HomeMy WebLinkAbout03916GARFIELD COUNTY BUILDING AND SANITATION DEPARTMENT
109 8th Street Suite 303
Glenwood Springs, Colorado 81601
Phone (303) 945-8212
INDIVIDUAL SEWAGE DISPOSAL PERMIT
PROPERTY
Permtt N~ 3916
A .. e~r's Parcel No.
Ot I l) 5:.. :35 3>-01-oJ.3
This does not constitute
a building or use permit.
Owner's Name~G_w.~lJ'-'--,,,_rY/_Cl_RK __ Present Address rxiH ca. k ln. G. 5. G gU,'lt.one qy 5-'7 30 '!
System Location _ _,_,o'-=).~ti~o'-----'""O=a....!'..l<--=--:_La=.:..=._m_,_,,___-'G:=--. s=--:'_cg"--'-1-""~o"-'{ _________ _
Legal Description of Assessor's Parcel No. _.,.lat_",,_.__JJ;_..J.f<-.L_~@s-=~&'--"'"""'--(l'"l(_-=-_.Bo..n-"""'--"'~=--':/t:--J/'-----------)
SYSTEM DESIGN
______ Septic Tank Capacity (gallon) ______ Other
______ Percolation Rate (minutes/inch) Number of Bedrooms (or other) ____ _
Required Absorption Area -See Attached
Special Setback Requirements:
Date _____________ Inspector ___________________________ _
FINAL SYSTEM INSPECTION AND APPROVAL (as installed)
Call for Inspection (24 hours notice) Before Covering Installation
System Installer ________________________________________ _
Septic Tank Capacity ______________________________________ _
Septic Tank Manufacturer or Trade Name--------------------------------
Septic Tank Access within 8" of surface --------------------------------
Absorption Area-----------------------------------------
Absorption Area Type and/or Manufacturer or Trade Name --------------------------
Adequate compliance with County and State regulations/requirements _____________________ _
Other----------------------------~---------------
L/-/3-0S-Inspector .?l1,otz1,.1 ~· ~ il...,.Jtop.$,.R Date
RETAIN WITH RECEIPT R;ORDS AT CONSTRJCTION SITEO
•CONDITIONS:
~. AU installation must comply with all requirements of the Colorado State Board of Health \ndividua' Sewage Disposal Systems Chapter
25, Article 10 C.R.S. 1973, Revised 1984.
2. This permit ts valid only for connection to structures which have fully complied with County zoning and building requirements. Con·
nection to or use with any dwelling or structures not approved by the Building and Zoning office shall automatically be a violation or a
requirement of the permit and cause for both legal action and revocation of the permit.
3. Any person who constructs, alters, or installs an individual sewage disposal system in a manner which involves a knowing and material
variation from the terms or specifications contained 1n the application of permit commits a Class I, Petty Offense ($500.00 fine -6
months in jail or both).
Whtte -APPLICANT Yellow -DEPARTMENT
•
IND MD UAL SEWAGE DISPOSAL SYSTEM APPLICATION
OWNER (\'\ARK <SouLJ>
ADDRESS oo'-t\ oA~ LA"e. . ~
CONTRACTOR ~o~· p Covi.~..\vut.:hpv\
ADDRESS °""&?x. l30 I G._LA.) S
PHONE 4JO-°!Lf~--z 3:?8
PERMITREQUESTFOR 04_ NEWINSTALLATION ( ) ALTERATION ( )REPAIR
Attach separate sheets or report showing entire area with respect to surrounding areas, topography of area, habitable
building, location of potable water wells, soil percolation test holes, soil profiles in test holes (See page 4).
LOCATION OF PROPOSED FACILITY:
NearwhatCityofTown G!£V\~ Sff i ~ SizeofLot 2.z.zq
Legal Description or Address L m ~ 2.. \ ~K ~h ~ I
WASTES TYPE: 04_ DWELLING 0d-6o ()a(< Ltt<<-( ) TRANSIENT USE
( ) COMMERCIAL OR INDUSTRIAL ( ) NON-DOMESTIC WASTES
()OTHER-DESCRIBE _______________ _
BUILDING OR SERVICE TYPE:_:Ree___._......_~.,.d,=&t:,.;""""',e...."""'------------------
Number ofBedrooms ___ ...._ ________ N.umber of Persons_~5)~---
0() Garbage Grinder t)<J Automatic Washer ~ Dishwasher
SOURCE AND TYPE OF WATER SUPPLY: ( ) WELL ( ) SPRING ( ) STREAM OR CREEK
If supplied by Community Water, give name of supplier: W~ W~'2:cJ(,
DISTANCE TO NEAREST COMMUNITY SEWER SYSTEM:~ro"~
Was an effort made to connect to the Community System? -...L.:::!.""--------------
A site plan is required to be submitted that indicates the following MINIMUM distances:
Leach Field to Well: 100 feet
Septic Tanlc to Well: 50 feet
Leach Field to Irrigation Ditches, Stream or Water Course: 50 feet
Septic System (septic tank & disposal field) to Property Lines: 10 feet
YOUR INDIVIDUAL SEWAGE DISPOSAL SYSTEM PERMIT WILL NOT BE ISSUED WITHOUT
A SITE PLAN.
