HomeMy WebLinkAboutOWTS PlanEXISTING WELL LOCATED NORTHWEST'
OVER 100' FROM PROPOSED OWTS FIELD
EXISTING CHAMBER TRENCH 'iC BF ABaN➢ONM.E NT IN PLACE.
INSTALL4" RISER PIPE INSPECTION PORI EXTEND RISER W/ CAP
MIN. 1" ABOVE FINISH GRAM ( rYG EACH CHAMBER END CAP)
INSTALL CHAMBER ENDCAPS (TYP.)
4" PVC OfSFRIHUl1ON PIPES (TYR) "-
LO HIAD OF EACH TRENCH END CAP
ABSORPTION/I REATMEN I FIELD
USE 60 QUICK-4 CHAMBERS IN 6 TRENCHES WITH 10 CHAMBERS PER ROW FOR A
TOTAL ABSORPTION AREA OF 700 S.F. (OR ALTERNATIVE BIO-DIFFUSERS EQUIVALENT). _;
THE SYSTEM SHALL BE PLUMBED FOR EQUAL GRAVITY DISTRIBUTION. THE CHAMBERS '
SHALL BE INSTALLED ON LEVEL GRADE IN EACH TRENCH. THE BOTTOM OF EACH
TRENCH TO BE EXCAVATED TO A MAXIMUM AVERAGE DEPTH OF 36 INCHES BELOW
THE EXISTING SURFACE GRADES, WITHIN THE UPPER HORIZON OF THE NATIVE SILT I*'
LOAM SOILS & BACKFILLED WITH A MINIMUM 12-INCHES OF COVER OVER THE "•
CHAMBERS. THE FINISH GRADE ACROSS THE FIELD SHALL BE SLIGHTLY MOUNDED A
MINIMUM 3-INCHES ABOVE EXISTING ADJACENT GRADES
EXCAVATION DEPTH 2' MIN.-4' MAX. BELOW SURFACE
GRADE MINIMUM. 12" COVER OVER TOP OF CHAMBERS
FILL & GRADE HELD AREA APPROXIMATELY 3" ABOVE
EXISTING SURFACE GRADES
Weww. -
EXISTING CHAMBER TRENCH TO BE ABANDONMENT I'I n ALL
ABSORPTION/TREATMENT FIELD INSTALLATION NOTE:
1. THE BOTTOM OF EACH TRENCH TO BE EXCAVATED TO A MAXIMUM DEPTH OF
36-INCHES BELOW THE EXISTING SURFACE GRADES, WITHIN THE NATIVE SANDY SILT
LOAM SOILS. THE TRENCHES SHALL BE EXCAVATED TO THE SPECIFIED DEPTH WITH THE
BOTTOM ABSORPTIVE SURFACE SCARIFIED BY A FINAL PASS OF THE EXCAVATOR
BUCKET TEETH.
2. THE CHAMBERS SHALL BE INSTALLED ON LEVEL GRADE IN EACH TRENCH OVER THE
SCARIFIED SOIL. THE INSTALLED CHAMBERS & END CAPS SHALL BE COVERED WITH
NON -WOVEN FILTER FABRIC & BACKFILLED WITH A MINIMUM 12-INCHES OF COVER
OVER THE TOP OF THE CHAMBERS.
3. THE FINISH GRADE ACROSS THE FIELD SHALL BE SLIGHTLY MOUNDED ABOVE EXISTING
ADJACENT GRADES A MINIMUM 6-INCHES ALONG THE CENTER OF THE FIELD & A
MINIMUM 3-INCHES AROUND THE FEILD PERIMETER ABOVE EXISTING GRADES.
4. IF LARGE COBBLES OR BOULDERS ARE ENCOUNTERED IN ANY PORTION OF THE
EXCAVATIONS, OVER EXCAVATE AS NEEDED AND BACKFILL WITH ASTM-33 (CONCRETi
SAND) TO THE BOTTOM OF TRENCH ABSORPTIVE SURFACE GRADE.
