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364 S.F. MOUND
BORPTION FIELD
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2"0 PVC 90'
2"0x 90' ELBOW (TYP.)1
DRILL TER AT
F PIPES FOR ENTIRE
/ALL HOLES RNLENGTH
NOTE:
ALL PERFORATED DISTRIBUTION (FOR PRESSURE DOSING OF MOUND
PIPES SHALL BE LEVEL N.T.S.
I � � ' llllllJ l l
3 BEDROOM �! /
/RESIDENCE I i I J$IpI N/OUT
61'
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fill
1,000 GALLON
O
ALLEY PRE -CAST SEPTIC TANK AND PUMP,
1 ITH 2 COMPARTMENTS, EFFLUENT FILTER
AND BUOYANCY ANCHORING.
24" HIGH RISER
ST PIT 1
2" EFFLUENT DISCHARGE LINE
2"0 HEDULE 40 PVC
EFFLVT LINE SLOPED
DOVTOWARDS TANK
BASE OF SAND
AREA: 360
NEST PIT 3
2" PVC
DUND AND SAND BED ABSORPTION BED
.ST PIT 2
)ED SWALE
A4-1
A..J
TYPICAL PLAN VIEW OF MOUND
N.T.S.
REMOVABLE SCREW OR SLIP CAP
FINISH GRADE AT TOP OF MOUND--\
4" PVC SOLID PIPE
(LENGTH VARIES)
(4) 1/4" X 4" LONG SLOTS 0 90' APAR�o�
ROCK
4" PVC FLANGED SUPPORT FITTIN AGGREGATE
AGGREGATE/SAND INTERFACE oo"
SAND BED L 4" MIN.
1/4" WIDE SLOT (TYPICAL
OBSERVATION WELL DETAIL
N.T.S.
)
L�_Q1V
4" x 4" x 4"
PVC WYE CLEAN OUT
ASSEMBLY
SEWER CLEAN OUT DETAIL
N.T.S.
* S BUIL*
8-12-16
PROPOSED FINISH
12" THICK BED OF OF WASHED COURSE 5
GRAVEL OR CRUSHED STONE PASSIM
SCREEN AND RETAINED ON 3/4"
2" PERFORATED RIGID PVC DISTRIBUTION LA
IN]
GRAPHIC SCALE
10 20 w
( IN FEET )
I inch = 20 It.
GENERAL NOTES
1. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE GARFIELD COUNTY PUBLIC
HEALTH AGENCY ON-SITE WASTEWATER TREATMENT SYSTEM REGULATIONS, EVEN
THOUGH ALL SUCH REQUIREMENTS ARE NOT SPECIFICALLY NOTED ON THI5
DRAWING. THE CONTRACTOR SHALL BE RESPONSIBLE FOR SUCH SPECIFIC DETAILS
AS ARE REFERRED TO IN THE ABOVE MENTIONED REGULATIONS.
2. SYSTEM DESIGN
FLOW: 3 BEDROOMS *2 PERSONS/BEDROOM "75 GALLONS/PERSON/DAY IS
450 GPD = AVERAGE DAILY FLOW
SEPTIC TANK: MINIMUM PRE -CAST CONCRETE TANK SIZE IS 1,000 GALLONS.
PROPOSED TREATMENT SYSTEM: MOUNDED UNLINED OPEN BOTTOM SAND FILTER
PROPOSED THICKNESS OF SAND BED: 2 FEET, MINIMUM
TREATMENT LEVEL: T1-2
METHOD OF EFFLUENT APPLICATION: PRESSURE DOSED
SIZE ADJUSTMENT FACTOR FOR PRESSURE DOSED BED: 1.0
RECEIVING SOIL PERCOLATION RATE: 8 MINUTES PER INCH
LONG TERM ACCEPTANCE RATE TL2: 1.25 GAL/DAY/SQ. FT.
REQUIRED SOIL TREATMENT AREA: A=360 SQ. FT.