GROUND CONDITIONS:
Depth to first Ground Water Table. __ 2"""-_.f«::-=~*'-------------------
Percent Ground Slope __ --'-"_J_J"'-----------------------
•
TYPE OF INDIVIDUAL SEWAGE DISPOSAL SYSTEM PROPOSED:
K> SEPTIC TANK ( ) ABRA TION PLANT ( ) VAULT
( ) VAULT PRIVY ( ) COMPOSTING TOILET ( ) RECYCLING, POTABLE USE
( ) PIT PRIVY ( ) INCINERATION TOILET ( ) RECYCLING, OTHER USE
( ) CHEMICAL TOILET( ) OTHER-DESCRIBE
FINAL DISPOSAL BY:
( ) ABSORPTION TRENCH, BED OR PIT ( ) EV APOTRANSPIRATION
( ) UNDERGROUND DISPERSAL ( ) SAND FILTER
( ) ABOVE GROUND DISPERSAL ( ) WASTEWATER POND
( ) OTHER-DESCRIBE :T2es~e& hy 'SoNs
WILL EFFLUENT BE DISCHARGED DIRECTLY INTO WATERS OF THE STATE? ND
PERCOLATION TEST RESULTS: (To be completed by Registered Professional Engineer, if the Engineer does the
Percolation Test)
Minutes er inch in hole No. 1 -----r Minutes er inch in hole No. 3 _____ _,.
Minutes er inch in hole No. 2 Minutes er inch in hole No . . _____ _,.
Name, address and telephone ofRPE who made soil absorption tests: -------------
Name, address and telephone ofRPE responsible for design of the system: $:,;>~;;.
&<~\e. C\Jo-704:-O?:>\\
Applicant acknowledges that the completeness of the application is conditional upon such further mandatory and
additional tests and reports as may be required by the local health department to be made and furnished by the applicant
or by the local health department for purposed of the evaluation of the application; and the issuance of the permit is
subject to such terms and conditions as deemed necessary to insure compliance with rules and regulations made,
information and reports submitted herewith and required to be submitted by the applicant are or will be represented to
be true and correct to the best of my knowledge and belief and are designed to be relied on by the local department of
health in evaluating the same for purposes of issuing the permit applied for herein. I further understand that any
falsification or misrepresentation may result in the denial of the application or revocation of any permit granted based
upon said application and in legal action for perjury as provided by law.
s-drw, J est. £2 n.re~3+=u.t-ot.f~-
PLEASEDRAW AN ACCURATE MAP TO YOUR PROPERTY!!
,. ' '
Garfield County Building Department
108 Eighth Street, Suite 201
Glenwood Springs, CO 81601
April 8, 2004 I
RE: Proposed clarification of Lot Number for the Gould Residence building permit application
plans and Reports, Lot 21, Westbank Ranch Subdivision,
Garfield County, CO
SE Job No. 23194.01
Dear Staff:
The recently submitted Site Plans and OWS report that were prepared for Mark Gould in support of the
building permit applications for Lot 21, Westbank Ranch Subdivision contain a clerical error associated
with the referenced Lot Number. The submitted documents by Sopris Engineering, LLC. include reference
of the subject site as Lot 20 rather than the correct reference that is Lot 21. Therefore all references to Lot
20 in the 4 plan sheets and the OWS Engineering Report by Sopris Engineering, LLC. shall hereby be
considered a reference to Lot 21, Westbank Ranch Subdivision.
If you have any question or need any additional information, please call.
Sincerely,
SOPRIS ENGINEERING, LLC #k/
Paul E. Rutledge
Design Engineer
Cc: Mark Gould
I 502 Main Street • Suite A3 •Carbondale, CO 81623 • (970) 704-0311 • Fax (970) 704-0313
SOPRIS ENGINEERING llC civil consultants
Mark Gould
Gould Construction
6874Hwy82
Glenwood Springs, CO 81601
RE: Proposed OWS System, Lot 20, Westbank Ranch Subdivision,
Garfield County, CO
SE Job No. 23194.01
Dear Mark:
March 18, 2004 I
Pursuant to your request, this letter/report presents our findings in regard to the feasibility and design for an
engineered Onsite Wastewater System (OWS). This design is based on our evaluation of the site
conditions with information provided by you for use in supporting your application to Garfield County.
Our recommendations are in accordance with Garfield County and the State of Colorado Regulations.
Garfield County must permit any proposed improvement to the site. We have reviewed the information
forwarded to us, conducted a site visit, formulated an OWS design and created a site plan with construction
details as part of our scope of work.
Conclusions
Based on our findings we believe that the design and installation of an approved OWS system is feasible in
accordance with the Regulations of Garfield County and the State of Colorado. We recommend that a
new 1500-gallon septic tank equipped with an approved wastewater secondary treatment unit installed with
the septic tank.. The treated effluent will discharge to an external pump basin to be equally distributed
across a 500 square foot soil dispersal field system. The soil dispersal system can be installed over natural
soils as delineated on the attached plan. The system will meet all required setbacks and be installed within
the general boundaries indicated on the plan. Our Design is outlined below and delineated on the attached
site plan.
Site Location
The subject site is located in the Westbank Subdivision at Lot 20, adjacent to the west bank of the
Colorado River. The site is situated in Section 35, T 7 S, R 89 W of the 61h P.M. The Site comprises
approximately 2 acres. The site is bounded on the south and west by adjacent single-family lots (6 & 4
respectively).
