0f Every Teo Feet Of Verlk0l Relief
(I.e.. Al Every 2' Contour)
COVER NMTH HYDRAULIC MULCH
HUNTER RIDGE
ENERGY SERVICES LLC
SI OPE5 1,1 OR GREATER,
SURFACE ROUGHENING, TOP501 SPREADING,
BROADCAST SEEDING A4ENOAENT5, AND
HYDRAULIC EROSION CONTROL MULCH
SURF SFSU ST IFS )NAY ul=41
SURFACE ROUGHENING, TOPSOIL SPREADING,
DRILL SEEDING, AND CRIMPED STRAW MULCH
RIVER CITY
C O N S U L T A N T S
744 Manson Court. Saila 110 Phone- 8)0,241.4]22
Oland JwW:m On 212318 PAs 070 241 OW
TOPSOIL WINDROW DURING CONSTRUCTION
SEED AND MULCH WINDROW
TOPSOIL WINDROW DURING RECLAMATION
Hunter Ridge Energy Services LLC
Wolf Ranch Compressor Station
Construction Stormwoter Management Plan
PROJECT 4;1311-006
SCALE
DRAWN BY: nmr
CHECJ(ED BY: milt
HORIZ: 1' - 60'
VERT:
DATE ISSUED: 05.07.13
SHEET NO. 2 OF 3 SHEETS
13
AO
3a
e0
izo
IN FEET I i
I INCH = 60 FT.
CONTOUR INTERVAL = I FOOT, / ��/ ;.•
0
0(8
tLi.
lf�
r1\ cos
eo
GENERAL NOTES
1. SWAP ADMINISTRATOR (LOCAL CONTACT): KATHY VE8112 (970) 285-2626.
2. THE PROJECT AREA IS EOUAL TO THE ESTIMATED TOTAL AREA OF DISTURBANCE WHICH IS APPROXIMATELY 15.1 ACRES. THE
TOTAL AREA TO BE RE -VEGETATED I5 APPROXIMATELY 2.6 ACRES.
3. AT ALL TIMES DURING CONSTRUCTION, EROSION AND SEDIMENT CONTROL SHALL 8E MAINTAINED BY 161E CONTRACTOR.
4. EROSION CONTROL MEASURES SHALL BE INSTALLED AS THE WORK (GRADING) PROGRESSES
S DETAILS SHOWN ARE SCHEMATIC ONLY. ADJUSTMENTS MAY BE NECESSARY TO FIT ACTUAL FIELD CONDITIONS.
6. EXISTING VEGETATION WILL BE REMOVED WITH A HYDRDAXE OR OTHER APPROVED 4ETHOD, CHIPPED N40 MIXED INTO THE
TOP501.
7, NEGATIVE IMPACTS TO DOWNSTREAM AREAS (OR RECEIVING WATERS) CAUSED BY EARTHWORK AND/0R CONSTRUCTION TO BE
MONITORED AND CORRECTED BY THE CONTRACTOR.
8. 161E FAST BLIP TO BE INSTALLED ON TIE SITE SHALL BE CONSTRUCTION FENCE. MARKERS, OR OTHER APPROVED MEANS OF
DEFINING THE UNITS OF CONSTRUCTION.
9. NATURAL VEGETATION SHALL BE RETAINED AND PROTECTED WHEREVER POSSIBLE. EXPOSURE OF SOL TO EROSION BY
REMOVAL OR DISTURBANCE OF VEGETATION SHALL BE U41110 TO THE AREA REQUIRED FOR IMMEDIATE CONSTRUCTION
OPERATIONS
10. ALL CONSTRUCTION TRAFFIC MUST ENTER/EXIT THE SITE THROUGH THE SN4AP-APPROVED ACCESS POINTS
11. THE LOCATIONS OF UNDERGROUND UTILITIES AS SHOWN HEREON ARE BASED ON VISIBLE E0DENCE FROM ABOVE GROUND
STRUCTURES, MARKINGS BY THE RESPECTIVE UTILITY COMPANIES AND/OR THEIR LOCATOR SERVICES, AND DRAWINGS PROVIDED
BY THE UTUTY COMPANIES. N0 EXCAVATIONS WERE MADE DURING THIS SURVEY TO DETERMINE EXACT LOCATIONS AND
DEPTHS OF UNDERGROUND UTILITIES AND STRUCTURES. ACTUAL LOCATIONS MAY VARY SIJGHTLY FROM THOSE AS SHOWN
HEREON AND ADDITIONAL UNDERGROUND UTILITIES MAY EXIST. EXISTENCE AND LOCATIONS OF ALL UNDERGROUND UTILITIES
AND STRUCTURES SHOULD BE VERIFIED PRIOR TO ANY CONSTRUCTOR ON THIS PROPERTY.
2. EXISTING SURVE1 NIDI MA6064 (INCLUDING EXISTING UTILITIES) PROVIDED BY UINTAH ENGINEERING AND LAND SURVEYING.
13. BASIS OF BEARING: BEARINGS SHOWN HEREON ARE BASED ON THE UNE 8E1WEEN THE WEST QUARTER CORNER AND THE
SOUTHWEST CORNER OF SECTOR 24, TOWNSHIP 4 SOUTH, RANGE 96 VEST OF THE 618 PRINCIPLE MERIDIAN. ELEVATIONS
SHOWN HEREON ARE BASED UPON NAND 29. COORDINATE DATA SHOWN HEREON IS BASED UPON A LOCAL COORDINATE
SYSTEM DEVELOPED BY UINTAH ENGINEERING k LAND SURVEYING.
14. ORIGINAL DRAWING SIZE IS 22'034'.
SITE DESCRIPTOR
1. THE PROECT IS WHOLLY WITHIN PARCEL 01191727400012, WHICH 15 OWNED BY ENCANA GL AND GAS (USA), IN MORE LEGAL
TER4S, 1T IS LOCATED IN THE NORTHWEST K OF SECTION 24, TOWNSHIP 4 SOUTH, RANGE 96 WEST OF THE 8161 PRINCIPAL
MERIDIAN, GARFIELD COUNTY. COLORADO.
2. ACCORDING TO THE NRCS WEB 97E, THE UPPER LAYER OF SOIL PRESENT AT THE PROJECT SITE CONSISTS OF
IRIGIA.-STAR4AN CHANNER61 LOANS (5-50X SLOPES), PARACHUTE -RHONE LOMUMS (6-300 SLOPES), AND 121,061 LOAM
(30-708 SLOPES). THESE SOILS HAVE HYDROLOGIC SOIL CLASSIFICATIONS OF D (HIGH RUNOFF POTENTIAL) AND B (LOW TO
MODERATE RUNOFF POTENTIAL). THE WHOLE SOIL EROSION K FACTOR FOR THESE SOILS VARIES BETWEEN 0.15 AND 0.20,
MEANING THESE SOILS ARE MILDLY EROSIVE (LOW POTENTIAL FOR EROSION),
3. STORMWAIER FROM THIS SITE WILL BE DISCHARGED FROM THE SITE THROUGH A SERIES OF EXISTING AND PROPOSED DITCHES.
CUI.VERTS, AND 5ED14ENT PONDS. DRAINAGE FOR T146 AREA I5 TO THE SOUTHWEST. NORTHWEST, AND EAST.
4. THE RECEIVING BODY O WATER IS PICEANCE CREEK, APPROXIMATELY 11 16110 DOWNSTREAM OF THE SIZE.
5. CONSTRUCTION ACTIVITY WLL CONSIST OF, IN 161E FOLLOW8G ORDER: ESTABLISHMENT OF PERIMETER STORMWAIE8 BAPS, SITE
CIEARNG. TOPSOIL REMOVAL AND STOCKPILING, OVERALL GRADING OF THE PAD AND ROADS. BIALDING/EOUIPMENT
PAD/FOUNDA5ON CONSTRUCTION, UTILITY k EQUIPMENT INSTALLATIONS, BUILD*NG/EOLIP4ENT CONSTRUCTION, AND FlN61
SEEDING INTERMEDIATE STORMWATER B4P5 WILL BE INSTALLED AND MAINTAINED THROUGHOUT CONSTRUCTION AS REQUIRED BY
THE CONTRACTOR'S MEANS AND METHODS
6. THE PRIMARY CONTAMINANT OF CONCERN FOR THIS SITE 15 SEDIMENT. THE PROPOSED EROSION CONTROLS HAVE BEEN
SELECTED AND PLACED TO MITIGATE THE POTENTIAL FOR SEDIMENT TRANSPORT FROM THE SITE.
7. EXISTING VEGETATION ON THE SITE CONSISTS PRIMARILY OF HIGH PLATEAU VEGETATION (OAK BRUSH, SAGE, MOUNTAIN
MAHOGANY, GRASSES, ETC.). UNDISTURBED PORTIONS OF THE SITE ARE 80-90X VEGETATED.
8. THE 100 YEAR RUNOFF SCS CURVE NUMBERS FOR THIS SITE ARE 48 FOR UNDEVELOPED AREAS AND BI FOR DEVELOPED
GRAVEL AREAS.
UNCC
K'AAL(>4t�."�rCF.bt wIWCall
e�at�orsbebw.
ycadlt
CALL 2 BUSNE55 DAYS s N ADVANCE IYOU
OIG. GRADE, 0R EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER 0811515.
.6
EROSION CONTROL MEASURES (PERFORMANCE STANDARDS)
BMP DETAILS PROVIDED IN APPENDIX E OF THE HUNTER RIDGE ENERGY SEANCES LLC MASTER STORMWATER MANAGEMENT PLAN. THE REQUIREMENTS STATED
IN THE HUNTER RIDGE ENERGY SERVICES LLC MASTER PLAN SHALL OVERRULE ANY CONFUCTING 81600 AENIS STATED BELOW.
THE GENERAL REQUIREMENTS FOR EROSION CONTROL WORK SHALL BE AS FOLLOWS:
1. A145 GRADING SHALL BE CONVICTED IN SUCH A MANNER TO EFFECTIVELY REDUCE ACCELERATED SOIL EROSION AND RESULTING SEDIMENTATION.
2. ALL GRADING SHALL BE DESIGNED. CONSTRUCTED. AND COMPLETED TO MINIMIZE THE 512E AND DURA0ON O EXP0SE0 (UNVEGETAIED) AREA
3. SEDIMENT CAUSED BY ACCELERATED SOIL EROSION SHALL BE CAPTURED AND REMOVED FROM RUNOFF WATER PRIOR TO LEAVING THE SITE.
