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I BEFORE YOU DIG, GRADE OR EXCAVATE
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MEMBER UTILITIES
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THREE BEDROOM
RESIDENCE...
a HOUSE LOCATION
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DRIVEWAY
4" 2-WAY CLEANOUT '
r INV. 1.5'-2' BELOW EX GRADE±
4" PVC SEWER PIPE @ 296, f
USED SCHD-40 ! !
1.5" SCHD-40 TRANSPORT PIPE. INSTALLED AT f ! 1 1 + 1
MIN. 2.0% FOR DRAINAGE INTO CHAMBERS INSTALLED 2-COMPARTMENT 1250-GALLON CONCRETE SEPTIC TANK (VALLEY PRECAST ITEM #
4.7%- ='' `'1 1250t-2CP-HH) INSTALLED WITH (2) 24" DIA. RIBBED PVC RISERS W/ LIDS AT THE SURFACE.
PREVIOUS SOIL PROFILE PIT ` 2 INSTALLED ORENCO SIMPLEX EFFLUENT PUMP ASSEMBLY. (PVU57-1819-L) W/P300511 PUMP), W/
(KA 2-10-23) 1.50" DISCHARGE ASSEMBLIES. DEPTH TO TOP OF TANK FROM GRADE IS APPROX. 1'.
1 1/2" PVC SCHD-40 PERFORATED PIPE DISTRIBUTION LATERALS.
dp DRILL 3/16-INCH DIA. ORIFICES ON 2.75' CENTERS ALONG PIPE (TYP.).
ORIENT ORIFICES UPWARD BETWEEN FIRST AND LAST. INSTALLED FIRST
& LAST ORIFICES ORIENTED DOWNWARD W/ SNAP ON SPRAY SHIELDS.
I SOIL PROFILE PIT (SE 7-6-23) PP-t 41.0' E ABSORPTION/TREATMENT FIELD (3-BEDROOM CAPACITY)
i 1 r USED 40 QUICK-4 CHAMBERS IN 4 TRENCHES WITH 10 CHAMBERS PER ROW FOR A
TOTAL ABSORPTION AREA OF 420 5.F. THE SYSTEM WAS PLUMBED FOR EQUAL PRE5SURE
40 DISTRIBUTION. THE CHAMBERS WERE INSTALLED ON LEVEL GRADE IN EACH TRENCH.
<, THE BOTTOM OF EACH TRENCH WAS EXCAVATED TO A MAXIMUM AVERAGE DEPTH OF
1.5" PVC DISTRIBUTION MANIFOLD (TYP.) z 20 INCHES BELOW THE EXISTING SURFACE GRADES, WITHIN THE UPPER HORIZON OF
1.5" SCHD-40 DI5TRIBUTION PIPES INSTALLED AT MIN. ` THE NATIVE SANDY SILT LOAM SOILS & BACKFILLED WITH A MINIMUM 12-INCHES OF
1% FROM HP TEE (TYP) TO LATERAL PIPE MANIFOLD TEE ar COVER OVER THE CHAMBERS. THE FINISH GRADE ACROSS THE FIELD WAS SLIGHTLY
CONNECTION AT HEAD OF EACH TRENCH PAIR MOUNDED A MINIMUM 3-INCHES ABOVE EXISTING ADJACENT GRADES.