Existing Site Conditions
The site is located on previously undeveloped, irrigated agricultural lands. The site has an average
moderate slope (20%) toward the north toward the river with some flatter bench areas. The site has been
regraded and was previously covered with pasture grasses. Domestic water will be supplied by a central
water system. A relocated drainage ditch and easement runs across the mid section of the lot along the
northern building envelope line.
I 502 Main Street• Suite A3 •Carbondale, CO 81623 • (970) 704-0311• Fax (970) 704-0313
SOPRIS ENGINEERING LLC civil consultants
Proposed Site Conditions
Mark Gould
SE Job No. 23194.01
March 18, 2004
Page2
It is our understanding that you intend to construct two-story, 4-bedroom single-family home with a
detached garage. The proposed improvements will include a new OWS system with appropriate site
grading. The new structure is to be generally located as shown on the plan.
Subsurface Conditions
The subsoil encountered at the site generally consists of one to two feet of topsoil overlying sandy silt and
clay over sandy silt and gravels with cobbles and occasional boulders. The existing soils at the proposed
dispersal field grade will consist of typical river alluvium material with a percolation rate greater than 5
minutes per inch. The described soils are based on our knowledge of the general area, observations of
onsite excavations, and geotechnical evaluations performed in the area. Groundwater was observed at a
depth of 10-25 feet below the existing surface grades. We assume that groundwater in the dispersal field
area will generally be equal to the water level in the river.
Additional geotechnical evaluations will be performed during pre construction and during construction of
the system to provide recommendations for subsoil preparation, soil replacement as needed and placement
of imported fill materials.
The OWS is designed based on the utilization of imported sand filter material and recovery of the treated
effluent by percolation into the native soils.
Design Criteria
The proposed single family home contains 4 bedrooms. The design flow is calculated as follows:
Single family home -equivalent 4 bedroom population@ 2 person /bedroom = 8 persons.
From the Garfield County I. S. D. S. Regulation:
Max. Design flow (Qd) =#of people x (avg. flow) x 1.5 gal/person/day.
Gallons per day per person for the subject house = 75 gal/person/day
Assume 8 people daily population
Qd = 8*75*1.5* =900 gal/day
Septic Tank Design
Based on Design Flow Qd.
Qd = 900 gal/day
Volume (V) of tank= Design Flow * 1.25
(30 hour retention time)
V = 900 gal/day * 1.25 days = 1125 gallons
To provide for future changes in use of the facility and accommodation of the treatment unit
we recommend a minimum tank size of 1500 gallons.
Use one 1500-gallon, concrete, dual compartment septic tank.
Treatment System Criteria
Mark Gould
SE Job No. 23194.01
March 18, 2004
Page3
Design of the site's OWS is in accordance with EPA design recommendations and requirements for
secondary wastewater treatment. The Design includes the installation of an Orenco Systems, Inc.,
Advantex treatment system and a dispersal/infiltration field for the discharge and polishing of treated
effluent.
The engineered system shall be designed to service at least ( 4) bedrooms utilizing an advanced secondary
treatment system. The secondary treatment system is a recirculating pack bed filter. The system shall be
capable of producing effluent quality, which meets or exceeds the requirements of the US EPA for
secondary wastewater treatment (30mg/L BOD and 30 mg/L suspended solids). The dispersal field is sized
to adequately service ( 4) bedrooms. All OWS compouents shall be accessible from the surface to facilitate
system testing and maintenance. We recommend installing the Orenco Systems Advantex-AX-20 unit.
Treatment System Design
With respect to effluent quality, maintenance and operation requirements, a compact recirculating trickling
packed bed filter treatment system packaged in and on a new concrete septic tank is the preferred method
of treatment for the site conditions. The Orenco Systems Advantex-AX-20 is a "State of the Art" pre-
manufactured package system that provides economical, quiet, odor free operation that provides excellent
wastewater treatment, which exceeds the requirements of the EPA for secondary wastewater treatment.
Raw sewage inters a standard 2-compartment septic tank for conventional primary treatment. Clear zone
effluent is filtered and pumped to a distribution manifold in the Advantex filter pod via a pump/filter vault
assembly installed in the secondary septic tank compartment. Effluent percolates down through textile
media and is collected in the bottom of the filter pod. The vertical textile media provides approximately
40,000 SF of surface area for bio-mat attachment. The treated effluent is discharged out of the filter pod to
a recirculating splitter valve (RSV) that splits the flow between return flow back to the septic tank and flow
to the dispersal/absorption field. During periods of no sewage loading all of the discharge is returned to
the tank. The return flow is discharged back to the secondary compartment or if nitrogen removal is
desired the return flow is discharged back to the primary compartment. The Advantex recirculating pump
typically runs only 90 minutes per day. The Advantex AX-20 is designed to provide treatment resulting in
effluent water quality parameter levels of 15 mg/L BOD and 15 mg/L TSS based on typical residential
strength wastewater. Assuming an average BOD concentration of 150 mg/I the unit will remove 90% of
BOD and up to 85% total nitrogen removal. The Orenco Systems Advantex AX-20 is adequate to treat
wastewater from an equivalent 5-bedroom home utilizing a 1500-gallon septic tank.
