HomeMy WebLinkAboutOWTS Designi
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INSPECTIO
WELL (TYP)
13" TALLARC 3
CHAMBERS (TYP.)
12"-24" OF COVER
FLOWLINE 4" PIPES=6246.00' 750
(15 UNITS
�LECTRIC 4" SCH 40 PVC
EASEMENT SEWER SERVICE
2% SLOPE MIN.
0
PROFILE
13.5 LF 4" SCH PIT #2 '�� PROFILE
PVC SEWER SERVICE PIT #1
2% SLOPE -� ' ' RADE DRAINAGE
4" SCH 40 PV SWALE TO DIVERT
SEWER SERVICE UPSTREAM RUNOFF
MIN. SLOPE 2% s AROUND FIELD
-3-WAY DISTRIBUTION
SEWER CLEANOUT BOX (CONTRACTOR TO GET ENGINEER
ELEV.=6247.57' APPROVAL OF DETAIL)
FLOWLINE=6246.73'
6200
WATER SERVICE
FLOWLINE
ELECTRIC
PROPERTY LINE
EASEMENT
SEWER SERVICE
LIMITS OF DISTURBANCE
® WELL
M, UTILITY POLE
DUSTING rnN WOJ
w
w
E
E
- PROPOSED GRAVEL
EXISTING GRAVEL
GRAPHIC SCALE
(IN FEET)
1 inch = 20 ft.
D
1. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE GARFIELD COUNTY
REGULATIONS OF ONSITE WASTE WATER TREATMENT SYSTEM (OWTS)
REGULATIONS, EVEN THOUGH ALL SUCH REQUIREMENTS ARE NOT SPECIFICALLY
NOTED ON THE DRAWINGS. THE CONTRACTOR SHALL BE RESPONSIBLE FOR
SUCH SPECIFIC DETAILS AS ARE REFERRED TO IN THE ABOVE MENTIONED
REGULATIONS.
2. WASTE WATER FLOW (TABLE 6-1):
SINGLE FAMILY HOUSE (3 BEDROOMS)
(75 GAL/PERSON/DAY X 2 PERSONS X 3 BEDROOMS)
DESIGN FLOW = Q = 450 GALLONS/DAY
3. SEPTIC TANK:
MINIMUM TOTAL TANK SIZE (TABLE 9-1):
3 BEDROOM = USE 1000 GALLONS
INSTALL ONE 1000 -GALLON TANK WITH BAFFLE
***INSTALL BIO -FILTER IN SEPTIC TANK OUTLET{**
4. SOIL TREATMENT AREA (SQUARE FEET) REQUIRED = DESIGN FLOW (SAI /DAY)
LTAR (GAL/DAY/SF)
SOILS ANALYSIS PERFORMED BY GEOTECHNICAL ENGINEERING GROUP OBSERVED
SOME PERCOLATION TESTING. THE PIT P-2 WAS EXCAVATED TO 8 FEET AND
FOUND THE SOILS TO BE POORLY SORTED CLAYEY SAND TO SANDY CLAY WITH
GRAVEL WITH NO GROUNDWATER ENCOUNTERED. THE SOILS HAVE BEEN
CLASSIFIED BE GEOTECHNICAL ENGINEERING GROUP AS SC/CL USING THE UNIFIED
SOIL CLASSIFICATION SYSTEM.
THIS FALLS WITHIN SOIL TYPE 2 ACCORDING TO TABLE 10-1. LTAR FOR SOIL
TREATMENT LEVEL 1 IS 0.60.
= 950 GPD = 900 SF
0.50
SIZE ADJUSTMENT FACTOR FROM TABLE 10-3:
USE 0.7 FOR A LEVEL 1 TRENCH CHAMBER SYSTEM
= 1200 x 0.7 = 630 SF
AREA OF THE ADS ARC 36 CHAMBERS (60 INCHES x 34 INCHES)= 14.17 SF
= 630 SF/14.17 SF = 44.5 UNITS -> USE 45 UNITS
(3 TRENCHES X 15 CHAMBERS).