4` 1
INSTALLED CHAMBER END CAP
ON ALL END CHAMBERS
INSTALLED 4" RISER PIPE INSPECTION PORT AT INSTALLED 4" RISER PIPE INSPECTION PORT EXTEND RISER W/
HEAD END OF EACH CHAMBER TRENCH (TYP.) PP-3 PUSH ON CAP MIN. 4" BELOW FINISH GRADE & COVER WITH 5"
DIA. VALVE BOX SET WITH LID 1" ABOVE FINSH GRADE
73b 4 Q .r (TYP. EACH TRENCH CHAMBER END CAP)
o EXCAVATION DEPTH 1.5' MIN.-4' MAX. BELOW SURFACE m INSTALLED 1.5" FLUSH BALL VALVE ON END OF EACH DISTRIBUTION
GRADE. MINIMUM. 12" COVER OVER TOP OF CHAMBERS E LATERAL. BELOW EACH INSPECTION PORT (TYP. END EA. ROW)
01
FILL & GRADE FIELD AREA APPROXIMATELY 3"-6" ABOVE
EXISTING SURFACE GRADES
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1 SOIL. PROFILE PIT (SE 7-6-23) -
1 .-
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TABLE
0JAVE
RADUS
I DUTA
LENCTN
CHORD FlEAraNr
CHOW
C1
145.97
1' ' '
91.10
S W94'e E
8&07
C2
232.91
6"2 '45"
107.16
S DO-01
105.22
C3
162.3.3
145,71
& 4n4221 E
140.22
G1
111,67
6
176.17
463.32
C5
75.76
, 4-14' '
$37.63
5 6"-roa, W
119.60
C6
300.40
283.40
273.05
0'wa"1
t'a '
72-80
a - W
6&04
ve
61.03
- '4 -
47,As
44 w
41.23
C'g
50.15
119,07
4 '
00
t&96
aNl4
'
Gil
53.76
37.49
W512676
NC13
N.-
201.46
'4 -
32.22
C14
666A7
57,y7
N
C15
38.W
31.68
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9E TEEMENS -Ti TO SC COFWEMR 9U&TFON 35
9E TO SE CORNER SECDON 311 S7P1O0'o7-E 67&76'
PROPANE TANK a
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LINE EASEMENT
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TYPICAL YARD LANDSCAPED SURFACE
OR AGGREGATE PAVED SURFACE
A,
6" MIN.
EXCAVATED MATERIAL
COMPACTED TO 90%
4" STANDARD PROCTOR
NATIVE SCREENED
4"
TRENCH CROSS-SECTION FOR
SDR-35.0R SCH-40 PIPES
N.T.S.
1
Kobielusz Design Calculations OWTS
The onsite wastewater treatment system (OWTS) was installed to serve a small single story residential structure
founded on a crawl space foundation.
The design flow treatment capacity is calculated as follows for a minimum 3-bedroom single family residence.
From the Regulation 43 usage table :
Minimum population based on 3 bedrooms = 6 persons.
Gallons per day per person =75 gal/person/day, No peaking factor
Max. Design flow (Qd)gallons/day = (# of people) x (avg. flow)gal/person/day.
Design flow Qd = 6*75=450 gpd
Septic Tank Design
Use a 1250 gallon, two compartment concrete septic tank with a high head pump assembly in the second
compartment.
Current and Previous Sub Surface Conditions and Testing
An additional site assessment and soils evaluation was performed by SE on July 6, 2023. Two new profile pits
were excavated adjacent to the propopose field atthe location as Shawn on the plan. Soils observed in the pits
were sampled by the performance of USDA sail texture and structure characterization methods. The soils below
9 inches of topsoil consist of sandy loam that has moderate dense granular structure with gravels and scattered
cobble size sandstone rock fragments with rock content less than 35%. The soils observed were dry and are
consistent to the the 7-8 foot depth of the profile pits. This soil type 2 has an effective loading rate for
conventional soil treatment of 0.6 gal/S.F./day for a level 1 conventional treatment system. The type 2 soils
within the new proposed soil treatment area (STA] are consistent over the moderately sloped vegetated area.
No limiting layer, fractured bedrock or free water was encountered within the profile pit excavations.
A previous subsurface soil investigation and site assessment was performed by Kumar & Associates on February
10, 2023. The soils in the proposed field envelope area were sampled and characterized by application of
hydrometer and sieve analysis from samples from three 4-5 foot deep profile pits the shallow soils in these
excavations were sampled, observed and tested at 2-3, and 4-5 foot depths.
