HomeMy WebLinkAboutEngineer's OWTS Design PlanSETBACK DISTANCES FROM SOIL TREATMENT AREA, GARFIELD COUNTY (06/18/18):
SPRING, WELLS, SUCTION LINES, CISTERNS - 100 FT
POTABLE WATER SUPPLY LINE - 25 FT
STRUCTURE W/ BASEMENT, CRAWL SP. OR FOOT. DRAINS- 20 FT
STRUCTURE W/O BASEMENT, CRAWL SP. OR FOOT. DRAINS- 10 FT
PROPERTY LINES/EASEMENTS, PIPED OR LINED IRRIGATION DITCH- 10 FT
SUBSURF. DRAIN, INT. IRRIGATION LATERAL, DRY GULCH, CUT BANK, FILL AREA- 25 FT
LAKE, WATER COURSE, IRRIGATION DITCH, STREAM, WETLAND- 50 FT
SEPTIC TANK, DOSING TANK, VAULT OR PRIVY- 5 FT
SETBACK DISTANCES FROM BUILDING SEWER OR EFFLUENT LINES
APPROX. LOT LINES
AP
P
R
O
X
.
L
O
T
L
I
N
E
S
10
'
P
R
O
P
E
R
T
Y
L
I
N
E
S
E
T
B
A
C
K
DRIVEWAY
ENTIRETY OF LOT NOT SHOWN FOR CLARITY
*IMPORTANT NOTE*
BLACK CANYON ENGINEERS AND GARFIELD COUNTY TO BE
PRESENT FOR INSPECTION BEFORE SYSTEM IS COVERED.
NOTIFY MIN. 5 BUSINESS DAYS IN ADVANCE
(2.42 ACRES)
EXI
S
T
I
N
G
5
B
D
R
M
.
H
O
U
S
E
PROPOSED S.T.A.,
(3) TRENCH, 3' X 80'
20 CHAMBERS PER TRENCH
60 CHAMBERS TOTAL
PROTECT FROM DISTURBANCES, COMPACTION, OR
DAMAGE BY MEANS OF STAKING, FENCING, POSTING, ETC.
PROPOSED SEPTIC TANK,
1,500 GAL. MIN.
EXISTING CLEANOUT WITHIN 5' OF BLDG.
(APPROX. LOCATION)
4" DIA. SDR 35 PVC,
MIN. 1% SLOPE,
FROM TANK TO S.T.A.
CO
TEST PIT 2
TEST PIT 1
DISTANCES BETWEEN FEATURES
ARE APPROX., PROVIDED FOR REF.
& SHOULD BE VERIFIED BY SURVEY
256 OLD NATIVE LANE
GLENWOOD SPRINGS, CO
EXISTING 1,500 GAL.
SEPTIC TANK
(APPROX. LOCATION)
SEE DETAILS ON SHEET SP2
EXISTING S.T.A. (APPROX. LOCATION)
ABANDON IN PLACE PER AHJ & CO. REG. 43
4 HOLE D-BOX
W/ RISER
INSPECTION PORT (6 TOTAL)
4" DIA. PVC SOLID PIPE W/ CAP.
INSTALLED AT FIRST & LAST
CHAMBER IN EACH TRENCH
APP
R
O
X
.
L
O
T
L
I
N
E
S
10'
P
R
O
P
E
R
T
Y
L
I
N
E
S
E
T
B
A
C
K
100'
10'
10'
100' OVERHEAD POW
E
R
E
A
S
E
M
E
N
T
(
A
P
P
R
O
X
.
L
O
C
A
T
I
O
N
)
P
R
O
V
I
D
E
D
F
O
R
R
E
F
.
VERIFY IN FIELD
EXISTING INFLUENT LINE
(APPROX. LOCATION)
CO DOUBLE SWEEP
CLEANOUT
(SEE NOTE A ON
SHEET SP2)
NOTE:
AHDERE TO ALL THE SETBACKS IN
REGARDS TO THE POTABLE WATER
SUPPLY LINE TO ALL THE PROPOSED
OWTS COMPONENTS. APPROXIMATE
LOCATION OF THE POTABLE WATER
SUPPLY LINE UNKNOWN.
