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OWTS DESIGN CALCULATIONS 2015:
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3 -BEDROOM RESIDENCE:
• (75 GAL/PERSON/DAY x 2 PERSONS/BEDROOM x 3 BEDROOM)
• DESIGN FLOW Q 450 GALLONS
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• (450) x 48/24 HOUR RETENTION TIME 900 GALLONS
• USE 1,500 -GALLON, TWO-COMPARTMENT TANK WITH DOSING PUMP.
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ABSORPTION AREA SIZING:\
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LTAR RATE = 0.30 GAL/SF (USDA SANDY CLAY WITH SAND FILTER
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• CALCULATED ABSORPTION AREA A=(Qd/LTAR)=(450/0.3)
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ABSORPTION AREA = 1500 SF
10% REDUCTION FOR DOSING
30% REDUCTION FOR CHAMBERS IN TRENCH
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TOTAL AREA REQUIRED FOR 3 BEDROOMS 945 SF
HANGING 2" PRESSURE PIPE IN ADS CHAMBERED TRENCH SYSTEM:
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• ABSORPTION AREA PER DESIGN 945 SF.
• EACH ADS CHAMBER ACCOUNTS FOR 15SF OF AREA.
63 CHAMBERS REQUIRED.
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4 ROWS OF CHAMBERS (16 CHAMBERS EACH) SPACED 6' APART
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CHAMBERS SET OVER 3' OF OWTS APPROVED SAND FILTER.
SITE CONSTRAINTS/SETBACKS:
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• WATER SUPPLY LINE LOCATION.
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• LOCATION OF HOUSE.�\`\
• TOP OF BANK LOCATION.
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1. ABSORPTION LATERALS SHALL NOT EXCEED 150 -FEET IN LENGTH BECAUSE OF PRESSURE DOSING.
2. THE BOTTOM OF EACH ABSORPTION TRENCH SHALL BE LEVEL.
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3. DRAINAGE SWALES ARE TO BE PROVIDED ABOVE AND AROUND TRENCHES, AS NECESSARY, TO PREVENT SURFACE RUNOFFI\
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4. TRENCH LATERALS SHALL FOLLOW CONTOURS IF POSSIBLE.
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INSTALL INFILTRATOR IN ACCORDANCE WITH MANUFACTURIER'S RECOMMENDATIONS.
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6. TRENCH BOTTOM AND SIDEWALLS MUST BE RAKED TO REMOVE SOIL SMEARS INCURRED DURING EXCAVATION.
7. NO EXCAVATION OF ABSORPTION FIELD IS TO BE DONE DURING WET WEATHER AND USE OF RUBBER TIRE VEHICLES OVER/
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ABSORPTION AREA IS PROHIBITED
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8. BOULDERS EXISTING WITHIN THE TRENCH SHALL BE EXCAVATED AND BACKFILL SHALL CONSIST OF ONSITE SELECTOR PIT -RUN
MATERIAL.
9. SUBMIT SHOP DRAWINGS FOR REVIEW PRIOR TO ORDERING SYSTEM PARTS.
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10. THE CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING THE LOCATIONS AND DEPTHS OF ALL EXISTING BURIED UTILITIES.
11. CLEAN OUTS ARE REQUIRED WITHIN 5 FEET OF THE HOUSE FOUNDATION, AT ALL BENDS AND A MAXIMUM OF 100 LF
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SEPARATION ALONG THE SEWER LINE RUN.
12. THE CONTRACTOR SHALL BE RESPONSIBLE FOR INSTALLING ALL WATERTIGHT COMPONENTS, PRIOR TO THE ABSORPTION
AREA, TO PREVENT INFILTRATION.
13. TOPSOIL COVER MAYBE VARIED (WITH 6" MINIMUM) TO ALLOW FOR NON -INTRUSIVE LANDSCAPING, MAXIMUM BURY
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DEPTH OF 4' IN DEPTH.
INSTALL RISERS AS NECESSARY TO BRING ALL ACCESS POINTS TO ONE-HALF FOOT ABOVE FINAL GRADE.
15. LOCATIONS OF ALL COMPONENTS MAYBE VARIED AS NECESSARY AS LONG AS ALL MINIMUM DISTANCES AND SLOPES MEET
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THOSE REQUIRED.