1.25 GPD S.F.
3. TOPSOIL: SOIL EXCAVATED FROM SITE ACCEPTABLE IF NO CLAY IS PRESENT.
4. VEHICULAR TRAFFIC IS PROHIBITED ON THE FIELD.
5, CLEANOUTS ARE REQUIRED AT ALL BENDS AND AT LEAST EVERY 150
FEET ALONG THE EFFLUENT LINE.
6. INSTALL RISERS AS NECESSARY TO BRING ALL ACCESS POINTS AT OR ABOVE
THE FINAL GRADE.
7. LOCATIONS OF ALL COMPONENTS MAY BE VARIED AS NECESSARY AS LONG
AS ALL MINIMUM DISTANCES AND SLOPES MEET THOSE REQUIRED.
8. PROVIDE POSITIVE DRAINAGE OF SURFACE WATER AWAY FROM
ABSORPTION AREA USING DRAINAGE SWALES AS NECESSARY,
9. THE CONTRACTOR SHALL VERIFY ALL DEPTHS, SLOPES AND CLEARANCES FROM
THE PROPOSED HOME, WELLS AND STRUCTURES, PRIOR TO CONSTRUCTION.
10. THIS DRAWING DOES NOT CONSTITUTE AN OWTS PERMIT. PERMIT MUST
BE OBTAINED FROM APPROPRIATE COUNTY OFFICIALS,
11, THIS SYSTEM IS SIZED FOR TYPICAL DOMESTIC WASTES ONLY. BACKWASH OR
FLUSHING FLOWS FOR REVERSE OSMOSIS UNITS OR WATER SOFTENERS OR
FILTERS SHOULD NOT BE INTRODUCED INTO THIS SYSTEM.
12. THE SAND MUST BE THOROUGHLY SETTLED BY FLOODING OR OTHER MEANS
BEFORE THE DISTRIBUTION IS PLACED AT THE FINAL GRADE,
13. SAND USED SHALL BE AS FOLLOWS: SIEVE SIZE % PASSING
4 1
40 50-55%
200 <1
EFFECTIVE SAND SIZE MUST BE BETWEEN 0.25 mm AND 0.60 mm
TYPICALLY CONCRETE OR MASONRY SAND IS ACCEPTABLE.
14. PERCOLATION TESTS PERFORMED BY CRIS SHAW ON SEPTEMBER 1 2015.
15, DESIGN OF MOUND SYSTEM BASED ON THE "OBSERVATION OF PARTIAL EXCAVATION
FOR PROPOSED RESIDENCE AND DETACHED GARAGE, 8102 FOURMILE ROAD,
GARFIELD COUNTY, BY HP GEOTECH, DATED AUGUST 26, 2014.
16. THE SEPTIC TANK SHALL BE ANCHORED TO PREVENT FLOTATION CAUSED BY HIGH
GROUND WATER LEVELS.
17. SEPTIC TANK SHALL HAVE RISES OVER EACH ACCESS MANHOLE AND ALL RISERS
SHALL EXTEND TO OR ABOVE FINAL GRADE.
18. THE OWNER SHALL VERIFY ADEQUATE SEPARATION DISTANCES FROM THE SYSTEM,
PRIOR TO DRILLING ANY WELLS ON THE SITE.
19. THE APPLICANT OR LICENSED INSTALLER SHALL NOTIFY THE COUNTY AND THE
ENGINEER NO LESS THAN TWO BUSINESS DAYS IN ADVANCE TO SCHEDULE A
FINAL FIELD INSPECTION OF THE SYSTEM, PRIOR TO BACKFILLING THE SYSTEM.
20. THE APPLICANT OR LICENSED INSTALLER SHALL PROVIDE A SURVEYED AS -BUILT
DRAWING OF THE SYSTEM TO THE COUNTY AND ENGINEER, UPON COMPLETION.
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* S BUIL*
8-12-16
PROPOSED FINISH
12" THICK BED OF OF WASHED COURSE 5
GRAVEL OR CRUSHED STONE PASSIM
SCREEN AND RETAINED ON 3/4"
2" PERFORATED RIGID PVC DISTRIBUTION LA
IN]
GRAPHIC SCALE
10 20 w
( IN FEET )
I inch = 20 It.