4. SOIL INVESTIGATION INFORMATION WAS PROVIDED KUMAR AND ASSOCIATES,
INC. (PROJECT NO. 22-7-113) ON APRIL 25, 2022. THE SOIL DESCRIPTION
AND CLASSIFICATION FROM A PROFESSIONAL GEOTECHNICAL ENGINEER
RESULTS IN A LONG-TERM ACCEPTANCE RATE OF 0.50 GAL/DAY/SQUARE
FOOT. FROM TABLE 10-1 THE SOIL IS CLASSIFIED AS SOIL TYPE 2A AND
REQUIRES TREATMENT LEVEL 1.
5. CLEAN OUTS ARE REQUIRED AT ALL BENDS AND AT LEAST EVERY 100 FEET
ALONG THE GRAVITY SANITARY SEWER LINE.
6. THE CONTRACTOR SHALL BE RESPONSIBLE FOR INSTALLING ALL WATER TIGHT
COMPONENTS, PRIOR TO THE ABSORPTION AREA, TO PREVENT INFILTRATION.
7. TOPSOIL COVER MAY BE VARIED (WITH 1 FOOT MINIMUM) TO ALLOW
LANDSCAPING.
8. INSTALL RISERS AS NECESSARY TO BRING ALL ACCESS POINTS TO WITHIN
ONE-HALF FOOT OF FINAL GRADE.
9. LOCATIONS OF ALL COMPONENTS MAY BE VARIED AS NECESSARY AS LONG AS
ALL MINIMUM DISTANCES AND SLOPES MEET THOSE REQUIRED.
10. PROVIDE POSITIVE DRAINAGE OF SURFACE WATER AWAY FROM ABSORPTION
FIELD AREA USING DRAINAGE SWALES AS NECESSARY.
11. THIS DRAWING DOES NOT CONSTITUTE AN OWTS PERMIT. PERMIT MUST BE
OBTAINED FROM APPROPRIATE COUNTY OFFICIALS. THE ENGINEER MUST
OBSERVE CONSTRUCTED SYSTEM BEFORE BACKFILL AND PROVIDE REPORT TO
COUNTY.
12. 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.
13. INSTALL BLUEBOARD INSULATION OVER SEWER PIPE WHEREVER DEPTH IS LESS
THAN 5.0 FEET.
14. THE ENGINEER SHALL BE CONTACTED FOR SITE INSPECTION PRIOR TO
BACKFILLING OF SYSTEM COMPONENTS.
15. THIS SYSTEM IS DESIGNED FOR TYPICAL DOMESTIC WASTES ONLY. OWNER IS
RESPONSIBLE FOR TIGHT PLUMBING FIXTURES. I.E. HISSING TOILETS AND
RUNNING WATER IS NOT ACCEPTABLE AND MAY OVERLOAD THE DESIGNED
SYSTEM.
16. HIGH COUNTRY ENGINEERING RECOMMENDS CONCRETE SEPTIC TANKS.
16 MINIMUM GRADE OF SEWER SHALL BE 1/4" PER LINEAR FOOT.
tT.0 w:�•' • ',� • •
1. ABSORPTION TRENCH SHALL NOT EXCEED 100 FEET IN LENGTH.
2. THE BOTTOM OF THE ABSORPTION TRENCH SHALL BE LEVEL
3. DRAINAGE DITCHES ARE TO BE PROVIDED ABOVE AND AROUND TRENCH, AS
NECESSARY, TO PREVENT SURFACE RUNOFF CHANNELIZED FLOW FROM
ENTERING THE ABSORPTION AREA.
4. ABSORPTION TRENCH BOTTOM AND SIDEWALLS MUST BE RAKED TO REMOVE
SOIL SMEARS INCURRED DURING EXCAVATION.
5. NO EXCAVATION OF ABSORPTION FIELD IS TO BE DONE DURING WET WEATHER
AND USE OF RUBBER TIRE VEHICLES OVER BED AREA IS PROHIBITED TO
MAINTAIN GOOD SOIL STRUCTURE.