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16. THIS DRAWING DOES NOT CONSTITUTE AN OWTS PERMIT. PERMIT MUST BE OBTAINED FROM APPROPRIATE COUNTY
OFFICIALS. ENGINEER MUST OBSERVE CONSTRUCTED SYSTEM BEFORE BACKFILL AND PROVIDE REPORT TO COUNTY.
17. THIS SYSTEM IS SIZED FOR TYPICAL DOMESTIC WASTES ONLY. BACKWASH OR FLUSHING FLOWS FOR REVERSE OSMOSIS UNITS
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OR WATER SOFTENERS OR FILTERS SHOULD NOT BE INTRODUCED INTO THIS SYSTEM. GARBAGE DISPOSAL INSTALLATION AND
USE IS ALSO DISCOURAGED.
18. INSTALL BLUEBOARD INSULATION OVER SEWER PIPE WHEREVER DEPTH IS LESS THAN FROST DEPTH.\\\
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19. DUE TO THE ELEVATION OF GROUND WATER, THE SYSTEM MUST HAVE 3' OF CONCRETE SAND INSTALLED BELOW THE
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20. SITE PLAN INFORMATION, NUMBER OF BEDROOMS, SIZE OF HOUSE PROVIDED BY PROJECT ARCHITECT.
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21. LEACH FIELD MUST BE SURVEYED AFTER INSTALLATION FOR ACCURATE LOCATION FOR FINAL FIELD INSPECTION, AS -BUILTS
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22. NO IRRIGATION DITCH FACILITIES ARE TO BE CONSTRUCTED ON THE SITE. ONSITE LANDSCAPE IRRIGATION WILL NOT BE
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23. DOMESTIC WATER IS TO BE PROVIDED BY THE ONSITE WELL.
24. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE GARFIELD COUNTY REGULATIONS FOR ONSITE WASTEWATER
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TREATMENT SYSTEM DESIGNS. THE CONTRACTOR SHALL BE RESPONSIBLE FOR SUCH SPECIFIC DETAILS AS REFERRED TO IN THE
ABOVE MENTIONED REGULATIONS.
25. CONCRETE SEPTIC TANK SHALL COMPLY WITH THE STRUCTURAL DESIGN CRITERIA OF ASTM C1227-12 (STANDARD\\`
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SPECIFICATIONS FOR PRECAST SEPTIC TANKS).
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26. ALL NEW TANK INSTALLATIONS REQUIRED AN EFFLUENT FILTER TO BE PLACED DIRECTLY WITHIN THE OUTLET TEE. THE INLET
OF THE TEE MUST BE PLACED WITHIN THE CLEAN WATER ZONE IN THE TANK, BELOW THE SCUM LAYER AND ABOVE THE SLUDGE
LAYER. FILTER SHALL EXTEND INTO THE LIQUID A DISTANCE EQUAL TO APPROXIMATELY 40% OF THE LIQUID DEPTH POTENTIAL
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GRAPHIC SCALE
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OWTS DESIGN CALCULATIONS 2015:
3-BEDROOM RESIDENCE:
• (75 GAL/PERSON/DAY x 2 PERSONS/BEDROOM x 3 BEDROOM
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• DESIGN FLOW = Q = 450 GALLONS
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TANK SIZING:
1500 GALLON TANK
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• (450) x 48/24 HOUR RETENTION TIME - 900 GALLONS
• USE 1,500-GALLON, TWO-COMPARTMENT TANK WITH DOSING PUMP.
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ABSORPTION AREA SIZING:3.
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• LTAR RATE = 0.30 GAL/SF USDA SANDY CLAY WITH SAND FILTER
TRENCH AND DOSING REDUCTIONS)13
ABSORPTION A=(Qd/LTAR)=(450/0.3)
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• CALCULATED AREA =
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•• ABSORPTION AREA = 1500 SF
•• 10% REDUCTION FOR DOSING
30% REDUCTION FOR CHAMBERS IN TRENCH
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TOTAL AREA REQUIRED FOR 3 BEDROOMS = 945 SF
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HANGING 2 PRESSURE PIPE IN ADS CHAMBERED TRENCH SYSTEM.
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• ABSORPTION AREA PER DESIGN 945 SF.
• EACH ADS CHAMBER ACCOUNTS FOR 15SF OF AREA.
•• 63 CHAMBERS REQUIRED.
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•• 4 ROWS OF CHAMBERS (16 CHAMBERS EACH) SPACED 6 APART
FOR REQUIRED AREA.