4. ANY TEMPORARY CR PERMANENT FACILITY DESIGNED A1.10 CONSTRUCTED FOR THE CONVEYANCE OF WATER AROUND. THROUGH. CR FROM THE GRADED AREA
SHALL BE DESIGNED TO LIMIT THE WATER FLOW TO A NOR -EROSIVE VELOCITY.
5 TEMPORARY SOIL EROSION CONTROL FACILITIES SHALL BE REMOVED AND AREAS GRADED AN0 STABILIZED MTh PERMANENT SOL EROSION CONTROL MEASURES.
6. ALL B4Ps WALL BE IN PLACE PRIOR TO ANY MAJOR EARTHWORK.
AFTER CONSTRUCTION (PERMANENT MEASURES)
I. ALL AREAS DISTURBED BY CONSTRUCTION ACTNTIES SHALL BE REVEGETATED WITH A CERTIFIED WEED -FREE NAIVE SEED MIX APPROPRIATE FOR SITE SOLS
AND CONDITIONS. 0415E AREAS SHALL BE MAINTAINED Leal A VEGETATIVE COVER OR AT LEAST 7016 OF PRE-CONSTRUC5OIN CONDITIONS E8STS. IF
NECESSARY, ADDITIONAL SEED. MULCH. AND/CR FERTIUZER SHOULD BE APPLIED TO ESTABLISH SAD VEGETATIVE GONER.
DURING CONSTRUCTION (TEMPORARY MEASURES)
I. MATERIAL STOCKPILES SHALL BE BEAMED AROIR1D THEIR PERIMETER TO PREVENT RUNOFF POLLU8ON.
2. PLACE WATTLES AFD/OR BERM DOWN GRADIENT OF DISTURBED AREAS AND STOCKPILES
3. COMPACT SOL AND TOPSOIL TO THE REOU/1EMENTS AS STATED IN THE GEOTECHNICAL RECOMMENDATIONS AND FINISH GRADE TO ELEVATIONS SHOWN ON THE
SITE PLAN. ELIMINATE ANY LOW SPOTS PRIOR TO FINAL STABILIZATION.
4. CONTRACTOR SHALL HAVE A WATER TRUCK MADE AVAILABLE TO ASSIST IN CONTROLLING MOISTURE CONTENT AND DUST AND WIND EROSION.
5. SOILS THAT WILL BE 510CKPII10 FOR MORE THAN THIRTY (30) DAYS SHALL BE SEEDED AND MULCHED WITHIN FOURTEEN (14) DAYS OF STOCKPILE
CONSTRUCTION. NO STOCKPILES SHALL BE PLACED WiT184 ONE HUNDRED (100) FEET OF A DRAINAGE WAY UNLESS APPROVED BY THE OSWMP ADMINISTRATOR,
6. THE CLEANING OF CONCRETE DELIVERY TRUCK CHUTES I5 RESTRICTED TO APPROVED CONCRETE WASH OUT LOCATIONS ON THE JOB SITE. THE DISCHARGE OF
WATER CONTAINING WASTE CONCRETE TO THE STORM SYSTEM IS PROHIBITED. ALL CONCRETE WASTE SHALL BE PROPERLY CLEANED UP AND DISPOSED AT AN
APPROPRIATE LOCATION.
MAINTENANCE
1. ALL EROSION CONTROL MEASURES SHOULD BE INSPECTED TO DETERMINE IF REPAIRS OR SEDIMENT REMOVAL 15 NECESSARY. THE MAXIMUM TIME BETWEEN
INSPECTIONS SHALL BE 14 DAYS
2. EROSION CONTROL MEASURES ARE ALSO TO BE INSPECTED WTHIN 48 HOURS OF A STORM THAT PRODUCES MODERATE RUNOFF, OR MODERATE SNOW MELT.
3. REPAIRS OR MODIFICATIONS TO THE EROSION CONTROL MEASURES SHALL BE COMPLETED 144EDIATELY. REPAIRS AND MODIFICATIONS SHALL BE DOCUMENTED
(WHAT, WHY, k WI£N).
4. 9LT AND SEDIMENT SHALL BE REMOVED IF THERE IS A RISK OF SEDIMENT BYPASSING THE EROSION CONTROL FEATURE. SPECIFICALLY. SEDIMENT BUILDUP
SHALL NOT EXCEED 1/3 THE HEIGHT OF ANY CHECK DAM OR BERM (INCLUDING INLET PROTECTION), 1/2 THE HEIGHT OF A WATTLE. OR WHEN SEDIMENT
WITHIN A SEDIMENT BASIN GETS WITHIN 6 INCHES OF THE OUTLET INVERT.
5. MIEN THE TEMPORARY MEASURES ARE TO BE REMOVED. ANY SILT AND SEDIMENT DEPOSITS SHALL BE REMOVED AND SPREAD EVENLY IN OPEN AREAS AND
SEEDED AS NECESSARY.
REVISIONS
NO.
DATE
DESCRIPTION
BY
BMP LEGEND
Instollot'on details ontl moinlenon0e Wldefinea for the above erosion control msosuros con be bund M Appends E of the
Hunter Ridge Energy Services LLC Master Stormwater Management Plan, COOT standards, on Denver's Urban Drainage and
Flood Control District website, ond various monufoclure's websites. Variations from these stondords andl be opproved by the
C5W11P Administrator prior to instdlotion. This list Is not considered complete or absolute, additional methods con and
should be added to lhls pan 11 required. This CSW4P should be kept current ontl modified oppropriateiy by the C5Yr1AP
Admtnislrmor based on 004081 field conditions and the Contractor's means and methods.
ANCHORED STRAW BALE
V 0 CHECK DAM'
® 0 COMPOST BLANKET
1 ❑
0 CONSTRUCTION FENCE
COMPOST 6L1ER BERM
CULVERT INLET PROTECTION
❑ ❑ O CONSTRUCTION MARKER
CULVERT OUTLET PROTECTION
CONSTRUCTION SITE BOUNDARY
CONCRETE WASHOUT AREA
O pyy DEWATERING
-►• f 0 DIVERSION DITCH
EROSION C0N1004. BLANKET
r EVB EXISTING VEGETATIVE BUFFER
)11(...""\,_,/ EVS E8STING VEGETATIVE SWALE
® O FILTER BERM
0 HYDRAULIC MULCH
LO 0 LAND GRADING
I / ///.///.I 0 LEVEL SPREADER
MATERIALS STORAGE AREA
PROTECT EXISTING VEGETATION
REINFORCED CHECK DAM
-x xROPE FENCE
--W/YID RUN ON DIVERSION DITCH
ORP RETENTION POND
IIL,:g. ,;1 0 RPRAP / ROCK
REINFORCED ROCK BERM
REINFORCED ROCK BERM FOR CULVERT
PROTECTION
-PLV-PLV-
SB
1st
itforP
-pl-yl-
ST
TER
O
ls- TS
ROAD SIDE DITCH
REVEGETATION"
SLASH
SEDIMENT BASIN
SEDIMENT CONTROL LOG / WATTLE
SILT FENCE
SURFACE HARDENING
SEEDING AND MULC8NG
SNOW STORAGE AREA
50L 9LT 8ER6
SEDIMENT TRAP
SUBSOIL STOCKPILE
TERRACING
TO1ET5 (PORTABLE)
TOPSOIL STOCKPILE
OTEMPORARY SLOPE DRAIN
TSC
TEMPORARY STREAM CROSSING
®TOPS044. WINDROW PATH TEMPORARY
HYDRAULIC EROSION CONTROL
MULCH
OVEGETATIVE BUFFER
n vrc
1.. _
VEM
O
VEHICLE TRACKING CONTROL
VEHICLE EQUIPMENT A MAINTENANCE
WATER BAR
WING DITCH
OWASTE MANAGEMENT
STRAW WATTLE
,w.rAl
OVEHICLE TRACKING CONTROL
WITH %NEEL WASH
Check Done To Be Plated In Ditches A Minimum 01 Every Two Feet 01 Vertical Relief
(I.e., At Every 2' Contour)
COVER WITH HYDRAULIC MULCH
HUNTER RiDGE
ENERGY SERVICES LLC
94861.5SLOPES.,11_0LSIanIEK
SURFACE ROUGHENING, TOPSOIL SPREADING,
BROADCAST SEEDING AMENDMENTS, AND
HYDRAULIC EROSION CONTROL MULCH
5406116 L1S5 M 4 3L1.
SURFACE ROUGHENING. TOP50L SPREADING.
DRILL SEEDING. AND CRIMPED STRAW MULCH
RIVER CITY
C O N S U L T A N T S
744 Hnaon Court. Sulo 110 Phone070.241.4722
C 0.4 lononn Cn Bum P006170 0118041
TOPSOIL WINDROW DURING CONSTRUCTION
TOPSOIL TO BE USED
ON NEW SLOPES
SEED AND MULCH WNOROW
TOPSOIL WINDROW DURING RECLAMATION
Hunter Ridge Energy Services LLC
Wolf Ranch Compressor Station
Post -Construction Stormwater Management Plan
PROJECT /:1311-006
DRANK BY: nmr
CHECKED BY: mJ,
SCALE
Hata: 1' 60'
VERT:
DATE ISSUED: 05.07.13
SHEET NO. 3 OF 3 SHEETS
14
LEGEND
Proposed Contour
Existing Contour
Proposed Edge of Rood
Existing Edge of Rood
Project Site Boundary
Proposed Drainage
Proposed Pipeline Corridor
I Proposed Building
Proposed Gravel Surface
k10
b1
50
25
50
1 IN FEET
I INCH a 50 FT.