5. INSTALL 4" PVC RISER PIPE INSPECTION PORT AT EACH CHAMBER END CAP. FOR
QUICK-4 CHAMBERS, INSTALL 4" PIPE RISER IN ONE OF THE PAIRED END CAP TOP
PENETRATION CUT OUTS OR FOR BIODIFFUSER INSTALL 4" PIPE RISER IN THE TOP
PENETRATION CUT OUT ON EACH END CHAMBER. EXTEND RISER W/ THREADED CAP
MIN. 12" ABOVE FINISH GRADE. INSTALL FITTING AND/OR SCREWS TO HOLD BOTTOM
OF RISER MIN. 9" ABOVE INFILTRATIVE SURFACE (TYP.EACH CHAMBER ROW END CAP)
6. ENGINEER TO INSPECT EXCAVATION AT TIME OF CONSTRUCTION TO VERIFY SOIL
CONDITIONS & LAYOUT OF TRENCHES. ALL WORK TO BE APPROVED BY THE ENGINEER
PRIOR TO BACKFILL OF TANK, PIPING AND CHAMBERS.
-GARAGE CHOP
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EXISTING PLASTIC SEPTIC TANK TO BE PUMPED & REMOVED OR
BREACHED, BACKFILLED FOR ABANDONMENT IN PLACE.
INSTALL 1500 GALLON 2-COMPARTMENT CONCRETE SEPTIC TANK <-
(USE VALLEY PRECAST ITEM # IM 1500-2CP) W/ SEALED RISERS AND ya,
LIDS INSTALLED AT THE FINISHED GRADE SURFACE. INSTALL INLET
SANITARY TEE AND OUTLET EFFLUENT FILTER SANITARY TEE. DEPTH
TO TOP OF TANK FROM PROPOSED GRADE IS APPROXIMATLEY 18".
T. ... ..,:a.....,,.:
EXISTING 4" CLEANOUT
PROPOSED 4" 2-WAY CLEANOUT
1.5'-2' BELOW EX GRADE±
RECOVER EXISTING 4" PVC SEWER PIPE, SEVER & CAP.
INSTALL 45' ELBOW & CLEANOUT FITTINGS W/ RISER & CAP
EXTEND NEW SEWER PIPE TO NEW TANK @ 2%.
USE SCHD-40 OR SDR-26
4" PVC SEWER PIPE @ 2%
USE SCHD-40 OR SDR-26
4" PVC EFFLUENT PIPE @ MIN. 1%,
USE SCHD-40 OR SDR-35
CONCRETE 7-PORT OUTLET DISTRIBUTION BOX
W/ BAFFLE INSTALLED LEVEL ON COMPACTED
BASE. INSTALL RISERS & LID TO SURFACE GRADE:
INSTALL 4" RISER PIPE INSPECTION PORT EXTENI
-% RISER W/ CAP MIN. 1" ABOVE FINISH GRADE (T,
EACH CHAMBER END CAP)
OBITS DESIGN PLAN
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• Nets CI644-06 Ice resilient connectors
• Wel end Outlet dwtifled obeys owe
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Buena Vista. Colorado
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Phone: 7193964764
Fa 719-395-3727
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CONNECT INDIVIDUAL 4" DISTRIBUTION PIPE
TO HEAD OF EACH CHAMBER TRENCH (TYPICAL EACH TRENCH).
INSTALL CONNECTION AS NEEDED FROM END OR SIDE INLET
PORT OF EACH INFILTRATOR CHAMBER END CAP.
CHAMBER END CAP
NATIVE, YARD OR LANDSCAPED SURFACE
6" MIN. �r!rAVaW EXCAVATED MATERIAL COMPACTED
TO 90% STANDARD PROCTOR
SUITABLE BACKFILL OR
4„ IF CLASS 6 ROAD BASE
COMPACTED SUBGRADE
TRENCH CROSS-SECTION FOR
SDR-35.26 OR SCHD-40 PIPES
N.T.S.
Design Calculations OWTS
The design flow is calculated as follows for the total waste flows of the from the existing single
family residence. The waste flow from the existing residence has been served by a OWTS
permitted at the time of building permit in 1995, under County ISDS permit No. 2324 to serve a
3-bedroom residence. This design is for the replacement of the older chamber trench system
that is currently compromised due to assumed partially clogged soils. The system is exhibiting
slower infiltrative capacity and reduced recovery, therefore in need of replacement. The existing
functioning poly septic tank has been pumped a few times in recent years and is equipped with
sanitary tees, however It is undersized for anticipated future usage. The existing system has a
limited design capacity.