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•• CHAMBERS SET OVER 3 OF OWTS APPROVED SAND FILTER.
SITE CONSTRAINTS/SETBACKS:
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• LOCATION OF HOUSE.
• TOP OF BANK LOCATION.
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1. ABSORPTION LATERALS SHALL NOT EXCEED 150-FEET IN LENGTH BECAUSE OF PRESSURE DOSING.
2. THE BOTTOM OF EACH ABSORPTION TRENCH SHALL BE LEVEL.
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3. DRAINAGE SWALES ARE TO BE PROVIDED ABOVE AND AROUND TRENCHES, AS NECESSARY, TO PREVENT SURFACE RUNOFF
FROM ENTERING ABSORPTION AREA.
4. TRENCH LATERALS SHALL FOLLOW CONTOURS IF POSSIBLE.
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5. INSTALL INFILTRATOR IN ACCORDANCE WITH MANUFACTURERS RECOMMENDATIONS.
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6. TRENCH BOTTOM AND SIDEWALLS MUST BE RAKED TO REMOVE SOIL SMEARS INCURRED DURING EXCAVATION.
7. NO EXCAVATION OF ABSORPTION FIELD IS TO BE DONE DURING WET WEATHER AND USE OF RUBBER TIRE VEHICLES OVER
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ABSORPTION AREA IS PROHIBITED
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8. BOULDERS EXISTING WITHIN THE TRENCH SHALL BE EXCAVATED AND BACKFILL SHALL CONSIST OF ONSITE SELECT OR PIT-RUN
MATERIAL.
9. SUBMIT SHOP DRAWINGS FOR REVIEW PRIOR TO ORDERING SYSTEM PARTS.
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10. THE CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING THE LOCATIONS AND DEPTHS OF ALL EXISTING BURIED UTILITIES.
11. CLEAN OUTS ARE REQUIRED WITHIN 5 FEET OF THE HOUSE FOUNDATION AT ALL BENDS AND A MAXIMUM OF 100 LF
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SEPARATION ALONG THE SEWER LINE RUN.
12. THE CONTRACTOR SHALL BE RESPONSIBLE FOR INSTALLING ALL WATERTIGHT COMPONENTS, PRIOR TO THE ABSORPTION
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AREA TO PREVENT INFILTRATION.
13. TOPSOIL COVER MAYBE VARIED (WITH 6" MINIMUM) TO ALLOW FOR NON-INTRUSIVE LANDSCAPING, MAXIMUM BURY
DEPTH OF 4' IN DEPTH.
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14. INSTALL RISERS AS NECESSARY TO BRING ALL ACCESS POINTS TO ONE-HALF FOOT ABOVE FINAL GRADE.
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15. LOCATIONS OF ALL COMPONENTS MAYBE VARIED AS NECESSARY AS LONG AS ALL MINIMUM DISTANCES AND SLOPES MEET
THOSE REQUIRED.
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16. THIS DRAWING DOES NOT CONSTITUTE AN OWTS PERMIT. PERMIT MUST BE OBTAINED FROM APPROPRIATE COUNTY
OFFICIALS. ENGINEER MUST OBSERVE CONSTRUCTED SYSTEM BEFORE BACKFILL AND PROVIDE REPORT TO COUNTY.
17. THIS SYSTEM IS SIZED FOR TYPICAL DOMESTIC WASTES ONLY. BACKWASH OR FLUSHING FLOWS FOR REVERSE OSMOSIS UNITS
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OR WATER SOFTENERS OR FILTERS SHOULD NOT BE INTRODUCED INTO THIS SYSTEM. GARBAGE DISPOSAL INSTALLATION AND
USE IS ALSO DISCOURAGED.
18. INSTALL BLUEBOARD INSULATION OVER SEWER PIPE WHEREVER DEPTH IS LESS THAN FROST DEPTH.
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19. DUE TO THE ELEVATION OF GROUND WATER, THE SYSTEM MUST HAVE 3' OF CONCRETE SAND INSTALLED BELOW THE
CHAMBERS TO PROMOTE THE FILTERING PROCESS AND SLOW PERCOLATION.
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20. SITE PLAN INFORMATION, NUMBER OF BEDROOMS, SIZE OF HOUSE PROVIDED BY PROJECT ARCHITECT.