SLEEVE & BED CONVEYANCE
LINE WHERE PIPE IS SUBJECT
TO VEHICLE TRAFFIC
(MIN. SCH. 40 RATING)4" DIA. SCH. 40 PVC,
MIN. 2% SLOPE,
FROM TIE-IN LOCATION TO TANK
SETBACK DISTANCES FROM SEPTIC TANK, H.L.T. UNIT, DOSING TANK, VAULT
GARFIELD COUNTY (06/18/18):
SPRING, WELLS, SUCTION LINES, CISTERNS - 50 FT
POTABLE WATER SUPPLY LINE - 10 FT
STRUCTURE W/ BASEMENT, CRAWL SP. OR FOOT. DRAINS- 5 FT
STRUCTURE W/O BASEMENT, CRAWL SP. OR FOOT. DRAINS- 5 FT
PROPERTY LINES/EASEMENTS, PIPED OR LINED IRRIGATION DITCH- 10 FT
SUBSURF. DRAIN, INT. IRRIGATION LATERAL, DRY GULCH, CUT BANK, FILL AREA- 10 FT
LAKE, WATER COURSE, IRRIGATION DITCH, STREAM, WETLAND - 50 FT
SEPTIC TANK, DOSING TANK, VAULT OR PRIVY - N/A
SETBACK DISTANCES FROM BUILDING SEWER OR EFFLUENT LINES
GARFIELD COUNTY (06/18/18):
SPRING, WELLS, SUCTION LINES, CISTERNS - 50 FT
POTABLE WATER SUPPLY LINE - 5 FT
STRUCTURE W/ BASEMENT, CRAWL SP. OR FOOT. DRAINS- 0 FT
STRUCTURE W/O BASEMENT, CRAWL SP. OR FOOT. DRAINS- 0 FT
PROPERTY LINES/EASEMENTS, PIPED OR LINED IRRIGATION DITCH- 10 FT
SUBSURF. DRAIN, INT. IRRIGATION LATERAL, DRY GULCH, CUT BANK, FILL AREA- 10 FT
LAKE, WATER COURSE, IRRIGATION DITCH, STREAM, WETLAND- 50 FT
SEPTIC TANK, DOSING TANK, VAULT OR PRIVY- N/A
Black Canyon Engineers
222 S Park Ave.
Montrose, CO 81401
970-568-5391
Support@BlackCanyonEngineers.com
www.BlackCanyonEngineers.com
IF NO P.
E
.
S
T
A
M
P
I
S
P
R
E
S
E
N
T
,
THIS IS A
D
R
A
F
T
S
E
T
A
N
D
SHALL N
O
T
B
E
U
S
E
D
F
O
R
CONSTRU
C
T
I
O
N
O
R
MATERIA
L
S
P
U
R
C
H
A
S
E
SP1
Coon OWTS
256 Old Native Lane
Glenwood Springs, CO 81601
Garfield County, CO
Single Family Residence
BCE052517
07/03/25
As Noted
1)OWNER/BUILDER/CONTRACTOR TO VERIFY
ACCURACY OF SEPTIC (O.W.T.S) PLANS WITH
ARCHITECTURAL & OTHER PLANS AND NOTIFY
ENGINEER OF ANY DISCREPANCIES PRIOR TO
EXCAVATION, CONSTRUCTION OR MATERIALS
PURCHASE.
2)THE ENGINEER SHALL BE NOTIFIED A MINIMUM
OF 5 BUSINESS DAYS IN ADVANCE VIA EMAIL AT
INSPECTIONS@BLACKCANYON
ENGINEERS.COM FOR INSPECTION AS PER
NOTES ON PAGE SP2.
