HomeMy WebLinkAboutOWTS Drawings10.0' SETBACK
305.0
17.0'
58.0'
50.0' DITCH SETBACK
18.0'
48.5'
1.5 ''1 .5''1.5''
1 .5''1.5''1.5''
1.5 ''1.5''1.5''
5303
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5305
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ETC
ETC
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ET C
Top Back of Curb
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OE OE OE OE OE OE
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S 88°23'29" E 395.84'
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Sign
Lot 4
184 Gas Court
Water Valve &
Utility Stub on Concrete
C
1
C2
C3
C5
C 6 C7
Concrete
Gravel
12" CMP
Dilapida ted Retaining Wall
21.4'
32.0'
O ffi c e
S t e e l P o l e B u il d i n g
(O p e n F r o n t)
280.4'
32.0'
24.5'Spigot
4" PVC's
81.5'
19.5'Rip Rap
Rebar and Plastic Cap
LS No. 31944
Top of Ban k (Ditch)
co
Edge of Gravel
Trash
Concrete
Pan
Rock Swale
Rebar and Plastic Cap
LS No. 31944
Rebar and Plastic Cap
LS No. 38200
10.0' Ditch Easement
5.0' Utility Easement
5.0' Utility Easement
24.7'
C4
Overhead Electric
Ed
ge of Gravel
Water Meter/Service
Concrete
5.0'
C8
INSTALLED 4" SCHD-40 PVC SEWER PIPE @ MIN. 1.5 %
4" SCHD-40 PVC SEWER PIPE @ 1.5%,
INSTALLED CHAMBER END CAPS WITH INSPECTON
PORTS ON ALL CHAMBER TRENCH ENDS
4" TWO-WAY
CLEANOUT 4" TWO-WAY
CLEANOUT 4" TWO-WAY
CLEANOUT 4" TWO-WAY
CLEANOUT
4" TWO-WAY
CLEANOUT
INSTALLED 4" INSPECTION PORT RISER PIPE FROM END CAP IP
FLANGE TO APPROXIMATELY MIN. 3" BELOW FINISH GRADE W/
PUSH ON CAP. IP & BALL VALVE COVERED WITH 10" DIA. VALVE
BOX SET WITH LID 1" ABOVE FINISH GRADE
(TYP. EACH CHAMBER TRENCH DISTAL END CAP)
1.5" SCHD-40 TRANSPORT PIPE W/ 2.0' MIN. DEPTH OF BURY.
INSTALLED AT MIN. 2% FOR DRAINBACK
1 1/2" PVC SCHD-40 PERFORATED PIPE DISTRIBUTION LATERALS
W/ 3/16-INCH DIA. ORIFICES ON 2' CENTERS ALONG PIPE. (TYP.)
ORIFICES ORIENTED UPWARD BETWEEN FIRST AND LAST.
SOIL TREATMENT AREA FIELD (270 GPD CAPACITY)
USED 42 QUICK-4 CHAMBERS IN 3 TRENCHES WITH 14 CHAMBERS PER ROW FOR A TOTAL
ABSORPTION AREA OF 504 S.F. THE SYSTEM IS PLUMBED FOR EQUAL PRESSURE DISTRIBUTION.
THE CHAMBERS ARE INSTALLED ON LEVEL GRADE IN EACH TRENCH. THE BOTTOM OF EACH
TRENCH WAS EXCAVATED TO A MAXIMUM AVERAGE DEPTH OF 24 INCHES BELOW THE EXISTING
SURFACE GRADES, WITHIN THE UPPER HORIZON OF THE NATIVE SANDY CLAY LOAM SOILS &
BACKFILLED WITH A MINIMUM 12-INCHES OF COVER OVER THE CHAMBERS.
INSTALLED DEEP BURY, 2-COMPARTMENT 1000-GALLON CONCRETE
SEPTIC TANK W/ REINFORCED LID. INSTALLED WITH (1) 24" DIA. BY 60"
DEEP RIBBED PVC RISER & (1) 30" DIA. BY 60" DEEP RIBBED PVC RISER
W/ LIDS AT THE SURFACE. INSTALLED ORENCO SIMPLEX EFFLUENT
PUMP ASSEMBLY (ORENCO PF-5005) W/ 2" DISCHARGE ASSEMBLY.