Effluent Dispersal System Design
Treated effluent is discharged to the ground via a soil infiltration system allowing the infiltration of treated
effluent into the soil. The infiltration/dispersal field is sized adequately to maintain long-term acceptance
of the treated effluent into the ground. We do not anticipate that a conventional bio mat will form on the
bed surface. The bed will provide a means for achieving tertiary treatment (polishing). However for sizing
Mark Gould
SE Job No. 23194.01
March 18, 2004
Page4
the infiltration/dispersal system we are utilizing the guidelines approved by the State of Colorado for sizing
of an absorption field. A soil infiltration/dispersal bed system, utilizing gravelless chambers is
recommended. The chamber units may be installed in native soils. The State allows a maximum 40% area
reduction for the use of gravelless infiltration chambers in a bed configuration. Based on the hydraulic
loading rate of the receiving soils and the absence of a conventional bio-mat on the infiltrative surfaces in
the field we estimate that the long-term recovery rate of the daily peak loading will be less than 2 hours.
Soil Dispersal/Infiltration Field System Design
Calculate per LTAR method: Assume LTAR = 1.15gal/day/sq. ft. Based on imported filter sand over
alluvial sandy silt and gravels with cobbles.
A = _QQ_ = 900 = 782 sq. ft. Apply a 40% reduction for utilizing gravelless
LTAR 1.15 infiltration chambers.
Apply a 40% reduction for utilizing gravelless leaching chambers.
782 x 0.6 = 469 sq. ft.
Assume 15.5 square feet per chamber: 469 sq.ft. = 30 chambers Use 30 chambers
15.5 sq.ft/chambers
Use 4 70 sf of bed surface with gravelless chambers in 6 rows of 5 installed over 2 feet of filter sand over
native soils. Excavate or build a mounded dispersal field a minimum of 570 SF of to surface area to
accommodate the chambers. This design is conservative based on the estimated recovery rate and the high
quality of effiuent applied to the bed.
Effiuent Distribution System
The Advantex treatment system installed with the new septic tank will gravity discharge treated effiuent to
an external pump basin adjacent to the tank. A pressure distribution system will be utilized to transport
effiuent from the pump basin to the dispersal/infiltration field. An effiuent filter pump system vault will be
installed in the secondary compartment of the septic tank to circulate filtered effiuent through the packed
bed filter treatment media above the tank, which will greatly reduce the biological loading to the
infiltration field. An automatic recirculating splitter valve (RSV) operates per demand to allow treated
effiuent to be discharged to the pump basin. A dosing pump with a 1" pressure hose, valve discharge
assembly will discharge effiuent to a 1" header pipe at the head of the dispersal/infiltration bed field. The
effiuent will be equally distributed from the header pipe to individual 4" perforated distribution lateral
running the length of each chamber row in the bed. The l" header pipe will have a tee at the head of each
chamber row with reducers and bushings to connect to the 4" distribution laterals with the perforations
oriented downward. An inspection port should be installed on the top mid-point cut out on the end
chambers in each outer row and on alternate end chambers in the inner rows.
, .
Control Systems
Mark Gould
SE Job No. 23194.01
March 18, 2004
Page5
An Orenco Systems control box will control all functions and monitoring of the installed systems. The
controls will record all operational cycles and will make adjustments if necessary. Alarms for the
treatment system components in the septic tank will be recorded and reset through the control box. A
Vericomm Telemetry control will be installed with the control box to allow offsite monitoring, data
collection and remote operational setting control. The system is set up with a web-based technology for
use by authorized operators and/or maintenance providers.
ISTS Operation and Maintenance
All components of the engineered OWS shall be inspected on a regular basis and be properly maintained.
The system and responsibility for repair and maintenance of the system will remain with the Lot Owner.
The owner shall retain the services of qualified personnel to inspect the OWS and to perform all
maintenance and repairs necessary to ensure that the system is in good operating condition and is in
compliance with the manufacturers performance requirements. The operating components of the OWS
system will be inspected within 30 days of being placed into operation and thereafter every six months.
The OWS should require minimal maintenance. Several factors influencing the need for maintenance
include: actual wastewater flows versus design flows, the volume of kitchen/domestic waste (excluding
human waste and toilet paper), excessive household chemicals and other toxic liquids. The tank, dispersal
field and other applicable treatment system components should be visually inspected bi-annually for debris,
wear, damage, leaks, or other potential problems. In general, for a properly utilized system, septic tanks
should be pumped and inspected every 2 - 4 years. The effluent filters should be cleaned every six months
and at the time of pumping. Infiltration fields should be maintained with suitable cover and kept free of
root invasive plants. Positive surface drainage away from the infiltration field should be maintained.
Construction and Inspections
Prior to construction of the permitted system the engineer should be contacted by the contractor and owner
well in advance to provide adequate time to discuss the system components with the contractor, answer
questions, resolve any conflict issues and schedule inspection site visits based on construction progress.
County Regulations require that the Design Engineers of record perform site inspections of the permitted
system during construction and provide "As-Built" documentation of the installed system to the County
after construction is complete.
General Notes
1) All materials and installation practices shall conform to the Garfield County Individual Sewage
Disposal Regulation.
2) All sewer lines and distribution lines in the system shall be 4" Schedule 40 or SDR-35 PVC unless
specified otherwise on the plans.
• • •
3) Add a two-way clean out on the service line from the house.
Mark Gould
SE Job No. 23194.01
March 18, 2004
Page6
4) The system shall be plumbed to distribution effluent into the bed with equal distribution.
5) The contractor shall ensure that the concrete septic tank and sewer lines are watertight.
6) The dispersal field area must be protected to prevent damage from vehicular or livestock traffic and
must be crowned to divert drainage runoff away from the trenches to minimize surface infiltration.
