HomeMy WebLinkAboutEngineer's OWTS Design PlanNOTE: _: l
LOCATIONS OF ALL COMPONENTS
INSTALL DISTFBUTION MAYBE VARIED AS NECESSARY AS i
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LOCATION OF EX
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SITE EVALUATION
1. SITE AND SOIL EVALUATIONS WERE PERFORMED BY:
DERIC J. WALTER, PE ITV1N DYE, PE
BOUNDARIES UNLIMITED INC. GEO QUEST
923 COOPER AVE., STE. 201 PO BOX 1372
GLENWOOD SPRINGS, CO81601 RIFLE, COLOROO81650
970.945.5252 970.318.6784
2. EVALUATION DATE(S): MAY 27, 2024.
3. SETBACK REQUIREMENTS FOR A TREATMENT LEVEL 1 STA TRENCH/BED, UNLINED
SAND FILTER OR SEEPAGE PIT (PER TABLE 7-1) AND AN ADWF=450 GRID:
3.A. SPRING, WELL OR POTABLE CISTERN=109
3.B. POTABLE WATER SUPPLY LINE=25'
3.0. STRUCTURE W/ BASEMENT/CRAWL SPACE=20'
3.D. STRUCTURE W/O BASEMENT/C RAWL SPACE=10'
3.E. PROPERTY LINE, PIPE OR LINED IRRIGATION DITCH =10'
3.F. INTERMITTENT IRRIGATION LATERAL, INFILTRATION STRUCTURE=25'
3.G. LAKE, WATER COURSE, IRRIGATION DITCH, STREAM OR WETLAND=50'
3. IT DRY GULCH, CUT BANK OR FILL AREA=25'
3.1. SEPTIC TANK=5'
3.J. RESTRICTIVE LAYER OR GROUNDWATER (VERTICAL): 4' (TREATMENT LEVEL 1,
GRAVITY FEED)
3. SETBACK REQUIREMENTS FOR THE SEPTIC TANK SHALL BE (PER TABLE 7-1):
3.A. SPRING, WELL OR POTABLE CISTERN=50'
3.B. POTABLE WATER SUPPLY UNE=1 0'
3.C. STRUCTURE W/ BASEMENT/CRAWL SPACE=5'
3.D. STRUCTURE W/O BASEMENT/CRAWL SPACE=5'
3.E, PROPERTY LINE, PIPE OR LINED IRRIGATION DITCH=10'
3.F. INTERMITTENT IRRIGATION LATERAL, INFILTRATION STRUCTURE=10'
3.G. LAKE WATER COURSE. IRRIGATION DITCH STREAM OR WETLAND=50'
3.H. DRY GULCH CUT BANK OR FILL ARE A=10'
3.1. STA TRENCH/BED, UNLINED SAND FILTER OR SEEPAGE PIT=5'
SOIL EVALUATION
1. SOIL WAS CLASSIFIED BY THE GEOTECHNICAL
ENGINEER (GEO QUEST (PROJECT #24-162,
AUGUST 11, 2024) AS USDA CLAY LOAM; TYPE 3A;
WITH AN LTAR OF 0.30 GPD/SF.
F
>12"
SURFACE
\ \ \ \
/ SAND, SILT, CLAY,
,/
TAN MOIST
Site & Soils Evaluation
Scale: N.T.S.
GENERAL ABSORPTION AREA NOTES
1. INSTALL CHAMBER UNITS IN ACCORDANCE WITH
MANUFACTURER'S RECOMMENDATIONS.
2. NON -PRESSURIZED ABSORPTION AREAS SHALL NOT
EXCEED 100-FEET IN LENGTH, SHALL PARALLEL THE
TOPOGRAPHY AND SHALL BE INSTALLED IN A
RECTANGULAR/LINEAR PATTERN WHENEVER POSSIBLE,
3. THE BOTTOM OF THE ABSORPTION AREA SHALL BE
LEVEL AND THE BOTTOM AND SIDEWALLS MUST BE
RAKED TO REMOVE ANY SOIL SMEARS INCURRED
DURING THE EXCAVATION. FAILURE TO DO SO MAY
REQUIRE THE CONTRACTOR TO REPLACE THE
ABSORPTION FIELD AT HIS/HER OWN EXPENSE.