DEPTH TO TOP OF TANK FROM FINISHED GRADE IS APPROX. 5'.
2" PVC DISTRIBUTION MANIFOLD (TYP.)
INSTALLED 1.5" FLUSH BALL VALVE FROM END OF EACH
DISTRIBUTION LATERAL EXTENDED VERTICALLY THROUGH
END CAP MIN. 3" BELOW FINISH GRADE ADJACENT TO
INSPECTION PORT (TYP. END EA. TRENCH)
EXCAVATION DEPTH 2' MIN.-3' MAX. BELOW SURFACE GRADE WITH
MINIMUM. 12" BACKFILL COVER OVER THE TOP OF CHAMBERS
TOP BACKFILL WITH MIN 3" TOPSOIL & GRADE FIELD SURFACE
AREA APPROXIMATELY 3"-6" ABOVE EXISTING SURFACE GRADES
OWTS EFFLUENT PUMP CONTROL PANEL (ORENCO MODEL S-1 W/ETM, CT)
INSTALLED BY ELECTRICIAN IN COORDINATION WITH PUMP SUPPLIER/INSTALLER.
EXTERNAL SP LICE BOX INSTAL LED WITH
ELECTRICAL/CONTROL W IRES FROM CON TROL PA NEL
4''SS 4''SS 4''SS 4''SS 4 ''SS 4''SS 4''SS 4''SS 4''SS 4 ''SS
INSTALLED 4" SCHD-40 FULL BODY WYES
(TYP. EACH SEWER PIPE CONNECTION)
4''
SS
4''S
S
4''SS
4''SS
4''
SS
4''
SS
4
''SS
4''
SS
4''SS
2''4 ''
S A
2''
DATE REVISION
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OWTS
AS-CONSTRUCTED
RECORD DRAWING
1 inch = ft.
( IN FEET )
GRAPHIC SCALE
010 10 10
20
1010
MEMBER UTILITIES
FOR THE MARKING OF UNDERGROUND
BEFORE YOU DIG, GRADE, OR EXCAVATE
CALL 2-BUSINESS DAYS IN ADVANCE
Know what's
R
36016.01JOB NO.
DATE:
DESIGNED BY
DRAWN BY
CHECKED BY
PER 08/03/26
WJB 07/24/26
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1.THE OWTS AS SHOWN ON THE PLAN AND THE DETAILS WERE DESIGNED BY SOPRIS ENGINEERING.
2.THE EXISITNG LOT CONDITIONS PER COUNTY GIS DATA BASE, AERIAL MAPPING, LIDAR TOPOGRAPHY.
PLAT INFORMATION SHOWN IS BASED ON A EXISTING CONDITIONS SURVEY BY SOPRIS ENGINEERING
DATED 12/02/2014. PROPOSED LOT CONDITIONS BY SOPRIS ENGINEERING.
3.PROPOSED STRUCTURES BY ALL DRAFT DESIGN SERVICES.
4.PRIMARY OWNER NAME AND ADDRESS: BIG LENNY'S STORAGE RIFLE LLC, 5458 MOUNT VERNON
PARKWAY, ATLANTA, GA 30327
5.SITE ADDRESS: 184 GAS COURT, RIFLE, CO, 81650
6.Legal Summary: SECTION: 18 TOWNSHIP: 6 RANGE: 93 SUBDIVISION: WEST RIFLE INDUSTRIAL PARK
LOT: 4
7.Parcel Number: 217718201004
8. COUNTY SEPTIC PERMIT #: SEPT-9731 (Issued: 03/27/2026 - Julia Lee)
9.CONTRACTOR: MYRL SERRA, 5mconst.llc@gamil.com
Commercial Design Calculations OWTS
The design flow was calculated as follows for a commercial shop/office facility onsite wastewater
treatment system (OWTS).
The treatment capacity is designed for an equivalent 9 shop/office facilities with an assumed 2
employees each.
From the Regulation 43 usage table :
Minimum population based on 9 offices = 18 staff employees.
Gallons per day per person =15 gal/employee/day,
Max. Design flow (Qd)gallons/day = (# of people) x (avg. flow)gal/person/day.