The native soils encountered below a foot of topsoil consist of relatively dense, sandy loam with gravels and
scattered cobble size sandstone rock fragments with rock content less than 35%. The soils at depth have an
effective loading rate for of 0.6 Gal/S.F./day for a level 1 treatment system. The equivalent percolation rate is
assumed to be 16-25 minutes per inch. The soils appear to be consistent across the site from observations in
other excavations. No free water was encountered in the pit excavations and soils were slightly moist to moist.
Seasonal high groundwater levels are expected to be below 15 feet from the existing surface grades in the area
of the proposed field.
Soil Treatment Area/ Pressure dosed chamber trench 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 new treatment system utilizing
pressure dosed chamber trenched with custom perforated distribution laterals. The treatment system consists
of pressure dosed graveless chamber trenches installed in native sail, in accordance with Regulation 43 design
criteria for this technology.
Lang Term Acceptance Rate [LTAR]
Considering the allowable application of the OWTS regulation 43 and CDPHE approved Distribution Product for
Infiltrator Water Technologies, Quick4 Infiltrators product:
Receiving septic tank effluent, the treatment level-1 for Quick4 Chambers requires the infiltrative surface being
at least 4-feet above a limiting layer (43.8. Table 7-2.4); Maximum hydraulic loading rate fcrTL1 effluent is the
long term acceptance rate of the Type 2 receiving soil is 0.6 gal./S.F./day) (Table 10-1 &10-1A.).
A(sf) = Qd x L.F.1 x L.F.2.: A = Area;
LTAR LTAR = 0.6 gal/S.F./day for silt loam
Qd = flow (gal/day) for OWTS = 450 gpd
L.F.1=0.8 pressure dosed trench application
L.F.2=0.7 Gravelless chambers
OWTS: A(sf) = 450 gpd x 0.8 x 0.7 = 420 S.F.
0.6 Gal/S.F./day
Number of Quick-4 Infiltrator chambers 4'xTx12"chambers:
420 S.F = 35 Infiltrator Quick-4 chambers; Use 40 Quick-4 LP chambers
12 S.F./Chamber
Used 40 Quick-4 Low Profile Infiltrator chambers in four trenches. Four 42' long by 3' wide trenches with 10
chambers per row plus end caps, as delineated on the plan. The septic tank effluent is pressure distributed to
the head of each trench via distribution pipe manifolds from a high head pump discharge assembly in the
dosing compartment of the 1,250 gallon tank.
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END CAP
1
OWTS DEMAND DOSING CALCULATIONS
CYCLE, VOLUME AND PUMP FLOAT SETTI N GS
DESIGN FLOW Q
450
GPD
ADJUSTMENT FACTOR
0.5
METERED OR ASSU MED Q
262.5
GPD
TARGET DOSING CYCLES/DAY
10
DOSES/D
DOSE VOLUME /CYCLE
26.250
GAL
DISTRIBUTION LATERAL PIPES VOL
7.5
GAL
DOSE VOL/ LATERAL PIPESVOL
3.5
ITIMES
