249 Lot5 Plan Review 2015 PLAN REVIEW - SYSTEM COMPONENTS
City/Town Kr,p 4(,,........,4,n..., Application No. A015-
LO-I-#5Lot Number AddressS I ve S 4-er .PCI
OWNER
,____2 NAME ,c, e f`tc..4k_wc... acio?.v.,e_;+—
OWNER
ADDRESS v .r.1-cf)N M A
TELEPHONE# ( (4 1 3 ) /47S - 6 6c
DESIGN
ENGINEER\SANITARIAN
FACILITY DESIGNED FOR
A. Single or Multifamily y dwellin
g
# Bedrooms Garbage Disposal yes
no > /
Total Design Flow 27//77, gallons per day P�'cCd
B. Other(describe) g9.� 4- ret v./el
Design Basis d. ,,ucie f‘ /e&cL7 ,«--•,I e/ ap-. /z
Total Design Flow irVO gpd
> Z/4/03"/ c/ AZ-
COMMENTS or PROBLEMS:
4pIieJ L
Pager 1 of 16
BUILDING SEWER
ITEMS TO NOTE:
Pipe diameter `i" Pri6
Schedule of pipe 5c4
Watertight joints
Slope (min for 4" pipe is 0.01 or 1/8"per foot; desired slope i 0.02
or 1/." per foot) 'Op?
Invert elevation at building7.5D
Length
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 °A) of design flow
(minimum tank size is 1,500 gal)
,�//
2"-3" drop from inlet to outlet q 7 340 /UYP1'
Minimum 4' liquid depth '77. d5
Tees extend 6" above flow line
Inlet tee 10" below flow line (minimum)
VAir 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 =
Gas baffle on new construction
Septic tank detail provided
/ Buoyancy calculation (if necessary)
V On 6" crushed stone
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DISTRIBUTION BOX
ITEMS TO NOTE:
V Inlet elevations ! •0
// Outlet elevations g /y3
VDrop (inlet-outlet) / 2 3
Sump (6" minimum) Baffle or inlet tee
°7'/ All outlets at same elevation ventilation
Manhole cover to grade # of outlets 2-
ize of outlets (diameter) q ft
eZs
Distribution laterals: No. Size q 14
I- Detail Provided
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LEACH FIELD , f t4
Items to note: �1
Dimension of field(s): Length 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)= 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
(must be 4 ft/or 5 ft above max.high groundwater depending on perc rate.)
Number of distribution pipes
Type
Length (100'max.)
Slope(min. 0.005)
Spacing(6' max.)
Depth of stone beneath pipe
(min 6")
Plan states stone is double washed
2" cover of 1/8" to %" stone over pipe crown
Ends capped
Aggregate depth 6"minimum and 12"maximum
Depth of cover material above stone(min.9")
Construction of leaching facility in fill? Yes No
Fill is specified as Titley on plan
Certification on fill submitted
Fill is specified for 5' around entire system
Separation 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 perc 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. 3/8, max '/")
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:
MASS. REG. SANITARIAN, or MASS. P.E. stamp and signature
Scale of 1"=40' for plot plan
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.
All dwellings, buildings existing and proposed impervious areas
Location of all existing and proposed impervious areas
Location and dimensions of the system including reserve area
Design calculations: Sewage flow gpd
Septic tank size required gpd
" " "provided
gpd
North arrow, existing and proposed contours
Location and log of deep hole observation test
date of test
existing grade elevations for each test
Pager 7 of 16
PLAN REVIEW CHECKLIST (cont.)
Name of approving authority representative
Name & approval no.of soil evaluator
Location and results of perc test
Date of perc test
Location of water lines and other subsurface utilities on facility
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
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
Pager 8 of 16
PLAN REVIEW CHECKLIST(CON'T)
Recirculating Sand Filters
Complete plans and specifications
hydraulic profile
location of the treatment works and nearest existing street
street and lot number
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•
DOSING TANK
Dimensions L x W x D = Vol.
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
Pager 10 of 16
LEACHING CHAMBERS/PITS
ITEMS TO NOTE, I
Manufacturer A2 1
Installation
Bed Formation
Number of beds of trenches Length 3Z
Width $ /SID//
Depth ($ " Cl ! ^. / 0
Leaching area available: 3'Z
x _ ar Z - G `t.� Y U I
bottom: (length x width x no. of pits) = G L
sides: (2 x (length x depth (2'max.)+(2 x (width x depth (2'max) x #of pit . Sf.j
Total leachingarea available= 6/O
� 7(/ sq. ft.
LEACHING AREA REQUIREMENTS:
3 X Z71Total leaching area (bottom+ sides)x loading factor from 15.242 /� /' "
= gals. This must be greater than or equal to the design
flow for a system. Increase leaching area if garbage grinder is used.
' revery 20 feet
ibution Trencyhes: 0 7 X
D
Beds: area for pipe not to exceed
60 x 60 feet
Spac' depth 2 x effective de th or width '
Beds: 4 feet between excavation sidewalls.
M oles (min -one 20" access per unit; a 24"diam for> 2,000 gal units)
e around chamber('12" to 48" of% " to 1 %"stone)
2" cover of 1/8" to %:" stone
' paration between max. high GW and trench bottom? Yes No
Pager 11 of 16
PLAN REVIEW- SYSTEM SITING
Performed By Approval#
Witnessed By• Date
Location Address or Owner's Name,
Lot Number: Address and
Telephone No.
Office Review
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 Normal Below Normal
Other References Reviewed:
Minimum setback distances (where applicable) shall be shown on the plan for the proposed
disposal facility (septic tank and soil absorption system.)
Soil Absorption
Septic Tank System (SAS)
Property line 10 10
7 t/Cellar walUinground
imming pool 10 20
1 Slab Foundation 10 25
t/Wa supply
essure line 10 10
Surface waters
(except wetlands) 25 50
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Septic Tank SAS
Bordering vegetated
wetlands, salt marshes,
inland and coastal banks 25 50
SURFACE WATER SUPPLY
Reservoirs and impoundments 400
400
(/Tributaries to SWS 200 200
(.- Hands bordering SVVS or
tr. utaries thereto 100 100
Certified Vernal Pools 100 100
rivate water supply well
or suction line 50 100
PUBLIC ATER SUPPLY WELL 04
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
Pager 14 of 16
Soil Absorption
Septic Tank System
ther open, surface or
subsurface drains (ex-
cluding foundation drains)
which intercept seasonal high
groundwater 25 50
LOther open, surface of
subsurface drains (ex-
cludin undation drains 5 10
eaching and catch
bas''s & drywells 10 25
oWnhill slope N/A 15' (min) to
top of
3:1 slope
C./
II spection Port(s)
1Ngnetic 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.
Pager 15 of 16
• r
EFFLUENT LOADPNG RATES
(gpd/sq. ft./day)
PERC.RATE SOIL CLASS
(min./in.) CLASS I CLASS II 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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