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OWTS DESIGN CALCULATIONS 2015:
•.SEDROOM RESIDENCE:
(75 GAUPERSON/DAY x 2 PERSONS/BEDROOM x 3 BEDROOM)+ (75
GAUPERSON/DAY X1 BEDROOM)
DESIGN FLOW = Q = 525 GALLONS
TANK SIZING:
(525) x 48/24 HOUR RETENTION TIME= 1,050 GALLONS
USE 1,250-GALLON, TWO-COMPARTMENT TANK WITH DOSING PUMP.
ABSORPTION AREA SIZING:
LTAR RATE= 0.60 GAUSF (USDA SANDY LOAM WITH PUMP)
CALCULATED ABSORPTION AREA= A=(Qd/LTAR)•(525/0.6)
Qd =DESIGN FLOW= GAL/DAY
ABSORPTION AREA= 875 SF
30% REDUCTION FOR CHAMBERS IN TRENCH
TOTAL AREA Rl1QUIREO FOR 4 BEDROOMS• 113 SF
HANGING 2" PRESSURE PIPE IN ADS CHAMBERED TRENCH SYSTEM:
ABSORPTION AREA PER DESIGN 613 SF.
EACH ADS CHAMBER ACCOUNTS FOR 15SF OF AREA.
41 CHAMBER REQUIRED.
(3 ROWS OF 10 CHAMBERS) AND (1 ROW OF 11 CHAMBERS)
SPACED 6' APART FOR REQUIRED AREA.
GROUND WATER PER SOILS REPORT AT 7', BURY DEPTH OF
CHAMBERS 13" + 12", 25" TO BOTTOM OF CHAMBERS.
FIELD BOTTOM SET 4' ABOVE WATER ABLE PER LT1 TREATMENT
SYSTEMS DESIGN.
IF CONTRACTOR WISHES TO UTILIZED INFILTRATOR QUICK 4
CHAMBERS, CHAMBER COUNT WILL INCREASE TO 51 .
SITE CONSTIWNT$:
WATER TABLE AT 5' IN DEPTH, ESTIMATED ELEVATION: 6206'
IRRIGATION DITCH TO WEST SIDE OF PROPERTY.
STORM WATER DITCH TO SOUTHEAST SIDE OF HOME LOCATION
CROSSING
l..l&SOMl~U.t~fMol,tl,HQTOta"D ION Wf!llU~nt
2 THE BOTTOM OF EACH ASSORPTION TRENCH SHALL BE LEVEL
i
3, DRAINAGE SWALES ARE TO BE PROVIDED ABOVE ANO AROUND TRENCHES, AS NECE~RY, TO PREVENT SURFACE RUNOFF
FROM ENTERING ABSORPTION AREA.
4 TRENCH LATERALS SHALL FOLLOW CONTOURS IF POSSIBLE~
5. INSTAlL CHAMBER IN ACCORDANCE WITH MANUFACTIIRER'S RECOMMENDATIONS .
&..TJ!ftotlllD1'0l'.IA'ilji!Ol:WAJ.U!MrerJ1.AU010JW,t.O<,t!.Oa.,w:»S'i!iC~IDVMGD:C.&Y""llO'l.
7, NO EXCAVATION OF ABSORPTION FIElD IS TO BE DONE DURING WET WEATHER AND USE OF RUBBER TIRE VEHIClES OVER
ABSORPTION AREA IS PROHIBITED
e BOULDERS EXISTING WITHIN THE TRENCH SHALL BE EXCAVATED AND BACICFILLSHAU CONSIST OF ONSITE SELECTOR PIT-RUN
MATERIAL
9 SUBMIT SHOP DRAWINGS FOR REVIEW PRIOR TO ORDERING SYSTEM PARTS.,
10, THE CONTRACTOR SHAU BE RESPONSIBLE FOR VERIFYING THE LOCATIONS AND DEPTHS OF All EXISTING BURIED UTILITIES.
11 CLEAN OUTS AllE REQUIRED WITHINS FEET OF Tl1E HOUSE FOUNDATION, AT AU. BENDS EQUALING OVER 90D DEGREES AND
AT A MAXIMUM OF 100 LF SEPARATION ALONG THE SEWER LINE RUN
12, THE CONTRACTOR SHAll BE RESPONSIBLE FDR INSTALLING ALL WATERTIGHT COMPONENT5, PRIOR TOTllE ASSOR~ON
AREA, TO PREVENT INFILTRATION,
13 TOPSOIL COVER MAY BE VARIED (WITH 12" MINIMUM) TO ALLOW FOR NON·INTRUSIVE LANDSCAPING, MAXIMUM BURY
DEPTH OF 3' IN DEPTH TO BOITOM OF TRENCH/CHAMBERS
14. INSTALL RISERS AS NECESSARY TO BRING ALL ACCESS POINTS TO ONE·HALF FOOT ABOVE FINAL GRADE
tS, LOCATIONS OF AU COMPONENTS MAY BE VARIED AS NECESSARY AS LONG AS AU MINIMUM DISTANCES AND SLOPES MEET
THOSE REQUIRED.