The treatment capacity for the replacement system is designed for a minimum 5-bedroom
residence adequate for the existing 4-bedroom single family home that will provide additional
capacity for additional usage as needed.
From the Regulation 43 usage table :
Minimum population based on 2 person per bedroom for the first 3 bedrooms = 6 persons and
1 person per bedroom for each additional 2 bedrooms = 2 persons for a total of 8 persons.
Gallons per day per person =75 gal/person/day, No peaking factor
Max. Design flow (Qd)gallons/day = (# of people) x (avg. flow)gal/person/day.
Design flow Qd = 8*75=600 gpd
Septic Tank Design:
The septic tank capacity required for a minimum 48 hour retention time is calculated as follows:
V = 600 gal/day * 2 = 1,200 gallons. Use a 1,500 gallon, two compartment concrete septic tank
with an inlet sanitary tee and effluent filter outlet sanitary tee in the second chamber. Tank
shall be installed with sealed concrete risers and lids to the finish grade surface. Pump the
existing 1,000 gallon septic tank and remove or breach and back fill to abandon in place.
Sub Surface Conditions and Testing:
A subsurface soil investigation and site assessment was performed by Sopris Engineering in on
April 15, 2020. The soils in the proposed field envelope area were sampled and characterized by
application of the USDA visual/tactile soil texture method analysis. The soils below 6 inches of
topsoil consist of medium dense sandy silt loam soil with less than 2% scattered gravel or rock
content to 8 feet below the surface grades. The soils appear to be consistent across the site
from observations in the excavated profile pits.
The native soils sampled from 2-3 feet below the surface are characterized as a soil type 2
consisting of sandy silt loam texture with fine granular structure. This soil has an effective
loading rate for conventional soil treatment of 0.6 Gal/S.F./day for a level 1 conventional
treatment system. The equivalent percolation rate is assumed to be 20-30 minutes per inch. No
free water was encountered in excavations on site. Seasonal high Groundwater levels are
expected to be below 20 feet from the existing surface grades. The soils are suitable for a
shallow conventional shallow absorption field consisting of gravelless infiltration chamber units.
Treatment -Soil Treatment Unit/ Absorption System Design:
The treatment/absorption field is designed based on utilizing the effective Long Term
Acceptance Rate (LTAR) for the native soils and the application of appropriate loading factors
for a soil treatment unit system utilizing gravity distribution to gravelless chamber trenches. The
new treatment system and absorption field will consist of gravity distribution of septic tank
effluent via a distribution box to individual chamber trenches with treatment across the native
soil absorptive surface.
Long Term Acceptance Rate (LTAR)
Considering the application of the state regulation 43:
Receiving Wastewater Treatment Level 1; Soil type 2 loading rate for a silt loam is (0.6
gal./S.F./day).; Loading factors; (Table 10-2, Gravity application trenches = 1.0) and
(Table 10-3, gravelless chambers = 0.7)
A(sf) = Qd x L.F.1 x L.F.2 .: A = Area;
LTAR LTAR = 0.6 Gal/S.F./day for silt loam
Qd = flow (gal/day) = 450 gpd
L.F.1=1.0 Gravity Distribution
L.F.2=0.7 Chambers
A(sf) = 600 gpd x 1.0 x 0.7 = 700 S.F.
0.6 Gal/S.F./day
Number of Quick-4 Infiltrator chambers 4'x3'x12"chambers:
700 S.F = 58.3 chambers; Use 60 chambers
12 S.F./Chamber
Number of 5'x3' Bio-Diffuser chambers:
700 S.F = 47c chambers; Use 48 chambers
15 S.F./Chamber
Use 60 Quick-4 Infiltrator chambers in two trenches 42' long by 3' wide with 10 chambers units
per trench plus two end caps as delineated on the plan or equivalent Bio-Diffuser chamber
trenches. The septic tank effluent will be gravity distributed to the head of each chamber row
via individual distribution pipes from a distribution box.