6. UNSUITABLE MATERIAL EXISTING WITHIN THE TRENCH SHALL BE EXCAVATED
AND BACKFILL SHALL CONSIST OF ONSITE SELECT OR PIT -RUN MATERIAL
Are 38, Are 36 LP and Are 38 IIC Chambers are an economical,
easy -to -install alternative to the conventional on-site leachfield
system. In a conventional on-site leadtfield system, 4 -inch pipe
and gravel are used to fill the excavation. The Arc chamber
units eliminate the need for gravel, thereby reducing many of
the problems inherent in gravel systems, including compaction,
loss of storage, and fines. The open bottom design of the Arc
chamber maximizes infiltrative surface area, while its structural
design erasures long-term trench integrity. As allowed by state
or local codes, chamber system designs commonly result in
sizing credits that reduce the leach field area required within
the field footprint- This affords a decrease in machine time,
trucking costs, and labor to the installer and increased usable
lard to the homeowner, and developers.
Trench Instaltatiun Guidelines
1. Excavate trench to proper width and depth watt
as described in the design and nxp*ed l
by state and local codes. Excavation and '
proper elevation should be set according to w.
a permit formulated from a soil evaluation by
the local health department, soil scientist, or
engineer. For any traffic condition up to an
AASHTO H-10 (16,000 lbs/axle) maximum
load limit, the mintim rn cover over the worm ( '
of all Arc chambers shall be 12 inches, The
total minimum trench depth, when measured to the bottom of the
chamber, shall be 14 inches for the Are 36 LP, 18 inches for the
Arc 36 and 22 Itches for the Arc 36 HC, in non -traffic apphcatkxvk
For trench installations, a minimum 3 -foot wide trench is required
for the Arc 36. Arc 36 LP and Arc 36 HC. Reference system design
and state or local codes for minimum separation specifications
between trench lines.
2. Smooth irregularities in the excavation and trench bottom and
clear any large rocks or debris from the bottom of the trench.
Scarify the soil if smearing is present. Arc by Infiltrator recommends
all drainfield trench bottoms or absorption beds should be prepared
level. Any allowed slope or fall should be determined and based on
your state or local codes.
Chamber Assembly
3a. Install the fast
chamber with the
"dome end" (A) of the
at
the header end of the
trench. Please
reference the installation
directional arrows which
are located on the top
of the chamber
inspection part.
3b_ Assemble all Arc chambers in the trench excavation by first
placing the "dome end" of the incoming chamber over the "cost
end" (B) of the chamber already in peace. Raise the post end of
the Incoming chamber arca slightly pull the chamber back until the
dome stops and is locked into the post end joint.
3c. The trench area in frond of the base should be free of noCAs,
soil clomps or other obstructions to
ensure proper base ft and "lock & drop"
joint chamber englagement. A positive
connection to the "lack & drop" joint will
occur when the incoming chamber is laid
flat on the trench bottom.
3d. A'push-out" tab is located on the
'post end" of each chamber. This tab
should be utilized at the end of each
trench tine run to prevent soil migration
from entering the septic system- Press
he 'push -our tab over the "post end"
p until it snaps into place.
3e. AN Arc chambers are designed with
n articulating joint that allows for a free
3nge horizontal rotation of 20 degrees, .
,ith a maximum of 10 degrees in either
.,Erection. Do not over -rotate the jointa
eyord 10 degrees. Each Arc chamber
Is equipped with the "lock & drop" joint
which will allow Lip to 10 degrees of
rotation per five toot chamber section.
3f. The Arc 36 and Are 36 HC chambers
offer a Side Port Co2
uple (SPC) accessory_
Installation of the SPC wig increase trench
radius of up to 10 additional degrees of
articulation in either direction or increase
plumbing inlet options. This unit can be
Installed between any two Arc 36 or Arc
36 HC chambers within the trench tine
or at the end of a run with the universal
exicap.