4. DRAINAGE SWALES ARE TO BE PROVIDED ABOVE AND
AROUND THE ABSORPTION AREA, AS NECESSARY, TO
PREVENT SURFACE RUNOFF FROM ENTERING
ABSORPTION AREA.
BOX & COVER - LID
COLOR PURPLE
OR GREEN -
LABEL "SEWER"
FILL OVER THE CHAMBERS
WITH UNCOMPACTED WELL
GRADED LOCAL SOILS,
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5
GRAVELLESS CHAMBER SYSTEM:
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INFILTRATOR QUICK 4, ADVANCED
DRAINAGE SYSTEMS ARC (STANDARD),
OR ENGINEER APPROVED EQUAL.
OPTIONAL: COVER THE CHAMBERS WITH A
NON -WOVEN FILTER/LANDSCAPE FABRIC
TO LIMIT THE POTENTIAL FOR FINE
MIGRATION INTO THE SYSTEM
THE INFLOW PIPE SHALL ENTER THE
UPPER PORT OF THE END CAP
5. NO EXCAVATION OF THE ABSORPTION AREA IS TO BE
DONE DURING WET WEATHER AND USE OF RUBBER
TIRE VEHICLES OVER THE ABSORPTION AREA IS
STRICTLY PROHIBITED.
6. UNSUITABLE MATERIAL EXISTING WITHIN THE
ABSORPTION AREA SHALL BE EXCAVATED AND
BACKFILL SHALL CONSIST OF IMPORTED LOAMY SAND
OR SANDY GRAVEL. THE ENGINEER SHALL BE
CONTACTED IF BEDROCK OR GROUNDWATER IS
ENCOUNTERED IN THE EXCAVATION.
7. TOPSOIL COVER MAY BE VARIED (1-FOOT MINIMUM,
2-FOOT MAXIMUM) TO ALLOW FOR LANDSCAPING.
8. WHEN MULTIPLE LATERALS OR BEDS ARE USED,
LATERALS OR BEDS SHALL BE SEPARATED BY 6-FEET
MIN, OF UNDISTURBED SOILS,
STANDARD INSPECTION PORT, TYP. (4"0 PVC
SOLID PIPE CUT TO FIT. LOCATE PER PLAN
VIEW. ATTACH A REMOVABLE CAP OR
THREADED CLEANOUT ASSEMBLY.
COVER WITH 6" OF TOPSOIL
I AND REVEGETATE
4"0 PVC PIPE
':. 4"0 COUPLING (UNION). USE A
_ HOLE SAW TO CUT OUT THE
CIRCLE IN THE UNIT,
4"0 PERFORATED PVC PIPE.
..;'; \/, ,EXTEND PIPE TO REST ON
OTTOM OF THE BED
BOTTOM TO BE LEVEL AND FLAT OVER ENTIRE AREA TO WITHIN
Dl'±. (TYP.). IF NECESSARYTO ACHIEVE THIS SURFACE, IMPORT
CONCRETE SAND TO USE AS LEVELING MATERIAL. REMOVE ANY
ENCOUNTERED BOULDERS AND BACKFILL WITH LOAMY SAND OR
SANDY GRAVELS. DO NOT USE COMPACTED MATERIALS,
Gravelless Chamber Absorption Trench
Scale: N.T.S.
MAINTENANCE NOTES
1. TO ENCOURAGE THE HEALTH AND LONGEVITY OF THE OWTS SYSTEM, THE OWNER SHALL CONSIDER
THE FOLLOWING:
.A. U F S DOWN THE DRAIN THE BETTER YOUR SYSTEM
1 MINIMIZE THE AMOUNT 0 WATER THAT GOES ,
WILL WORK.