CONTOUR INTERVAL e I FOOT
Install
W12-56
Trucks Turning's
Sign dd _ I//
F�y1
1 ,1
-8123
]r r�
aT2:
B>_
7/
- Existing Grovel Roods
Install
R2-1
' . 15 MPH
Sign
i1
8135--- - .5.lW -
3' x 3'
Site Identification
Sign
Thermal Oxidizer
T.O. Knockout
-1
Btex
Glycol Regen
Pad 30' x 40'
Glycol Contactors
Dehy Filter Area
Pad 75' x 15'
(-Fuel Gas Skid
Inlet Slug Catcher
- (6) Compressors
Pad 246' x 75'
MCC Building
40' x 65'
177 - -
I_I I.1-1- fi I 1 1 L .L1 1 11-1-1 1 1 111-1
Future Amine Plant
150' x 200'
Discharge Meters -
Pad 26' x 23'
i
Pig Lounchers
Pad 15' x 40'
O
0
811.197
N01' 33 39'E
S
Wo11 Ranch Compressor Station Area Desorlatlan (nota certified leaot de5GNotion)
A Porch of land situated in the northwest 1/4 of Section 24, Township 4 South, Range 96 West of the 6th P0120601 Meridian. County of
Gorlldd. State of Colorado. being more particularly clescr0ed as fellows:
commencing at the west 1/4 owner of said section 24. whence the southwest corner of said section 24 Dears South 00'00'45' East, o
distance of 2745.21 feet with o11 bearings herein 5.401 ve thereto; 1
thence North 3911'05' Eost o distance of 1516.07 feet; to the point of beginning;
thence North 3911'05' West a distance of 345.99 feet:
thence Nath 011319' East o distonce of 811.97 feet;
thence South 82'4316' East a dislonee of 631.88 feel;
thence South 0114'23' West o distance of 936.62 feet;
thence South 4015'44' East o distance of 282.30 feet;
thence South 2417'22' West a distance of 135.20 feet;
thence Nath 6219'52' West a distance of 592.79 feet;
which Is the point of beginning,
the ontecedent 90500 description having on area of 695912.00 aquae feet, 15.98 acres
fio
UNCC
lSk9LW!{Fr, EN mow Mars MICK
Storm Drain
(Typ.)
Wolf Ranch
Compressor Station
Areo
CALL 2 OUR NESS DAYS IN ADVANCE BEFORE YOU
DIG, GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROJND MEMBER UTILITIES.
A
REVISIONS
- S7 -y'•
A3' 2745.21
/ \f -
NOTES:
1. THE LOCATIONS OF UNDERGROUND UTUOES AS SHOWN HEREON ARE BASED ON VISIBLE EVICENCE FROM 0805E GROUND STRUCTURES, MARKINGS BY THE RESPECTIVE 000TY COMPANIES AND/OR THEIR LOCATOR
SERVICES, AN0 DRAWINGS PROVIDED BY THE UTILITY COMPANIES. NO EXCAVATIONS WERE 1.1A0E DURING THIS SURVEY TO DETERMINE THE EXACT LOCATIONS AND DEPTHS OF THE UNDERGROUND UTILIES AND
STRUCTURES. ACTUAL LOCATION MAY VARY SUGHTLY FROM THOSE SHOWN HEREON AND ADDITIONAL UNDERGROUND UTILITIES MAY EXIST. EXISTENCE AND LOCATIONS OF ALL UNDERGROUND UTUTES AND STRUCTURES
SHOULD BE VERIFIED PRIOR TO ANY CONSTRUCTION 001 THIS PROPERTY,
2. EXISTING SURVEY INFORMATION (INCLUDING EXISTING UTILITIES) PROVIDED BY UINTAH ENGINEERING 6 LAND SURVEYING.
3. PROPOSED EQUIPMENT AND PAD LAYOUT PROVIDED BY ENCANA AND BASED ON DRAWINGS CONE BY KAHUNA VENTURES. LLC..
4. PARCEL INFORMATION 15 FROM 791E GARFELD COUNTY G45 MEB0TE.
5. CONSTRUCTION 51-1ALL BE IN ACCORDANCE WITH ALL RECOMMENDATIONS MADE WITHIN TME Y'1H AND ASSOCIATES, INC. GEOTECHNICAL INVESTIGATION REPORT AND ALL SUBSEQUENT ADDENDUMS TO SAID REPORT. FILL
PLACEMENT AND COMPACTION SHALL BE AS RECOMMENDED IN THE REPORT OR IN THE ABSENCE OF A SPECIFIC RECOMMENDATION WITHIN THE REPORT, AS PER COOT SPECIFICATIONS AND STANDARDS.
6. THE PROJECT IS LOCATED WI11-11N A -15,800 ACRE PARCEL R 191727400012, WHICH 15 OWNED BY ENCANA OIL AND GAS (USA) INC. IN MORE LEGAL TERMS. IT IS LOCATED IN THE NORTHWEST 11 OF SECTION 24,
TOWNSHIP 4 SOUTH, RANGE 96 WEST OF 111E 671-1 PRINCIPAL MERIDIAN, GARFIELD COUNTY. COLORADO. THE PROJECT AREA IS EQUAL TO TIE ESTW4ATED TOTAL AREA OF DISTURBANCE WHICH IS APPROXIMATELY 15.1
ACRES. THE TOTAL AREA TO BE RE -VEGETATED 15 APPROXIMATELY 2.6 ACRES.
ACCORDING TO THE NRCS WEB SITE, THE UPPER LAYER Of 5014. PRESENT AT THE PROJECT SITE CONSISTS 0r IRIGUL-STARMAN CHANNERY LOAMS (5-505 SLOPES) (14.35), PARACHUTE -RHONE LOAMS (5-305 SLOPES)
(72.65), ANO RHONE LOANS (30-705 SLOPES) (13.05). MESE SOILS HAVE HYDROLOGIC SOL CLASSIFICATIONS OF 0 (HIGH RUNOFF POTENTIAL) (14.35) AND B (LOW TO MODERATE RUNOFF POTENTIAL) (85.75). 711E
WHOLE 5091 EROSION K FACTOR FOR THESE SGL5 IS BETWEEN 0.15 AND 0.20, MEANING THESE SC110 ARE MILD TO MODERATELY EROSIVE.
8. EXISTING VEGETATION ON THE SITE CONSISTS PRIMARILY OF HIGH PLATEAU VEGETATION (OAK BRUSH. 5AGE. MOUNTAIN MAHOGANY, GRASSES, ETC.). UNDISTURBED PORTIONS OF THE 517E ARE 80-90X VEGETATED.
9. THIS SITE 15 LOCATED WITHIN 'RESOURCE LAND' ZONING.
10. BASIS OF BEARING: BEARINGS SHOWN HEREON ARE BASED ON THE LINE BETWEEN THE WEST QUARTER CORNER AND THE SOUTHWEST CORNER OF SECTION 24. TOWNSHIP 4 SOUTH, RANGE 96 WEST OF THE 619 PRINOPLE
MERIDIAN. ELEVATIONS SHOWN HEREON ARE BASED UPON NANO 29. COORDINATE DATA SHOWN HEREON 15 BASED UPON A LOCAL COORDINATE SYSTEM DEVELOPED BY UINTAH ENGINEERING & LAND SURVEYING.
11. BUILDINGS, FOUNDATIONS, PIPING, ETC. DESIGNED BY OTHERS.
12. NO EXISTING BUILDINGS, DRIVEWAYS, OR PARKING AREAS ARE LOCATED ON-SITE AND NO BUILDINGS ARE PURPOSED WITHIN 250' OF THE NEAREST PROPERTY LINE, WHICH IS '-350 FEET NORTH OF THE SITE.
13. FENCING WILL NO BE INSTALLED AT THIS FACIUTY. THE SURROUNDING GEOGRAPHIC RELIEF AND REMOTE LOCATION ISOLATE IT FROM HUMANS AND THE SECONDARY CONTAINMENT WALLS AND BUILDINGS WILL PROVIDE A
WILDLIFE BARRIER
14. 71-110 SITE IS NOT MANNED FULL TIME AND NO WATER OR WASTEWATER FACILITES ARE PLANNED FOR THIS SITE.
15. STAKING INFORMATION TO BE PROVIDED TO SURVEYOR/CONTRACTOR BY RIVER CITY CONSULTANTS. PLEASE CONTACT RIVER CITY CONSULTANTS TO OBTAIN THE INFORMATION.
16. THE ORIGINAL DRAWING SIZE 15 22' X 34'.
60.00'
Proposed
Pipeline
Corridor
Install
R5-2
No Trucks
Sign
Proposed Pipeline
(Designed By Others)
West 1/4 Corner or Section 24
Install R1-1
Stop Sign
Inst011
W12-56
Trucks Turning
Sign
in County Rood 403
�r-
/
Existing Ground 45
Building
GENERAL ELEVATION VIEW
(To Demonstrate Moelmlm Structure Height)
xis
Finished Grade
_47 -Southwest Corner of Section 24
N0.
DATE
DESCRIPTION
BY
HUNTER RIDGE
ENERGY SERVICES LLC
RIVER CITY
C O N S U L T A N T S
T44 Homan Caurl. SIAe 110 Phone. 970.201,4122
1:1x,01 tHorTnn en AiVK Far 9102/10941
Hunter Ridge Energy Services LLC
PROJECT 1311-008
DRAWN BY: nmr
CHECKED 80: nip(
Wolf Ranch Compressor Station
Site Plon
SCALE
H0R12: 10 50'
VERT: N/A
00,1E 1551E0: 05.07.13
SHEET N0. 2 OF 2 SHEETS
2
Q Q'
GENERAL NOTES
1Z
f
30
1. SWAP ADMINISTRATOR (LOCAL CONTACT): KATHY VERT2 (970) 285-2626.
2. THE PROJECT AREA IS EQUAL TO THE ESTIMATED TOTAL AREA OF DISTURBANCE WHICH I5 APPROXIMATELY 15.1 ACRES. THE
TOTAL AREA TO BE RE -VEGETATED IS APPROXIMATELY 2.6 ACRES.
3 AT A1.1 TIMES DURING CONSTRUCTOR. EROSION AND SEGMENT CONTROL SHALL BE MAINTAINED BY THE CONTRACTOR.
4. EROSION CONTROL MEASURES SHALL BE INSTALLED AS 184E WORK (GRADING) PROGRESSES.
5. DETAILS SHOWN ARE SCHEMATIC ONLY. ADJUSTMENTS MAY BE NECESSARY TO FIT ACTUAL FIELD CONDITIONS.
6. EASIING VEGETATION WLL BE REMOVED W18 A HYOROAXE OR OTHER APPROVED METHOD. CHIPPED AND MIXED INTO THE
TCPSOL
7. NEGATIVE IMPACTS TO DOWNSTREAM AREAS (OR RECEIVING WATERS) CAUSED BY EARTHWORK AND/0R CONSTRUCTION TO BE
MONITORED AND CORRECTED BY THE CONTRACTOR.
8. THE FIRST BLMP TO BE INSTALLED ON THE SITE SHALL BE CONSTRUCTION FENCE, MARKERS. OR OTHER APPROVED MEANS OF
DEFINING THE LIMITS OF CONSTRUCTION.