4" SOLID PVC GRAVITY
DISTRIBUTION PIPES (TYP.)
TO ABSORPTION FEILD
BACKFILL WITH SCREENED
ONSITE SOILS FREE OF ROCKS IN EXCESS
OF 3" DIAMETER OR USE 3/4" TO 1.5'
SCREENED ROCK
FILTER FABRIC
BACKFILL LAYER NATURAL ONSITE
SOILS FREE OF ROCKS
SCARIFY/TILL BOTTOM SURFACE TO A DEPTH
DISTRIBUTION BOX LID
AT GROUND SURFACE
RISER SECTION
BAFFLE
4" DISTRIBUTION
GRAVITY LINE
FROMMSEPTIC TANK
)
NINVERT IN
8" AGREGATE BASE COURSE
COMPACTED SUBGRADE
DISTRIBUTION BOX DETAIL
N.T.S.
CROWN FIELD TRENCH TO
DIVERT SURFACE WATER
4" PVC INLET PORT
IN END CAP
6' MIN -••-1
12" 36"
NDLSTURBED EARTH SA WTY
SILT LOAM SOIL,
OF 3" AND PLACE MIN. 3" OF ASTM-33
SAND LEVELING COURSE. NOTE: ALL CHAMBERS IN EACH TRENCH MUST BE INSTALLED ON LEVEL
GRADE OVER 3" ASTM-33 FILTER SAND LEVELING COURSE.
MAXIMUM DEPTH OF TRENCHES NOT TO EXCEED 36" BELOW PROPOSED
SURFACE GRADES. INLET AND END CAPS ARE TO BE INSTALLED ON EACH
END CHAMBER ROW. IF EXCESSIVE LARGE COBBLES OR BOULDERS ARE
ENCOUNTERED IN ANY PART OF THE EXCAVATION, OVER EXCVATE AND
BACKFILL WITH SAND OR SUITABLE SCREENED NATIVE SOILS.
t
CHAMBER TRENCH CROSS SECTION DETAIL
N.T.S.
GENERAL NOTES:
1. THE OWTS AS SHOWN ON THE PLAN AND THE DETAILS WERE DESIGNED BY SOPRIS ENGINEERING
2. THE PROPOSED LOT CONDITIONS BY SOPRIS ENGINEERING AND OWNERS.
3. THE EXISITNG LOT CONDITIONS PER COUNTY GIS DATA BASE, AERIAL MAPPING, LIDAR
TOPOGRAPHY AND SURVEY INFORMATION BY DEMING LAND SURVEYING LLC
4. PRIMARY OWNER NAME & ADDRESS: LOCABEBREM FAMILY TRUST
6538 331 COUNTY RD
SILT CO 81652
5. LEGAL SUMMARY: A PARCEL IN SEC 10 & 11 T7S R92W 6TH PM
6. SITE ADDRESS: 6538 331 COUNTY RD, SILT, CO 81652
7. PARCEL NUMBER: 240111200206
8. GARFIELD COUNTY PERMIT#: ISSUED
PREVIOUS CURRENT OWTS PERMIT NUMBER 2324 ISSUED 3-20-95
9. CONTRACTOR: HEYL CONSTRUCTION
OWTS SYSTEM NOTES
1. ALL MATERIALS AND INSTALLATION SHALL CONFORM TO STATE AND COUNTY ONSITE
WASTEWATER TREATMENT SYSTEM (OWTS) REGULATIONS.
2. IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO CONTACT ALL UTILITY COMPANIES FOR
FIELD LOCATIONS OF UTILITIES PRIOR TO CONSTRUCTION AND EXCAVATION.
3. ALL SEWER LINES TO BE SDR-35 OR SCHEDULE 40 P.V.C. PIPE UNLESS NOTED OTHERWISE.
4. INSTALL A TWO-WAY CLEAN OUT ON THE SERVICE LINE FROM THE HOUSE AND AN
ADDITIONAL CLEANOUT WITHIN 100' SECTION OF EFFLUENT DISCHARGE PIPE .
5.