3)THE ENGINEER SHALL BE NOTIFIED IF ADVERSE
OR POOR SOIL CONDITIONS OR WATER ARE
ENCOUNTERED UPON EXCAVATION. FURTHER
ENGINEERING MAY BE REQUIRED
4) VALID, ORIGINAL DOCUMENT ONLY WITH
EMBOSSED, SIGNED SEAL
5) ALL NOTES & REQUIREMENTS FROM PAGE SP2
APPLY TO PAGE SP1
6) ALL MEASUREMENTS TAKEN WITH BASIC
COMPASS, RECREATIONAL LASER RANGE
FINDER & GPS. ACCURACY IS LIMITED TO THAT
OFFERED BY STATED INSTRUMENTS
7) STATED DIMENSIONS TAKE PRECEDENT OVER
MEASURED/SCALED DIMENSIONS
8) TOTAL PAGES: 2
SIZE: ANSI D ("22 X 34")
DESCRIPTIONREV.DATE
07/29/2025
SETBACK DISTANCES FROM SEPTIC TANK, H.L.T. UNIT, DOSING TANK, VAULT
GARFIELD COUNTY (06/18/18):
SPRING, WELLS, SUCTION LINES, CISTERNS - 50 FT
POTABLE WATER SUPPLY LINE - 10 FT
STRUCTURE W/ BASEMENT, CRAWL SP. OR FOOT. DRAINS- 5 FT
STRUCTURE W/O BASEMENT, CRAWL SP. OR FOOT. DRAINS- 5 FT
PROPERTY LINES/EASEMENTS, PIPED OR LINED IRRIGATION DITCH- 10 FT
SUBSURF. DRAIN, INT. IRRIGATION LATERAL, DRY GULCH, CUT BANK, FILL AREA- 10 FT
LAKE, WATER COURSE, IRRIGATION DITCH, STREAM, WETLAND - 50 FT
SEPTIC TANK, DOSING TANK, VAULT OR PRIVY - N/A
SETBACK DISTANCES FROM SOIL TREATMENT AREA, GARFIELD COUNTY (06/18/18):
SPRING, WELLS, SUCTION LINES, CISTERNS - 100 FT
POTABLE WATER SUPPLY LINE - 25 FT
STRUCTURE W/ BASEMENT, CRAWL SP. OR FOOT. DRAINS- 20 FT
STRUCTURE W/O BASEMENT, CRAWL SP. OR FOOT. DRAINS- 10 FT
PROPERTY LINES/EASEMENTS, PIPED OR LINED IRRIGATION DITCH- 10 FT
SUBSURF. DRAIN, INT. IRRIGATION LATERAL, DRY GULCH, CUT BANK, FILL AREA- 25 FT
LAKE, WATER COURSE, IRRIGATION DITCH, STREAM, WETLAND- 50 FT
SEPTIC TANK, DOSING TANK, VAULT OR PRIVY- 5 FT
GENERAL NOTES:
1)DESIGN AND OVERALL CONSTRUCTION INCLUDING COMPONENTS SHALL CONFORM TO THE REQUIREMENTS OF
GARFIELD COUNTY, CO. REG. 43, THE N.E.C. & THE COLORADO PLUMBING CODE.
2)LOCATE ALL EXISTING UTILITIES AND CONFIRM THAT ALL SETBACKS REQUIRED BY GARFIELD COUNTY & THIS DRAWING
CAN BE SATISFIED PRIOR TO EXCAVATION, CONSTRUCTION OR MATERIALS PURCHASE.
3)PVC PIPE TO BE EQUIVALENT TO OR GREATER THAN STRENGTH AS PER ASTM D3034 FOR UN-PERFORATED &
EQUIVALENT TO OR GREATER THAN STRENGTH AS PER ASTM D2729 FOR PERFORATED PIPE. ALL ANGLED PIPE
CONNECTIONS ON SOLIDS LINES SHALL BE 45 OR 22.5 DEGREE ONLY.
4)SEPTIC TANK SHALL BE A TWO COMPARTMENT TANK WITH A SEALED TANK BAFFLE, MANUFACTURED BY A COLORADO
DPHE APPROVED MANUFACTURER THAT MEETS REQ'S OF GARFIELD COUNTY & CO. REG. 43. FOLLOW ALL MFG.
INSTRUCTIONS & MAINTENANCE REQS. LEVEL GRADE AND PROOF COMPACT OR BED BOTTOM OF EXCAVATION TO ENSURE
LEVEL AND STABLE INSTALLATION OF TANK.