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21. LEACH FIELD MUST BE SURVEYED AFTER INSTALLATION FOR ACCURATE LOCATION FOR FINAL FIELD INSPECTION, AS BUILTS
AND WRITE -OFF.
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22. NO IRRIGATION DITCH FACILITIES ARE TO BE CONSTRUCTED ON THE SITE. ONSITE LANDSCAPE IRRIGATION WILL NOT BE
APPLIED TO THE OWTS SYSTEM AREA EXCEPTING TEMPORARY FACILITIES TO ENCOURAGE GRASS GROWTH FOR THE FIRST YEAR.
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23. DOMESTIC WATER IS TO BE PROVIDED BY THE ONSITE WELL.
24. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE GARFIELD COUNTY REGULATIONS FOR ONSITE WASTEWATER
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TREATMENT SYSTEM DESIGNS. THE CONTRACTOR SHALL BE RESPONSIBLE FOR SUCH SPECIFIC DETAILS AS REFERRED TO IN THE
ABOVE MENTIONED REGULATIONS.
25. CONCRETE SEPTIC TANK SHALL COMPLY WITH THE STRUCTURAL DESIGN CRITERIA OF ASTM C1227-12 (STANDARD
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SPECIFICATIONS FOR PRECAST SEPTIC TANKS).
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26. ALL NEW TANK INSTALLATIONS REQUIRED AN EFFLUENT FILTER TO BE PLACED DIRECTLY WITHIN THE OUTLET TEE. THE INLET
OF THE TEE MUST PLACED WITHIN THE CLEAN WATER ZONE IN THE TANK, BELOW THE SCUM LAYER AND ABOVE THE SLUDGE
LA
LAYER. FILTER SHALL L EXTEND INTO THE LIQUID A DISTANCE EQUAL TO APPROXIMATELY 40% OF THE LIQUID DEPTH POTENTIAL
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PROJECT NO.
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2141753
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REMOVABLE PVC CAP
DRILL 4 - 1/2"0 AIR HOLES
TOP OF MOUND IN EXPOSED PIPE
1' MIN. ABOVE O
INFILTRATOR SOLD PIPE AT END CAP—INSTALL VERTIOF INIFILTRATOR UNITS.
,COMPACTED ONSITE
BACKFILL MATERIAL
COUPLING
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ADS INFILTRATOR
-C, emi
UNIT & END CAP
APP. 1' INTO EG.
EXISTING GROUND
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NATURAL
GROUND
COMPACTED ONSITE/
/ BACKFILL MATERIAL
ADS INFILTRATOR
t : ' UNIT & END CAP.
BOTTOM INFILTRATOR:
" 0 PERFORATED PIPE
-RAKE SIDES OF SAND
TRENCH.
BOTTOM SAND
3' OF CONCRETE SAND
FOR INFILTRATION UNDER
CHAMBERS PER CODE.
INSPECTION WELL DETAIL
AT MOUND SYSTEM
N.T.S.
NOTES:
1. CONCRETE TANK MUST MEET ASTM C1227-12 STANDARDS.
2. ADDITION OF A CHARCOAL FILTER VENT LINE FROM TANK CHAMBERS WILL PROLONG THE LIFE OF THE TANK CONCRETE, NOT REQUIRED.
3. EFFLUENT FILTER REQUIRED ON OUTLET OF TANK.
1500 Gallon Top Seam
Item # Two Compartment
150OT-2CP-HH With High Head Pump
DESIGN NOTES
• Design per performance test per ASTM
C1227
• Top surface area 62.33 ft'
• rc 0 29 dogs; concrete - 6,000 PSI
Min.
In st all a t Ion:
• Tank to be set on 5• min. acrid bed or
pea grovel
• Tank to be backfIled anlfarmlY on ell
sides In Ilfts less than 24" and
mechanically compacted
■ Excavated material may be used for
backfill, provided large stones are
removed
• EKcovation should be dewatered and
tank filled with water prior to being put
In service for instollatlon with water
table less than 2' below grade
• Meets C1544-06 for resilient connectors
• Inlet and Cutlet identified above pipe
• Delivered complete with Internal plpfng
• PVC risers available
• Secondary safety screen ovanoble with
PVC riser
�• � 20' Clear Aaoeee
f�
TA �
1 w L VT.