7) The infiltration chambers shall be installed level in the bed. The top of the backfill over the chambers
shall be covered with filter fabric or other suitable pervious material to prevent the migration of fines
from the overlying topsoil layer.
8) The field must have a minimum cover of 12 inches. A final cover of topsoil suitable for vegetation, a
minimum 4" deep, shall be placed from the top of the pervious cover layer to the finished surface
grade.
9) The dispersal field must be sodded or covered with vegetative ground cover.
10) The treatment unit shall be installed by in accordance with the manufactures specifications and
installation guidelines by qualified personal.
Our design and recommendations are based upon data supplied to us by others. If subsurface or site
conditions are found to be different from those presented in this report, we should be notified to evaluate
the effect it may have on the proposed OWS. If the County Environmental Health Department requests
changes or modifications to this design, we should be contacted to evaluate the effect on the ISTS.
If you have any question or need any additional information, please call.
Sincerely,
SOPRIS ENGINEERING, LLC
;; •
Mark Gould
Gould Construction
6874Hwy82.
•
Glenwood Springs, CO 81601
April 13, 2005 j
RE: AS-BUILT OWS -Gould Residence, Lot 20, Westbank Ranch Subdivision, Garfield
County, CO
SE Job No. 23194.01
Dear Mark:
Pursuant to requirements, this letter provides documentation that the new Onsite Wastewater System
(OWS) recently installed at the above referenced site is in general compliance with the permitted design.
Sopris Engineering inspected the OWS components at various times during construction prior to final
backfill. The enhanced treatment absorption bed was constructed in general compliance with the permitted
design utilizing the Elgen In Drain system installed over 24" of filter sand overlying native silty sand and gravels. A
1500-gallon dual compartment septic tank was installed with an Orenco Systems, Inc. Bio-Tube duplex
dosing pump system installed in the secondary compartment of the septic tank. The system constructed on
site was designed and built to serve the needs of the 4-bedroom house. Sopris Engineering performed visits to
inspect and verify the material specifications and the distribution components associated with the enhanced
treatment absorption system and the duplex dosing pump system.
The In-Drain treatment System, the 1500-gallon dual compartment concrete septic tank and the pressure dosed
distribution system was installed in accordance with County and State Regulations; the design specifications
presented in the Sopris Engineering design drawing and report dated 2/17 /04. Access to the septic tank charnbers
and the duplex pump system is maintained with sealed concrete risers with lids installed at the finish surface grades.
A 18' x 33' enhanced treatment absorption field was constructed in the general location as shown on the plan and
was constructed as a bed type sand filter with 48 Eljen In-Drain units installed in 6 rows of 8 units per row that
provide a 594 sq. ft treatment/absorption area. The In-drain units were installed over the filter sand and suitable
sandy pit run type native material at an appropriate height above the seasonal high ground water level and the 100-
year flood plain. The exposed soils after grubbing were suitable and consistent across the field. The treatment bed
was installed level. The minimum setback distances have been maintained. Individual 4" perforated distribution
laterals were installed along the entire length of each In-Drain unit row. Inspection ports were installed on each end
of the distribution laterals in the bed. The average depth at the top of the sand from existing ground is
approximately 4 feet. The distribution piping and In-Drain units were covered with filter fabric and a minimum of
12 inches of additional filter sand backfill. The bed was backfilled to finish grades with native material graded and
shaped to provide surface drainage off the bed.
The effluent is pumped from the Bio Tube dosing pump assembly through a pressurized 1" transport pipe to a
l"pressurized manifold in the center of the field. The pressurized flow is distributed equally through 1" tees to 6
individual distribution lines installed along the entire length of the In-Drain unit rows. The pressure distribution
system has automatic controls and is installed for cold weather drain back to prevent freezing. The average 100-year
flood water level has been estimated to be at site elevation of 6972. The top of the sand layer and bottom of the
distribution layer, in the mounded bed is at an approximate elevation of 6975 approximately 3' above the average
100-year flood elevation and well above observed ground water levels
I 502 Main Street• Suite A3 •Carbondale, CO 81623 • (970) 704-0311 •Fax (970) 704-0313
SOPRIS ENGINEERING llC civil consultants
•
OWS Operation and Maintenance
Mark Gould
SE Job No. 23194.01
April 13, 2005
Page2
All components of the engineered OWS shall be inspected on a regular basis and be properly maintained.
The re establishment of vegetative cover over the field and responsibility for operation, inspection and
maintenance of the system will remain with the Lot Owner or the owners representative. The owner shall
periodically inspect the OWS and perform all maintenance and repairs as necessary to ensure that the
system is in good operating condition and performing as designed.
The OWS should require minimal maintenance. Several factors influencing the need for maintenance
include: actual wastewater flows versus design flows, the volume of kitchen/domestic waste (excluding
human waste and toilet paper), excessive household chemicals and other toxic liquids. The tank, sanitary
tees and effluent filter should be visually inspected bi-annually for clogging debris, damage, leaks, or other
potential problems. In general, for a properly utilized system, septic tanks should be pumped and inspected
every 2 - 4 years. The effluent filter should be cleaned every six months and at the time of pumping.
Absorption fields should be maintained with suitable vegetative cover and kept free of root invasive plants.
Positive surface drainage away from the absorption field should be maintained.
If you have any question or need any additional information, please call.
Sincerely,
SOPRIS ENGINEERING, LLC
11111
INSTALLED LOCAroN OF' PUMP CONTROL BOX
PRO'tf0£D UN£ OF SITF: DISCONNECT WITH
CONTROL BOX.