4. Prior to installing the endcaps, remove
the appropriate knockouts for pipe'
connections by placing the endcap face
down an a hard surface and cutting with
either a hole saw or utility knife. Wh
hole saw is used to create a pipe o;_
centering pilot dimples are placed in
the middle of each knockout for the
holo saw bit. The knockout will accept
4" SDR 35, 4" Schedule 40 pipe, 4" Arc
by Infittrator-3000 TripteWair Pipe, or
4' Arc by Infiltrator Leach Bed pipe. 3"
options are denoted by the inner ring PPOW
knockout Inlet pipe must not exceed 2
inches in length beyond the encicap. Inlet pipe extending beyond 2
Itches will interfere with the chamber and hinder erricap assembly.
Upper knockouts shall be used for Net piping. Lower knockouts
we provided for return lines at continuous circuit piping in bed or
mound systems.
& Piece lip of andcap over the end of the
Chamber unit and snap into place. 'Secure
in place with backfill. The universal ehdc:ap
is designed to fit both ends of any, Arc
chamber. The endcap shall be placed so
that the Arc logo faces outward. Receiving
pockets for 6"x8" splash plates are
incorporated into every endcap.
Contact Infiltrator Water Technologies` Technical Services Department for assistance at 1-800-221-4436
Table 10-1 Soil Treatment Area Long-term Acceptance Rates by Soil Texture, Soil Structure,
Percolation Rate and Treatment Level
NOTE: Shaded areas require system design by a professional engineer.
1 Treatment levels are defined in Table 6-3.
Higher long-term acceptance rates for Treatment Level 3N may be allowed for OWTS required to have a discharge
permit, if the capability of the design to achieve a higher long-term acceptance rate can be substantiated
& Where requited by tical codes a splashn
Pie shall be placed under the kdel end of
the dtern6ete. Each endcap is equipped
VAh ttplaeft plate receiving pockets_ Place
this splash ply into the positioning fins
prior ID andeap ateernbly_ Connect serial or
manlfold Ines of the charnbers In the same manner as described in
steps 4 and Sabove.
7. All Arc chambers offer slots on the 'post end" to acconvnedate
zip straps in order to hang pressure dosing pipe_ Where pressure -
dosing pipe Is used, andcaps should be prepared with a hole saw
to adequately accommodate the outside diannoter of the dosing
per•
8. An easy -knockout Inspection port is provided on the roof aspect
of each Arc 36, Are 36 LP, and Arc 38 HC chamber. Once the
knockout is removed, the resulting opening well accept 4" SDR
35 (4.5' O.D.) or 4" Schedule 40 (4215' O.D.) pipe. The Scaedulle
40 pipe may require moderate coaxing with a rubber malet. Are
chamber Inspection ports are labeled with both size knockout rlhgs-
� 7 ` Vi
'pip
I�
�. tn•d4M Naar, r.:
9. Fill side o top of ci alive moil r, -
fib where requirooll- Fit shat be ccxrhpaaW to the minimumsi
requirements neoeaaary for the sill type used. 'walking in" the sell
is an acceptable means for achieving the compaction level along
the sides of the chamber.
10. Complete the backfill of theSystem
with native soil or select fill to the depth
specNed in the system design and as
required by state and local codes. Avoid
Iwo racks and debris In backfill material,
as they may evanhraly krgalge on the
chamber. As common practice, avoid drMng any equipment over
the dwrbers prior to final backfill. Where vehicular loading will
be anticipated, all Arc 36, Arc 36 LP and Arc 36 HC chambers are
approved for AASHTO H-10 (16,000 Ibs/axk) loading when installed
with a minimum of 12 inches to a maximum m of 8 feet of cover alter
OrrlBelda11011.'
11. When preparing the final grade,
gran, 00 be such that stormwatfx is
diverted away from the drainfieid. System
final grade should be crested or sloped. W '
hover left flat or concave. Channel stone
and downspout water away from the
dkainfield. Frral grading should be slightly to moderately limited sell
to help maintain an aerotaic state in the drafriffiel d. Venting is not
required, but is recommended to promote oxygen access to the
drainfield_ Venting practices may be required by state or local code.