Design flow Qd = 18*15=270 gpd
Septic Tank Design:
Used a 1000 gallon, two compartment concrete septic tank with an inlet sanitary tee and biotube
effluent filter with a high head pump assembly in the second chamber. Effluent filter handle was
raised within 6" of access riser lid. The tank was installed with ribbed PVC risers and fiber lids or
sealed concrete risers and lids set to approximately 3" above the finish grade surface.
Sub Surface Conditions and Testing:
A subsurface soil investigation and site assessment was performed by Sopris Engineering in on
February 13, 2026. The soils were sampled and characterized by application of the USDA visual/tactile
soil texture method analysis from samples in two profile pits. Two excavated profile pits 1 & 2 were
observed in the East central portion of the site adjacent to the proposed soil treatment area field
location. The soils below 4 to 9 inches of mixed surface fill & gravels consist of medium dense sandy
clay loam with moderate granular to slightly blocky structure with some cobbles and gravels to depths
of 1.5 to 2.0 feet underlain by dense slighty sandy clay loam with less than 5% of total rock content to
the 8 foot depth explored in both pits. The soil appears to be generally consistent across the site. No
evidence of seasonal high ground water, redox conditions or any other limiting conditions were
observed in the profile pits. Groundwater levels are expected to be below 20 feet from the existing
surface grades on the relatively flat terrain. The soils are suitable for a shallow conventional
absorption field consisting of gravelless infiltration chamber units.
Profile Pit-1
The soils below approximately 4 inches of surface gravels consist of moderately dense sandy clay loam
texture fill material with gravels and cobbles that has blocky to granular shape of moderate structural
grade to a depth of 2-feet containing approximately 40% total rock content. Soils below 2 feet
underlying the mixed fill consist of dense slighty sandy clay loam texture soil that has granular to
massive structure of weak structural grade with less than 5% of total rock content to the 8 foot depth
explored. The soils are characterized as a soil type 3A Sandy clay loam. No free water or limiting
condition was encountered in the pit excavation.
Profile Pit-2
The soils below approximately 3 inches of surface gravels consist of moderately dense sandy clay loam
texture fill material with gravels and cobbles that has blocky to granular shape of moderate structural
grade to a depth of 1-foot containing approximately 40% total rock content. Soils below 1.5 feet
underlying the mixed fill consist of dense slighty sandy clay loam texture soil that has granular to
massive structure of weak structural grade with less than 5% of total rock content to the 8 foot depth
explored. The soils are characterized as a soil type 3A Sandy clay loam.No free water or limiting
condition was encountered in the pit excavation.
The native soils sampled from 2-4 feet below the surface, in both profile pits, are characterized as a
soil type 3A soil type consisting of slighty sandy clay loam texture soil with granular to massive
structure of weak structural grade. The tan to grayish sandy clay loam soil tactile test ribbons were 1
¾-inch long. Soil type 3A has an effective loading rate for conventional soil treatment of 0.30
gal/S.F./day for a level 1 conventional treatment system. The equivalent percolation rate of these
soils is assumed to be 61-75 minutes per inch.
Chamber Treatment Unit/ Absorption System Design
The treatment/absorption trenches were designed based on utilizing the effective Long Term
Acceptance Rate (LTAR) for native soils and the application of appropriate loading factors for a
treatment level-1 system utilizing pressure dosed chamber trenches. The new treatment system
consists of pressure dosed chamber trenches with custom perforated distribution laterals, in
accordance with Regulation 43 sections (43.10(C), 43.13.E.1.d, Table 10-2 and Table 10-3 as approved
by CDPHE for this technology.
Long Term Acceptance Rate (LTAR)
Receiving septic tank effluent, a treatment level-1 system for chambers requires the infiltrative
surface being at least 4-feet above a limiting layer (43.8, Table 7-2.4); Maximum hydraulic loading rate
for TL1 effluent is 0.3 gal./S.F./day) (Table 10-1) being the long term acceptance rate of the Type 3A
receiving soil.