5)TANK SIZES SPECIFIED HEREIN ARE BOTH NOMINAL AND MINIMUM. FOR SYSTEMS WHERE A PUMP IS PLACED IN THE
TANK, OWNER/INSTALLER TO VERIFY THAT SELECTED TANK HAS SUFFICIENT EXCESS VOLUME SO AS TO NOT GO BELOW
THE MINIMUM SIZE WHEN THE PUMP VOLUME IS SUBTRACTED OUT.
6)IF A PLASTIC (POLY) TANK IS USED, THE BRAND OF TANK SHALL BE INFILTRATOR, ORENCO, OR NORWESCO. IF THE
SYSTEM INCLUDES A PUMP, THE PUMP SHOULD BE PLACED IN A SEPARATE DOSING TANK FOLLOWING THE MAIN TANK AND
NOT THE SEPTIC TANK.
7)IF A PLASTIC (POLY) TANK IS USED, OWNER/INSTALLER SHALL ANCHOR TANK DOWN DUE TO BUOYANCY CONCERNS.
FOLLOW ALL MFG.'S INSTRUCTIONS.
8)FOLLOW ALL COMPONENT (D-BOXES, EFFLUENT FILTERS, PUMPS, FLOATS, CONTROL PANELS, ETC.) MFG.'S
INSTRUCTIONS INCLUDING LEVEL PLACEMENT & CODE COMPLIANCE WHERE APPLICABLE.
9)FOR PRESSURE DIST. SYSTEMS: FLOW, MEASURED VIA WATER SQUIRT HEIGHT, MUST BE MADE EQUAL BETWEEN
LATERALS BY FLOW EQUALIZING / THROTTLING VALVES IN MANIFOLD. A 30-72" OPERATING HEAD (OR EQUIV. SQUIRT
HEIGHT) MUST BE AT DISTAL END OF LATERALS. INSTALLER MUST PROVIDE PHOTOS TO ENGINEER VERIFYING SUCH. ENSURE
ALL LIQUID DRAINS TO FIELD OR BACK TO TANK SO AS TO PREVENT FREEZING OF LINE. FLOAT POSITIONS & SYS. CONFIG. BY
OTHERS. EFFLUENT FILTER MUST BE INSTALLED BEFORE ANTI-SIPHON VALVE WHEN S.T.A. ELEVATION IS BELOW PUMP
ELEVATION.
10)ALL CONVEYANCE LINES PRIOR TO THE SEPTIC TANK SHALL HAVE 1 DOUBLE SWEEP CLEANOUT W/RISER EVERY 100' IN
ADDITION TO THE ONE REQUIRED WITHIN 5' OF THE BUILDING.
11)INFILTRATIVE SURFACE TO BE LEVEL, U.N.O. MAX DEPTH IS 4 FT.
12)SEED THE FINISHED SURFACE OF LEACH FIELD AND DISTURBED SOIL AREAS AFTER CONSTRUCTION.
13)GRADE GROUND AROUND SEPTIC SYSTEM SO AS TO DIVERT WATER AWAY FROM THE STA. ROLLING, HYDRAULIC
COMPACTION & MACHINE TAMPING NOT PERMITTED.
14)PRIOR TO CONSTRUCTION, SUBMIT ALL APPLICATIONS, PAY ALL FEES, AND OBTAIN THE PROPER PERMITS FROM
GARFIELD COUNTY.
15)SUBMIT A CLEAR AS-BUILT DRAWING OF THE ACTUAL CONSTRUCTION TO THE ENGINEER AT COMPLETION. THIS SHALL
INCLUDE DIMENSIONAL TIES TO THE SEPTIC TANK CLEANOUTS AND TO AT LEAST TWO CORNERS OF THE S.T.A. THERE SHALL
BE TWO TIES TO EACH POINT, REFERENCED TO PERMANENT FEATURES ON THE SURFACE SUCH AS CORNERS OF THE
BUILDING.
16)THE ENGINEER, WITH 5 BUSINESS DAYS NOTICE VIA EMAIL AT INSPECTIONS@BLACKCANYONENGINEERS.COM, WILL
MAKE FIELD OBSERVATIONS OF THIS WORK. THE FOLLOWING OBSERVATIONS WILL BE REQUIRED:
A.AFTER INSTALLATION OF DISTRIBUTION SYSTEM, LEFT EXPOSED TO CONFIRM LEVEL CONSTRUCTION WITHIN 1"
MAXIMUM TOLERANCE.
