1031 Septic Plan Review 2014 PLAN REVIEW - SYSTEM COMPONENTS
City/Town /(/p/fit.. %�nl Application No. afitt b
Lot Number // Address /03/ (,sresf°� /"ie
NAME !-0/Y4 LNe ay/tor(9) tKee"-
ADRESS 7n3/ e�,PS>/u,Le/"1 /C.GG/J
TELEPHONE# ( C113 ) CS— %Cf/
DESIGN /
ENGINEER\SANITARIAN /t/al M/0511/1/
FACILITY DESIGNED FOR
A. v Single or Multifamily dwelling
#Bedrooms 9 Garbage Disposal yes___
no
Total Design Flow 5-5e gallons per day
B.
Other (describe)
Design Basis
Total Design Flow
COMMENTS or PROBLEMS:
S7/
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gpd
ITEMS TO NOTE:
Pipe diameter
Schedule of pipe
Watertight joints
BUILDING SEWER
y„
1/ ) P✓G
Slope (min for 4" pipe is 0.01 or 1/8" per foot; desired slope is 0.02
or 'G" per foot) p
✓//Invert
elevation at building ! 7. !-7
6'
i Length X I
Alignment and grade
(manholes required at changes in both alignment and grade.)
Manhole(Must have metal frame and cover at grade)
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SEPTIC TANK
Tank size at least 200 % of design flow
(minimum tank size is 1,500 gal)
2"-3"drop from inlet to outlet
Minimum 4' liquid depth
Tees extend 6" above flow line
Inlet tee 10" below flow line(minimum)
Air space (3"above tees, 9" above flow line)
Depth of outlet tee(minimum 14")
Access manhole over center of tank and each tee
Number of compartments= 1
Gas baffle on new construction
Septic tank detail provided
Buoyancy calculation (if necessary)
On 6" crushed stone
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ITEMS TO NOTE:
Inlet elevations
Outlet elevations
Drop (inlet- outlet)
DISTRIBUTION BOX
Sump (6" minimum) Baffle oriel tees
/�v All outlets at same elevation ventilation
'" Manhole cover to grade #of outlets ✓
r/its size of outlets (diameter)
r/ Distribution laterals: No. 5 Size V"
Detail Provided
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LEACH FIELD
Items to note:
Dimension of field(s): Length 7r Width
✓Number of fields / Field separation (10 ft. min)
Total area provided for disposal (sq.ft.)
(1 x w x no. of fields)
Gallons of treatment provided:
Bottom area x loading factor (from 15.242) = 3-.7/ gal.
(must be equal or greater than design flow)
Note: Leaching area must be increased if garbage grinder is used.
Elevation of bottom of the field 95 od
(must be 4 ft/or 5 ft above max. high groundwater depending on perc rate.)
Number of distribution pipes 5 _S / ! SP?
!-Type 5/' Pit Sher%/i 'W`prhke- �
j/ Length(100'max.) yO'
✓ASlope (min. 0.005) /
Spacing(6' max.) L7
17-Depth
th of stone beneath pipe / "
_Olin
6")
✓
Plan states stone is double washed
cover of 1/8" to 'A" stone over pipe crown
vEnds capped
(—Aggregate depth 6" minimum and 12" maximum
/Depth of cover material above stone (min.9")
L./Construction of leaching facility in fill? Yes No
Fill is specified as TitleV on plan
(/Certification on fill submitted
Fill is specified for 5' around entire system
1/-8;paration between lines (6 ft maximum)
Separation between lines and edge of bed- four feet maximum.
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LEACHING TRENCHES
Number of trenches ,length (max.100')width_(min.24)
Depth of stone beneath pipe (6" min)
Leaching area available
bottom=length x width x no. trenches=
sides =length x depth (2'max) x w x#of trenches sq ft.
TOTAL= sq ft.
note: the effective depth shall be equal to the depth of the trenches below
the invert of the distribution pipe up to maximum of 2 ft.
Leaching are requirements.
Total leaching area (bottom plus sides) x loading factor= gallons treated
Loading factor is based on pert rate(see 15.242)
Total gallons treated by system design must be> design flow for system
LEACHING AREA REQUIREMENTS SATISFIED? Yes ,No
(note: leaching area must be increased if garbage grinder is used)
Ground water elevation: 4 feet or 5 feet separation
between trench bottom and max. high groundwater.
Trench spacing 3 x effective width or depth whichever is greater
Trench width 4 ft maximum
_ Pipe slope (min. 0.005 slope, or 6" per 100 feet)
Backfill depth (min. of 9")
Ends capped
_ Distribution lines exceeding 50 ft are vented.
Diameter of distribution pipe (min.3")
Distribution line orifice (min.318, max 'A")
The area between trenches shall be designated as reserve area only where
the separation distance between the excavation sidewalls is at least six feet.
Fill is specified as Title V on plan
Certification on Fill submitted
Fill is specified for 5" around entire system
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PLAN REVIEW CHECKLIST
GENERAL INFORMATION
CHECK TO VERIFY THAT THE PLAN INCLUDES THE FOLLOWING REQUIRED
INFORMATION:
MAS G. SANITARIAN
Scale of I"=40' for plot plan
MASS. P.E. stamp and signature
Scale of 1" =20' for system component details
Legal boundaries of the facility being served including easements
which could affect the impact the system installation/performance.
dwellings, buildings existing and proposed impervious areas
L{ocation of all existing and proposed impervious areas
t/fication and dimensions of the system including reserve area
f�sign calculations: Sewage flow 550 gpd
Septic tank size required J/00 gpd
" " provided /goo gpd
1----1-si�orth arrow, existing and proposed contours
t- Location and log of deep hole observation test
date of test
�us• get;; gory
existing grade elevations for each test
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PLAN REVIEW CHECKLIST(cont.)
