HomeMy WebLinkAboutAs-Built DesignsTHIELE OWTS UPGRADE DESIGN CALCULATION GENERAL NOTES:
1. THE OWTS A5 SHOWN ON THE PLAN AND DETAILS WERE DESIGNED BY SOPRIS ENGINEERING.
Flow Design 2. THE PROPOSED LOT CONDITIONS BY SOPRIS ENGINEERING AND OWNERS.
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3. THE EXISITNG LOT CONDITIONS PER COUNTY GI5 DATA BASE, AERIAL MAPPING, LIDAR TOPOGRAPHY
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1 The design flow is calculated as follows for the minimum design capacity of an equivalent 4. PRIMARY OWNER NAME & ADDRESS: HUBER, JEFFREY K & WORTHEN, ANGELA F AND SURVEY INFORMATION BY HIGH COUNTRY ENGINEERING.
4-bedroom residential dwelling. The OWTS is designed for a treatment capacity of 525 gallons 524 259 COUNTY RD, SILT CO
day based on the design wastewater flow in accordance with Table 10-1 values, Section 5. LEGAL SUMMARY: AKA ROLLING MEADOWS Lot: TR G
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43.6, A.4. Regulation 43: 6. SITE ADDRESS: 524 259 COUNTY RD, SILT CO
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7. PARCELNUMBER: 212734200159
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Minimum population based on 3 bedrooms at 2 persons per bedroom and a fourth bedroom 8. PREVIOUS COUNTY ISDS PERMIT #: 1892, Issued 9-9-91
at 1 person per each additional bedroom, equating to 7 persons. 9. CONTRACTOR: SACRED GROUND EXCAVATION, LLC
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\ f 10. NEW GARFIELD COUNTY PERMIT #: SEPT-7421 ISSUED 04 25-22
The Design flow is calculated based on residential usage of 75 gal/person/day, No PF 11. WATER SUPPLY: DOMESTIC WELL CDWR PERM IT# 39336-F
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Max. Design flow (Qd)gallons/day = [# of people) x (avg. flow)gal/person/day.
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Design flaw Qd = 7*75-525 gpd
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j Sub Surface Conditions and Testingt�
ONAL
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A site specific subsurface soil evaluation was performed by Sopris Engineering, March 23,
2022, in the vicinity of the proposed OWTS field. Two profile pits were excavated, by backhoe,
i f S to a depth of 7-8 feet in the vicinity of the proposed soil treatment area (STA). The soils
encountered in open pit excavations were sampled and characterized by application of the
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USDA soil texture method test. The soils were tested to determine the presence of any
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\ - limiting soil or hydrological conditions, assess appropriate hydraulic loading rate, range of
\ \ INSTALLED CHAMBER END , I / absorptive surface levels and to assess appropriate treatment level design alternatives for
\ CAP l } installation of treatment/absorption systems the in -situ native sails. The soils below 12 inches
ON ALL END CHAMBERS ` of topsoil consist of medium dense silt loam from 1.0 to 7 feet below the surface.
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\ \ INSTALLED 4" RISER PIPE INSPECTION PORT EXTEND RISER W/' ` ` ` ` ` The native soils from 2 to 3 feet below the surface are characterized as a soil type 2 consisting
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\ BELOW FINISH GRADE &COVER WITH 6" ` f of sandy silt loam texture of granular with rock content less than 35%. The tactile soil test
PUSH ON CAP MIN. 4" �
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\ DIA. VALVE BOX SET WITH LID 1" ABOVE FINSH GRADE ' w '' ribbons were approximately 1 inch long. the soils below 4 feet contained increased fine sand
\ EXSITING SUSPECT LEACH LINE LATERALS
\ (TYP. EACH TRENCH CHAMBER END CAP) r w �,a and were denser with slightly granular to massive weak structure to depths of 7-8 feet. The
WERE SEVERED & ABONDONED IN PLACE
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I \ s ' type 2 sail has an effective loading rate for conventional soil treatment of 0.5 to 0.6
EXCAVATION DEPTH 1' MIN.-4' MAX. BELOW SURFACE Gal/S.F./day for a level 1 conventional treatment system. The equivalent percolation rate is
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GRADE MINIMUM. 12" COVER OVER TOP OF CHAMBERS 26-40 minutes per inch. No free water or other limiting conditions were encountered or
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FILL & GRADE FIELD AREA APPROXIMATELY 3"-6" ABOVE 1 tsp 1 observed in the profile pit excavations on site. Groundwater levels are expected to be below
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1 - EXISTING SURFACE GRADES `
t 12 feet from the existing surface grades.