NOTE Cower height and live loading limits she kiprclad by both will type
and compaction requirements. Arc by Infiltrator should be contacted when
par alis ere encountered or, if unknown, when M heights eraased 2 feet.
Bed Installation Guidelines
1- Excavals bed to proper w k lh
and depth as described In 1he
design mad as required by stalle
and local code. Far any tndit
condition up to an AASHTO H-10
(16,000 lbs/axle) maximum load
limit, the minimum cover over the
crown (top of chamber) of the
chamber shall be 12 inches.
2_ Smooth inegularificis in the CA:: L, AI "i.0 Lio:Ar urry iuriie :o r
or debris from twh bottom of the bed. Slope of the bed shall be
determined based on state or local code.
3. For chamber assembly, see steps 3 through 10 in the Trench
Installation Guidelines above.
EDOMIF
� EM WITH
110,11LliCKLE`
On
Long-term Acceptance Rate (LTAR);
Soil Type, Texture, Structure and Percolation Rate Range
Gallons per day per square foot
ITS
POTABLE
USDA Soil
USDA Soil
Percolatfo
LAKE
DRY GULCH,
56" 53"
111" 60" 68"
W
Soil
WATER
Structure-
Structure
n Rate
Treafinenht
Treatmtarit
Treatrnerd
Treatment
Treatment
Type
USDA Soil Texture
Type
Grade
(MPI}
Levet 1'
Leve12'
Leve12N'
Level 3'
Level 3N"
LINE
CISTERN
IRRIGATION
INFILTRATION
R
_ >350i6 Rock (>2mm): See Table 10-1A
>35% Rock (>2mm): See Table 10-1A
1.40 1.40 1.55 1.55
1
-
Sand, Loamy Sand
Single
Grain
0
(Structureless)
5-15
0.80
STRUCTURE
WEND
PR
SEPTIC TANK, HIGHER
(Prismatic)
LEVEL TREATMENT UNIT,
502
102
25
5
10
2
Sandy Loom, Loam, Silt
BK
2 (Moderate)
DOSING TANK, VAULT
(Blocky)
3 (Strong)
16-25
0.60
1,0
1,0
1.1
1.1
102
502
GR
-
EFFLUENT LINES
(Granular)
STA TRENCH, STA BED,
l
Sandy Loam, Loam, Silt
PR, 8K,
1 (Weak)
UNLINED SAND FILTER,
SUB -SURFACE DISPERSAL
2A
Learn
GR
0
26-40
0.50
0.80
0.80
0.90
i 0.90
Massive
(Structureless)
LINED SAND FILTER
3
Sandy Clay Loam, Clay
Loam. Silty Clay Loam
Clay
PR, 8K,
GR
PR, BK,1
2, 3
41-60
0.35
0.55
0.55
0.65 f 0,65
LINED
3A
LL f, - _'i_ n
GR
0
61.75
0.30
0.45
0.45
0.55 0.55
EVAPO-TRANSPIRATION
_:.;;t
Massive
(Shwureless)
4
, ,; : c.'; . Ir,,
PR, 8K.
2,3
76-90
0.20
0.30
0.30
0.30
0.30
5
BERM OF LINED
GR
4A
a cr fJ Clay la' . - IIr
PR. BK.
GR
1
0
91-120
0.15
0.20
0.20
020
0.20
UNLINED SAND FILTER IN
Massive
(Structureless)
S
Soil Types 2�1A
Platy
1, 2, 3
121+
0.10
0.15
0.15
0.15
0.15
NOTE: Shaded areas require system design by a professional engineer.
1 Treatment levels are defined in Table 6-3.
Higher long-term acceptance rates for Treatment Level 3N may be allowed for OWTS required to have a discharge
permit, if the capability of the design to achieve a higher long-term acceptance rate can be substantiated
& Where requited by tical codes a splashn
Pie shall be placed under the kdel end of
the dtern6ete. Each endcap is equipped
VAh ttplaeft plate receiving pockets_ Place
this splash ply into the positioning fins
prior ID andeap ateernbly_ Connect serial or
manlfold Ines of the charnbers In the same manner as described in
steps 4 and Sabove.