A(sf) = Qd x L.F.1 x L.F.2 .: A = Area;
LTAR LTAR = 0.3 gal/S.F./day for sandy clay loam massive
Qd = flow (gal/day) for OWTS = 270 gpd
L.F.1=0.8 pressure dosed trench application
L.F.2=0.7 Gravelless chambers
STA Sizing: A(sf) = 270 gpd x 0.8 x 0.7 = 504 S.F.
0.3 Gal/S.F./day
Number of Quick-4 Infiltrator chambers 4'x3'x12"chambers:
504 S.F = 41 Infiltrator Quick-4 chambers; Use 42 chambers
12 S.F./Chamber
Number of Equivalent Arc-36 chambers 5'x3'x12"chambers:
504 S.F. = 33 chambers; Use 36 chambers
15 S.F./Chamber
Installed 42 Quick-4 Infiltrator chambers in 3 trenches 58' long by 3' wide with 14 chamber units per
trench plus two end caps as delineated on the plan. A 4" vertical inspection port riser was installed
from the molded penetration port on each chamber end cap or each end chamber in the trench.
YTN
08-03-26
YTN
TYPICAL YARD LANDSCAPED SURFACE
OR AGGREGATE PAVED SURFACE
6" MIN.
4" MIN.
4"
N.T.S.
4"NATIVE SCREENED
EXCAVATED MATERIAL
COMPACTED TO 90%
STANDARD PROCTOR
NOTE:
ALL CHAMBERS IN EACH TRENCH MUST BE INSTALLED ON LEVEL GRADE.
MAXIMUM DEPTH OF TRENCHES NOT TO EXCEED 36" BELOW PROPOSED
SURFACE GRADES. END CAPS TO BE INSTALLED ON EACH END CHAMBER.
INSTALL INDIVIDUAL CUSTOM PERFORATED DISTRIBUTION LATERALS ON TOP OF
THE NATIVE SOIL ABSORPTIVE SURFACE WITH ORIFICES ORIENTED UPWARD
EXCEPT THE FIRST AND LAST ORIFICES TO BE ORIENTED DOWNWARD. CONNECT
LATERALS AT THE HEAD OF EACH CHAMBER TRENCH FROM THE SPECIFIED
MANIFOLD ARRANGEMENT AS SHOWN ON THE PLAN. INSTALL A 4" VERTICAL
INSPECTION PORT RISER FROM THE MOLDED PENETRATION PORT ON EACH
CHAMBER END CAP OR EACH END CHAMBER IN THE TRENCH. INSTALL A BALL
VALVE AT THE TERMINAL END OF THE DISTRIBUTION LATERAL ACCESSIBLE FROM
THE INSPECTION PORT TO ALLOW FLUSHING OF THE PIPE.
NATIVE SOIL BACKFILL
SCARIFY BOTTOM SURFACE W/
FINAL PASS OF BUCKET TEETH
QUICK-4 INFILTRATOR
OR EQUAL ARC-36 CHAMBER
N.T.S.
EXISTING GRADE
FILTER FABRIC
NATIVE SOIL BACKFILL
SCREENED OF +3" ROCK
UNDISTURBED EARTH
SANDY SILT LOAM SOIL
CUSTOM PERFORATED DISTRIBUTION LATERAL
SECURE PIPE WITH PUSH IN STAPLES
SEED AND MULCH FINISH SURFACE
MAINTAIN SUITABLE VEGETATIVE COVER
CROWN FIELD TRENCH TO
DIVERT SURFACE WATER
1.5" SCHD-40 PVC
DISTRIBUTION MANIFOLD
CHAMBER UNIT INFILTRATOR
QUICK-4 OR ABS ARC-36 BIO DIFFUSER
SET 4" INSPECTION PORT RISER PIPE ON END CAP OR
END CHAMBER PRE FORMED PENETRATION SECURE
WITH SHORT SCREWS THROUGH FLANGE INTO PIPE 6" VALVE BOX
4" INSPECTION PORT RISER
4" PUSH ON CAP
6" VALVE BOX
INFILTRATOR QUICK-4 END CAP
4" INSPECTION PORT RISER
DEEP BURY TANK
7" REINFORCED
TANK LID
REQUIRED MANUFACTURER
DEEP BURY TANK
REINFORCEMENT
08/03/26
8/3/2026