HomeMy WebLinkAboutAs-Built OWTS Plan 03.30.2021t
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2.91 ACRES
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INSTALLED 3-COMPARTMENT 1,500-GALLON CONCRETE SEPTIC TANK
(VALLEY PRECA5T ITEM # 1500t-30-HH)
INSTALLED ORENCO SIMPLEX EFFLUENT PUMP ASSEMBLY. (PVU57-1819-L)
WIP300511 PUMP), W/ 1.5" DiSCHARGEA5SEMBLY IN SOD -GALLON 3RD
COMPARTMENT DOSING CHAMBER..
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PRESSURE DOSE TRANSPORT PIPE. USE 1.25 $CHO-40 W/
3.0' MIN. DEATH OF BURY. BED PiPE W/ CL-6 ROAD BASE,
INSTALL A T MIN, 2.5% TO ALLOW DRAIN BACK TO TANK.
1.25" PRESSURIZED
MANIFOLD PIPE.
INSTALLED 4" RISER PIPE INSPECTION PORT
W/ CAP AT EACH CORNER OF THE BED (TYP.)
INSTALLED ABSORPTiON/TREATMENT PRESSURE DOSED SAND FILTER BED
WITH 48 QUICK-4 iN 3 ROWS WITH 16 CHAMBERS PER ROW FOR A TOTAL ABSORPTION
AREA OF 8415 JAF. THE CHAMBERS SHALL BE INSTALLED AT LEVEL GRADE. BED
EXCAVATED TO 3.5 FEET WITHIN THE NATIVE GRAVELY LOAMY SAND & BACKFiLLED WiTH
A 24-iNCH SAND FILTER LAYER & 12" NATIVE BACKFILL COVER OVERTOP OF CHAMBERS.
1 114" PVC SCHD-40 CUSTOM PERFORATED PIPE DISTRIBUTION LATERALS. DRILLED 5/32-INCH
VIA. ORIFICES EVERY 3.0-FEET ALONG THE PIPE & PLACE ON THE TOP OF THE ABSORPTIVE
SAND SURFACE. ORIENT ORIFICES BETWEEN THE FIRSTAND LAST TO SPRAY UPWARD (12
O'CLOCK) AGAINST INTERIOR OF CHAMBERS, VR IL L FIRST AND LAST 5/32" O RIFiCES ORIENTED
DOWNWARD AT BOTH ENDS OF DISTRIBUTION LATERAL TO ALLOW DRAINAGE OF OUT OF PIPE.
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INSTALLED 4" RISER PIPE INSPECTION PORT ON ONE OF EACH12
PAIRED END CAP PENETRATION (TYP.) ABOVE THE 1.2S" FLUSH
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BALL VALVE ON THE PERFORATED DISTRIBUTION LATERAL (TYP.)
INSTALLED PIEZOMETER INSPECTION PORTFIELD CORNERS
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CROWN FIELD TRENCH TO
DiVERTSURFACE WATER
EXISTING GRADE
TOPSOIL
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REMO-DLED HO
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POST MOUNTED OWTS PUMP CONTROL BOX
POWER SUPPLY TO CONTROL BOX iN CONDUIT. WIRES
FOR PUMPS & CONTROLS !INSTALLED TO EXTERNAL SPICE
BOX ON RISER IN ELECTRICAL CONDUIT.
317NSTALLNDERGROUND ELECTRICAL & CONTROLEX1Si �l Y�yRY UV WIRES OR WIRES IN CONDUIT FOR
PUMPS WITHIN 5EWER PIPE TRENCH & CONTROLS.
14" GRAVITY SEWER PIPE �W�❑ 1 O'X20
INSTALL @ 2°% GARDEN SHED
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100'SETBACK
EXISTING SPRING BOX
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CONNECT 1.25" TRANSPORT LINE
TO 1.25" PRESSURE MANIFOLD. TRANSPORT PiPE INVERT A MIN,
SEED AND MULCH FINISH SURFACE 2" HIGHER THAN INVERT OF MANIFOLD TEE CONNECTION. USE
MAINTAIN SUITABLE VEGETATIVE COVER 45'OR 22.5' FFFTiNG5.