1.8. MINIMIZE SOLIDS GOING DOWN THE DRAIN.
1.C. ELIMINATE GARBAGE DISPOSALS OR KEEP THE USE OF GARBAGE DISPOSALS TO A MINIMUM.
1.D. MINIMIZE GREASE AND OILS THAT GO DOWN THE DRAIN.
1.E. USE LINT FILTERS ON LAUNDRY MACHINE DRAINS.
1.F. KEEP SAND AND DIRT OUT OF THE BUILDING DRAIN.
1.G. AVOID FLUSHING SANITARY NAPKINS OR PAPER PRODUCTS OTHER THAN TOILET PAPER.
1.H. DO NOT USE LYE -BASED DRAIN UNCLOGGER CHEMICALS SUCH AS DRAINO, OVEN -OFF, OR OTHER
STRONG CLEANING AGENTS.
1.1. DO NOT PUT ANY "ROOT DETERRENTS" DOWN THE DRAIN.
1.J. DO NOT POUR PAINT THINNER, PESTICIDES, PAINTS OR PHOTO LAB CHEMICALS DOWN THE DRAIN
1.K. MINIMIZE USE OF CHLORINE BLEACH AND TOILET ADDITIVES.
2. THE OWNER SHALL CONTRACT WITH A SEPTIC TANK INSPECTOR TO INSPECT THE TANK ANNUALLY FOR
GREASE AND SEDIMENT ACCUMULATION. THE INSPECTOR SHALL REMOVED AND PROPERLY DISPOSED
OF ACCUMULATED GREASE AND SEDIMENT AS NEEDED TO ENSURE PROPER FUNCTION OF THE
SYSTEM.
ATTACH REMOVABLE CAP OR
THREADED CLEANOUT ASSEMBLY. 1
INSTALL MARKER IF CAP IS TO I FINISH GRADE
BE BURIED,
4"0 PVC TWO-WAY
CLEANOUTTEE
0
4"0 PVC RISER
�- 4"0 SEWER LINE
Two Way Cleanout
Scale, N.T.S.
11 Concrete Distribution Box
aoxsc (al Inlet, 7 Outlets) & Riser
Top View
28"
15"
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Section View End View
28" 15" -
25"
- 12" --
14" i ®®®a ♦� 14"
5.".
7•
1 i
Down Baffle
REQUIRED
REQUIRED
_ 28"
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ROTO-FLOW r
-OR - . POLYLOCK EQUALIZER
a a , . ; : 4
p� a //�1�
R 4
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"W NOTCH• WEIR
SHAPE IS
-;ELF
,♦ .. i a II " _ a 20
/\
SELF LEVELING
.
NOT TO SCALE
RIBS PROVIDE FRICTION --
Lid View
FIT FOR ALL C PIPE ID
NOTE:
THIS MANUFACTURER'S CUT SHEET IS FOR REFERENCE NOT TO SCALE
PURPOSES ONLY, OTHER
MANUFACTURERS SUPPLYING
COMPARABLE PRODUCTS MAY BE USED.
•
6000 PSI Concrete
Riser Section
•
7 Outlet equal flow
Access to Grade Required
•
Slide -in Baffle.
4" Pipe penetration ports
---- 28"
•
Connectors cast into the box
- 15" -
•
12" Riser available
12" , ♦ d 2" . j
1a 1 Wel9
�ht
.
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-- 12^ -- D-Box with Baffle - 200 Ibs
Side View End View D-Box Lid - 75 Ibs
D-Box Riser -140 Ibs
'rALLEY
Do PRECAST, Inc.
L__ Buena Vista, Colorado
Phone: 719-395-6764
www.valleyprecastcom
� •On f ! -Kr M•I.