16 THIS ORA WING DOES NOT CONSTITUTE AN OWTS PERMIT. PERMIT MUST BE OBTAINED FROM APPROPRIATE COUNTY
OFFICIALS ENGINEER MUST OBSERVE CONSTRurno SYSTEM BEFORE BACKFILL ANO PROVIDE REPORT TO COUNT/AS BUILT
DRAWING
17 THIS SYSTEM IS SIZED FOR TYPICAL DOMESTIC WA.STES ONLY. BACKWASH OR FLUSHING FLOWS FOR REVERSE OSMOSIS UNITS
OR WATER SOFTENERS OR FILTERS SHOULD NOT BE INTRODUCED INTO THIS SYSTIM, GARBAGE DISPOSAL INSTALlATION AND
USE IS ALSO DISCOURAGED
18, INSTALL BLUE BOARD INSULATION OVER SEWER PIPE WHEREVER DEPTH IS LESS THAN FROST DEPTH.
19, DUE TO THE EL.EV,r.TION OF GROUND WATER, THE ENGINEER MUST BE ONSITE ANO A TEST PIT ADJACENT TO FIELD AREA Will
NEED TO BE DUG TO VERIFY THE SOILS SELECTED AND REVIEW WATER TABLE DEPTH.
20, SITE PLAN INFORMATION, NUMBER OF BEDROOMS, SIZE OF HOUSE PROVIDED BY PROJECT CLEAJIWATER CONSTRUCTION.
21. LEACH FIELD MUST BE SURVEYED AFTER INSTAUATION FOR ACCURATE LOCATION FOR FINAi.FiELD INSPECTION, AS-BUILTS
AND WRITE-OFF.
22 . NO IRRIGATION DITCH FACILITIES AAE TO BE CONSTRUCTED ON THE SITE. ONSITE LANDSCAPE IRRIGATION Will NOT BE
APPLIED TO THE OWTS SYSTEM AREA EllCEPTING TEMPORARY FACILITIES TO ENCOURAGE GRASS GROWTH FOR THE FIRST Y£AA ,
23 DOMESTIC WATER 15 TO BE PROVIDED BY TliE ON SITE WELL
2-4 ,ALLCONSTRUCTION SHALL BE IN ACCO ROAN CE WITH THE GARFIELD COUNTY REGULATIONS FOR ON SITE WASTEWATER
T RfAf.M'fjilS'1iRM~.111ltoM'rllt.Cl011:114MLHlll:loJO:ll'.HilfO.WOtl!.HOl'ICOUMSiMflUIMU)t0LNl'llt
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25. CONCRETE SEPTIC TANK SHALL COMPLY WITH THE STRUCTURAL OESICiN ClUTERIA OF ASTM C1227-12 (STANDARD
SPECIFICATIONS FOR PRECASTSEPTICTANl<S)
26 PUMP SIZING TO BE FINALIZED UPON ORDERING OF THE TANK AND FINAL oNSrre APPROVAL OF THE FIELD LOCATION.
PROPERTY
LINE.
/
25' SETBACK TO
INTERMITTENT Cl.I IRRIGATION~~.' LATERAL Ci)
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;/ _______ _
/ ----; ---,,. --
ROARING
LDT
FORK
5
PRESERVE
I
BUILDING
ENVELOPE.
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/ ¥----. -~. .... ........................ '\
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/' 25' SETBACK TO -....., \ ~ r
INTERMITTENT '-.., ~---.
IRRIGATION PIPE OUTLET '-.. O ----
LATERAL. BELOW FOOTER. '-..,
......... ", \____, . .
\ ----· I ' 6'<';o: ~ \ __ ., ~·
60LF OF~/-------/--; o ........ _....._,
PVC AT 2.Y. • '
GRADE TO
TANK INLET. 60LF OF 4'
PVC AT 2Y. -----
100' \/ELL GRADE TD -----SETBACK.~TANK INLET.,,.. .............
_,,,,,,,,"" , 6221_ -
,,."' ,,."' APP~~~~M~i~ /
LDCAT!ON,l· / ELEV. 6219' I
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BUtLDING
ENVOJlPE.
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4' INSPECTION
PORTS, EACH END
OF CHAMBER
RUNS,
41 -ADS
CHAMBERS,
150' TO PROPERTY LINE
4-\,/AY MANIFOLD
BOX \,/ITH 2' PVC
INLET PIPE AND
4 -2' PVC OUTLET
PIPES TO CHAMBER
RUNS, EACH MANIFOLD
TO HAVE 2' BALL
VALVE.
2' PRESSURE
LINE, lOOLF.
BURY DEPTH 3'.
6220.56
6221.02
6220.92
6220.88
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PROJECT NO.