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2" PVC DISTRIBUTION PIPES (TYP.) 42' ,{ PROFILE PIT (3-23-22) f Soil Treatment Unit/Absorption System Design
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TPORT CONCRETE DISTRIBUTION BOX WITH BAFFLE - f
f INSTALLED LEVEL ON COMPACTED BASE \` The treatment/absorption field is designed based on utilizing the effective Long Term
INSTALL RISERS AND LID TO SURFACE
-.� EXISTING{ Acceptance Rate (LIAR) for the native soils and the application of appropriate loading factors
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SHED j for a soil treatment unit system utilizing gravity distribution to gravelless chamber trenches.
1 I 4" PVC EFFLUENT PIPE @) MIN. 1 %, � \ • I
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} 1 ` USE SCHD-40 OR SDR-35 \ The new treatment system and absorption field will consist of gravity distribution of septic
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} \ tank effluent via a distribution box to individual chamber trenches with treatment across the
\ ` ` ABSORPTION/TREATMENT FIELD (4-BEDROOM CAPACITY)
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1 native soil absorptive surface.
j INSTALLED 56 QUICK-4 CHAMBERS IN 2 TRENCHES WITH 10 CHAMBERS & 4 TRENCHES
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\ 1 INSTALLED 5DD/540 GALLON 1-COMPARTMENT CONC/PLASTIC SEPTIC TANK �1.. WITH 9 CHAMBERS PER ROW FOR ATOTALABSORPTION AREA OF 661.5 S.F. THE SYSTEM
r Long Term Acceptance Rate [LTAR]
s SHALL BE PLUMBED FOR EQUAL GRAVITY DISTRIBUTION. THE CHAMBERS SHALL BE
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W/SEALED RIBBED PVC RISER & FIBER LID INSTALLED AT FINISH GRADE. sp 5�
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i INSTALL DOSING SIPHON ASSEMBLY W/COUNTER (USE HD 207 SIPHON) 7" INSTALLED ON LEVEL GRADE IN EACH TRENCH. THE BOTTOM OF EACH TRENCH TO BE
` 1 a °N° Considering the application of the state regulation 43:
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DRAWDOWN, 95 GALLON DISCHARGE, W/ 2" OUTLET TO 4" DISCHARGE , EXCAVATED TO A MAXIMUM AVERAGE DEPTH OF 36 INCHES BELOW THE EXISTING
PIPE. DEPTH TO TOP OF TANK FROM PROPOSED GRADE IS APPROX. 30". .. SURFACE GRADES, WITHIN THE UPPER HORIZON OF THE NATIVE SANDY SILT LOAM SOILS Receiving Wastewater Treatment Level 1;
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1 PP-2 & BACKFILLED WITH A MINIMUM 12-INCHES OF COVER OVER THE CHAMBERS. THE LTAR; [Table 10-1 Soil type 2a loading rate for a silt loam is [0.5 gal./S.F./day); );
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4" PVC EFFLUENT PIPE @ MIN. 1 R6, `� � FINISH GRADE ACROSS THE FIELDS SHALL BE SLIGHTLY MOUNDED A MINIMUM 3-INCHES
� w Design Flow; Qd =flow [gal/day] = 525 gpd
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USE SCHD-40 OR SDR-35 1 ` sa s a w ABOVE EXISTING ADJACENT GRADES. Loading factors; (Table 10-2, Dosed Siphon application trenches, L.F.1 = 0.9 ]
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(Table 10-3, Gravelless chambers, L.F.2 = 0.7)
STU treatment A = Area S.F.;
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�-- absorption area;
ENT PIPE PIPING TO
INSTALLED NEW OUTLET EFFLUENT � 1 `4 I
DOSING TANK INLET
, A(sf) = Qd x L.F.1 x L.F.2 .: A(sf) = 525 gpd x 0.9 x 0.7 = 661.5 S.F.