Name of approving authority representative G✓uSr✓i1
Name & approval no. of soil evaluator (, / am/0 0AI
// Location and results of perc test
/. //Date of perc test 512/At
v/Location of water lines and other subsurface utilities on facility
t. Observed groundwater elevation in vicinity of the system
complete profile of the system
A note on the plan listing all variances to the provisions of
310 CMR 15.00 and local requirements sought in conjunction with the plan
V
Location and elevation of benchmark within 50 to 75 feet of the facility
which is not subject to dislocation or loss during conjunction of the facility
If dosing system is proposed:
complete design and specifications of the system
dosing chamber capacity; required , provided
number of dosing cycles,
depth of cycles
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PLAN REVIEW CHECKLIST (CON'T)
Recirculating Sand Filters
�1124 Complete plans and specifications
hydraulic profile
location of the treatment works and nearest existing street
street and lot number
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Dimensions L x W x D =Vol.
DOSING TANK
Number/size of siphons
Number and size of pumps (No. , Capacity gpm
Discharge size
Manholes to grade
Groundwater elevation (min. 1 ft below inlet)
Pump controls
Alarm(on separate power circuit)
Buoyancy calculations (if needed)
Pump system calculations
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ITEMS TO NOTE
Manufacturer
Installation
LEACHING CHAMBERS/PITS
Bed Formation
Number of beds of trenches Length
Width
Depth
Leaching area available:
bottom: (length x width x no. of pits) =
sides: (2 x(length x depth (2'max.)+(2 x (width x depth (2'max)x#of pits.
Total leaching area available= sq. ft.
LEACHING AREA REQUIREMENTS:
Total leaching area (bottom+sides) x loading factor from 15.242
gals. This must be greater than or equal to the design
Bow for the system. Increase leaching area if garbage grinder is used.
Distribution
Trenches: every 20 feet
Beds: area for pipe not to exceed
60 x 60 feet
Spacing Trenches: 2 x effective depth or width
Beds: 4 feet between excavation sidewalls.
Manholes (min-one 20" access per unit; a 24"diam for> 2,000 gal units)
Stone around chamber ('12" to 48"of 3/4 " to 1 %"stone)
2" cover of 1/8" to '/z' stone
4' separation between max. high GW and trench bottom? Yes No
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PLAN REVIEW-SYSTEM SITING
Performed By Approval#
Witnessed By. Date
Location Address or
Lot Number:
Office Review
Owner's Name,
Address and
Telephone No.
Published Soil Survey: NO YES
Year Published Publication Scale Soil Map Unit
Drainage Class Soil Limitations
Surficial Geologic Report Available: No Yes
Year Published Publication Scale
Geologic Material(Map Unit)
Landform
Flood Insurance Rate Map:
Above 500 year flood boundary No Yes_
Within 500 year boundary No Yes
Within 100 year flood boundary No Yes
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Wetland Area:
National Wetland Inventory Map(map unit)
Wetlands Conservancy Program Map(map unit)
Current Water Resource Conditions (USGS): Month
Range: Above Normal
Other References Reviewed:
Normal Below Normal
Minimum setback distances (where applicable) shall be shown on the plan for the proposed
disposal facility (septic tank and soil absorption system.)
Property line 10 10
Soil Absorption
Septic Tank System(SAS)
Cellar wallfinground
/swimming pool 10 20
Slab Foundation 10 25
1/Water supply
pressure line 10 10
Surface waters
(except wetlands) 25 50
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Septic Tank SAS
v Bordering vegetated
wetlands, salt marshes,
inland and coastal banks 25 50
/SURFACE WATER SUPPLY
//Reservoirs and impoundments 400 400
✓ Tributaries to SWS 200 200
-"Wetlands bordering SWS or
tributaries thereto
I./ Certified Vernal Pools
, 4ivate water supply well
or suction line
100 100
100 100
50 100
PUBLIC WATER SUPPLY WELL
Gravel packed 400 400
Tubular 250 250
Irrigation well 10 25
Open, subsurface, or
surface drains which
discharge to SWS or
tributaries thereto 50 100
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Septic Tank
Soil Absorption
System
Other open, surface or
subsurface drains (ex-
cluding foundation drains)
which intercept seasonal high
groyndwater 25 50
Other open,surface of
subsurface drains (ex-
cluding foundation drains 5 10
v Leaching and catch
ynisins & drywells 10 25
Downhill slope N/A 15' (min)to
top of
3:1 slope
L-
' Inspection Port(s)
(/Magnetic Tape
Correct#of deep hole per code revision
Note: slope stabilization shall be provided(including
retaining walls)when an adjacent downhill slope
to a disposal facility is greater than 3:1.
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EFFLUENT LOADING RATES
(gpd/sq.ft./day)
PERC.RATE SOIL CLASS
(min./in.) CLASS I CLASS D CLASS III CLASS IV
<5 0.74 0.60
6 0.70 .0.60 - -
7 0.68 0.60 - -
8 0.66 0.60
10 - 0.60
15 0.56 0.37 -
20 0.53 0.34
25 0.40 0.33 -
30 0.33 0.29
Loading criteria listed below apply only to the upgrade of existing systems pursuant
to 310 CMR 15.405 (1)(c ) or systems constructed pursuant to 310 CMR 15.417
40 0.25
60 0.15
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