1.25" SCHD-40 PVC PRESSURE MANIFOLD W/ INDIVIDUAL
,1,-1.25" SCHD-40 PVC 1.25" TEES OR ELBOWS TO 1,25" CUSTOM PERFORATED
DISTRIBUTION MANIFOLD DISTRIBUTION PIPE
CHAMBER END CAP
12"
MIN.
0.5' (TYP.)
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UNDISTURBED EARTH N.T.S.
CUSTUME PERFORATED
SCREENED BACKFILL
NATIVE SOIL -' - '-^':•,'_. ..;;:_ \ PRESSURE PIPE WITH
24"
1,25" TEE CONNECTION / ORIFICES AT 12 O'CLOCK NATIVE, YARD DR
SECURE PIPE WITH PUSH IN = LANDSCAPED SURFACE
STAPLE$ INTERMITTENTSAND FILTER LAYER
QUiCK-4 INFILTRATOR / / / EFFECTIVE SIZE 0.25-0.6 MM, WiTH
OR EQUAL BIO DIFFUSER / \/ //\/: ` \/\ / UNIFORM- USE
SPRAY SHIELDS SAND- \ \ \ \ \ \ � �\ � \ CONCRETE SAND-AST5TM-33 6" MiN.
12'-MiN. � \%/ /
PRESSURE DISTRIBUTION PIPE
CONNECTED THROUGHENDCAP NATIVE GRAVELLY SILT LOAM 6 MIN EXCAVATED MATERIAL
NOTE: 501L WiTH COBBLES COMPACTED TO 90%
TO CUSTOM PERFORATED THE INTERMITTENT SAND FILTER BED MUST BE LEVEL. INSTALL CHAMBERS WITH INLET AND STANDARD PROCTOR
DISTRIBUTION LATERAL PIPE END CAPS OVER SAND LAYERT FOR USE AS SPRAY SHEILDS. INSTALL INDIVIDUAL
DISTRIBUTION LATERALS TO THE HEAD OF EACH CHAMBER ROW FROM A MAINIFOLD
SCARiFVTILL BOTTOM SURFACE AND CONNECTING EACH CHAMBER ROW. CUSTOM PERFORATED PIPE TO BE LAiL) ON TOP OF 4 MiM SUITABLE BACKFILL OR
EXCAVATION SIDE WALLS THE SAND LAYER WITH ORIFICES ORIENTED UPWARD EXCEPT THE FIRST AND LAST ORIFICES CLASS 6 ROAD BASE
TO BE ORIENTED DOWNWARD. INSTALL A 4" VERTICAL INSPECTION RISER FROM THE' ` 4'I t+
MOLDED CUTOUT ON THE LAST CHAMBER IN EACH ROW. INSTALL A BALL VALVE AT THE
END OF THE DISTRIBUTION LINE ACCE551BLE FROM THE INSPECTION PORT TO ALLOW COMPACTED SUBG RACE
FLUSHING OF THE LINE. THE VALVE 55 CLOSED FOR NORMAL OPERATION.
PRESSURE DOSED INTERMITTENT SAND FILTER SESTEff DR-35.26 OR SCHD I4❑ PIPES
T.+ir7,mrr rrrA 1.rn rn C--'I nn A rr car rr .Orr nc'v N.T.S.
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PER
(RAVEL
DRIVEWAY
GENERAL NOTES:
OWTS SYSTEM NOTES
1. THE OWTS AS SHOWN ON THE PLAN AND THE DETAILS WERE DESIGNED BY SOPRIS ENGINEERING.
1.
ALL MATERIALS AND INSTALLATION SHALL CONFORM TO STATE AND COUNTY ONSITE
WASTEWATER TREATMENT SYSTEM (OWTS) REGULATIONS.
2. THE PROPOSED LOT CONDITIONS BY OWNER.
2,
IT 15 THE RESPONSIBILITY OF THE CONTRACTOR TO CONTACT ALL UTILITY COMPANIES FOR
3. THE EX15iTNG LOT CONDITIONS PER COUNTY G15 DATA BASE, AERIAL MAPPING AND 5URVEY
FIELD LOCATIONS OF UTILITIES PRiOR TO CONSTRUCTION AND EXCAVATION.