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} EXISTING INSTALLED NEW ORENCEO EFFLUENT LTAR 0.5 Gal/S.F./day
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I f GARAGE/BARN FILTER yX PROFILE PIT (3-23-22)
� 1 Number of Quick-4 Infiltrator chambers 4'x3'x12"chambers:
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i j l 1 INSTALLED NEW 24" DIA BY 48" TALL RIBBED PVC ` ( `� 4, 661.5 S.F. = 56 chambers; Use 56 chambers
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RISERS WITH BOLT DOWN KIT & FIBER LIDS (TYP) } �� `� 1 12 S.F./Chamber
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INSTALLED NEW 1500-GALLON SEPTIC TANK ; ,�` ` y Number of Equivalent Arc chambers 5'x3'x12"chambers:
J 1 y \ 661.5 S.F. = 44.4 chambers; Use 42 chambers
15S.F./Chamber
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Use 56 Quick-4 Infiltrator chambers in 4 trenches 34' long by Y wide with 9 chambers units
and 2 trenches 38' long by 3' wide with 10 chambers units per trench plus two end caps as
CQWR PERMIT #39336-F EX WELL 200'+ TO SOUTHEAST delineated on the plan. Alternative use 42 Arc chambers in 4 trenches 35' long by 3' wide with
2 long by 3' 8
chambers units per trench with
fEX PATIO S� 1 7 chambers units and trenches 40' wide with
} GRAPHIC SCALE ends caps. The septic tank effluent will be equally distributed to the head of each chamber
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1 } + • individual distribution from 6-port distribution box.
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4 row via pipes a
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EXISTING 3-BEDROOM HOUSE l` 1
DISTRIBUTION SYSMM NOTES:
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1. FILTERED SEPTIC TANK EFFLUENT WILL DISCHARGE TO A 500 TO 540 GALLON DOSING TANK 1 Inch = 2Q ft.
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EQUIPPED W/ SIPHON DOSING A55EMBLY(S), WITH RISERS AND LID AT THE SURFACE. THE
DOSING SIPHON 2" DISCHARGE ASSEMBLY WILL CONNECT TO A 4" DISCHARGE PIPE ROUTED
TO THE INLET OF THE DISTRIBUTION BOX.
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1 2. THE DISTRIBUTION SYSTEM WILL BE INSTALLED TO ALLOW FOR EFFLUENTTO BE EQUALLY
1 AL1'ERNG�TIVE O$ OliTB COl[POEItITS: DISTRIBUTED TO THE TRENCHES VIA INDIVIDUAL 2" DISTRIBUTION LINES FROM THE
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DISTRIBUTION BOX CONNECTED TO THE HEAD OF EACH TRENCH.
? 1S INSTILLED A I 'NEW 150 GALLON 2-CP PLASTIC SEPTIC TANK W/ �4" R ERS �IND L4D.
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3. THE MINIMUM SLOPE OF THE DISCHARGE LINE FROM THE DOSING TANK TO THE
DISTRIBUTION BOX SHALL SHALL BE INSTALLED ATA MINIMUM 1%SLOPE. THE INDIVIDUAL
DISTRIBUTION LINES ATTHE DISTRIBUTION BOX TO THE HEAD OF EACH TRENCH SHALL BE
INSTALLED AT A MINIMUM OF 0.5%SLOPE.
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DISTRIBUTION BOX LID
AT GROUND SURFACE
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CONNECT INDIVIDUAL 4'' DISTRIBUTION PIPE RISER SECTION
NATIVE, YARD OR TO HEAD OF EACH CHAMBER TRENCH (TYPICAL EACH TRENCH).
LANDSCAPED SURFACE INSTALL CONNECTION AS NEEDED FROM END OR SIDE INLET BAFFLE
PORT OF EACH INFILTRATOR CHAMBER END CAP. 4" DISTRIBUTION GRAVITY LINE
FROM SEPTIC TANK
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200 Series Fluid amic N' \ CHAMBER END CAP 000
4" SOLID PVC GRAVITY
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Dosing Siphon DISTRIBUTION PIPES(TYP.)