17)AT ANY POINT DURING INSTALLATION IF THE INSTALLER ENCOUNTERS A SOIL HORIZON, GROUNDWATER DEPTH, OR
BEDROCK DEPTH THAT DIFFERS FROM THAT SHOWN ON THIS DRAWING, NOTIFY E.O.R.
18)ALL SYSTEM PIPING, EXCEPT FOR DISTRIBUTION LATERALS WITHIN THE S.T.A., MUST BE BEDDED WITH SELECT
MATERIAL BEFORE FINAL INSPECTION BY LOCAL PUBLIC HEALTH AGENCY. SELECT MATERIAL MUST CONSIST OF LOOSE,
GRANULAR MATERIAL, FREE FROM STONES, CLODS, FROZEN SOIL, OR OTHER DELETERIOUS MATERIAL. BEDDING MATERIAL
MUST BE MECHANICALLY COMPACTED TO SUPPORT PIPING.
SETBACK DISTANCES FROM BUILDING SEWER OR EFFLUENT LINES
GARFIELD COUNTY (06/18/18):
SPRING, WELLS, SUCTION LINES, CISTERNS - 50 FT
POTABLE WATER SUPPLY LINE - 5 FT
STRUCTURE W/ BASEMENT, CRAWL SP. OR FOOT. DRAINS- 0 FT
STRUCTURE W/O BASEMENT, CRAWL SP. OR FOOT. DRAINS- 0 FT
PROPERTY LINES/EASEMENTS, PIPED OR LINED IRRIGATION DITCH- 10 FT
SUBSURF. DRAIN, INT. IRRIGATION LATERAL, DRY GULCH, CUT BANK, FILL AREA- 10 FT
LAKE, WATER COURSE, IRRIGATION DITCH, STREAM, WETLAND- 50 FT
SEPTIC TANK, DOSING TANK, VAULT OR PRIVY- N/A
0
1
2
3
4
5
6
7
8
9
10
FEET
DESIGN FLOW CALCULATIONS:
5 BEDROOM HOUSE: OCCUPANCY = 8 PERSONS
8 PERSONS X 75 GAL./PERSON/DAY = 600 GAL./DAY
(GARFIELD COUNTY REGS., TABLE 6-1)
SEPTIC TANK SIZING:
5 BEDROOM HOUSE = 1,500 GALLON MINIMUM SIZE
(GARFIELD COUNTY REGS., TABLE 9-1)
SOIL TREATMENT AREA SIZING:
LONG TERM ACCEPTANCE RATE IS BASED ON SOIL OBSERVATIONS IN THE VICINITY OF THE
PROPOSED LOCATION OF THE SOIL TREATMENT AREA. SOIL IS CLASSIFIED AS SOIL TYPE 2,
SANDY LOAM. A LONG TERM ACCEPTANCE RATE (LTAR) OF 0.60 GAL/DAY/FT2 IS APPROPRIATE
FOR THIS TYPE OF SOIL (GARFIELD COUNTY REGS., TABLE 10-1).
AREA REQUIRED = DESIGN FLOW/LTAR = 600 GPD/0.60 = 1,000 SQ. FT.
SIZE ADJUSTMENT FACTOR FOR APPLICATION TO GRAVITY TRENCH:
1,000 SQ. FT. X 1.0 = 1,000 SQ. FT. (GARFIELD COUNTY REGS., TABLE 10-2)
SIZE ADJUSTMENT FACTOR FOR APPLICATION VIA CHAMBERS:
1,000 SQ. FT. X 0.7 = 700 SQ. FT. (GARFIELD COUNTY REGS., TABLE 10-3)
EACH STANDARD CHAMBER IS 12 SQ. FT.; 700 SQ. FT. / 12 SQ. FT. = 58.33 SO USE 60 CHAMBERS
(3) TRENCH, 3 FT. X 80 FT., 20 CHAMBERS PER TRENCH PLUS INLET/OUTLET ENDS
PROFILE TEST PIT LOG:
NOT TO SCALE
TESTING PERFORMED BY BCE ON 06/17/2025
(0'-10") LOAMY TOPSOIL W/ ROOTS & ORGANICS
(10"-8') SANDY LOAM W/ MIXTURE OF SMALL TO
MEDIUM SIZED COBBLES
NO BEDROCK OR GROUNDWATER ENCOUNTERED TO 8'
INFILTRATOR WATER TECHNOLOGIES QUICK4 STANDARD CHAMBER
TRENCH CONFIGURATION
60 CHAMBERS TOTAL IN 3 TRENCHES, EACH 80' LONG
(NOT TO SCALE)
4' MIN
3'
STANDARD CAPACITY END PLATES (TYP.)