(lfJ.J U.:JUY.:10n.J. -&.V.::Jl'l'l'f...,,.., .. n'LJ nvu•"' • ••--··· -··· · ---· ,. --· ·--··· · -~·~u• n"'" 0011 V7051 Tl\f.lSNI ·g
i
)
I
f
I
100-'IR FLOOD EL CROSS S£C110N~
INSTALLED 48 El..EN IN DRAIN IJN/TS IN 6 ROWS OF
8. FOR A roTAL OF 1595 SQ. FT. OF TREAlMEHT
AREA. LOCA 110H OF BED MEETS ALL R£QIJIRED
SETBAO<' R£QIJ/REMENTS. THE SY51Df SHALL IS
BED FOR EQUAL DISTRIBUTION FROM A 1"
MANIFOl.D. TH£ IN-DRAIN UNITS ARE
INSTALLED A t.tJ£ O\£R 24" OF SAND.
T (TYP.)
990 ~ANSPORT UN£. AJ(fspf)R
- --1-------
VEGATATION---
TOPSOIL LA YER--~
MIN. 5•
AERATED SOIL ZONE---
FILL LA YER O,,__ __
NATIVE SOIL
FILTER FABRIC --
PERFORATED PVC --,
DISTRIBUTION PIPE
IN-DRAIN UNIT -~
STRAPPING --,
CUSPA TED PLASTIC CORE---
NON-WOVEN FILTER FABRl!7--,
24 • FILTER SAND
USE CLEAN CONCRETE
SAND
NATIVE SOIL--,
4•
t
I
6"
_J_
/NSTALLA TION NOTES
1. THE BED SHALL BE EXCAVATED LEVEL
INSTALL FILTER SAND AND HYDRO COMPACT.
REPLACE ANY UNSUITABLE SOIL OR BOULDERS
SAND.
2. THE WIDTH OF THE EXCAVATION SHALL BE
.3.
4.
5.
6.
7.
.B.
LIMITED TO PLACE THE IN-DRAIN UNITS AND
SAND. MAINTAIN 24" OF SAND BETWEEN ROWS
AND 6" AROUND PERIMETER OF IN-DRAIN UINTS.
BOTTOM OF THE TRENCH SHALL BE FREE OF
ORGANIC MATERIAL AND ROCKS OVER 2.5 INCHES
IN DIAMETER. THE BOTTOM OF THE TRENCH
SHALL BE SCARIFIED OR RAKED. REPLACE SOIL OR
ROCKS AS NEEDED.
THE IN-DRAIN UNITS SHALL BE INSTALLED
LEVEL END TO END WITH THE PAINTED STRIP
FACING UP.
INSTALL PERFORATED PIPE OVER THE TOP OF
THE IN-DRAIN UNITS ON CENTER AND SECURE
WITH ONE ELJEN CLAMP PER UNIT.
INSTALL FILTER FABRIC OVER PIPE AND TOP
OF IN-DRAINS AND DRAPE DOWN THE SIDES
TO THE TOP OF THE SAND LA YER. SECURE
FABRIC WITH CLEAN EXCAVATED FILL MATERIAL.
BACKFILL IN-DRAIN SYSTEM WITH SUITABLE
EXCAVATED FILL FREE OF ROCKS OVER 2.5
INCHES IN DIAMETER. A VOID EXCESSIVE
COMPACTION OF FILL A VOID COMPACTION
DAMAGE TO SYSTEM WITH EXCAVATION EQUIPMENT
FINISH GRADE TO PREVENT SURFACE
PONDING. REVEGATA TE WITH APPROPRIATE
GROUND COVER AND PROTECT FROM EROSION.
BED TN-DRAIN SYSTEM DISPERSAL./ABSORPTION /TREATMENT
N.~~ '
MIN
24•
6"
4 "PERFORATED
PVC (TYP)
1' 1'
24" (1YPE A)
FILTER FABRIC (1YP)
DO NOT BLOCK
HOLES IN PIPE
MIN
24" 6"
1.
2.
3.
4.
5.
6.
7.
8.
9.
OWS SYSTEM NOTES
ALL MATERIALS AND INSTALLATION SHALL CONFORM TO STATE AND
COUNTY INDIVIDUAL SEWAGE DISPOSAL SYSTEM (ISDS) REGULATIONS.
1.
IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO CONTACT ALL
UTILITY COMPANIES FOR FIELD LOCATIONS OF UTILITIES PRIOR TO
CONSTRUCTION AND EXCAVATION.
ALL SEWER LINES TO BE SDR-.35 OR SCHEDULE 40 P.V.C. PIPE UNLESS
NOTED OTHERWISE.
INSTALL A TWO-WAY CLEAN OUT ON THE SERVICE LINE FROM THE HOUSE.
THE SEPTIC TANK SHALL BE INSTALLED LEVEL ON COMPACTED EARTH. INSTALL
WATERTIGHT RISERS AS NECESSARY TO BRING ALL REQUIRED ACCESS
POINTS TO THE FINISHED SURFACE GRADE. PROVIDE BOUANCY COMPENSATION
IF GROUNDWATER LEVELS WILL RISE ABOVE THE BOTTOM OF THE TANK.
A SANITARY BAFFLE TEE IS REQUIRED ON THE SEPTIC TANK INLET AND OUTLET.