7. All Arc chambers offer slots on the 'post end" to acconvnedate
zip straps in order to hang pressure dosing pipe_ Where pressure -
dosing pipe Is used, andcaps should be prepared with a hole saw
to adequately accommodate the outside diannoter of the dosing
per•
8. An easy -knockout Inspection port is provided on the roof aspect
of each Arc 36, Are 36 LP, and Arc 38 HC chamber. Once the
knockout is removed, the resulting opening well accept 4" SDR
35 (4.5' O.D.) or 4" Schedule 40 (4215' O.D.) pipe. The Scaedulle
40 pipe may require moderate coaxing with a rubber malet. Are
chamber Inspection ports are labeled with both size knockout rlhgs-
� 7 ` Vi
'pip
I�
�. tn•d4M Naar, r.:
9. Fill side o top of ci alive moil r, -
fib where requirooll- Fit shat be ccxrhpaaW to the minimumsi
requirements neoeaaary for the sill type used. 'walking in" the sell
is an acceptable means for achieving the compaction level along
the sides of the chamber.
10. Complete the backfill of theSystem
with native soil or select fill to the depth
specNed in the system design and as
required by state and local codes. Avoid
Iwo racks and debris In backfill material,
as they may evanhraly krgalge on the
chamber. As common practice, avoid drMng any equipment over
the dwrbers prior to final backfill. Where vehicular loading will
be anticipated, all Arc 36, Arc 36 LP and Arc 36 HC chambers are
approved for AASHTO H-10 (16,000 Ibs/axk) loading when installed
with a minimum of 12 inches to a maximum m of 8 feet of cover alter
OrrlBelda11011.'
11. When preparing the final grade,
gran, 00 be such that stormwatfx is
diverted away from the drainfieid. System
final grade should be crested or sloped. W '
hover left flat or concave. Channel stone
and downspout water away from the
dkainfield. Frral grading should be slightly to moderately limited sell
to help maintain an aerotaic state in the drafriffiel d. Venting is not
required, but is recommended to promote oxygen access to the
drainfield_ Venting practices may be required by state or local code.
NOTE Cower height and live loading limits she kiprclad by both will type
and compaction requirements. Arc by Infiltrator should be contacted when
par alis ere encountered or, if unknown, when M heights eraased 2 feet.
Bed Installation Guidelines
1- Excavals bed to proper w k lh
and depth as described In 1he
design mad as required by stalle
and local code. Far any tndit
condition up to an AASHTO H-10
(16,000 lbs/axle) maximum load
limit, the minimum cover over the
crown (top of chamber) of the
chamber shall be 12 inches.
2_ Smooth inegularificis in the CA:: L, AI "i.0 Lio:Ar urry iuriie :o r
or debris from twh bottom of the bed. Slope of the bed shall be
determined based on state or local code.
3. For chamber assembly, see steps 3 through 10 in the Trench
Installation Guidelines above.
EDOMIF
� EM WITH
110,11LliCKLE`
On
'"ill" ewert height can be aleft ned by anteing irm1llill inspect on port
4 0"
rc8MINMPalk TM4noW Pd 7®•� Cros4n
na®•6'h=Imo = Fax tin 877--7101
ngalPaneAsvr
1$421-44M- wrw.ineatiordeealw
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Cowis MkiiiiLowhiiiiipayno,Ca bospaskmuW[Kr'amns aridGt,euisow wp[uEand&o1 mw adMrrorlMawTdrnYgec
Potrhaas a frad®sdrat PartAk Yn.leF-VWS aayWaad lad0oiada'IJF•inE, lC knYat10loa�1•od lE7k 1c.