STANDARD CAPACITY CHAMBERS
INSPECTION PORT TO BE INSTALLED AT FIRST
& LAST CHAMBER IN EACH TRENCH (TYP.)
3'
4' MIN
3'
4 HOLE D-BOX W/ RISER
HOME
EXISTING CLEANOUT WITHIN 5' OF THE BUILDING
EXISTING INFLUENT LINE
4" DIA. SDR 35 SOLID PVC PIPE, MIN. 1% SLOPE, FROM TANK TO S.T.A.
1,500 GAL. MIN., TWO COMPARTMENT SEPTIC TANK.
TOP VIEW - TANK & CONVEYANCE LINES
NOT TO SCALE
80' (TYP.)
20 CHAMBERS PER TRENCH
PLUS INLET/OUTLET ENDS
(36" WIDE TRENCH)
34"4' MIN.34"
12"
NATIVE BACKFILL
INFILTRATOR WATER TECHNOLOGIES
QUICK4 STANDARD CHAMBER
TYPICAL TRENCH DETAIL
SECTION VIEW
(NOT TO SCALE)
8" INVERT
4' MIN.34"
MIN. 12" COVER
TOPSOIL
(36" WIDE TRENCH)(36" WIDE TRENCH)
MIN. 24"
MAX. 48"
SCARIFY SURFACE OF IN-SITU SOIL & AVOID COMPACTING WITH EQUIPMENT (TYP.)
1% MIN
2% MIN
HOUSE/GARAGE
OWTS PROFILE SCHEMATIC
NOT TO SCALE
SEPTIC TANK OF
MIN. SIZE
SPECIFIED
HEREIN
4" DIA. SDR 35 PVC SOLID PIPE,
FROM TANK TO S.T.A.
4" DIA. SCH. 40 PVC SOLID PIPE,
FROM TIE-IN LOCATION TO TANK
FINISHED FLOOREXISTING CLEANOUT
FINISHED GRADE
SOIL TREATMENT AREA (S.T.A.)
SEE DETAIL & SECTION HEREIN
48"
53"
(EFFECTIVE LENGTH)12"
11.5" OUTLET END*
(EFFECTIVE LENGTH)
TOP VIEW
SIDE VIEW END
VIEW
34"
QUICK4 STANDARD MULTIPORT
END CAP
34"
12"
INSPECTION PORT
16"
15" INLET END*
(EFFECTIVE LENGTH)
8" INVERT
INFILTRATOR WATER TECHNOLOGIES
QUICK4 STANDARD CHAMBER
PRODUCT SPECIFICATIONS
(NOT TO SCALE)SYSTEM MAINTENANCE:
IT IS RECOMMENDED TO MINIMIZE
KITCHEN DISPOSAL USAGE, INTRODUCE
NO FOREIGN CHEMICAL COMPOUNDS,
CONSERVE WATER USAGE AND TO HAVE
THE SEPTIC TANK PUMPED, THE SYSTEM
INSPECTED & MAINTAINED EVERY YEAR.
ALL MAINTENANCE IS THE RESPONSIBILITY
OF THE OWNER. WITH PROPER CARE AND
MAINTENANCE THIS SYSTEM SHOULD
LAST MANY YEARS. IF YOU HAVE ANY
QUESTIONS OR CONCERNS ABOUT YOUR
SYSTEM PERFORMANCE OR
MAINTENANCE, CONTACT A LICENSED
SEPTIC PROFESSIONAL.