INFORMATION FROM LiLC, BY TUTTLE SURVEY SERVICES 7-8-20.
3,
ALL SEWER LINES TO BE SDR-35 BEDDED IN CLASS 6, 5DR-26 BEDDED IN SCREENED NATIVE
4, PROJECT TITLE: 17352 HiGHWAY82 PROFESSIONAL OFFICE
OR SCHEDULE 40 P.V.C. PIPE BEDDED IN SCREENED NATIVE MATERIAL UNLESS NOTED
OTHERWISE.
5. PRIMARY OWNER NAME & ADDRESS: RFLAS'DCO LLC
402 PARK AVENUE, UNIT
4,
INSTALL A TWO-WAY CLEAN OUT ON THE SERVICE LINE FROM THE HOUSE,
BASALT C Q 81621
5.
THE CONTRACTOR SHALL ENSURE ALL SEWER LINES AND SEPTIC TANKS ARE WATERTIGHT.
6. LEGAL SUMMARY: Section: 32 Township: 7 Range: 87 A TR IN LOT 18. 2.91 ACRES
ANY POTENTIAL PLUMBING LEAKS SHALL BE REPAIRED TO AVOiD EXCE551VE WATER
ENTERING THE SEPTIC SYSTEM.
7. SITE ADDRES5: 17352 82 HWY, CARBONDALE, CO 81623
6.
THE SEPTIC TANK SHALL BE INSTALLED LEVEL ON COMPACTED EARTH. INSTALL WATERTIGHT
S. PARCEL NUMBER: 2391-321-00-043
RiSERS AS NECESSARY TO BRiNG ALL REQUIRED ACCESS POINTS TO THE FINISHED SURFACE
GRADE.
9. NEW GARFIELD COUNTY OWTS PERMIT #:SEPT-6625, ISSUED 01-07-21, FiNAL ACCEPTANCE LETTER,
3/25/2021
7.
A SANITARY BAFFLE TEE 15 REQUIRED ON THE SEPTIC TANK INLET AND OUTLET. INSTALL THE
INLET AND OUTLET TEES PLUMB AND iN A POSITION TO ALLOW EASY INSPECTION AND
10. CONTRACTOR: TIMBERLINE EXCAVATION MAINTENANCE OF TANK FROM THE TANK RISERS.
S. AN EFFLUENT FILTER IS REQUIRED. INSTALL A 4" EFFLUENT FILTER WITH THE TANK OUTLET
17352 Highway 82 Professional Office, Garfield County, CO Remodel Residential units, SANITARY TEE OF THE SEPTIC TANK OR APPROPRIATE FILTER SYSTEM WITH A DISCHARGE
Office,GarfieldPUMP ASSEMBLY. THE GRAVITY OR PUMP SYSTEM FILTER SHOULD BE INSPECTED EVERY SIX
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17352E WASTEWATER TREATMENTtonal
MS (OWTS) MONTHS. THE EFFLUENT FILTER SHALL BE MAINTAINED AND CLEANED WHEN THE TANK 1S
Job No. 30201.01 Parcel No. 2391-321-00-043 PERIODICALLY PUMPED OR AS NECESSARY. INSTALL A SUITABLE EXTENSION ON THE FILTER
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WITH A HANDLE TO BE WiTHIN 6" BELOW THE ACCESS LID.
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Design Calcuiations OWTS
9. THE TREATMENT BED MUST BE MARKED AND PROTECTED TO PREVENT DAMAGE FROM
The existing residential 5trMtUre has 4 bedroams and detached garage structure that can be considered
d VEHICULAR AND LIVESTOCK TRAFFIC. THE BED SURFACE MUST BE SODDED OR
for use as a 1-bedroom ADU. In order to ensure adequate OWTS capacity for existing usage and potential RE -VEGETATED WITH GROUND COVER.THE TREATMENT FULD SURFACE MUST BE CROWNED
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future usage the new replacement system is designed for for the maximum design flow under anticipated TO DIVERT SURFACE DRAINAGE AWAY FROM THE BED.