9. NATURAL VEGETATION SHALL BE RETAINED AND PROTECTED WHEREVER POSSIBLE. EXPOSURE OF 50L TO EROSION BY
REMOVAL 0P DISTURBANCE OF VEGETATION SHALL BE LIMITED TO THE AREA 0(0196ED FOR IMMEDIATE CONSTRUCTION
OPERATIONS
10 ALL CONSTRUCTOR TRAFFIC MUST ENTER/EXIT THE SITE THROUGH THE SWAP -APPROVED ACCESS POINTS.
11. THE LOCATIONS OF UNDERGROUND UTILITIES AS SHOWN HEREON ARE BASED ON VISIBLE E0DENCE FROM ABOVE GROUND
STRUCTURES, MARKINGS BY THE RESPECTIVE 010.411 COMPANIES ANO/OR THEIR LOCATOR SERVICES, AND DRAWINGS PROVIDED
BY THE UTUTY COMPARES. NO EXCAVATORS WERE MADE DURING THIS SURVEY TO DETERM'.NE EXACT LOCATORS AND
DEPTHS OF UNDERGROUND UTILITIES AND STRUCTURES. ACTUAL LOCATIONS MAY VARY SLIGHTLY FROM THOSE AS SHOWN
HEREON AND ADDITIONAL UNDERGROUND UTI.JTES MAY EXIST. EXISTENCE AND LOCATIONS OF ALL UNDERGROUND UTILITIES
AND STRUCTURES SHOULD BE VERIFIED PRIOR TO ANY CONSTRUCTICN ON THIS PROPERTY.
2. EXIS0NG SURVEY INFORMATION (INCLUDING EXISTING U1LI1ES) PROVIDED BY UINTAH ENGINEERING AND LAND SURVEYING.
`. BASIS OF BEARING: BEARINGS SHOWN HEREON ARE BASED ON THE LINE BETWEEN THE WEST QUARTER CORNER AND THE
SOUTHWEST CORNER OF 5ECTON 24, TOWNSHIP 4 SOUTH, RANGE 96 WEST OF THE 610 PRINCIPLE MERIDIAN. ELEVATIONS
SHOWN HEREON ARE BASED UPON NAND 29. COORDINATE DATA SHOWN HEREON IS BASED UPON A LOCAL COORDINATE
51570.1 DEVELOPED BY 0110011 ENGINEERING & LAND SURVEYING.
14, ORIGINAL DRAW0G SIZE 15 22.034'.
a,CPSWQ'�:f CPESC '
SITE DESCRIPTION
60
30
00
120
U
a
IN FEET 1
I INCH 60 FT. - /
CONTOUR INTERVAL = I FOOT,. ,•i"; l"-'
1 THE PROJECT 15 WHOLLY W11H1N PARCEL 1 191727400012, WINCH IS OWNED BY ENCANA OIL AND GAS (USA). IN MORE LEGAL
TERMS, IT IS LOCATED IN THE NORTHWEST 10 OF SECTOR 24, TOWNSHIP 4 SOUTH, RANGE 96 REST OF THE 6TH PRRICIPAL
MERIDIAN, GARFIELD COUNTY, COLORADO.
2. ACCORDING TO 114E NRCS WEB SITE, THE UPPER LAYER OF SOIL PRESENT AT THE PROJECT SITE CONSISTS OF
IRICUL-STARMAN CHANNERY LOANS (5-509 SLOPES), PARACHUTE -RHONE LOANS (5-309 SLOPES), AND RHONE LOAM
(30-700 SLOPES). THESE SOILS HAVE HYDROLOGIC SGL CLASSIFICATIONS OF (HIGH RUNOFF POTENTIAL) AND B (LOW TO
MODERATE RUNOFF POTENTIAL). THE WHOLE SOL EROSION N FACTOR FOR THESE SOILS VARIES BETWEEN 0.15 AND 0.20.
MEANING THESE SOILS ARE 911011 EROSIVE (LOW POTENTIAL FOR EROSION).
3. STORMWAIEN FROM THIS 511E 1.91 BE DISCHARGED FROM THE SITE THROUGH A SERIES OF EXISTING AND PROPOSED DITCHES.
CULVERTS. AND SEDIMENT PONDS. DRAINAGE FOR THIS AREA IS TO THE SOUTHWEST, NORTHWEST, AND EAST.
4. THE RECEIVING BODY OF WATER IS PICEANCE CREEK, APPROy0MATELY 11 1411ES DOWNSTREAM OF THE SITE.
5. CONSTRUCTION ACTIVITY WLL CONSIST OF, IN THE FOLLOW6G ORDER: ESTABLISHMENT OF PERIMETER STORMWATER BIAPS, SITE
CLEARING, TOPSOIL REMOVAL AND STOCKPILING. OVERALL GRADING OF THE PAD AND ROADS, BUILDING/EQUIPMENT
PAD/FOUNDATION CONSTRUCTION, 0181110 & EQUIPMENT INSTALLATIONS, BUILDING/EOU:PMENT CONSTRUCTOR, AND FINAL
SEEDING INTERMEDIATE STORMWAIER BLIPS WILL BE INSTALLED AND MAINTAINED THROUGHOUT CONSTRUCTION AS REQUIRED BY
THE CONTRACTOR'S MEANS AND METHODS.
6. 111E PRIMARY CONTAMINANT OF CONCERN FOR THIS SITE IS SED,AENT. THE PROPOSED EROSION CONTROLS HAVE BEEN
SELECTED AND PLACED TO MITIGATE THE POTENTIAL FOR SEDIMENT TRANSPORT FROM THE SITE.
7. EXISTING VEGETATION ON THE SITE CONSISTS PRIMARILY OF HIGH PLATEAU VEGETATION (OAK BRUSH, SAGE. MOUNTAIN
MAHOGANY, GRASSES, ETC.). UNDISTURBED PORTIONS 00 THE SITE ARE 80-909 VEGETATED.
8. THE 100 YEAR RUNOFF SCS CURVE NUMBERS FOR THIS SITE ARE 48 FOR UNDEVELOPED AREAS AND 91 FOR DEVELOPED
GRAVEL AREAS
UNCC
39500)090031130 Ka idtarsbei0VA
CALL 2 BU51NE55 DAYS IN ADVANCE BEFORE YOU
DIG. GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER WRITES.
'I
J
•
1
q. JJ
0700 Ps
c/a
B4
EROSION CONTROL MEASURES (PERFORMANCE STANDARDS)
BMP DETAILS PROVIDED IN APPENDIX E OF THE HUNTER RIDGE ENERGY SERVICES 110 MASTER STORMWATER MANAGEMENT PLAN. THE REQUIREMENTS STATED
IN THE HUNTER RIDGE ENERGY SERVICES LLC MASTER PLAN SHALL OVERRULE ANY CONFLICTING REQUIREMENTS STATED BELOW.
THE GENERAL REQUIREMENTS FOR EROSION CONTROL WORK SHALL BE AS FOLLOWS:
1. ANY GRADING SHALL BE CONDUCTED IN 511011 A MANNER TO EFFECTIVELY REDUCE ACCELERATED SOIL EROSION AND RESUL0NG SEDIMENTATION.
2. ALL GRADING SNAIL BE DESIGNED. CONSTRUCTED. AND COMPLETED TO MINIMIZE THE SZE AND DURATION OF EXPOSED (UNVEGETATED) AREA
3. SEDIMENT CAUSED BY ACCELERATED SOIL EROSION SHALL BE CAPTURED AND REMOVED FROM RUNOFF WATER PRIOR TO LEANNG THE SITE.
4. ANY TEMPORARY OR PERMANENT FACILITY DESIGNED AND CONSTRUCTED FOR THE CONVEYANCE OF WATER AROUND. THROUGH. OR FROM THE GRADED AREA
SHALL BE DESIGNED TO LIMIT THE WATER FLOW TO A NONEROSIVE VELOCITY.
5 TEMPORARY 501 EROSION CONTROL FAOUIIES SHALL BE REMOVED AND AREAS GRADED AND STABAIZED 10TH PERMANENT SOL EROSION CONTROL MEASURES.
6. ALL BMPs WALL DE IN PLACE PRIOR TO ANY MAJOR EARTHWORK.
AFTER CONSTRUCTION (PERMANENT MEASURES)
1. ALL AREAS DISTURBED BY CONSTRUCTION ACTIVITIES SHALL BE R060001AIED 841TH A CER95ED WEED -FREE NATIVE SEED MIX APPROPRIATE FOR SITE SOLS
AND CONDITIONS THESE AREAS SHALL BE MAINTAINED UNTIL A VEGETA1VE COVER OR AT LEAST 709 OF PRE -CONSTRUCTOR CONDITIONS EXISTS IF
NECESSARY. AD0110NAL SEED, MULCH, AND/OR FERTLI2ER SHOULD BE APPLIED TO ESTABLISH SAID VECETATIE COVER.
DURING CONSTRUCTOR (TEMPORARY MEASURES)
1. MATERIAL STOCKP005 SHALL BE BERMED AROUND THERM PERIMETER TO PREVENT RUNOFF POLLUTION.
2. PLACE WATTLES ANO/OR BERM DOWN GRADIENT OF DISTURBED AREAS AND STOCKPILES.
3. COMPACT SOL AND TOPSOIL TO THE REQUIREMENTS AS STATED IN 111E GEOTECHNICAL RECOMMENDATIONS AND FINISH GRADE TO ELEVATORS SHOWN ON TIE
SITE PLAN. ELIMINATE ANY LOW SPOTS PRIOR TO FINAL STABILIZATION.
4. CONTRACTOR SHALL HAVE A WATER TRUCK MADE AVAILABLE TO ASSIST IN CONTROLLING MOISTURE CONTENT AND DUST AND WAND EROSION.
5. SOILS THAT WALL BE STOCKPILED FOR MIRE THAN THIRTY (30) DAYS SHALL BE SEEDED AND MULCHED WITHIN FOURTEEN (14) DAYS OF STOCKPILE
CONSTRUCTION. NO STOCKPILES SHALL BE PLACED 0011115 ONE HUNDRED (100) FEET OF A DF0NAE WAY UNLESS APPROVED BY THE CSNAP ADMINISTRATOR.
6. THE CLEANING OF CONCRETE DELIVERY TRUCK CHUTES IS RESTRICTED TO APPROVED CONCRETE WASH OUT LOCATIONS ON THE ,EIB SITE. THE DISCHARGE OP
WATER CONTAINING WASTE CONCRETE TO THE STORM SYSTEM IS PROHIBITED. ALL CONCRETE WASTE SHALL BE PROPERLY CLEANED UP AND DISPOSED AT AN
APPROPRIATE LOCATOR.