Top 24,. M nimt rr
VkW Height
Ick D4COrRIpCt
ell Valve
ALLOWABLE BURY
(Based on water Table)
WATER TABLE ALLOWABLE
EARTH FILL
0'-0" 3• — 0•
1' —0" 3'-0'
47
Spring,
Potable
Section
Property
3 s^ 111 11
3. _ 0.. 4. _ 0.
Dry
View
Tse &W knpmmelr�
to field
Well,
aa'•
CRY
Lines,
1a•
quality
Gufch,
Tank
J
Suction
a Ealsleat pAV syvbrn to rrolnt kr on
Supply Building
Piped or
the marloet
Course,
Cut
a Complete in"lation (wild rho, Par*
W
Line
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• Complete
Digging Specs Invert
Dimensions Net
Capacity
Net Weight
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SERVICES FOR THIS PROJECT. NOR HAS ADS INDEPENDENTLY VEMFIED THE INFORMATION SUPPLIED. THE NSTALLATION DETAILS
AM 36 C13At®EE & EiTI MATES
Lateral,
13' Lang x 8' Wide Inlet Outlet
Length Width Height Inlet Side
Outlet Total
Lid
Tank
Total
'55" below inlet 55" 73"
132" 65" 92^ 1002 gal
507 gal 1509 gal 35go The 11180 lbs
149BO The
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TYPICAL 1500 GALLON TWO
COMPARTMENT SEPTIC TANK
WITH LOW HEAD DOSING PUMP
UTILIZE UPPER MANIFOLD
PORTS FOR PIPE ATTACHMENTS,
2" DISTRIBUTION PIPE
TO BE HUNG FROM TOP OF
INFILTRATOR WITH "' HOLES AT
4' CENTERS ON EITHER SIDE
TOP OF MOUND OF PIPE.
12" MIN. COVER
48" MAX. COVER
TOP SOILS AND
NATURAL BACKFILL
OVER TRENCHES
---,--BOTTOM INFILTRATOR:
COMPACTED ONSITE /
BACKFILL MATERIAL COMPACTED ONSITE
/BACKFILL MATERIAL
- ;
• I
ADS INFILTRATOR
UNIT & END CAP
36"
A.
APP. 1' INTO EG. ^:
EXISTING GROUND
III III III III IIIIII I - RAKE SIDES OF SAND
I I I I I I I I I I I I I I I I I I I I I I I S TRENCH.
BOTTOM SAND
NATURAL 3' OF CONCRETE SAND
GROUND FOR INFILTRATION UNDER
CHAMBERS PER CODE.
TRENCH CROSS SECTION
AT MOUND SYSTEM (TVP.
N.T.S.
ADS CHAMBER DETAIL
Table 7-1 Minimum Horizontal Distances in Feet Between Cumponents of an On -Site Wastewater Treatment System Installed After
November 15. 1973 atnd Water. Phvsical and Health Imnact Features
Spring,
Potable
Potable Dwelling
Property
3 s^ 111 11
Lake,
Dry
Septic
0-0I_—W2
Well,
aa'•
Water Occupied
Lines,
1a•
Water
Gufch,
Tank
J
Suction
END CAP END CAP END CAP
Supply Building
Piped or
FRONT VIEW SIDE VIEW REAF1 TOP VIEW
Course,
Cut
•2007 ADR. IHC_ REV. DESCRFnCN BY I FM1D0l1`Y CHIS'I
W
Line
ADVANCED DRAINAGE SYSTEMS. INC. ("ADS-) HAS PREPARED THIS DETAIL 94S0 ON INFORMATION PRDNDED TO ADS. THIS
Clsiem
ETC
Irrigation
Irrigation
DH?AWING IS INTENDED TO DEPICT THE COMPONENTS AS REGU=D. ADS HAS NOT PERFORMED ANY ENGINEERING OR DESIGN
5.1537
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SERVICES FOR THIS PROJECT. NOR HAS ADS INDEPENDENTLY VEMFIED THE INFORMATION SUPPLIED. THE NSTALLATION DETAILS
AM 36 C13At®EE & EiTI MATES
Lateral,
Ditch,
Area
PROVIDED HEREIN ARE GENERAL RECOMMENDATIONS AND ARE NOT SPECIFIC FOR THIS PROJECT. THE DESIGN ENGINEER SHALL
U
0
x
REVIEW THESE DETAILS PRIOR TO CONSFRUCTIDN. IT IS THE DESIGN ENGINEERS RESPDNSIRILFfY TO ENSURE THE DETAILS
Drywall,
Stream,
(from
PROVIDED HEREIN MEETS OR EXCEEDS THE APPLICABLE NATIONAL, STATE, OR LOCAL REQUIREMENTS AND TO ENSURE THAT THE
N78
DRAWING NUMBER STD -903
DETAJLS PROVIDED HEREIN ARE ACCEPTABLE FOR THIS PROJECT.