132 Rusty Spur Trail
County of Garfield,
State of Colorado
Parcel No: 2127-332-00-373
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SYSTEM DESIGN & CONSTRUCTION NOTES:
1. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH CDPHE REGULATION 43 ONSITE WASTEWATER TREATMENT SYSTEM (OWTS) REGULATION, MOST
CURRENT EDITION AND LOCAL AGENCY REQUIREMENTS WHICH MAY OR MAY NOT SPECIFICALLY BE NOTED ON THE DRAWINGS. THE CONTRACTOR SHALL
BE RESPONSIBLE FOR KNOWING AND CONFORMING TO SUCH SPECIFIC DETAILS AS ARE REFERRED TO IN THE ABOVE MENTIONED REGULATIONS. THIS
DRAWING DOES NOT CONSTITUTE AN OWTS PERMIT. A PERMIT MUST BE OBTAINED FROM APPROPRIATE LOCAL AGENCY. THE CONTRACTOR MUST
CONTACT THE LOCAL AGENCY HEALTH DEPARTMENT AND THE PROJECT ENGINEER FOR INSPECTIONS OF THE CONSTRUCTED SYSTEM BEFORE BACKFILL.
A REQUEST FOR INSPECTION BY THE PROJECT ENGINEER AND THE COUNTY ENVIRONMENTAL HEALTH OFFICER MUST BE MADE AT LEAST 72-HOURS
PRIOR TO THE DESIRED TIME OF BACKFILLING.
2. DEMAND CALCULATIONS (SEC.43.6.A.2.h)
2.A. THREE (3) BEDROOM RESIDENCE USING TREATMENT LEVEL 1 (TLI).
2.B. AVERAGE DAILY WASTEWATER FLOW (ADWF) AND ORGANIC LOAD RATE (BODs):
2.6.1. SINGLE FAMILY DWELLING: 75 gpdc & 0.20 BOD5Ibs/day
2.B.2. ADWF:
2.B.2.1. RESIDENCE = 75 gpd * (3 BEDROOMS * 2 PERSONS/BEDROOM) = 450 gpd
2.B.3. B005 = 0,20 Ibs/day * 7 PERSONS =1.40 Ibs/day
BOD5 mg/L = BODS*1,OOQ000 = 1.40lbs/daV*1,000,000 = 319.74 mg/L
ADWF*8.34 450 gpd*8.34
2.8A. CBOD5 = BOD5 * 0.85 = 272 mg/L
3. SEPTIC TANK (SEC.43.9.8.2.a):
3.A. INSTALL A 1,000-GALLON (MINIMUM) TWO COMPARTMENT SEPTIC TANK (TABLE 9-1).
3.B. THE TANK IS NOT SUBJECT To BUOYANCY.
4. ABSORPTION AREA CALCULATIONS:
4.A. THE ABSORPTION AREA SLOPES GENTLY.
4.B. LONG TERM ACCEPTANCE RATE (LTAR) FOR TREATMENT LEVEL 1 (TL1) OF 0.30 gpd/SF (SEE SITE & SOILS EVALUATION NOTES/DETAIL).
4.C. MINIMUM SOIL TREATMENT AREA, A:
A = ADWF = 450 = 1,500 S.F.
LTAR 0.30gpd/S.F.
4.D. SIZE ADJUSTMENT FACTORS: GRAVITY TRENCH = 1. 0; CHAMBERS = 0.7 (TABLE 10-1 A),
4. CA A,adj = 1,500 SF * 1.0* 0.7 = 1,050 SF
4.E. GRAVELLESS CHAMBER BED SYSTEM:
4.E.1. INFILTRATOR QUICK4: 1,050 SF / 12 SF/UNIT = 88 UNITS. INSTALL 88 UNITS IN FOUR (4) TRENCHES (22 UNITS PER TRENCH).
4.E.2. ADS ARC: 1,050 SF / 15 SRUNIT = 70 UNITS. INSTALL 72 UNITS IN FOUR (4) TRENCHES (18 UNITS PER TRENCH).
5. THIS SYSTEM IS SIZED FOR TYPICAL DOMESTIC WASTES ONLY. BACKWASH OR FLUSHING FLOWS FOR REVERSE OSMOSIS UNITS (EXCLUDING SMALL
UNDER -SINK) OR WATER SOFTENERS AND/OR FILTERS SHOULD NOT BE INTRODUCED INTO THIS SYSTEM.