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re -development scenarios. The residential facility design assumes a 4-bedroom single family residence
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plus a 1-bedroom detached ADU. From County adopted State Regulation 43: 10. THE DIMENSIONS SHOWN ON THE PLAN INDICATE MINIMUM AREA AND SEPARATION
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DISTANCES FOR THE OWS COMPONENTS. THE BED SHALL BE LEVEL WiTH DISTRIBUTION
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Design Flow Criteria: Minimum population based on 2 person per bedroom for the first 3 bedrooms = 6 PIPES IN5TALLED FOR EQUAL PRESSURE DISTRIBUTION.
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persons and 1 person per bedroom for each additional bedrooms = 4 bedroom residence for a total of 7
persons. 75 gal/person/day, 11. THE TREATMENT BED SHALL BE CONSTRUCTED WiTH CHAMBER UNITS PLACED OVER THE
Max. Design flow (Ciftallons/day= (4 of people) x (avg. flow)gal/person/day. 5PECIFIED SAND LAYER FOR USE A5 SPRAY SHEILDS. THE CHAMBERS, 5AND AND
Design flow Qd1 Main house Residential: 7 persons L& 75 gpd = 7 x 75 = 525 gpd DISTRIBUTION PIPES SHALL BE COVERED WITH FILTER FABRIC TO THE SIDES OF THE
Design fiow Qd2 ADU a Residential: 2 persons @ 75 gpd = 2 x 75 = 150 gpd EXCAVATION.
Design flow Qd = Qd1 + Qd2 = 525 + 150 = 675 gpd 11 THE MINIMUM COVER OVER THE TOP OF THE CHAMBER SPRAY SHIELD UNiTS SHALL BE 12
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INCHES NOT TO EXCEED 18".
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Septic Tank Design: 2-Day detention time = 675 x 2 = 1350 gallons required.
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Use a 1,500 gallon, three -compartment septic rank with a bio-tube dosing assembly in the third chamber. 13. THE BED CHAMBERS WILL BE BACKFILLED TO THE SURFACE WITH EXCAVATED MATERIAL
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VOID OF ROCKS. THE BACKFILL MATERIAL SHALL NOT EXCEED 3" DIAMETER. A MiNIMUM 4"
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Sub Surface Conditions and Testing: DEPTH OF TOPSOIL iS TO BE PLACED ABOVE THE BACKFILL TO THE FINISH SURFACE GRADE.
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Subsurface soil investigations and USDA soil texture method tests were performed by 5opris Engineering 14. BALL VALVES (SIZE PER PLAN) SHALL BE INSTALLED ON THE TERMINAL ENDS OF THE
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on November 27, 2020, The soils in the area of the proposed absorption field were sampled and PERFORATED DISTRIBUTION PIPE LUST BELOW THE 4" INSPECTION PORTS.
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characterized by application of the USDA soil texture method test. The soils were tested to determine the 15 ALL INSTALLATION OF THE CHAMBER UNiTS SHALL BE IN CONFORMANCE WITH THE.
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presence of any limiting soil or hydrological conditions, appropriate hydraulic ioading rate, absorptive
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MANUFACTURES INSTALLATION INSTRUCTIONS
surface levei capacity and to assess appropriate treatment ievel design for the in -situ native soils. The
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soils below nil to 3 inches of topsoil consist of medium dense gravelly sandy loam to sandy silt loam with THE ABSORPTION FIELD SHALL 8E INSTALLED PER THE REQUIRED SETBACK DISTANCES:
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cobbles material to 0.3 to 5 feet below the surface. The soils become increasingly rocky with depth and 10 feet from any property line.
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appear to be consistent across the site. 25 feet from any potabie water supply line -
The native sails sampled from 1-2 feet below the surface are characterized as a soil type 2 sail consisting 20 feet from any occupied dwelling+
?DO feet from any well, spring or cistern.