MAINTENANCE
1. ALL EROSION CONTROL MEASURES SHOULD BE INSPECTED TO DETERMINE IF REPAIRS CIR SEDIMENT REMOVAL IS NECESSARY. THE MAXIMUM TIME BETWEEN
INSPECTIONS SNAIL BE 14 DAYS
2. EROSION CONTROL 9(0008E5 ARE ALSO TO BE INSPECTED WITHIN 48 HOVRS OF A STORM THAT PRODUCES MODERATE RUNOFF, OR MODERATE SNOW MELT.
3. REPAIRS OR MODIFICA0ONS TO THE EROSION CONTROL MEASURES SHALL BE COMPLETED IMMEDIATELY. REPAIRS AND 9004810011065 SHALL BE DOCUMENTED
(611AT. WIY. & WHEN).
4. SILT AND SEGMENT SHALL BE REMOVED IF THERE I5 A RISK OF SEDIMENT BYPASSING THE EROSION CONTROL FEATURE. SPECIFICALLY, SEDIMENT BUILDUP
SHALL N01 EXCEED 1/3 THE HEIGHT OF ANY CHECK DAM OR BERM (INCLU0NG INLET PROTECTOR). 1/2 THE HEIGHT OF A WATTLE, OR WHEN SEGMENT
WTI A SEDIMENT BASIN GETS 11171115 6 INCHES OF THE OUTLET INVERT.
5. WHEN THE TEMPORARY MEASURES ARE TO BE REMOVED. ANY SILT AND SEGMENT DEPOSITS SHALL BE REMOVED AND SPREAD EVENLY IN OPEN AREAS AND
SEEDED AS NECESSARY.
REVISIONS
NO.
DATE
DESCRIPTION
BY
BMP LEGEND
Insldlatan detass and maalenonce guidelines for the above erosion contra measures con be found In Appendix E of the
Hunter Rage Energy Services LLC Mosler Slormwoler Monogemenl Plan, COOT standards. on Denver's Urban Drainage and
Flood Control District website. and wrions manufacture's websites. Variations Worn these standards shall be approved by the
CSWMP Administrator prior to instollotian. This list Is not con&dered complete or obsolete, addilionol methods con and
should 5e added to t61a pion if required. This CSMAIP should be kept current and modified appropriately by the CSWAIP
AdminIslrotor based on octuol field conditions and the Contractors means and methods.
-AL-Am-
CL/
❑ ❑
XC/
CM
ANCHORED STRAW BALE
CHECK DAM•
COMPOST BLANKET
CONSTRUCTION FENCE
COMPOST FILTER BERM
CULVERT INLET PROTECTION
CONSTRUCTION MARKER
CULVERT OUTLET PROTECTOR
CONSTRUCTION SITE BOUNDARY
CONCRETE WASHOUT AREA
DEWATERING
DIVERSION DITCH
EROSION CONTROL BLANKET
EXISTING VEGETATIVE BUFFER
ESI$ EXISTING VEGETATIVE SWALE
® 0 FILTER BERM
HM
LG LAND GRADING
l i //!.///1 0 LEVEL SPREADER
HYDRAUUC MULCH
etAl
-PLY-rtY-
O RP
tIC
MATERIALS STORAGE AREA
PROTECT EXISTING VEGETATION
REINFORCED CHECK DAM
ROPE FENCE
RUN ON DIVERSION 011011
RETENTION POND
RPRAP / ROCK
REINFORCED ROCK BERM
REINFORCED ROCK BERM FOR CULVERT
PROTECTION
�-:1911 ROAD SIDE DITCH
0 REVEGETATION”
11
SLASH
($8) SB SEDIMENT BASIN
SEDIMENT CONTROL LOG / WATTLE
SILT FENCE
Q
0 SURFACE HARDENING
0 SEEDING AND MULCHING
OW STORAGE AREA
A SILT BERM
0 SEDIMENT TRAP
SUBSOIL STOCKPILE
TER TERRACING
® O TOILETS (PORTABLE)
_n_H_ TS TOPSOIL STOCKPILE
TSD TEMPORARY SLOPE DRAIN
TSC TEMPORARY STREAM CROSSING
®
TOPSOIL WINDROW WITH TEMPORARY
HYDRAULIC EROSION CONTROL
MULCH
OVEGETATIVE BUFFER
VEHICLE WRACKING CONTROL
V£M VEHICLE EQUIPMENT & MAINTENANCE
-se-es- O WATER BAR
- 1 O WING DITCH
`-6 O WASTE MANAGEMENT
-we-ww.- OSTRAW WATTLE
OVEHICLE TRACKING CONTROL
W1TH WHEEL WASH
s
1-4
• 08KKX Dome To Be Placed In Ditches A M4Nnum 01 Every Two Feel 01 Vertical RNlel
(4.e., Al Every 2' Conlan)
COVER 80TH HYDRAULIC MULCH
HUNTER RIDGE
ENERGY SERVICES LLC
411111 C O N S U L T 0 1. T S
MA Ramon Corti State 110 Pham 8)0241.4822
Grand Unlrtm Co 01510. Far BI0241 0041
5I OPER 3.1 OR MEA1EL
SURFACE ROUGHENING, TOPSOIL SPREADING.
BROADCAST SEEDING AMENDMENTS, AND
HYORAUUC EROSION CONTROL MULCH
af4FS IFCS THAN 3:1'
SURFACE ROUGHENING, TOPSOIL SPREADING.
DRILL SEEDING, AND CRIMPED STRAW MULCH
RIVER CITY
TOPSOIL WINDROW DURING CONSTRUCTION
TOPSOIL TO BE USED
ON NEW SLOPES
ED AND MULCH WN080W
TOPSOIL WINDROW DURING RECLAMATION
Hunter Ridge Energy Services LLC
Wolf Ranch Compressor Station
Pre -Construction Stormwater Management Plan
PROJECT /:1311-006
DRAWN BY: nmr
CHECKED BY: mJ(
SCALE
HORIZ: 1• 60'
VERT:
DATE ISSUED: 05.07.13
SHEET NO. 1 OF 3 SHEETS
12
682
60
eo
120
I IN FEET I
I INCH A. 60 FT.
CONTOUR INTERVAL = I FOOT
•
kms'"�Gj41!n
1-
/- (3 ,-1
GENERAL NOTES
25' (Typ.)
,dLoglIST. 4,41
g/ ice.
,-040011
Ae/ /
fes/
fir' EVB -/
I. MAP ADMINISTRATOR (LOCAL CONTACT). KATHY IAERTZ (970) 285-2626.
2. THE PROJECT AREA IS EQUAL TO THE ESTIMATED TOTAL AREA OF DISTURBANCE WHICH IS APPROXIMATELY 15.1 ACRES. THE
TOTAL AREA TO BE RE -VEGETATED IS APPROXIMATELY 2.6 ACRES.
3. AT ALL TIMES DURING CONSTRUCTION, ER0510N AND SEDIMENT CONTROL SHALL BE MAINTAINED BY THE CONTRACTOR_
4. EROSION CONTROL MEASURES SHALL BE INSTALLED AS 7140 WORK (GRADING) PROGRESSES.
5. DETALS SHOWN ARE SCHEMATIC ONLY. ADJUSTMENTS MAY BE NECESSARY TO FIT ACTUAL FIELD CONDITIONS.
6. EXISTING VEGETATION WILL BE REMOVED 04TH A HYDROAXE OR OTHER APPROVED METHOD. CHIPPED AND MIXED INTO THE
TOPSOL
7. NEGATIVE IMPACTS TO DOWNSTREAM AREAS (CR RECEIVING WATERS) CAUSED BY EARTHWORK AND/0R CONSTRUCTION TO BE
MONITORED AND CORRECTED BY THE CONTRACTOR.
8 THE FIRST BMP TO BE INSTALLED ON THE SITE SHALL RE CONSTRUCTION FENCE. MARKERS, OR OTHER APPROVED MEANS O
DEFINN6 THE WHITS OF CONSTRUCTION.
0. NATURAL VEGETATION SHALL BE RETAINED AND PROTECTED WHEREVER P0551860. EXPOSURE OF SOL TO EROSION BY
REMOVAL OR DISTURBANCE OF VEGETATION SHALL BE UNITED TO THE AREA REQUIRED FOR IMMEDIATE CONSTRUCTION
OPERATIONS
10. ALL CONSTRUCTION TRAFFIC MUST ENTER/EXIT THE SITE THROUGH THE SW*IP-APPROVED ACCESS POINTS.
11. THE LOCATIONS OF UNDERGROUND MUTES AS SHOWN HEREON ARE BASED ON 8981E ENDENCE FROM ABOVE GROUND
STRUCTURES, MARKINGS BY THE RESPECTIVE UTILITY COMPANIES AND/OR THEIR LOCATOR SERVICES, AND DRAWINGS PROVIDED
BY THE UTIUTY COMPANIES. 4<0 EXCAVATIONS WERE MADE DURING THIS SURVEY TO DETERMINE EXACT LOCATIONS AND
DEPTHS OF UNDERGROUND UT9JTIES MO STRUCTURES. ACTUAL LOCATIONS MAY VARY SLIGHTLY FROM THOSE AS SHOWN
HEREON AND ADDITIONAL UNDERGROUND UTILITIES MAY EXIST. EXISTENCE AND LOCATIONS OF ALL UNDERGROUND UTILITIES
AND STRUCTURES SHOULD BE VERGED PRIOR TO ANY CONSTRUCTION ON THIS PROPERTY.
2. EXISTING SURVEY INFORMATION (INCLUDING EXISTING U1U11ES) PROVIDED BY UINTAH ENGINEERING AND LAND SURVEYING.
3. BASIS O BEARING: BEARINGS SHOWN HEREON ARE BASED ON THE UNE BETWEEN THE WEST QUARTER CORNER AND 111E
SOUTHWEST CORNER OF SECTION 24, TOWNSHIP 4 SOUTH, RANGE 96 WEST OF THE 6111 PRINCIPLE MERIDIAN. ELEVATIONS
SHOWN HEREON ARE BASED UPON NAIAD 29. COORDINATE DATA SHOWN HEREON 15 BASED UPON A LOCAL COORDINATE
SYSTEM DEVELOPED BY 0IN1M ENGINEERING & LAND SURVEYING.
14. ORIGINAL DRAWING SIZE 15 22.034".
4 94 ^bbV
iASVV� 4 CPESC
SITE DESCRIPTOR
/
1. THE PROJECT IS WHOLLY WITHIN PARCEL / 191727400012, WHICH IS OWNED BY ENCMA OL AND GAS (USA). IN MORE LEGAL
TERMS. IT I5 LOCATED IN THE NORTHWEST 1j OF SECTION 24. TOWNSHIP 4 SOUTH, RANGE 96 WEST OF THE STH PRINCIPAL
MERIDIAN, GARFIELD COUNTY, COLORADO.