INSTALL THE INLET AND OUTLET TEES PLUMB AND IN A POSITION TO ALLOW
EASY INSPECTION AND MAINTAINANCE OF TANK FROM THE TANK RISERS.
WE RECOMMEND THE INSTALLATION OF A 4" EFFLUENT FILTER CONTAINED IN lHE
4• BAFFLE OUTLET TEE OF THE SEPTIC TANK. THE FILTER SHOULD BE
INSPECTED EVERY SIX MONTHS. THE EFFLUENT FILTER SHALL BE MAINTAINED
AND CLEANED WHEN THE TANK IS PERIOD/CALLY PUMPED OR AS NECCESSARY.
INSTALL A SUITABLE EXTENSION ON THE FILTER WITH A HANDLE TO BE WllHIN
6" BELOW THE ACCESS LID.
THE CONTRACTOR SHALL ENSURE THAT THE SEWER LINES, SEPTIC TANK AND
RISERS ARE WATERTIGHT. ALL PLUMBING FIXTURES AND OWS COMPONENTS
SHALL BE INSTALLED AND MAINTAINED TO AVOID SURFACE OR GROUNDWATER
FROM ENTERING THE SYSTEM AND TO PREVENT LEAKAGE FROM lHE SYSTEM.
IN-HOUSE PLUMBING FIXTURES SHALL BE MAINTAINED TO PREVENT EXCESS
WATER FROM ENTERING THE SEPTIC SYSTEM.
ALL INSTALLATION OF IN-DRAIN UNITS SHALL BE IN CONFORMANCE
WITH THE MANUFACTURES INSTALLATION INSTRUCTIONS.
DOSING AND DISTRIBUTION SYSTEM
AN ORENCO SYSTEMS BIOTUBE DUPLEX PUMP ASSEMBLY SHALL BE INSTALLED
IN THE SECONDARY CHAMBER IN THE 1,500 GALLON SEPTIC TANK.
2.
THE DUPLEX PUMP ASSEMBLY COMPONENTS SHALL INCLUDE THE BIO-TUBE
VAULT, A COLD WEATHER DRAW DOWN DUPLEX DISCHARGE PLUMBING
ASSEMBLY WITH FLEX HOSE, PIPE, AND AUTOMATIC CONTROLS WITH ALARMS
AS PACKAGE COMPONENTS IN THE PUMP VAULT ASSEMBLY. INSTALL
WATERTIGHT RISERS CENTERED OVER THE ACCESS PORTS TO EASILY INSPECT
3.
4.
AND MAINTAIN SYSTEM COMPONENTS FROM THE SURFACE. USE IN SULA 1£D
ACCESS LIDS.
ALL INSTALLATION OF PUMP SYSTEM COMPONENTS AND CONTROLS SHALL BE
PERFORMED BY SCG, INC. OR ANOTHER QUALIFIED INSTALLER. ALL PUMPING
SYSTEM COMPONENTS SHALL BE INSTALLED IN CONFORMANCE
WITH THE MANUFACTURES INSTALLATION INSTRUCTIONS.
INSTALLATION OF THE NEW RISERS, SHALL BE PERFORMED BY THE
CONTRACTOR OR BY ANOTHER QUALIFIED INSTALLER IN COORDINATION WITH
7HE CONTRACTOR. INSTALLATION OF 7HE ELECTRICAL LINES AND POWER
SUPPL y SHALL BE PERFORMED BY 7HE ELECTRIC/AN IN COORDINA noN WITH
7HE CONTRACTOR, SCG OR AN01HER QUALIFIED INSTALLER. INSTALLATION,
STARTUP AND TESTING OF 7HE BIOTUBE VAULT PUMP ASSEMBLY AND
CONTROLS SHALL BE PERFORMED BY SCG, OR AN01HER QUALIFIED INSTALLER.
IN COORDINATION W11H 7HE CONTRACTOR AND ELECTRICIAN.
INSTALLER SHALL INSTALL A 12" LAYER OF WASHED
MEDIUM TO COURSE CONCRETE SAND OR EQUIV.
SEE El.JEN IN-DRAIN DESIGN AND INSTALLATION MANUAL FOR DETAILS
TYPICAL CROSS SECTION
NOT TO SCALE
COORJJINATE INSTALLATION W / sec ENTERPRISES, INC.
P.O. BOX 913
SILT. CO 81652
OFFICE: 970-876-2057
FAX: 970-876-2360 ~-PVC Riser with Grommets•----
{bond to tank adapter with
recommended adhesive)
Slope Ground ,.-----Fiberglass Gasketed Lid with--,
Away from Riser -:..,F===~:;,,,,~----S~tirai,...nl~es;;is;:;S;--tR;ee;;;I ::B=ol=ts=:;:--,====='=="""r7 "--
;;: PVC Splice Box
Discharge Assembly
Flexible Hoses (2)
with Cord Grips "~~~~~~ Conduit to ---
Control Panel Effluent Discharge
Conduit Seal--~
>&N-4-1-----Level Control
Float Assembly
H-t-----Check Valve (optional)
-IH-t-----Vault Inlet Ports
1+-1------Flow Inducer (2)
'W--p..+.. ____ OSI Effluent Pump
,C~~~i--1-----Drain Port
N-----Filter Cartridge
L ___________ _J__L_ __________ ""i _____ Biotube• Pump Vault
Duplex Effiuent Pumping System -2nd Compartment Drawdown
I
\
I
..... 5. INSTALL ISOLATION BAU VALVES AND CHECK VALVES ON EACH PUMP
DISCHARGE LIN£. INSTALL QUICK DISCONNECT THREADED COUPLERS ON EACH
PUMP DISCHARGE LIN£. £XT£ND DISCHARGE LIN£ UP TO WITHIN 12" OF THE
ACCESS LID TO PROVIDE EASY ACCESS FOR MAINTENANCE OF TH£ PUMP.