6" MIN. EXCAVATED MATERIAL COMPACTED TO ABSORPTION FEILD INVERT IN
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(Olney Available In Poly Tanks) TO 90% STANDARD PROCTOR
8" AGGREGATE BASE
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COMPACTED 5U8GRADE COURSE
leer to Gtade 4" MIN. I
SUITABLE BACKFILL OR
CHAMBER END CAP CONNECTION DETAIL DISTRIBUTION BOX DETAIL
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CLASS 6 ROAD BASE
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COMPACTED SUBGRADE
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FLUID DYNAMICS � � � � , '; � � TRENCH CROSS-SECTION FOR
DOSING SIPHONw=1 DIVERT SURFACE WATER
todels Al�le {, r _' SD -35.26 OR SGHD-40 PIPES
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EXTEND 4 RISER PIPE BACKFILL WITH SCREENED TOPSOIL LAYF
11111N. 3" THROUGH END ONSITE SOILS FREE OF ROCKS IN EXCESS
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Float CAP OR CHAMBER PRE OF 3" DIAMETER I 12"-3fi"
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FORMED PENETRATION�/ _
'2" Pipe to COUNTY GIS AERIAL PROPERTY MAP 6" VALVE BOX 5" VALVE BOX SECURE WITH SCREWS I
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N.T.S. THROUGH PENETRATION �� f
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LEACHING i\ 12'' LENCTA-177"
CHAMBER \ THREADERACCESS HCRROhr-AL STRi CILRAL THREADED ACCESS
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BACKFILL LAYER NATURAL ONSITE
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2VI.O.DtA. (FULL CFRCIJMFERENCE) a4'I.D-DVI.
4" INSPECTION PART RISER
DOWg Imft 11e11Cn • Valley Precast, Inc. "off" SOILS FREE OF ROCKS
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In pdy tanks 4" EFFLUENT PIPE FROM I UNDISTURBED EARTH 6" INM1I IN. 42'LIOEIIDLEVEL INVOUr
��� � DeM - � GY�GIIM requD+Bd � Steha Reg DISTRIBUTION BOX ' `:' SILTY LOAM SOIL. I = [SEELOCAL REGS.j -
r� SCARIFY BOTTOM SURFACE AND PLACE
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Mod412+B 11rD .-21$GekrN CHAMBERS AT LEVEL GRADE. P�ni1oN waa.L �
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f NOTE: ALL CHAMBERS IN EACH TRENCH MUST BE INSTALLED ON LEVEL = SEELOCALREM-
POROPENING
GRADE OVER LEVEL SCARIFIED SURFACE. REgL11REMENT
MAXIMUM DEPTH OF TRENCHES NOT TO EXCEED 36" BELOW PROPOSED ft rk t% rt 1% rI- r% ry rt rL L A IN PAL
`rA * * �1 Rhone: 7f9ti3S'F87bt QUICK-4 INFILTRATOR FINISH SURFACE GRADES. INLET AND END CAPS ARE TO BE INSTALLED ON
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f0 pRECA"' Inc. Jb: wmw.�oarn QUICK-4 INFILTRATOR OR EQUAL BiO DIFFI)SER EACH END CHAMBER ROW. IF EXCESSIVE LARGE COBBLES OR BOULDERS ARE
CHAMBER ENCOUNTERED IN ANY PART OF THE EXCAVATION, OVER EXCAVATE AND 42" LIRUIo LEVEL ® SECTION
Buena Vista,��� Epp; FIND CAP
BACKFILL WITH SAND OR SUITABLE SCREENED NATIVE SOILS. w� t„.,
ROTH MultiTanKb
DATE. 05-6-22
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INSPECTION FORT CONNECTION DETAIL =��,��•;: ,'' T staa GALLON I MODEL RMT-1sa0
DOSING TANK/SIPHON DETAIL CHAMBER TRENCH CROSS SECTION DETAIL
JOB NO. 31260
SHEET C1
N.T.S. N.T.S. N.T.S. G:A2021A31260-HUBERAAS-BUILTSA3126D-AC-OVWTSPLAN. DWG- May06,2022-2:03pm