ALL SYSTEM PIPING, EXCEPT FOR DISTRIBUTION LATERALS WITHIN THE SOIL TREATMENT
AREA, MUST BE BEDDED WITH SELECT MATERIAL BEFORE FINAL INSPECTION BY THE LOCAL
PUBLIC HEALTH DEPARTMENT. SELECT BEDDING MATERIAL MUST CONSIST OF LOOSE,
GRANULAR MATERIAL, FREE FROM STONES, CLODS, FROZEN SOIL, OR OTHER DELETERIOUS
MATERIAL. SELECT MATERIAL MAY CONSIST OF ON-SITE JOB EXCAVATED OR IMPORTED
MATERIAL. BEDDING MATERIAL MUST BE MECHANICALLY COMPACTED TO SUPPORT PIPING.
ABANDONMENT OF EXISTING TANK:
1. A TANK MAY BE COMPLETELY REMOVED AND
THE PARTS DISPOSED OF SAFELY.
2. IF THE TANK WILL REMAIN IN PLACE:
- THE TANK MUST BE PUMPED TO REMOVE AS
MUCH WASTE AS POSSIBLE.
- THE BOTTOM OF THE TANK MUST BE BROKEN
SO THE TANK NEITHER FLOATS NOR FILLS WITH
WATER.
- THE TOP MUST BE COLLAPSED AND THE SIDES
MAY BE BROKEN INTO THE VOID.
- THE REMAINING VOID MUST BE FILLED WITH
GRAVEL, SAND OR COMPACTED SOIL.
- THE FILLED EXCAVATION WILL BE GRADED TO
SURROUNDINGS, ALLOWING FOR SETTLING.
GARFIELD COUNTY REGS., 43.9.C.
EXISTING INFLUENT LINE
GARFIELD COUNTY REGS., 43.10.F.6.E
THE TOP OF INSPECTION PORTS MAY BE TERMINATED BELOW THE FINAL GRADE IF EACH IS HOUSED IN A COMPONENT
SUCH AS A VALVE BOX FOR A LAWN IRRIGATION SYSTEM AND HAS A REMOVABLE COVER AT THE GROUND SURFACE.
AT ANY POINT DURING INSTALLATION
IF THE INSTALLER ENCOUNTERS A
SOIL HORIZON, GROUNDWATER
DEPTH, OR BEDROCK DEPTH THAT
DIFFERS FROM THAT SHOWN ON
THIS DRAWING, NOTIFY E.O.R.
TWO COMPARTMENT SEPTIC TANK OF SIZE SPECIFIED HEREIN.
LEVEL GRADE AND PROOF COMPACT OR BED BOTTOM OF EXCAVATION
TO ENSURE LEVEL AND STABLE INSTALLATION
24" MIN
4" MIN
20" MIN
AS CONDITIONS
REQUIRE
VAULT INLET PORT
EFFLUENT DISCHARGE TO S.T.A. - 1% MIN SLOPE
INSTALL POLYLOK EFFLUENT SCREEN OR NSF
CERTIFIED EQUIVALENT
SET RISER ADAPTER IN RAM-NECK
OR MASTIC ADHESIVE SEALANT
PVC RISER OSI MOD. #RR24 x 30"± W/
GROMMET(S). (BOND TO TANK ADAPTER W/
RECOMMENDED ADHESIVE OR EQUIVALENT)
MUST BE WATERTIGHT
INSULATED FIBERGLASS GASKETED LID W/
STAINLESS STEEL BOLTS. OSI MOD. #FL24GV.
USE FL30GV IN MANHOLES > 2' DEEP
SLOPE GROUND AWAY
FROM RISER (TYP.)
TANK BAFFLE
INLET TEE
FROM HOUSE
TYPICAL SEPTIC TANK
NOT TO SCALE
1,500 GALLON MIN.