6. A SINGLE 1" DISCHARGE PIP£ (TRANSPORT LIN£) INSTALLED FROM TH£ PUMP
BASIN RISER AT TH£ SEPTIC TANK TO TH£ DISTRIBUTION HEADERS SHAU BE
INSTALLED FROM A T££ CONNECTED TO EACH PUMP'S COLD WE"A THER
APPL/CATION DISCHARGE PLUMBING ASS£MBL Y. AFTER TH£ PR£SSURR DOSE
IS COMPLETED GRAVITY DRAINBACK OF EFFLUENT TO TH£ BASIN Will_ OCCUR
THROUGH TH£ 1/4" ORIFICES IN EACH PUMPS DISCHARGE PLUMBING
ASSEMBLY.
7. TH£ PUMP DISTRIBUTION TRANSPORT UN£ SHALL B£ INSTAL1-ED TO
DISCHARGE ffFLU£NT TO TH£ ABSORPTION FIELD THROUGH TH£ SOLID
H£AD£R PIP£ AND EXTENSIONS THAT CONNECT TO EACH 7 1/4" PERFORATED
PRESSURE DISTRIBUTION PIP£. TH£ PRESSURE LIN£ CONNECTION FITTING ON
H£AD£R PIP£ SHAU B£ AT A HIGH POINT TO ALLOW GRAVITY DRAINAGE
BACK TO TH£ PUMP BASIN. TH£ EFFLUENT FLOWS WILL SPLIT AT TH£ 1 1/4"
H£AD£R PIP£ UN£ AND FLOW THROUGH EACH DISTRIBUTION LIN£ EXTENSION
TO TH£ PERFORATED DISTRIBUTION LATERALS. TH£ INVERT OF TH£
PRESSURIZED TRANSPORT LIN£ FlmNG AT THE H£AD£R PIP£ SHALL B£ AT
LEAST 6" ABOVE TH£ INVERT OF TH£ P£RFORA TED DISTRIBUTION LINES.
8. TH£ DOSING VOLUME SHALL B£ 40-75 GALLONS PER DOSING CYCLE.
TH£ APPROX/MAT£ DRAIIDOWN IN TH£ SECONDARY TANK COMPARTMENT IS 6".
9.
9.
1.
INSTALL PUMPS ASS£MBLl£S, RISERS, ELECTRICAL SYSTEMS, FLOATS AND
DISCHARGE LIN£ PER MANUFACTURES INSTALLATION GUIDELINES. US£ AN
ORENGO SYSTEMS MODEL P.300511. TH£ SYSTEM SHAU B£ INSPECTED BY A
QUALIFIED T£CHNlnON £VERY SIX MONTHS.
AU INSTALLATION AND MAINTENANCE SHALL B£ PERFORMED BY A QUALIFIED
PERSON IN ACCORDANCE WITH TH£ INSTALLATION & MAINTENANCE GUIDELINES
FOR TH£ ORENGO SYSTEMS BIO-TUB£ VAULT PUMP ASS£MBL Y.
ELECTRICAL NOTES
AN ORENGO SYSTEMS PUMP CONTROL PANEL SHALL BE INSTALLED BY TH£
ELECTRICIAN IN COORDINATION WITH SCG, OR ANOTHER QUALIFIED INSTALLER.
TH£ POWE"R SUPPLY FOR TH£ PUMPS AND CONTROLS SHALL CONSIST OF (2)
20 AMP CIRCUITS FOR THE PUMPS AND (1) 10 AMP CIRCUIT FOR CONTROLS.
PROVIDE LINE OF SIT£ DISCONNECT WITH CONTROL BOX.
2. THE ELECTRICIAN SHALL INSTALL ELECTRICAL WIRES IN CONDUIT FROM THE
CONTROL PANEL TO THE PUMP ASS£MBL Y IN THE PUMP BASIN IN TH£ SEPTIC
TANK. INSTALL COLOR CODED WIRES PER CONTROL PANEL DIAGRAM. INSTALL
(4) 12 GAUGE WIRES FOR CONTROLS AND (6) 10 GAUGE WIRES FOR PUMPS
WITH CONDUIT SEAL NEAR RISER SPLICE BOX. ELECTRIAN TO COORDINATE: W/
SCG, OR ANOTHER QUALIFIED INSTAL1-ER.
OPRIS ENGINEERING, LU:.
CIVIL CONSULTANT.
502 MAIN STREET, SUITE A3
CARBONDALE, CO 81623
(970) 704-0311
~
NO. DATE
LOT 20,
REVISION BY
WESTBANK RANCH SUBDIVISION
GARFIELD COUNTY, CO
GOULD RESIDENCE
AS-BUILT ONSITE WAS'l'EWATER SYSTEM
PLAN AND DETAILS
DES. PER CK YTN FILE NO.
DR. PER DATE 4/15/04 28194.0f
SHEET 1
OF
GRAPHIC SCALE
( IN l'DT )
1 Inch -20 fl