2. ACCORDING TO THE NRCS NEB SITE, THE UPPER LAYER OF SOL PRESENT AT THE PROJECT SITE CONSISTS OF
IRHAA-STARMAN CHMNERY LOANS (5-50X SLOPES), PARACHUTE -RHONE LOANS (5-300 SLOPES), AND RHONE LOAM
(30-705 SLOPES). THESE SOILS HAVE HYDROLOGIC SOL CLA59FlCATIONS Of D (HIGH RUNOFF POTENTIAL) AND B (LOW TO
MODERATE RUNOFF POTENTIAL). THE WHOLE SOIL ER090N K FACTOR FOR THESE SOLS VARIES BETWEEN 0.15 AND 0.20,
MEANING THESE SOLS ARE MILDLY ER09VE (LOW POTENTIA FDR ER090N).
3. STORMWATER FROM THIS SITE TILL BE DISCHARGED FROM THE SITE THROUGH A SERIES OF EXISTING AND PROPOSED DITCHES,
CULVERTS, AND SEDMENT PONDS. DRAINAGE FOR THIS AREA IS TO THE SOUTHWEST, NORTHWEST, AND EAST.
4. THE RECEI8NG BODY OF WATER IS PICEANCE CREEK, APPROXIMATELY 11 MILES DOWNSTREAM OF THE SITE.
5. CONSTRUCTION AC118TY Niel CONSIST OF, IN THE FOLLOTING ORDER: ESTABLISHMENT OF PERIMETER STORMWATER BAPS, 910
CLEARING. TOPSOIL REMOVAL AND STOCKPILING. OVERALL GRADING OF THE PAD AND ROADS, BUILDING/EQUIPMENT
PAD/FOUNDATION CONSTRUCTION, UTILITY & EQUIPMENT INSTALLATIONS, BUILDNG/ECM:PI/ENT CONSTRUCTION, AND FINAL
SEEDING. INTERMEDIATE STOTYWATER BAPS WALL BE INSTALLED AND MAINTAINED THROUGHOUT CONSTRUCTION AS 600410ED BY
THE CONTRACTOR'S MEANS AND METHODS.
6. THE PRIMARY CONTAMINANT OF CONCERN FOR THIS STE IS SEDIMENT. TIE PROPOSED ER09OJ CONTROLS HAW BEEN
SELECTED AND PLACED TO MITIGATE THE POTENTIAL FOR SEDIMENT TRANSPORT FROM THE SITE.
7. EXISTING VEGETATION ON THE SITE CON9ST5 PRIMARILY OF HIGH PLATEAU VEGETATION (OAK BRUSH. 5AGE, MOUNTAIN
MAHOGANY, GRASSES. ETC.). UNDISTURBED PORTIONS OF THE SITE ARE 80-90% VEGETATED.
8. THE 100 YEAR RUNOFF SCS CURVE NUMBERS FOR MIS SITE ARE 48 FOR UNDEVELOPED AREAS AND 91 FOR DEVELOPED
GRAVEL AREA5.
4.0
UNCC
YsIuipeni/o.
CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU
OIG. GRADE, 0R EXCAVATE FOR THE MARKING O
UNDERGROUND MEMBER UTLITE5.
Obr
�- Vim•-/
A
ER090N CONTROL MEASURES (PERFORMANCE STANDARDS)
BMP DETAILS PRO8DE0 IN APPENDIX E OF THE HUNTER RIDGE ENERGY SERVICES LLC MASTER STORMWATER MANAGEMENT PLAN. THE REQUIREMENTS STATED
IN THE HUNTER RIDGE ENERGY SERVICES LLC MASTER PUN SHALL OVERRULE ANY CONFLICTING REDUIREMENT5 STATED BELOW.
THE GENERAL REQUIREMENTS FOR EROSION CONTROL YORK SHALL BE AS FOLLOWS
1. ANY GRADING SHALL BE CONDUCTED RI SUCH A MANNER TO EFFECTIVELY REDUCE ACCELERATED SOL EROSION AND RESULTING SEDIMENTATION.
2. ALL GRADING SHALL BE DESIGNED. CONSTRUCTED. AND COMPLETED 10 MINIMIZE THE SIZE AND DURATION OF EXPOSED (UNVEGETATED) AREA.
3. SEDI10141 CAUSED BY ACCELERATED SOIL ER090N SHALL BE CAPTURED AND REMOVED FROM RUNOFF WATER PRIOR TO LEAVNG THE 91E.
4. MY TEMPORARY OR PERMANENT FACILITY DESIGNED 680 CONSTRUCTED FOR THE CONVEYANCE OF WATER AROUND, THROUGH. OR FROM THE GRADED AREA
SHALL BE DE901ED TO 1.11.11T THE WATER FLOW TO A NON-EROSIVE VELOCITY.
5. TEMPORARY 501L EROSION CONTROL FACI0TES SHALL BE REMOVED MD AREAS GRADED AND STABILIZED WITH PERMANENT SOL EROSION CONTROL MEASURES.
6. ALL BMA WILL BE IN PLACE PRIOR TO ANY MAJOR EARTHWORK.
AFTER CONSIRUCTIO (PERMANENT MEASURES)
1. ALL AREAS DISTURBED BY CONSTRUCTION ACTIVITIES SHALL 8E 806660TAIED MTH A CERTIFIED REED -FREE NATIVE SEED 11I0 APPROPRIATE FOR 9TE SOILS
AND 008OITI0 0. THESE AREAS SHALL 8E MAINTAINED UNTIL A VEGETATIVE COVEN OR AT LEAST 705 OF PRE -CONSTRUCTION CONDITIONS EXISTS. IF
NECESSARY, MORONIC SEED. MULCH, AND/OR FERTILIZER SHOULD BE APPLIED TO ESTABLISH SAD VEGETATIVE COVER.
DURING CONSTRUCTOR (TEMPORARY MEASURES)
1. MATERIAL STOCKPILES SHALL BE BERME) AROUND THEN PERIMETER TO PREVENT RUNOFF POLLUTION.
2. PLACE WATTLES AND/OR BERM DOWN GRADIENT OF DISTURBED MEAS AND STOCOPILES.
3 COMPACT SOL ARD TOPSOIL TO THE REQUIREMENTS AS STATED IN THE GEOTECHNICAL RECOMMENDATIONS AND FINISH GRADE TO ELEVATIONS SHOWN ON TIE
SITE PLAN. ELIMINATE ANY LOW SPOTS PRIOR TO FINAL STABILIZATION.
4. CONTRACTOR SHALL HAVE A WATER TRUCK MADE AVAILABLE TO ASSIST 01 C0NIROLUNG MOISTURE CONTENT AND DUST AND WIND ER090N.
5. SOILS THAT WILL 40 STOCKPILED FOR MORE THAN THIRTY (30) DAYS SHALL BE SEEDED AND MULCHED WITHIN FOURTEEN (14) DAIS OF STOCKPILE
004191RUCTON. NO STOCKPILES SHALL BE PLACED WITHIN ONE HUNDRED (100) FEET OF A DRAINAGE WAY UNLESS APPROVED BY THE CSWIAP ADMINISTRATOR
fi. THE CLEANING O CONCRETE DELIVERY TRUCK CHUTES I5 RESTRICTED TO APPROVED CONCRETE WASH OUT LOCATIONS ON THE JOB 91E. THE 0508685E or
WATER CONTAINING WASTE CONCRETE TO THE STORM SYSTEM 15 PROHIBITED. ALL CONCRETE WASTE SHALL BE PROPERLY CLEANED UP AND DISPOSED AT All
APPROPRIATE LOCATION.
MAINTENANCE
1. ALL ER090N CONTROL MEASURES SHOULD 8E INSPECTED TO DETERMINE IF REPAIRS OR SEDIMENT REMOVAL IS NECESSARY. THE MAXIMUM TME BETWEEN
INSPECTIONS SHALL BE 14 DAIS.
2. EROSION CONTROL MEASURES ARE ALSO TO BE INSPECTED WITHIN 48 HOURS OFA STORM THAT PRODUCES MODERATE RUNOFF, OR MODERATE SNOW MELT.
3 REPAIRS OR MODIHCATION5 TO THE EROSION CONTROL MEASURES SHALL BE COMPLETED IMMEDIATELY. REPAIRS AND MODIFICATIONS SHALL BE DOCUMENTED
(WHAT. WHY. & WHEN).
A. SILT AND SEDIMENT SHALL BE REMOVED IF THERE IS A RISK OF SEDIMENT BYPASSING THE EROSION CONTROL FEATURE. SPECIFICALLY. SEDIMENT BUILDUP
SHALL NOT EXCEED 1/3 THE HEIGHT OF ANY CHECK DAM OR BERM (240100'86 INLET PROTECTION). 1/2 THE HEIGHT OF A WATTLE. OR MEN SEDIMENT
WTHN A SEDIMENT BASIN GEIS WITHIN 6 INCHES OF 1110 OUTLET INVERT.
5. WHEN THE TEMPORARY MEASURES ARE TO BE REMOVED. ANY SILT AND SED'MENT DEPOSITS SHALL BE REMOVED AND SPREAD EVENLY IN OPEN AREAS AND
SEEDED AS NECESSARY.
REVISIONS
NO.
DATE
DESCRIPTION
BY
BMP LEGEND
Instollol6n details and molnlenunce guidelines ler the oboe erosion control measures con be found in Appendix E of the
Hunter Ridge Energy Services LLC Mosler 5tormw0ter Management Am, COOT standards, on Denver's Ur6on Drainage and
Flood Control District website, ontl various onulacture's websites Variations from these standards Moll be opproved by the
CSWMP Administrator prior to Insloilatlan. This list 0 not considered complete or absolute, additionel methods can and
should es added to this pion if required. This CSW11P should be kept current and modified appropriately by the C5861P
Administrator based on actual field conditions ono the Contractor's means and methods.