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we M -e f.7"1711111
TABLE 7-1: MIN. HORIZONTAL DISTANCES IN FEET BETWEEN COMPONENTS OF AN OWTS INSTALLED AFTER NOV. 15, 1973
ARC 2.6
AFSC ;x^ LP
ARG 35 HC
ITS
POTABLE
Inlet Outlet
PROPERTY
LINES,
SUBSURFACE DRAIN,
INTERMITTENT
LAKE
DRY GULCH,
56" 53"
111" 60" 68"
W
WATER
WATER
DWELLING
OCCUPIED
PIPED OR
IRRIGATION LATERAL
WATERCOURSE,
CUT BANK,
FILL AREA
SEPTIC
SUCTION
N
'"ill" ewert height can be aleft ned by anteing irm1llill inspect on port
4 0"
rc8MINMPalk TM4noW Pd 7®•� Cros4n
na®•6'h=Imo = Fax tin 877--7101
ngalPaneAsvr
1$421-44M- wrw.ineatiordeealw
uaiblorrc0.7588.1:5Ah7AaC47ea�k.4�kkn;Syg1.r1Q44e1,�4617aA47ti41�4es.77e:D�,B•aC•o�rAawMCixm 4,aey11114oldrpwapw9g6dilloor1,, be..
0W1Ck4.anti SkWNdWa•rokaYrdt♦d�sof•falwniwrrhleamgl6lr`trncall®tlradYouex� fell= walwtrworrhirwohowaagIf taO•_iroleimo.
Cowis MkiiiiLowhiiiiipayno,Ca bospaskmuW[Kr'amns aridGt,euisow wp[uEand&o1 mw adMrrorlMawTdrnYgec
Potrhaas a frad®sdrat PartAk Yn.leF-VWS aayWaad lad0oiada'IJF•inE, lC knYat10loa�1•od lE7k 1c.
021113WAV21tr ON TcdvwWgLx LLC. M"4Mraarxd.Rwmw1na.sA AHm e'f�l
we M -e f.7"1711111
TABLE 7-1: MIN. HORIZONTAL DISTANCES IN FEET BETWEEN COMPONENTS OF AN OWTS INSTALLED AFTER NOV. 15, 1973
AND WATER, PHYSICAL AND HEALTH IMPACT FEATURES
0• - (r
SPRING,
POTABLE
POTABLE
Inlet Outlet
PROPERTY
LINES,
SUBSURFACE DRAIN,
INTERMITTENT
LAKE
DRY GULCH,
56" 53"
111" 60" 68"
W
WATER
WATER
DWELLING
OCCUPIED
PIPED OR
IRRIGATION LATERAL
WATERCOURSE,
CUT BANK,
FILL AREA
SEPTIC
SUCTION
N
SUPPLY
SUPPLY
BUILDING
LINED
DRYWELL, STORMWATER
IRRIGATION
DITCH, STREAM,
(FROM
TANK
LINE
LINE
CISTERN
IRRIGATION
INFILTRATION
DITCH
STRUCTURE
WEND
CREST)
SEPTIC TANK, HIGHER
LEVEL TREATMENT UNIT,
502
102
25
5
10
10
50
10
-
DOSING TANK, VAULT
BUILDING SEWER OR
502
102
252
0
102
102
502
102
-
EFFLUENT LINES
STA TRENCH, STA BED,
UNLINED SAND FILTER,
SUB -SURFACE DISPERSAL
1003
252
25
20
10
25
503
25
5
SYSTEM, SEEPAGE PIT
LINED SAND FILTER
60
102
25
15
10
10
25
10
5
LINED
EVAPO-TRANSPIRATION
FIELD OR OUTSIDE OF
60
102
25
15
10
10
25
10
5
BERM OF LINED
WASTEWATER POND
UNLINED SAND FILTER IN
SOIL W/PERC RATE >60
MPI, UNLINED OR
PARTIALLY LINED
EVAPOTRANSPIRATION
SYSTEM, OUTSIDE OF
100
252
25
15
10
25
25
15
10
BERM OF UNLINED
WASTEWATER POND, OR
SYSTEM NOT RELYING ON
STA FOR TREATMENT
OTHER THAN AEROSOL
VAULT PRIVY
50
102
25
15
10
10
25
10
-
SLIT PIT CH PRIVY
100
502
25
N/A
25
25
100
25
N/A
SYSTEM NOT RELYING ON
STA FOR TREATMENT AND
1003
102
50
125
UTILIZING AEROSOL
10
0
253
10
10
METHODS
NOTE: The minimum distances shown above must be maintained between the OWTS components and the features described. Where soil, geological or other conditions warrant, greater distances
may be required by the local board of health or by the Water Quality Control Commission pursuant to section 25-8-206, C.R.S. and applicable regulations. For repair or upgrading of existing OWTS
where the size of lot precludes adherence to these distances, a repaired OWTS shall not be closer to setback features than the existing OWTS, as reviewed and approved by the local public health
agency. Components that are not watertight should not extend into areas of the root system of nearby trees.