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. BACKFILL WITH SUITABLE NATIVE SOIL FREE OF BOULDER AND ROCK IN EXCESS OF 3"
DIAMETER.
6. 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
MAINTENANCE OF TANK FROM THE TANK RISERS.
7. INSTALL A 4" EFFLUENT FILTER ON THE 4" 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 PERIODICALLY PUMPED OR AS NECESSARY. INSTALL A
SUITABLE EXTENSION ON THE FILTER WITH A HANDLE TO BE WITHIN 6" BELOW THE ACCESS
LID.
8. THE CONTRACTOR SHALL ENSURE THAT THE SEWER LINES, SEPTIC TANK AND RISERS ARE
WATERTIGHT. ALL PLUMBING FIXTURES AND OBITS COMPONENTS SHALL BE INSTALLED AND
MAINTAINED TO AVOID SURFACE OR GROUNDWATER FROM ENTERING THE SYSTEM AND TO
PREVENT LEAKAGE FROM THE SYSTEM. IN-HOUSE PLUMBING FIXTURES SHALL BE
MAINTAINED TO PREVENT EXCESS WATER FROM ENTERING THE SEPTIC SYSTEM.
9. THE DIMENSIONS AND NOTES SHOWN ON THE PLAN INDICATE MINIMUM AREA, LENGTH,
WIDTHS AND SEPARATION DISTANCES FOR THE TRENCHES, BED OR MOUNDED ABSORPTION
FIELD.
10.
11.
12.
13.
14.
15.
16.
17.
18.
THE ABSORPTION TRENCHES SHALL BE EXCAVATED TO LEVEL GRADE IN NATIVE EARTH. THE
TRENCH BOTTOM AND SIDEWALLS SHALL BE SCARIFIED AND/OR RACKED IF SMEARING
OCCURS. IF EXCESSIVE LARGE COBBLES OR BOULDERS ARE ENCOUNTERED IN ANY PART OF
THE EXCAVATION OVER 6" FROM THE PROPOSED TRENCH BOTTOM SURFACE, OVER
EXCAVATE AND BACKFILL WITH SAND.
THE LEACHING CHAMBERS SHALL BE INSTALLED LEVEL WITH A MINIMUM COVER OF 10
INCHES NOT TO EXCEED 24 INCHES.
LEACHING CHAMBERS WILL BE PLACED IN THE EXCAVATION OVER THE NATIVE SOIL OR
SELECT SOIL REPLACEMENT OR ASTM-33 SAND LEVELING COURSE. END CAPS SHALL BE
INSTALLED ON THE END CHAMBERS IN EACH TRENCH.
VERTICAL INSPECTION PORTS SHALL BE INSTALLED FROM THE PRE MARKED HOLE ON THE
TOP OF EACH END CHAMBER CAP . (TYP. BOTH ENDS OF EACH ROW) THE PORTS MAY HAVE
THREADED CAPS AT GRADE.
THE CHAMBERS WILL BE BACKFILLED WITH EXCAVATED MATERIAL VOID OF ROCKS, THE
BACKFILL MATERIAL SHALL NOT EXCEED 2 1/2" DIAMETER AND SHALL BE PLACED TO AT
LEAST 6 INCHES ABOVE THE TOP OF THE CHAMBERS. THE TOP OF THE PLACED BACKFILL
SHALL BE COVERED WITH A LAYER OF FILTER FABRIC. A MINIMUM 4" DEPTH OF TOPSOIL IS
TO BE PLACED ABOVE THE BACKFILL TO THE SURFACE & RE VEGETATED.
INSTALLATION OF LEACHING CHAMBERS SHALL BE IN CONFORMANCE WITH THE
MANUFACTURES INSTALLATION INSTRUCTIONS.
THE ABSORPTION TRENCHES/BED OR MOUND MUST BE GENERALLY MARKED AT THE FOUR
CORNERS WITH INSPECTION PORTS AND/OR BURIED REBAR. THE FIELDS MUST BE PROTECTED
FROM VEHICULAR AND LIVESTOCK TRAFFIC.
THE ABSORPTION FIELD SURFACES MUST BE SLOPED OR SLIGHTLY MOUNDED TO DIVERT
SURFACE DRAINAGE AWAY FROM THE FIELD.