GENERAL NOTES
1. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE GARFIELD COUNTY PUBLIC
HEALTH AGENCY ON-SITE WASTEWATER TREATMENT SYSTEM REGULATIONS, EVEN
THOUGH ALL SUCH REQUIREMENTS ARE NOT SPECIFICALLY NOTED ON THI5
DRAWING. THE CONTRACTOR SHALL BE RESPONSIBLE FOR SUCH SPECIFIC DETAILS
AS ARE REFERRED TO IN THE ABOVE MENTIONED REGULATIONS.
2. SYSTEM DESIGN
FLOW: 3 BEDROOMS *2 PERSONS/BEDROOM "75 GALLONS/PERSON/DAY IS
450 GPD = AVERAGE DAILY FLOW
SEPTIC TANK: MINIMUM PRE -CAST CONCRETE TANK SIZE IS 1,000 GALLONS.
PROPOSED TREATMENT SYSTEM: MOUNDED UNLINED OPEN BOTTOM SAND FILTER
PROPOSED THICKNESS OF SAND BED: 2 FEET, MINIMUM
TREATMENT LEVEL: T1-2
METHOD OF EFFLUENT APPLICATION: PRESSURE DOSED
SIZE ADJUSTMENT FACTOR FOR PRESSURE DOSED BED: 1.0
RECEIVING SOIL PERCOLATION RATE: 8 MINUTES PER INCH
LONG TERM ACCEPTANCE RATE TL2: 1.25 GAL/DAY/SQ. FT.
REQUIRED SOIL TREATMENT AREA: A=360 SQ. FT.
1.25 GPD S.F.
3. TOPSOIL: SOIL EXCAVATED FROM SITE ACCEPTABLE IF NO CLAY IS PRESENT.
4. VEHICULAR TRAFFIC IS PROHIBITED ON THE FIELD.
5, CLEANOUTS ARE REQUIRED AT ALL BENDS AND AT LEAST EVERY 150
FEET ALONG THE EFFLUENT LINE.
6. INSTALL RISERS AS NECESSARY TO BRING ALL ACCESS POINTS AT OR ABOVE
THE FINAL GRADE.
7. LOCATIONS OF ALL COMPONENTS MAY BE VARIED AS NECESSARY AS LONG
AS ALL MINIMUM DISTANCES AND SLOPES MEET THOSE REQUIRED.
8. PROVIDE POSITIVE DRAINAGE OF SURFACE WATER AWAY FROM
ABSORPTION AREA USING DRAINAGE SWALES AS NECESSARY,
9. THE CONTRACTOR SHALL VERIFY ALL DEPTHS, SLOPES AND CLEARANCES FROM
THE PROPOSED HOME, WELLS AND STRUCTURES, PRIOR TO CONSTRUCTION.
10. THIS DRAWING DOES NOT CONSTITUTE AN OWTS PERMIT. PERMIT MUST
BE OBTAINED FROM APPROPRIATE COUNTY OFFICIALS,
11, THIS SYSTEM IS SIZED FOR TYPICAL DOMESTIC WASTES ONLY. BACKWASH OR
FLUSHING FLOWS FOR REVERSE OSMOSIS UNITS OR WATER SOFTENERS OR
FILTERS SHOULD NOT BE INTRODUCED INTO THIS SYSTEM.
12. THE SAND MUST BE THOROUGHLY SETTLED BY FLOODING OR OTHER MEANS
BEFORE THE DISTRIBUTION IS PLACED AT THE FINAL GRADE,
13. SAND USED SHALL BE AS FOLLOWS: SIEVE SIZE % PASSING
4 1
40 50-55%
200 <1
EFFECTIVE SAND SIZE MUST BE BETWEEN 0.25 mm AND 0.60 mm
TYPICALLY CONCRETE OR MASONRY SAND IS ACCEPTABLE.
14. PERCOLATION TESTS PERFORMED BY CRIS SHAW ON SEPTEMBER 1 2015.
15, DESIGN OF MOUND SYSTEM BASED ON THE "OBSERVATION OF PARTIAL EXCAVATION
FOR PROPOSED RESIDENCE AND DETACHED GARAGE, 8102 FOURMILE ROAD,
GARFIELD COUNTY, BY HP GEOTECH, DATED AUGUST 26, 2014.