2 COMPARTMENT
SEPTIC TANK
4" DIA. SCH. 40 SOLID PVC PIPE,
MIN. 2% SLOPE,
FROM TIE-IN LOCATION TO TANK
GARFIELD COUNTY REGS., TABLE 7-1, SUBNOTE 2
CROSSINGS OR ENCROACHMENTS MAY BE PERMITTED PROVIDED THAT THE WATER OR WASTEWATER
CONVEYANCE PIPE IS ENCASED FOR THE MINIMUM SETBACK DISTANCE ON EACH SIDE OF THE CROSSING. A
LENGTH OF PIPE SHALL BE USED WITH A MINIMUM SCHEDULE 40 RATING OF SUFFICIENT DIAMETER TO EASILY
SLIDE OVER AND COMPLETELY ENCASE THE CONVEYANCE. RIGID END CAPS OF AT LEAST SCHEDULE 40 RATING
MUST BE GLUED OR SECURED IN A WATERTIGHT FASHION TO THE ENDS OF THE ENCASEMENT PIPE. A HOLE OF
SUFFICIENT SIZE TO ACCOMMODATE THE PIPE SHALL BE DRILLED IN THE LOWEST SECTION OF THE RIGID CAP
SO THAT THE CONVEYANCE PIPE RESTS ON THE BOTTOM OF THE ENCASEMENT PIPE. THE AREA IN WHICH THE
PIPE PASSES THROUGH THE END CAPS SHALL BE SEALED WITH AN APPROVED UNDERGROUND SEALANT
COMPATIBLE WITH THE PIPING USED. OTHER METHODS OF ENCASEMENT THAT PROVIDE EQUAL PROTECTION
ARE ALLOWED. THESE METHODS MUST BE REVIEWED AND APPROVED BY THE LOCAL PUBLIC HEALTH AGENCY.
GARFIELD COUNTY REGS., 43.9.E.4
CLEANOUTS MUST BE PROVIDED AT INTERVALS WITHIN
THE BUILDING SEWER FROM THE STRUCTURE TO THE
TANK OF NOT MORE THAN 100 FEET. THE EFFLUENT PIPE
BETWEEN THE SEPTIC TANK AND SOIL TREATMENT AREA
IS EXEMPT FROM THIS REQUIREMENT.
NOTE A
(IF THIS DISTANCE EXCEEDS 100', SEE NOTE A)
Black Canyon Engineers
222 S Park Ave.
Montrose, CO 81401
970-568-5391
Support@BlackCanyonEngineers.com
www.BlackCanyonEngineers.com
IF NO P.
E
.
S
T
A
M
P
I
S
P
R
E
S
E
N
T
,
THIS IS A
D
R
A
F
T
S
E
T
A
N
D
SHALL N
O
T
B
E
U
S
E
D
F
O
R
CONSTRU
C
T
I
O
N
O
R
MATERIA
L
S
P
U
R
C
H
A
S
E
SP2
Coon OWTS
256 Old Native Lane
Glenwood Springs, CO 81601
Garfield County, CO
Single Family Residence
BCE052517
07/03/25
As Noted
1)OWNER/BUILDER/CONTRACTOR TO VERIFY
ACCURACY OF SEPTIC (O.W.T.S) PLANS WITH
ARCHITECTURAL & OTHER PLANS AND NOTIFY
ENGINEER OF ANY DISCREPANCIES PRIOR TO
EXCAVATION, CONSTRUCTION OR MATERIALS
PURCHASE.
2)THE ENGINEER SHALL BE NOTIFIED A MINIMUM
OF 5 BUSINESS DAYS IN ADVANCE VIA EMAIL AT
INSPECTIONS@BLACKCANYON
ENGINEERS.COM FOR INSPECTION AS PER
NOTES ON PAGE SP2.
3)THE ENGINEER SHALL BE NOTIFIED IF ADVERSE
OR POOR SOIL CONDITIONS OR WATER ARE
ENCOUNTERED UPON EXCAVATION. FURTHER
ENGINEERING MAY BE REQUIRED
4) VALID, ORIGINAL DOCUMENT ONLY WITH
EMBOSSED, SIGNED SEAL
5) ALL NOTES & REQUIREMENTS FROM PAGE SP2
APPLY TO PAGE SP1
6) ALL MEASUREMENTS TAKEN WITH BASIC
COMPASS, RECREATIONAL LASER RANGE
FINDER & GPS. ACCURACY IS LIMITED TO THAT
OFFERED BY STATED INSTRUMENTS
7) STATED DIMENSIONS TAKE PRECEDENT OVER
MEASURED/SCALED DIMENSIONS
8) TOTAL PAGES: 2
SIZE: ANSI D ("22 X 34")
DESCRIPTIONREV.DATE
07/29/2025