THE ENTIRE ABSORPTION FIELD SURFACE MUST BE RE VEGETATED.
19. THE ABSORPTION FIELD SHALL BE INSTALLED PER THE REQUIRED SETBACK DISTANCES: 10
feet from any property line.
25 feet from any potable water supply line.
20 feet from any occupied dwelling.
100 feet from any well, spring or cistern.
100 feet from any stream or water course.
DISTRIBUTION SYSTEM NOTES:
1. FILTERED EFFLUENT WILL DISCHARGE TO A CONCRETE DISTRIBUTION BOX WITH RISERS
AND LID AT THE SURFACE.
2. THE DISTRIBUTION SYSTEM WILL BE INSTALLED TO ALLOW FOR EFFLUENT TO BE EQUALLY
DISTRIBUTED TO THE ABSORPTION TRENCHES VIA INDIVIDUAL 4" DISTRIBUTION LINES
CONNECTED TO THE HEAD OF EACH CHAMBER TRENCH.
3. THE MINIMUM SLOPE OF THE DISCHARGE LINE FROM THE TANK TO THE DISTRIBUTION
BOX SHALL SHALL BE INSTALLED AT A MINIMUM 1% SLOPE. THE INDIVIDUAL
DISTRIBUTION LINES AT THE HEAD OF THE TRENCHES SHALL BE INSTALLED AT A MINIMUM
OF 2% SLOPE.
TESTING, INSPECTIONS AND CONSTRUCTION MANAGEMENT:
1. ADDITIONAL GEOTECHNICAL EVALUATIONS AND INSPECTIONS BY THE ENGINEER SHOULD BE
PERFORMED DURING INITIAL STAGES OF CONSTRUCTION TO VERIFY SOIL CONDITIONS AND
OWTS DESIGN. SUFFICIENT NOTICE TO THE ENGINEER BY THE PROJECT
MANAGER/CONTRACTOR NEEDS TO BE MADE IN ORDER TO SCHEDULE THE SITE
INSPECTIONS.
2. PRIOR TO CONSTRUCTION OF THE PERMITTED SYSTEM THE ENGINEER SHOULD BE
CONTACTED BY THE PROJECT MANAGER/CONTRACTOR 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.
3. 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. THE ENGINEER SHOULD BE CONTACTED AND NOTIFIED OF THE CONSTRUCTION
SCHEDULE.
4. OUR DESIGN AND RECOMMENDATIONS ARE BASED OUR SITE ASSESSMENT, SOIL
EVALUATION AND UPON INFORMATION SUPPLIED TO US BY OTHERS. IF SUBSURFACE OR
SITE CONDITIONS ARE FOUND TO BE DIFFERENT FROM CONDITIONS ASSUMED OR
INDICATED, WE SHOULD BE NOTIFIED TO EVALUATE ANY EFFECT ON THE PROPOSED OWTS.
IF THE COUNTY REQUESTS CHANGES OR MODIFICATIONS TO THIS DESIGN, WE SHOULD BE
CONTACTED TO EVALUATE AND RESPOND TO THE REQUEST.
5. CONTRACTOR SHOULD REVIEW ANY CONDITIONS ON THE ISSUED PERMIT AND COORDINATE
WITH THE ENGINEER REGARDING CONSTRUCTION OF THE SYSTEM.
6. IF YOU HAVE ANY QUESTION OR NEED ANY ADDITIONAL INFORMATION, PLEASE CALL PAUL
RUTLEDGE AT SOPRIS ENGINEERING, 704 0311.
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GARFIELD COUNTY, COLORADO
ONSITE WASTEWATER TREATMENT SYSTEM PLAN
OWTS PERMIT APPLICATION CONSTRUCTION DOCUMENT
DATE: 04 - 15 - 2020
JOB NO. 30060.01
PREVIOUS SURVEY PLAT
VINCINITY AERIAL MAP
G:\2020\30060\CIVIL\CIVIL DWGS\DE\30060-DE-SITE-OWTS DWG - Apr 15 2020 - 1.43pm
SHEET C-1