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of sandy gravelly slit Loam texture with moderate granular structure. This soil has an effective loading rate
feet from drainage Swale or ditches
for conventionai soil treatment of 0.6 Gal/S.F./day for a level 1 conventional treatment system. Soils
below 2 feet are increasingly rocky and are characterized as Type R1 soils with rock content greater than DISTRIBUTION SYSTEM NOTES:
35% and less than 65% with 50% of the rock content size less than 3/4 inch. The rocky soiis at depth have
an effective loading rate for of 0.8 Gal/S.F./day for a level 1 treatment system. Due to limited area and ?• EFFLUENT FROM THE SECONDARY SEPTIC TANK COMPARTMENT WILL FLOW TO THE
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to provide optimal treatment an intermittent sand filter is recommended to provide for a treatment level THIRD COMPARTMENT THAT BL A BTUBE DOLING BASIN WITH A SIMPLE}( HIGH
TL3 sand filter system. No free water was encountered in excavations observed on site. Norma! HEAD EFFLUENT PUMP ASSEMBLY. EFFLUENT WILL BE EQUALLY DISTRIBUTED TO THE
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Groundwater levels are expected to be below 10 feet from the existing surface grades. The soils are TREATMENT BED VIA THE 5PEGFIED INDIVIDUAL TRANSPORT LiNE TO THE PRESSURE
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suitable for the installation of a sand filter treatment bed system consisting of a minimum 24" depth of MANIFOLD AT THE HEAD OF THE BED. (SEE PLAN CALLOUTS NOTES)
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secondary sand Media that wHi be fully pressure dosed meeting the requirments under sections 2. THE SPECIFIED CUSTOM PERFORATED PRE55URE DISTRIBUTION LATERALS PIPES WiLL BE
03.10,C,0,E,F&H and 43,11.C), INSTALLED BELOW THE CENTER OF THE SPRAY SHEILD CHAMBER ROWS ON THE SAND
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Additional soil evaluation wiii be performed during construction to verify the sails in the entire fieid LAYER SURFACE. THE DISTRIBUTION LATERALS WILL HAVE SELECT DIAMETER ORIFICES
excavation. DRILLED AS SPECIFIED AT EQUAL INCREMENTS ALONG THE PIPE. (SEE PLAN CALLOUTS)
Intermittent Sand Filter Treatment Unit/ Absorption System Design: 3. THE DISTRIBUTION SYSTEM SHALL DISTRIBUTE FLOW EVENLY ACROSS THE INTERMITTENT
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SAND FILTER BED. THE MINIMUM SLOPE OF THE TRANSPORT PIPE FROM THE DOSING
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The treatment/absorption field is designed based art utilizing the effective Long Term Acceptance Rate TANK TO THE PRESSURE MANIFOLD SHALL SHALL BE A MiNIMUM 2.5% TO ALLOW FOR
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{LIAR) for an intermittent sand filter treatment system utilizing pressure dosed distribution laterals and DRAIN BACK. ALL DISTRIBUTION PIPING, CONNECTIONS AND FITTINGS SHALL BE
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graveness chamber units as spray shields.. The new treatment system will consist of a fully pressure dosed WATERTIGHT AND INSTALLED TO iNSURE EQUAL DISTRIBUTION THROUGH THE SYSTEM.
sand filter Treatment bed System with a 24-inch layer of filter sand {A5TM-33, "washed A5TM-33
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Concrete sand"). ELECTRICAL NOTES
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Long Term Acceptance Rate (LIAR) 1. AN ORENCO SYSTEMS CONTROL PANEL SHALL BE INSTALLED BYA QUALIFIED INSTALLER
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Considering the application of the new state regulation 43: INCOORDINATION WITH THE ELECTRICIAN, A 310 VOLT ELECTRIC SERVICE 15 ADEQUATE
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Receiving septic tank effluent, the treatment level for intermittent sand filters is considered TL3 for the FOR THE PUMP SYSTEM. THE POWER SUPPLY FOR THE PUMPS AND CONTROLS SHALL
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minimum 24" depth of treatment media with the upper infiltrative surface being at least 4-feet above a CONSIST OF (1) 20 AMP DOUBLE POLE CIRCUIT FOR EACH PUMP AND 10 AMP SINGLE
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limiting layer; POLE CIRCUITS FOR CONTROLS. PANELS TO BE INSTALLED IN LINE OFSITE WITH TANK
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Maximum hydraulic loading rate for TL1 effluent applied to "Secondary Sand Media" in an unlined sand AND/OR PUMP BASINS.
filter is 0.8 gal./sq.ft./day, or the long term acceptance rate of the receiving soil Type 2 R-1 for TL3 (1.1 2. THE CONTRACTOR SHALL INSTALL ELECTRICAL SUPPLY WIRE IN CONDUIT FROM THE
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gal./S.F./day) (Table 10-1 &10-1A) whichever results in the larger area. SERVICE PANEL TO THE WALL MOUNTED CONTROL PANEL.