ANCHORED STRAW BALE
0 CHECK DAM•
0 COMPOST BLANKET
0 CONSTRUCTOR FENCE
CFB COMPOST FILTER BERM
CULVERT INLET PROTECTION
CONSTRUCTION MARKER
CULVERT OUTLET PROTECTION
CCN5TIUCTION SITE BOUNDARY
CONCRETE WASHOUT AREA
DEWATERING
0 DIVERSION DITCH
CM
EROSION CONTROL BLANKET
EXISTING VEGETATIVE BUFFER
`_-I/ EV$ EXISTING VEGETATIVE SWALE
0 FILTER BERM
HYDRAULIC MULCH
LG LG LAND CRAD:NG
(2EKI 0 LEVEL SPREADER
MATERIALS STORAGE AREA
PROTECT EXISTING VEGETATION
REINFORCED CHECK DAM
ROPE FENCE
RUN ON DIVERSION DITCH
RETENTION POND
RPRAP / ROCK
REINFORCED ROCK BERM
REINFORCED BOCK BERM FOR CULVERT
PROTECTION
RV
-9-9-
(-E3...)
9-9-B SB
r.•J
- WS- se-
ROAD SIDE DITCH
RE2GE1ARON••
SLASH
SEDIMENT BASIN
SEDIMENT CONTROL LOG / WATTLE
9LT FENCE
SURFACE HARDENING
SEEDING AND MULCHING
SNOW STORAGE AREA
SOL SLT BERN
0 SEDIMENT TRAP
•1.I I'
r --i
1=1
SUBSOIL STOCKPLE
TERRACING
1OLET0 (PORTABLE)
TOPSOIL STOCKPILE
TEMPORARY SLOPE DRAIN
TEMPORARY STREAM CR059NG
C)TOPSOILWINDROW WITH TEMPORARY
T$W HYDRAULIC EROSION CONTROL
MULCH
OVEGETATIVE BUFFER
1/TC VEHICLE TRACKING CONTROL
VEM VEHICLE EOUIPMENT & MAINTENANCE
OWATER BAR
OTANG DITCH
OWASTE MANAGEMENT
STRAW WATTLE
OVEHICLE TRACKING CONTROL
WTI WHEEL WASH
08004. Dams To Be Placed In DItthef A Minimum 01 Every two Feet 01 Vertical Relief
(I.e., Al Every 2' Contour)
COVER 'MTH HYDRAULIC MULCH
HUNTER RiDGE
ENERGY SERVICES LLC
90PFS 91 OR GREATER:
SURFACE ROUGHENING, 1OP5OL SPREADING,
BROADCAST SEEDING AMENDMENTS, AND
HYDRAU0C EROSION CONTROL 11111.CH
9 OPER LESS THAN 3.1.
SURFACE ROUGHENING, TOPSOIL SPREADING.
DRILL SEEDING. AND CRIMPED STRAW MULCH
RIVER CITY
004298 L T A N T S
744 Harm Court. SAM 110 Pia,: 870.241.4722
Gmnd Junrwn On 131508 Far Bra 2418941
TOPSOIL WINDROW DURING CONSTRUCTION
SEED AND MULCH WINDROW
TOPSOIL WINDROW DURING RECLAMATION
Hunter Ridge Energy Services LLC
Wolf Ranch Compressor Station
Construction Stormwoter Management Plan
PRO.ECT *1311-006
SCALE
DRAIAN BY: nmr
CHECKED BY: m)M
DATE ISSUED: 05.07.13
H0R12: 1w 60'
VERT: SHEET NO. 2 OF 3 SHEETS
13
0
eo
so
me
I IN FEET 1
I INCH = 60 FT.
CONTOUR INTERVAL = 1 FOOT
rt-
1.111111111111111111111
r
GENERAL NOTES
1. 51811' ADMINISTRATOR (LOCAL CONTACT): KATHY VER112 (970) 285-2626.
2. THE PROJECT AREA 15 EQUAL TO THE ESTIMATED TOTAL AREA OF DISTURBANCE WHICH IS APPROXIMATELY 15.1 ACRES. THE
TOTAL AREA TO BE RE -VEGETATED I5 APPROXIMATELY 2.6 ACRES.
3. AT ALL TINES DURING CONSTRUCTOR, EROSION AND SEDIMENT CONTROL SHALL BE MAINTAINED BY THE CONTRACTOR.
4. EROSION CONTROL MEASURES SHALL BE INSTALLED A5 1HE WORK (GRADING) PROGRESSES.
S. DETAILS SHOWN ARE SCHEMATIC ONLY. ADJUSTMENTS MAY BE NECESSARY TO FIT ACTUAL FIELD CONDITIONS.
5. EXISTING VEGETATION WILL BE REMOVED WTH A HYDROAXE OR OTHER APPROVED METHOD, CHIPPED AND 01XED INTO THE
TOPSOIL
7. NEGATIVE IMPACTS TO DOWNSTREAM AREAS (OR RECEIVING WATERS) CAUSED BY EARTHWORK AND/OR CONSTRUCTION TO BE
MONITORED AND CORRECTED BY 171E CONTRACTOR.
8. TINE FIRST BMP TO BE INSTALLED ON THE SITE SHALL BE CONSTRUCTOR FENCE, MARKERS, OR OTHER APPROVED MEANS OF
DEFINING THE LIMITS 65 CONSTRUCTOR.
9. NATURAL VEGETATION SHALL BE RETAINED AND PROTECTED WHEREVER P0551BLE. EXPOSURE OF 5040. TO EROSION 8Y
REMOVAL OR DISTURBANCE OR VEGETATION SHALL BE LIMITED TO THE AREA REWIRED FOR IMMEDIATE CONSTRUCTION
OPERATIONS.
10. ALL CONSTRUCTION TRAFFIC MUST ENTER/EXIT 711E ITE THROUGH THE SWAP -APPROVED ACCESS POINTS
11. THE LOCATIONS OF UNDERGROUND UTUTES AS SHOWN HEREON ARE BASED W VISIBLE EVIDENCE FROM ABOVE GROUND
STRUCTURES, 80661005 8Y THE RESPECTIVE UTILITY COMPANIES AND/OR THEIR LOCATOR SERVICES. AND DRAWINGS PROVIDED
BY THE UTILITY COMPANIES. NO E%CAVATIWS WERE MADE DURING THIS SURVEY TO 067668INE EXACT LOCATIONS AND
DEPTHS OF UNDERGROUND UTILITIES AND STRUCTURES, ACTUAL LOCATORS MAY VARY SLIGHTLY FROM THOSE AS SHOWN
HEREON AND ADDI0ONAL UNDERGROUND 0111.11165 MAY EXIST. EXISTENCE AND LOCATORS OF ALL UNDERGROUND UTILITIES
AND STRUCTURES SHOULD BE VERIFIED PRIOR TO ANY CONSTRUCTION W THIS PROPERTY.
12. EXISTING SURVEY INFORMATION (INCLUDING Ew5TNG U0LI0ES) PROVIDED BY UINTAH ENGINEERING AND LAND SURVEYING.
3. BASIS OF BEARING: BEARINGS SHOWN HEREON ARE BASED W THE UNE BETWEEN THE WEST QUARTER CORNER AND ME
SOUTHWEST CORNER Of =non 24, TOWNSHIP 4 SOUTH. RANGE 96 WEST OF THE 6TH PRINCIPLE MERIDIAN. ELEVATORS
SHOWN HEREON ARE BASED UPON NAM 29. COOROHAIE DATA SHOWN HEREON 15 BASED UPON A LOCAL COORDINATE
SYSTEM DEVELOPED BY 010109 ENGINEERING 8 LAND SURVEYING.
14. ORIGINAL DRAWING SIZE 15 22X34'.
511E DESCRIPTION
1. THE PROJECT IS WHOLLY 11111160.1 PARCEL / 191727400012, WHICH 15 OWNED BY ENCANA CIL AND GAS (USA). IN MORE LEGAL
TER4S, IT 15 LOCATED IN ME NORTHWEST % OF SECTOR 24, TOWNSHIP 4 SOUTH, RANGE 96 WEST OR THE 8111 PRINCIPAL
MERIDIAN, 066061D COUNTY, COLORADO.
2. ACCORDING TO THE MRCS WEB SITE, THE UPPER LAYER OF SOL PRESENT AT THE PROJECT 517E CONSISTS OF
IRIGUL-STAR0AN CHANNERY LOAM5 (5-508 SLOPES), PARACHUTE -RHONE LOANS (5-308 SLOPES), AND RHONE LOAM
(30-706 SLOPES). THESE SOILS HAVE HYDROLOGIC SOL CLASSIFICATIONS 06 D (HIGH RUNOFF POTENTIAL) AND B (LOW TO
MODERATE RUNOFF POTENTIAL). THE WHOLE SOL EROSION K FACTOR FOR THESE SOILS VARIES BETWEEN 0.15 AND 0.20,
MEANING THESE SOLS ARE MILDLY EROSIVE (LOW POIENTAL FOR EROSION).
3. 51086WATER FROM THIS STE 991. BE DISCHARGED FROM THE SITE THROUGH A SERIES 06 EXISTING AND PROPOSED DITCHES,
CULVERTS. AND SEDIMENT PONDS. DRAINAGE FOR THIS AREA 15 TO THE SOUTHWEST, NORTHWEST, AND EAST.
4. THE RECEMNG BODY OF WATER IS PICEANCE CREEK. APPROXIMATELY 11 MILES DOWNSTREAM OF THE SITE.
5. CONSTRUCTOR ACTNTY RILL CONSIST OF, IN THE FOLOWNG ORDER: ESTABUSITYENT OF PERIMETER STONMWATER BAPS. SITE
CLEARING, WPS041 REMOVAL AND STOCKPILING, OVERALL GRADING OR THE PAD AND ROMA BIALDLRUCTO PAENT
PAD/FG. INTERMEDIATE
CpESTRUCTION, UTILITY 8 EQUIPMENT INSTALLATIONS, BTAINE THROUGHOUT
CONSTRUCTOR, AND FINAL
THE CON RACTOE01ATE NS AND
BLIPS WILL BE INSTALLED AND MAINTAINED TINROUGIIQUT CORSMUCTON AS REWIRED BY
THE CONTRACTOR'S MEANS AND METHODS.
6. PRIMARY CONTAMINANT OF CONCERN FOR THIS 611E 15 I SEDIMENT. 171E PR060500 EROSION CONTROLS HAVE BEEN
SELECTED AND PLACED TO MITIGATE THE POTENTIAL FOR SEDIMENT TRANSPORT FROM ME SITE
7. EXISTING VEGETATION ON THE SITE CONSISTS PRIMARILY OF HIGH PLATEAU VEGETATION (OAK BRUSH, SAGE, MOUNTAIN
MAHOGANY, GRASSES, ETC.). UNDISTURBED PORTIONS OF THE 511E ARE 80-9001 VEGETATED.