2161022
OWTS-1
UTILIZE UPPER MANIFOLD
PORTS FOR PIPE AlTACH MENTS.
2" DISTRIBUTION PIPE TO HANG
FROM TOP OF CHAMBER 'MTH.
!" HOLES AT 2' SPACING
DIRECTED TO TOP OF CHAMBER.
ONE !" HOLE AT END OF PIPE
TO DRAIN PIPE FACING DOWN,
GLUED CAP AT END OF 2"
RUN.
~ \ I 24" MA>t COV "'..,._ :jTI"':' / \ 01/ERTRI r-/ . ,, ..
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•ti l !Z!(fll tii=i 11
NATURAL
GROUND
INSPECTION WELL DETAIL
L.Cetar;rt T.tJf(WUMtn "llMCin .n..trA~
2, ADDITION OFA DtW041. ~J:U"'°H'4'&dC CfliOMT4Nl(Ql.l.Yl [M WLl."CIC»IG'THf UFEOFlHETANI( CONCRETE, NOT REQUIRED
Item#
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lil = --"il~r. ~--~,, "v _ f1 Vt ! L.=~ff--1l...-.,-.J'
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Will r.ALJ.Br == -(719).wnT --CIDll121
1
PlmCABT,raa. ·-="'=-~-
TYP ICAL 1 .250 GALL ON TWO
COMPARTMENT SEPTIC TANK
WITH HIGH HEAD DOSING PUMP
ADS INFILTRATOR
UNIT & END CAP. 7' APPROXIMATELY
TO WATER TABLE
PER SOILS REPORT.
TABLE ELEV: 6212'
~-------------------1 -
TR EN CH CROS S SECTIO N (TYP.)
NOlES:
MANIFOLD BOX WILL REQUIRE RISER RINGS TO PLACE AT PROPER BURIAL DEPTH.
INTERIOR 2" PUMP LINES 'MLL HA\!£ BALL VALl!f:S FOR EACH FlELD SUPPLY LINE
'MTHIN THE DISTRIBUTION BOX IN A MANIFOLD STYLE LAYOUT.
2" DISTRIBUTION LINES 'MLL BE HUNG FROM THE TOP OF THE CHAMBERS WITH
HOLES FACING UPWARD. ONE i" HOLE 'MLL FACE DOWNWARD AT THE END OF THE
CAPPED CHAMBER LINES FOR DRAINING OF THE LINES. PLACE A 12" X 12" X 6"
DEEP GRAl!f:L PAD BELOW DRAIN HOLE 'MTHIN CHAMBER RUN.
ADS ARC INFlLTRATORS ARE RECOMMENDED, BUT OTHER INFlLTRATION CHAMBERS
ARE AVAILABLE. REVIEW WITH ENGINEER OF RECORDED IF CHAMBER TYPE IS
REVISED.
PLACE INSPECTION PORTS AT BOTH ENDS OF THE FlELD CHAMBER RUNS.
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SIDE VIEW
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REAR/TOP VEW
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ADS CH AM BER DETA IL
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43 7 Minimum Olataras Between Compcw1enta ol' an On-site W ..s.wr.. Traatment 8yel8m and Phy&ical Feal!Jrn
T11bte7-1 Mlnlmllm Horizontal DlllanC11111 In Fnt BetwHn Ccmrpo11.,. of an On .. llt Wn tnnucir TNtllMnl lyattm lnat.llld After
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Uno Una C!etem Unad ·-lrrlgaUon Bank, Ah
lntgsllon l.obml~ Oilch. -Dllch Drywol~ s ..... (from -""""""'
Walland ~) ·-Se~ Tmik, Hlghm LBvel so' 1D' 2S 5 10 10 " 10 -naatment Unit, Daslng Tri,
Vautt ' ~orEtnuo M Llrit & I so' 10' ••• 0 10' 1D' I ... 10' -
STA Tre~. STA Bed, Unltned I 100' 2II 26 .. 10 I 2S ... 26 • Sand Filter, Sub-surface
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Lined E11&1JG-!ransplratlon Fekl or .. 1o' •• ,.
OUtalda or Berm of Lined
10 10 26 10 5
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100 25' 2S 15 10 25 2S 1• 10
Minutes per Inch, U~dor
Partialty Lined EvepQtremi·
plratiD11 S)S'tem, Oubide af Berm
1
01' Unlined WmleWBter Pond, or
I Splem Nol Relylng on STA fDr ~0ttier·i:--Asrosnl
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STATE SETBACK GUIDELINES
REMOVABLE PVC CAP
INSTALL MARKER IF CAP
IS TO BE BURIED.
FINISH GRADE
4" x 4" x 4"
PVC WYE
4" RISER
-{:0£AA ru'
ASSEMBLY
SEWER CLEAN OUT DETAIL
N.T.S.
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PROJECT NO,
2161022
OWTS-2