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The maximum Loading rate is therefore 0.8 gal./sq.ft./day
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Loading factors; (Table 10-2, pressure dosed application bed = 1.0) 3, THE SYSTEM QUALIFIED INSTALLER SHALL INSTALL ELECTRICAL DIRECT BURY WIRES OR
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WIRES iN CONDUIT FROM THE CONTROL PANEL(S) TO THE DISCHARGE PUMP
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A(sf) = Qd x LF1 = A = Area; ASSEMBLY'S EXTERNAL SPICE BOX ON THE RESPECTIVE RISER OVER THE TANK PUMP
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LTAR LTAR = 0.8 Gal/S.F./day for secondary sand, ASTM-33, " Concrete sand" BASINS. INSTALL CODED WIRES PER CONTROL PANEL DIAGRAM. INSTALL ALL WIRES FOR
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Qd = flow (gai/day) = 675 gpd PUMP AND CONTROLS WITH CONDUIT SEAL AT SPLICE BOX. ELECTRICIAN TO
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LF1=1.0 pressure dosing COORDINATE W/SYSTEM INSTALLER. INSTALLATION CONSULTATION BY VALLEY
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PRECAST, INC.
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A(sf) = 675 gpd x 1.0 = 843,75 S.F.
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Excavate a single 70.5' by 12' bed to a maximum 3.5' depth below finish grade. Backfill with 24-inches of
ASTM-33, concrete sand. Install 3 rows of custom perforated 1.25-inch distribution laterals on top of sand
layer in the bed and cover with 16 Quick-4 chambers per row for use as pressure dose spray shields, as
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1500 Gallon Top Seam Throe Compartment
with High Head Pump
'1-50IM- iCP-M 42000 Gal Wm T&W Yolm■ )
DEFAGN
. per pa formance test per ASiAt CbWA1W8kf Ii
c1227 -
. Top surface Area $7.75 ft' ,I ,
Fc O 28 days concrete = 8,000 PSI _ - -
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InalarakkoTMK II ii i'
• Tank to
to be sat m 5• min- sand
bed or pea grovel
Tmk to be bockfYled uniformly
oil aides in lifts Ilse thon 24" and 4--,-. _+ -,;--T _--.-J4-- Y,., L_._ ••
mechankdiy comported
• Ercarotcd mutw;d may bo ueed for T.o.p. yw�� AAlrtirMrn
back All, pravld■d large stonesn
removed ■sue oR
■ Ellcovatlon should be dewat•red and
tank filled with water prim to being wl�
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put In souks for klstdiation with y
water tape lolls Nan 2' below grade
■ rleets Ct644-06 for resWent -
connectars - - - �'• - - - -
■ Inlet and Outlet kmntlried above pipe
• I�ellvore0 CaRlpiete wktn Intwnol plpinq
■ Secondary safety screen awpable with -
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Digging specs Invert Mmensions Not Capocity Net weight
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15' Loeg x 8' wide We putlel Length e9oth Relght Inlet Slde Piddle Outlet Total Lie Teak Total
56` bole. Inlet 58- 73` T62 78- W 1016 gal 505 gal 507 gal 2WS qo1 5420 Ibe 16240 Ms 211980 ms
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ALLOWABLE BURY
(Etoso(l on Water Table]
WATER TABLE
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DATE: DEC 31, 2021
JOB NO. 30201.01
SHEET C2
GA202Dj30201-ALBRIGHT\CIVIL\CIVIL DWGS\DE\30201-DE-0WTS PLAN.DWG- Mar 31, 2021-12:08prn