8. THE IE 1 1000 YEAR RUNOFF SCS CURVE NUMBERS FOR THIS SITE ARE 48 FOR UNDEVELOPED AREAS AND 91 FOR DEVELOPED
GRAVEL AREAS.
UNCC
00040' 091 t„0I Ilw nY.lti below.
CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU
DIG, GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER UPU0E5.
of
EROSION CONTROL MEASURES (PERFORMANCE STANDARDS)
BMP OETAL5 PROVIDED IN APPENDIX E OF THE HUNTER RIDGE ENERGY SERVICES 11.0 MASTER STDRMWATER MANAGEMENT PLAN. THE 060010EMENIS STATED
IN THE HUNTER RIDGE ENERGY SERVICES LLC MASTER PLAN SHALL OVERRULE ANY CONFLICTING REO,60606NTS STATED BELOW.
THE GENERAL REOUM1REMENTS FOR EROSION CONTROL WORK SHALL BE AS FOLLOWS:
1. ANY GRADING SHALL BE CONDUCTED IN SUCH A MANNER TO EFFECTIVELY REDUCE ACCELERATED 501L EROSION AND RESULTING SEDIMENTA0ON.
2. ALL GRADING SHALL BE DESIGNED, CONSTRUCTED. AND COMPLETED TO MINIMIZE ME SIZE AND DURATION OF EXPOSED (WNVEGETAIEO) AREA
3. SEDIMENT CAUSED BY ACCELERATED SOIL EROSION SHALL BE CAPTURED AND REMOVED FROM RUNOFF WATER PRIOR TO LEAVING THE SITE.
4. ANY TEMPORARY OR PERMANENT FACILITY DESIGNED AND CONSTRUCTED FOR THE CONVEYANCE OF WATER AROUND, THROUGH, OR FROM THE GRADED AREA
SHALL BE DE51GYED TO 11010 THE WATER FLOW TO A NON-EROSIVE VELOCITY.
5. TEMPORARY SOIL EROSION CONTROL FACILITIES SHALL BE REMOVED AND AREAS GRADED AND STABILIZED WITH PERMANENT SOL EROSION CONTROL MEASURES.
6. ALL BMP. RILL BE IN PLACE PRIOR TO ANY MAJOR EARTHWORK.
AFTER CONSTRUCTKXI (PERMANENT MEASURES)
1. ALL AREAS DISTURBED BY CONSTRUCTION ACTIVITIES SHALL BE 660606TATED WITH A CERTIFIED WEED -FREE NATIVE SEED MIX APPROPRIATE FOR ITE SOLS
AND CONDI6ONS. THESE AREAS SHALL BE MAINTAINED UNTIL A VEGETATIVE COVER OR AT LEAST 708 OF PRE -CONSTRUCTION CONDITIONS EXISTS. IF
NECESSARY. ADO TONAL SEED, MULCH, AND/OR FERTILIZER SHOULD BE APPLIED TO ESTABLISH SAD VEGETA5VE COVER
DURING CONSTRUCTOR (TEMPORARY MEASURES)
1. MATERIAL STOCKPILES SHALL BE BERRIED AROUND THE1R PERIMETER TO PREVENT RUNOFF POLLUTION.
2. PLACE WATTLES AND/OR BERM DOWN GRADIENT OF DISTURBED AREAS AND STOCKPILES.
3. COMPACT SC41 AND TOPSOIL TO THE REOU0EMENTS AS STATED IN ME GEOTECHNICAL RECOMMENDATIONS AND FINISH GRADE TO ELEVATIONS SHOWN ON THE
SITE PLAN. ELIMINATE ANY LOW SPOTS PRIOR TO FINAL STABILIZATION.
4. CONTRACTOR SHALL HAVE A WATER TRUCK 1/A0E AVAILABLE TO ASSIST IN CONTROLLING MOISTURE CONTENT AND DUST AND WIND EROSION.
5. SOILS THAT WILL BE STOCKPILED FOR MORE THAN THIRTY (30) DAYS SHALL BE SEEDED AND MULCHED WITHIN FOURTEEN (14) DAYS a6 STOCKPILE
CONSTRUCTION. NO STOCKPILES SHALL BE PLACED WITHIN ONE HUNDRED (100) FEET OF A DRAINAGE WAY UNLESS APPROVED BY THE CSWMP ADMIMSTRATCR.
6. THE CLEANING OF CONCRETE DELIVERY TRUCK CHUTES 15 RESTRICTED TO APPROVED CONCRETE WASH OUT LOCATIONS ON THE JOB SITE. THE DISCHARGE 05
WATER CONTAINING WASTE CONCRETE TO THE STORM SYSTEM I5 PROHIBITED. ALL CONCRETE WASTE SHALL BE PROPERLY CLEANED UP AND DISPOSED AT AN
APPROPRIATE LOCATION.
MAINTENANCE
1. ALL EROSION COHIROL MEASURES SHOULD BE INSPECTED TO DETERMINE IF REPAIRS OR SEDIMENT REMOVAL 15 NECESSARY. THE MAXIMUM TME BETWEEN
INSPECTORS SHALL BE 14 DAYS.
2. EROSION CONTROL MEASURES ARE ALSO TO BE H5PECTEO WITHIN 48 HOURS OF A STORM THAT PRODUCES MODERATE RUNOFF, OR MODERATE SNOW MELT.
3. REPAIRS OR MODIFICATIONS TO THE EROSION CONTROL MEASURES SHALL BE COMPLETED IMMEDIATELY. REPAIRS AND MODIFICATIONS SHALL BE DOCUMENTED
(WHAT. WHY, 8 WHEN).
4. SILT AND SEDIMENT SHALL BE REMOVED IF THERE 15 A RI511 OF SEDIMENT BYPASSING THE EROSION CONTROL FEATURE. SPECIFICALLY. SEDIMENT BUILDUP
SHALL NOT EXCEED 1/3 THE HEIGHT OF ANY CHECK DAM OR BERM (INOLUD:0 INLET PROTECTOR), 1/2 THE HEIGHT OF A WATTLE. OR WHEN SEDIMENT
WINN A SEDIMENT BASIN GETS WITHIN 6 INCHES 05 THE OUTLET INVERT.
5. WHEN THE TEMPORARY MEASURES ARE TO BE REMOVED, ANY SILT AND SEDIMENT DEPOSITS SHALL BE REMOVED AND SPREAD EVENLY IN OPEN AREAS AND
SEEDED AS NECESSARY.
REVISIONS
N0.
DATE
DESCRIPTION
BY
BMP LEGEND
Installation details and maintenance gulalmee for the move erosion control measures con be found In Appendix E of the
Hunter Ridge Energy Services LLC Master Stormwater Monogemenl Plan, 500T standards. on Denver's Urban Drainage and
Flood Colrol District website, ond various laclure's websites. 901101ans horn these standards shall be opprov00 by the
CSWMP Administrator prior to Installation. Th1e 1161 0 not considered complete or obs0ute, additional methods con and
should be added to this Pion if required. 1hls CSWMP should be kept current and modified operaprlately by the CS'MIP
Admalslralor bused on oatao1 field condltlons and the Contractor's moons and methods.
0 0
DW
DD
ANCHORED STRAW BALE
CHECK DAM'
COMPOST BLANKET
CONSTRUCTOR FENCE
COMPOST FILTER BERM
CULVERT INLET PROTECTION
CONSTRUCTION MARKER
CULVERT OUTLET PROTECTOR
CONSTRUCTOR SITE BOUNDARY
CONCRETE WASHOUT AREA
DEWATERING
DIVERSION 131614
EROSION CONTROL BLANKET
EXIS0NG VEGETATIVE BUFFER
EV$ EXISTING V 061004E SWALE
® 0 FILTER BERM
-0-
I /1/2, //z I
LG ----I///////I LS
HYDRAULIC MULCH
LAND GRADING
LEVEL SPREADER
MATERIALS STORAGE AREA
PROTECT EXISTING VEGETATION
REINFORCED CHECK DAM
ROPE FENCE
RUN ON DIVERSION DITCH
RETENTION POND
RIPRAP / 6001(
REINFORCED ROCK BERM
REINFORCED ROCK BERM FOR CULVERT
PROTECTION
ROAD SIDE 01001
0 REVEGETAl10N"
SLASH
SB
0 SEDIMENT BASIN
LJ
SEDIMENT CONTROL LOG / WATTLE
SILT FENCE
0 SURFACE HARDENING
SM SEEDING AND MULCHNG
SNOW STORAGE AREA
SILT BERM
=% 0 SEDIMENT TRAP
-se-9s-
'l•%i•'V564'.
r-�
SUBSOIL STOCKPILE
TERRACING
TOUTS (PORTABLE)
TOPSOIL STOCKPILE
TEMPORARY SLOPE DRAIN
TEMPORARY STREAM CROSSING
®TOPSOIL WINDROW 64144 TEMPORARY
HYDRAULIC EROSION CONTROL
MULCH
VEGETATIVE BUFFER
VEHICLE TRACKING CONTROL
VEHICLE EQUIPMENT & MAINTENANCE
WATER BAR
WING CITCH
WASTE MANAGEMENT
STRAW WATTLE
VEHICLE TRACKING CONTROL
WITH WHEEL WASH
Check Dame To Be Placed In Ditches A Minimum 01 Every Two Feel Of 001001 Relief
(It., At Every 2' Contour)
COVER WTI HYDRAULIC MULCH
HUNTER RIDGE
ENERGY SERVICES LLC
7241407207 C09,1. E '0 110
Gland 1761499 rn 111999
5'OPES 3:1 0R 5666166'
SURFACE ROUGHENING, TOPSOIL SPREADING,
BROADCAST 5EERIG AMENDMENTS, AND
HYDRAULIC EROSION CONTROL MULCH
SIOPES 1E54 THAN 31 -
SURFACE ROUGHENING. TOPSOIL SPREADING,
EMU. SEEDING, AND CRIMPED STRAW MULCH
RIVER CITY
0 0 h 5 U LT 1, T
01010.77 970.241.4722
57r 970 24119941
TOPSOIL WINDROW DURING CONSTRUCTION
SEED AND MULCH WNOROw
TOPSOIL WINDROW DURING RECLAMATION
Hunter Ridge Energy Services LLC
Wolf Ranch Compressor Station
Post -Construction Stormwater Management Plan
PROJECT /:1311-008
SCALE
DRAWN BY: nmr
CHECKED BY: m}
HORIZ: 1' 60'
VERT:
DATE ISSUED: 05.07.13
SHEET N0. 3 OF 3 SHEETS
14