1 OF 1
Crest)
ADS CHAMBER DETAIL
Table 7-1 Minimum Horizontal Distances in Feet Between Cumponents of an On -Site Wastewater Treatment System Installed After
November 15. 1973 atnd Water. Phvsical and Health Imnact Features
Vault Priv 50 101 25 15 10 14 25 117 --
Slit Trench Latrine, Pit P6VY 4 100 502 25 NIA 25 25 100 25 NIA
System Not Relying on STA for 100-3 102 50 125 10 0 253 10 10
Treatment and Utilizing Aerosol
Methods
NOTE: The minimum distanc es shown above must be maintained between the OWTS components and the features described. Where soil, geological or other conditions warrant,
greater distan08s may be required by the beat board of health or by the Water Qu&I ty Control Commission pursuant to section 25-8-206, C.R.S. and applicabb regulatlons. For repair
or upgrading of existing DWTS where the size of lot precludes adherence to these distances, a repaired OWTS shall not be loser to setback Features than the existing OVVTS, as
reviewed and approved by the local public health agency, Components that are not watertight should not extend into areas of the roDt system of nearby trees -
1 Includes 1nfiltratiion gallerias permitted as wells by the Divislon of Water RAesouroe &
2 Crossings or encroschmants may be permitted at the points as noted above provided that the water In wastewater conveyance pipe is on me ad for the minimum Setback
distance an each side of the crossing. A length of pipe shall be used with a minimum Schedule 40 rating of aufflclent diameter to easily slide ober and rorapletely encase the
conveyance. Rigid end caps of at least Schedule 40 rating must be glued or secured ih a watertight fashion to the ends of the encasement pipe. A held of sufrfcient size to
aceomrnedate the pipe shall be drilled in the lowest section of the rigid rep so that the Don veyance pipe rests on the bottom oftha encasement pipe. The area in which the pipe
passes through the end caps shall be sealed with an approved underground sealant compatible with the piping used.
3 Add eight feet additional distance for each 100 grill ons per day or design noes between 1,000 and 2.000 gallons per day, unless it can be demonstrated by a professional
engineer or geologist by a hydrologic analysts a the use of a barrier, consisting of a minimum 311 mil PVC liner or equivslent, that Contamination w111 be minimized. if efltuent meets
Treatment Level 3N and the Inca public health agency hes a maintenance oversight program in accordance with section 14.6. ofthis reg ulatlan, the distance addition is not required.
Flows equal to or greater than 8,000 gallons per day must be hydrological analyzed fnrflow, velocity, hydraulic ;head, and other pertinent charecteristles as means of estimating
distances required to minimize contamination as part of the Dhlis[on site appircalti0n process.
4 New installations for pit privy and alit trenches not allowed.
FLUSHING DETAIL
7" DIA VALVE BOK
WITH SECURED LID
1.5" PVC SLIP X MALE
PIPE THREAD
ADAPTOR 1W/CAP
1,5'• DIA BALL
VALVE
1,5" DIA PVC LONG
SWEEP 90^ BEND
IN-SITU SOIL
STATE SETBACK GUIDELINES
REMOVABLE PVC CAP—
INSTALL MARKER IF CAP
IS TO BE BURIED.
FINISH GRADE-\
4" COU
4" 45• SWEEP
4" SEWER
4 n
h -r A -r
P VC WYE
SEWER CLEAN OUT DETAIL
N.T.S.
3ER
CLEAN OUT
ASSEMBLY
fY
W
Spring,
Potable
Potable Dwelling
Property
Subsurface
Lake,
Dry
Septic
0-0I_—W2
Well,
Water
Water Occupied
Lines,
Drain,
Water
Gufch,
Tank
J
Suction
Supply
Supply Building
Piped or
Intermittent
Course,
Cut
Z
w
W
Line
Eine
Clsiem
Lined
Irrigation
Irrigation
Bank, Fill
ZZ
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Irrigation
Lateral,
Ditch,
Area
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x
Ditch
Drywall,
Stream,
(from
I�
Z
Stormwater
Wetland
Crest)
Infiltration
Structure
Septic Tank, Higher Level
50
102
25
5
10
10
50
10
_
Treatment Unit, Dosing Tank.