16. THE SEPTIC TANK SHALL BE ANCHORED TO PREVENT FLOTATION CAUSED BY HIGH
GROUND WATER LEVELS.
17. SEPTIC TANK SHALL HAVE RISES OVER EACH ACCESS MANHOLE AND ALL RISERS
SHALL EXTEND TO OR ABOVE FINAL GRADE.
18. THE OWNER SHALL VERIFY ADEQUATE SEPARATION DISTANCES FROM THE SYSTEM,
PRIOR TO DRILLING ANY WELLS ON THE SITE.
19. THE APPLICANT OR LICENSED INSTALLER SHALL NOTIFY THE COUNTY AND THE
ENGINEER NO LESS THAN TWO BUSINESS DAYS IN ADVANCE TO SCHEDULE A
FINAL FIELD INSPECTION OF THE SYSTEM, PRIOR TO BACKFILLING THE SYSTEM.
20. THE APPLICANT OR LICENSED INSTALLER SHALL PROVIDE A SURVEYED AS -BUILT
DRAWING OF THE SYSTEM TO THE COUNTY AND ENGINEER, UPON COMPLETION.
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MOUND SYSTEM SPECIFICATIONS
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THE TILLED AREA.
4, PLACE THE PROPER DEPTH OF SAND, THEN FORM THE SAND/GRAVEL INTERFACE
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MOUND SYSTEM SPECIFICATIONS
1. GRASS, SHRUBS AND TREES SHALL BE CUT CLOSE TO THE GROUND SURFACE
AND REMOVED FROM THE SITE.
2, THE MOUND SITE SHALL BE TILLED TO A DEPTH OF 8 INCHES TO ROUGHEN THE
SURFACE AND INCORPORATE THE VEGETATION. THIS CAN BE DONE WITH A
PLOW OR CHISEL TEETH MOUNTED ON A TOOL BAR ATTACHED TO THE BUCKET
OF A BACKHOE.
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3. A LAYER OF SAND SHOULD BE PLACED ON THE TILLED AREA. PLACEMENT OF
THE SAND SHOULD BE SUCH AS NOT TO RUT OR COMPACT THE TILLED AREA.
ALL WORK SHOULD BE PERFORMED FROM THE SIDE SO AS NOT TO COMPACT
THE TILLED AREA.
4, PLACE THE PROPER DEPTH OF SAND, THEN FORM THE SAND/GRAVEL INTERFACE
AREA WITH THE AREA BOTTOM BEING LEVEL.
5, PLACE THE SCREENED ROCK (AGGREGATE) TO THE SPECIFIED DEPTH AND AREA.
6. PLACE THE PRESSURE DISTRIBUTION PIPE, CONNECT IT TO THE SEWER AND
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7. COVER THE AGGREGATE WITH A GEOTEXTILE FILTER FABRIC.
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8. PLACE A MINIMUM OF 12 INCHES OF SUITABLE SOIL COVER ON THE SIDES OF THE
MOUND AND TO THE NECESSARY DEPTH ON THE TOP OF THE MOUND.
9. FINAL GRADE THE MOUND AND SURROUNDING AREA WITH LIGHT WEIGHT EQUIPMENT
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SO SURFACE WATER MOVES AWAY FROM THE MOUND AND DOES NOT ACCUMULATE
NEAR THE MOUND.
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GROUND COVER AS DESIRED,
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DOSING NOTES
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1. MINIMUM DOSING SHALL BE 100 GALLONS, 20 GPM PUMP AT 25' TOTAL
DYNAMIC HEAD.
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2. EFFLUENT FILTER IS NEEDED BETWEEN COMPARTMENTS 1 AND 2 OF SEPTIC TANK.DD
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SAND BED \ \\\\\oowllolLlC�s/// to
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NAREOFUDAROUDPEIMTER MON
EXISTING GROUND LINE BENEATH SAND BE
MOUND CROSS SECTION A -A
N.T.S.
FOR AND ON BEHALF OF
HIGH COUNTRY ENGINEERING, INC.
PROJECT NO.
2141055.00
OWTS -01
C7