TRANSPORT PIPE VOLUME
10.4
GAL
SU M TOTAL DOSE VOL/CYC LE
36.624
GAL
DOSING COMPARTMENT STAGE VOL
9.55
GAL/IN
ON/OFF FLOAT SPREAD SETTING
4.3
IN
OPERATING DESIGN PUMP DISCHARGE RATE
34
GPM
PUMPRUNTIME
1.1
MIN
FLOW RATE PER ORIFICE
0.62
GPM
GAL/ORIFICE/DOSE
0.67
GAL
FLOAT SETTINGS
CUMULATIVE DEPTH FROM TOP TANK
HIGH LEVEL ALARM FLOAT DEPTH
19,00
IN
ON FLOAT DEPTH
22.00
IN
OFF FLOAT DEPTH
26.28
IN
CROWN FIELD TRENCH TO
DIVERT SURFACE WATER
6" VALVE BOX
EXISTING GRADE
EXTEND 4" RISER PIPE MIN. 3"
THROUGH END CAP OR CHAMBER UNDISTURBED EARTH
PRE FORMED PENETRATION
SECURE WITH SCREWS THROUGH SCREENED BACKFILL
PENETRATION FLANGE INTO PIPE NATIVE SOIL
INFILTRATING CHAMBER UNIT ( SPRAY SHIELD)
LOW PROFILE QUICK-4 OR ARC-36 810
DIFFUSER
PRESSURE DISTRIBUTION PIPE CONNECTED
THROUGH END CAP TO CUSTOM PERFORATED
DISTRIBUTION LATERAL PIPE
b" VALVE BOX SCARIFY/TILL BOTTOM SURFACE AND
- PUSH ON CAP EXCAVATION SIDE WALLS
4" INSPECTION PORT RISER
Quick4 Plus Low Profik
(to scale
t
SEED AND MULCH FINISH TOPSOIL SURFACE
MAINTAIN SUITABLE VEGETATIVE COVER
GENERAL NOTES
1. THE OWTS A5 SHOWN ON THE PLAN AND DETAILS WERE DESIGNED BY SOPRIS ENGINEERING.
2. THE PROP05ED LOT CONDITION5 WERE PREPARED BY SOPRIS ENGINEERING AND OWNERS.
3. THE EXISITNG LOT CONDITIONS PER COUNTY GIS DATA BASE, AERIAL MAPPING, LIDAR
TOPOGRAPHY AND SURVEY INFORMATION BY HIGH COUNTRY. 2002 MARTIN EXEMPTION PLAT.
4. PRIMARY OWNER NAME & ADDRESS: MARTIN RANCH II LLC, 13612 59 ROAD, COLLBRAN CO 81624.
S. Applicant: JORDAN KOBIELU5Z, PO BOX 654, CARBONDALE,CO
6. LEGAL SUMMARY: LOT 2. AKA PARCEL 1 MARTIN EXEMPTION.
7. SITE ADDRESS: 36OZ COUNTY RD 108, CARBONDALE, CO 81623
S. PARCEL NUMBER: 239536400152
9. GARFIELD COUNTY PERMIT#: SEPT-8164 ISSUED 07/10/2023
CUSTUME PERFORATED PRESSURE PIPE
WITH ORIFICES AT 12 O'CLOCK. SECURE
PIPE WITH PUSH IN STAPLES
NATIVE SILT LOAM SOIL
N CITE.
THE CHAMBER TRENCH MUST BE LEVEL. INSTALL CHAMBERS WITH INLET AND
END CAPS OVER SAND LAYER FOR USE AS SPRAY SHEILDS. INSTALL INDIVIDUAL
DISTRIBUTION LATERALS TO THE HEAD OF EACH CHAMBER TRENCH FROM A
MANIFOLD CONNECTING EACH CHAMBER ROW. CUSTOM PERFORATED PIPE TO
BE LAID ON TOP OF THE ASORPTIVE SURFACE WITH ORIFICES ORIENTED UPWARD
EXCEPT THE FIRST AND LAST ORIFICESTO BE ORIENTED DOWNWARD. INSTALLA
4" VERTICAL INSPECTION PORT RISER FROM THE MOLDED END CAP CUT OUT ON
THE LAST CHAMBER IN EACH ROW. INSTALL A BALL VALVE AT THE END OF THE
DISTRIBUTION LINE ACCESSIBLE FROM THE INSPECTION PORTTO ALLOW
FLUSHING OF THE LINE. THE VALVE IS CLOSED FOR NORMAL OPERATION.
PRESSURE DOSED CHAMBER TRENCH DETAIL
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DESIGNED BY
PER
05-24-23
DRAWN BY
WJB
04-20-23
CHECKED BY
YTN
06-14-23
DATE:
10-06-23
JOB NO,
33027.01
SHEET
C-3