Vaulti
Suiklin Sewer or Effluent Lines
602
10?
252
0
101
102
502
102
_
5
STA Trench, STA Bed. Unlined
10103
X52
25
20
10
25
503
26
Sand Filter, Sub -surface
Dispersal System, Seepage Pit
10
10
25
10
5
Lined Sand Filter
60
102
25
1 15
Lined Evapotranspiration Field or
60
102
25
15
10
10
25
10
5
Outside of Berm of Lined
Wastewater Pond
15
10
25
25
166
10
LlIn net Sand Filter in Soil Vlfith a
104
252
25
Percolation Rate Slower then 60
Minutes per Inch, Unlined or
Partially Lined Evapotrans-
piration System, Outside of Berm
of Unlined Wastewater Pond, or
System Not Relying on STA for
Treatment Other than Aerosol
Vault Priv 50 101 25 15 10 14 25 117 --
Slit Trench Latrine, Pit P6VY 4 100 502 25 NIA 25 25 100 25 NIA
System Not Relying on STA for 100-3 102 50 125 10 0 253 10 10
Treatment and Utilizing Aerosol
Methods
NOTE: The minimum distanc es shown above must be maintained between the OWTS components and the features described. Where soil, geological or other conditions warrant,
greater distan08s may be required by the beat board of health or by the Water Qu&I ty Control Commission pursuant to section 25-8-206, C.R.S. and applicabb regulatlons. For repair
or upgrading of existing DWTS where the size of lot precludes adherence to these distances, a repaired OWTS shall not be loser to setback Features than the existing OVVTS, as
reviewed and approved by the local public health agency, Components that are not watertight should not extend into areas of the roDt system of nearby trees -
1 Includes 1nfiltratiion gallerias permitted as wells by the Divislon of Water RAesouroe &
2 Crossings or encroschmants may be permitted at the points as noted above provided that the water In wastewater conveyance pipe is on me ad for the minimum Setback
distance an each side of the crossing. A length of pipe shall be used with a minimum Schedule 40 rating of aufflclent diameter to easily slide ober and rorapletely encase the
conveyance. Rigid end caps of at least Schedule 40 rating must be glued or secured ih a watertight fashion to the ends of the encasement pipe. A held of sufrfcient size to
aceomrnedate the pipe shall be drilled in the lowest section of the rigid rep so that the Don veyance pipe rests on the bottom oftha encasement pipe. The area in which the pipe
passes through the end caps shall be sealed with an approved underground sealant compatible with the piping used.
3 Add eight feet additional distance for each 100 grill ons per day or design noes between 1,000 and 2.000 gallons per day, unless it can be demonstrated by a professional
engineer or geologist by a hydrologic analysts a the use of a barrier, consisting of a minimum 311 mil PVC liner or equivslent, that Contamination w111 be minimized. if efltuent meets
Treatment Level 3N and the Inca public health agency hes a maintenance oversight program in accordance with section 14.6. ofthis reg ulatlan, the distance addition is not required.
Flows equal to or greater than 8,000 gallons per day must be hydrological analyzed fnrflow, velocity, hydraulic ;head, and other pertinent charecteristles as means of estimating
distances required to minimize contamination as part of the Dhlis[on site appircalti0n process.
4 New installations for pit privy and alit trenches not allowed.
FLUSHING DETAIL
7" DIA VALVE BOK
WITH SECURED LID
1.5" PVC SLIP X MALE
PIPE THREAD
ADAPTOR 1W/CAP
1,5'• DIA BALL
VALVE
1,5" DIA PVC LONG
SWEEP 90^ BEND
IN-SITU SOIL
STATE SETBACK GUIDELINES
REMOVABLE PVC CAP—
INSTALL MARKER IF CAP
IS TO BE BURIED.
FINISH GRADE-\
4" COU
4" 45• SWEEP
4" SEWER
4 n
h -r A -r
P VC WYE
SEWER CLEAN OUT DETAIL
N.T.S.
3ER
CLEAN OUT
ASSEMBLY
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PROJECT NO.
2141753
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