6. CLEAN OUTS ARE REQUIRED AT THE HOUSE AND AT ALL BENDS AND AT LEAST EVERY 100-FEET BETWEEN THE HOUSE AND THE SEPTIC TANK.
7. THE CONTRACTOR SHALL BE RESPONSIBLE FOR INSTALLING ALL WATER TIGHT COMPONENTS THROUGHOUT THE SYSTEM TO PREVENT INFILTRATION.
8. INSTALL RISERS AS NECESSARY TO BRING ALL ACCESS PORTS TO FINAL GRADE. PORTS SHALL BE MARKED IF CAPS ARE TO BE BURIED.
9. INSTALL 3-INCHES OF BLUEBOARD INSULATION, 3-FEET WIDE, OVER SEWER AND EFFLUENT PIPE WHEREVER DEPTH IS LESS THAN 3-FEET. UNDER NO
CIRCUMSTANCES SHALL COVER BE LESS THAN 2-FEET.
10. SITE PLAN INFORMATION FROM OTHERS. LOCATIONS OF ALL COMPONENTS MAY BE VARIED AS NECESSARY AS LONG AS ALL MINIMUM DISTANCES AND
SLOPES MEET THOSE REQUIRED.
Item 0 1000 Gallon Top Seam - 2CP
1000T-2CP
DESIGN NOTES
• Design per performance test per
ASTM C1227
• Tap surface area 46.25 fix
• fc O 2a days; concrete = 6,000 PSI
Min.
installation:
• Tank to be set on 5" min. sand
bed or pea gravel
• Tank to be backfilled uniformly on
oil sides In lifts less than 24" and
mechanically compacted
• Excavated material may be used for
backfill, provided large stones ore
removed
• Excavation should be dewatered and
tank filled with water prior to being
put in service for Installation with
water table less than 2' below grade
• Meets C1644-06 for resilient
connectors
• Inlet and Outlet identified above pipe
• Delivered complete with internal
piping
• 4' Maximum bury depth
ALLOWABLE BURY
(Based on Water Table)
WATER TABLE
ALLOWABLE
EARTH FILL
0' - 0"
2' - 0"
V a"
3' - a"
2' - 0"
3' - 0'
3' - 0'
4' - 0'
6"
ORY
4' -
Fleftle
4-
Top
View
t3i Grade
1im 7-7 71
"'TAEIIJ:,
RTRO
NO
Section
View
NOTE:
THIS MANUFACTURER'S CUT SHEET IS FOR REFERENCE
PURPOSES ONLY OTHER MANUFACTURERS SUPPLYING
COMPARABLE PRODUCTS MAY BE USED,
-. - --
-. -. _ Net Capacity Net Weight
Digging Specs Invert , Dimensions III
11 Long x 7' Wide �lnlet {Outlet Length Width Height Inlet Side Outlet Total Lid Tank Total
56" below inlet 56 53" 111' 60" 68" 687 gal 323 gal 1010 gal 2620 Ibs 9380 Ibs 12000 Ibs
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P AS, Inc.
� Buena Vista, Colorado
Phone: 719-396.67764
Fax: 719-395-3727
Websiie: www.vaileyprecestoom
Email: frorMesk@valleypnxwL om
Civil Engineering
Surveying
& Beyond
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ed Inc•
923 Cooper Avenue
Suite 201
Glenwood Springs, CO 81601
telex 970.945.5252
fax: 970.384.2833
Engineer or Surveyor Seal
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37110
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Client Information:
David Mul/enex
132 Rusty Spur Trail
Riiis' C0 81650
970.368.2065
NORTH
0 30' 60
Scale: 1" = 39
Know what's below.
Call before you dig.
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PROJECT NO
Sheet
24025
FILE NAME:
24025-V-tdpo.&I
Designer:
a1w
C.
/Dreher
arw
Date:
08119124