1. Includes infiltration galleries permitted as wells by the Division of Water Resources.
2. Crossings or encroachments may be permitted at the points as noted above 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 undergrouihd sealant
compatible with the piping used.
3. Add eight feet additional distance for each 100 gallons per day of design flows between 1,000 and 2,000 gallons per day, unless it can be demonstrated by a professional engineer or
geologist by a hydrologic analysis or the use of a barrier, consisting of a minimum 30 mil PVC liner or equivalent, that contamination will be minimized. N effluent meets Treatment Level 3N and the
local public health agency has a maintenance oversight program in accordance with section 14.D. of this regulation, the distance addition is not required. Flows equal to or greater than 2,000 gallons
per day must be hydrologically analyzed for flow, velocity, hydraulic head, and other pertinent characteristics as means of estimating distances required to minimize contamination as part of the
Division site application process.
HMO 1000 Gallon Top seam % 2CR
1OQor
DESIGN NOTES
• Design per performance test per
ASTM C1227
• Top surface area 46.25 ft=
• f'c 0 28 days; concrete = 6,000 PSI
Min.
Installation:
• Tank to be set on 5" min. send
bed or pea gravel
• Tank to be backfilled uniformly on
all sides in lifts less than 24' and
mechanically compacted
• Excavated material may be used for
bockfitl, provided large stones are
removed
• Excavation should be dewatered and
tank filled with water prior to being
put In service for Installation with
water table lees than 2' below grade
• Meets C1644-06 for resilient
connectors
• Inlet and Outlet identified above pipe
• Ce+leered complete with internal
I;' a ing
• 4' Maximum bury depth
ALLOWABLE BURY
(Based on Water Table)
WATER TABLEALLOWABLE
EARTH FILL
0• - (r
p"
3. 0-
"3'1.
- 0•
if' Long x 7' Wide
Inlet Outlet
31 (r
-tr
4'-0"
DRY
4' - 0'
f
VIII
1` . sem"
.� •. ' Top
Y -10W
CfIrAalllla .,- -�
S NeNC fiLlon
View
Digging Specs
Invert
Dimensions
Net Capacity
Net Weight
if' Long x 7' Wide
Inlet Outlet
Length Width Height
Inlet Side Outlet Total Lid
Tank Total
56" below inlet
56" 53"
111" 60" 68"
687 gal 323 gal 1010 gal 2620 lbs
9380 lbs 12000 Itis
"Llmi
Z
r`
REMOVABLE PVC CAP -
INSTALL MARKER IF CAP
IS TO BE BURIED.
FINISH GRADE-.
0
Se
4" COUPLING
4" SEWER LINE
REMOVABLE PVC CAP
/DRILL 1 - 1/4"0 AIR HOLES
f IN EXPOSED PIPE
0
4" 0 CUT HOLE IN TOP OF
SOLID PIPE INFILTRATOR UNIT AT
/ OFNTER I INSPECTION INSTALLATION
WE WELL 4" RISER SIDES����\���GHENED \ -
4" 45' SWEEP BEND OUPL'liJ7G
0
O \Z 4" 0 PERFORATED PIPE
4"x4"x4" �cO
PVC WYE
CLEAN OUT
ASSEMBLY
SEWER_ CLEAN OUT DETAIL
M0!
INFILTRATOR UNIT
INSPECTION WELL DETAIL
N.T.S.