HomeMy WebLinkAboutMiscellaneous - 240 GRAY STREET 7/8/2004 CHECKLIST FOR NORTH ANDOVER
SEPTIC SYSTEM PLANS
Job
The following is a checklist that incorporates all Title 5 and local regulations for septic plans.
Name of Applicant: ° ( Name of Designer: ,
Plan Date: _ Revision Date: ;/ Date of Review:
Property Address: �� t,, Map: Lot:
BOH Reviewer Type of P�'an(new or upgrade):
Number of Bedrooms: gpd) GarbaT isposal Allowed:
General Information: N.A. =North Andover Septic Regulations Other numbers refer to Title 5
OK Problem NIA
Street number and map/lot-220(4)(u)
_ Maximum scale of 1 "=40'for plot plan-220(4)
Maximum scale of 1 "=20'for profile and component details-220(4)
Legal boundaries of the facility being served-220(4)(a)
Names of abutters from recent tax map- NA 8.02j
Number of bedrooms,design calcs., -NA 8.02i
Name&address of record owner&applicant- NA 8.02k
Name&address of designer-NA 8.021
Holder and location of all easements-220(4)(b)
Date plan drawn&any revision date- NA 8.02m
All dwellings and buildings,existing and proposed-220(4)(c)
- Location of all existing or proposed impervious areas-220(4)(d)
All distances on site plan-NA 8.03a-c
Elevation of proposed driveway-NA 8.02t
Location and elevation of foundation drain-NA 8.02y
Location and dimensions of the system incl. reserve(new const.)-220(4)(e)
s Limits of excavation of leach area on site plan-NA 8.02z
Locus plan-220(4)(t) (Not to scale)
North arrow-220(4)(g)
' Existing and proposed contours-220(4)(g)
Locations and logs of deep holes-220(4)(h)
' Locations and logs of percolation tests-220(4)(i)
Date(s)of soil testing-220(4)(h)&(i)
L - Existing grade elevation of each deep hole-220(4)(h)
Elevation of percolation tests-N.A. 8.02n
Name of approving authority representative-220(4)(h)&(i)
Name of soil evaluator-220(4)0)
Soil logs and perc test logs match BOH records
Locations of waterlines,drains,and subsurface utilities-220(4)(m)
- Observed and adjusted g.w. elevation in the vicinity of the system-220(4)(n)
- Complete profile of the system to scale-220(4)(0),NA 8.02c
- Cross section of leaching facility-NA 8.02w (Not to scale)
� — Location of benchmark(s)within 50-75 feet of facility-220(4)0
Note listing all variance requests with proper citations-220(4)(p)
_ Local upgrade approval request form submitted-403(1)
2
Original R.S./P.E. stamp,signature&date-220(1)&(2)
P.E., discipline specified within stamp. MGL C. 112 s. 81M
sfc. supplies(whn 400'),pub. wells(w/in 250'),pvt. wells(w/in 150')-220(4)(
Location of watercourses,wetlands,wells, etc. Win 150'of system—NA 8.02r
Wetland disclaimer—NA 8.02s
RLS plan reference&certification required(prop line setbacks)-220(3)
Plan contains designer's certification statement
Use approvals/standards checked for I/A system-DEP docs.,
Perc rate>30 MPI-not allowed for new,LUA for upgrade-245(1)&('3)
Perc rate>60 WI-must use modified tight tank or VA technology-245(4)
Proposed system qualifies as"shared"system-002(definitions)
Flow is over 2,000 gpd-No RS. allowed-220(1)
Design flow was set in accordance with code-203
Existing system location and note on proper abandonment-354
Leaching facility at least 1' above Base Flood elevation—NA 9.05
_�. All piping Sch 40 minimum—NA 10.01
Basement floor minimum P above groundwater elevation—NA 5.04
Foundation drain present with elevation—NA 8.02y
On-site Soil and Groundwater Review
OK Problem N/A
Proper deep observation hole logs on plan-220(4)(h)
All deep holes and peres shown, including aborted tests—NA 8.02n
' t Soil evaluation forms submitted within 60 days of field work-018(2)
"a Proper percolation test log-220(4)(i)
Ample deep observation holes in primary disposal area(minimum 2)- 102(2)
Ample deep observation holes in secondary disposal area(minimum 2)- 102(2)
Ample perc testing(one in each disposal area,3 in prim.>2,000 gpd)- 104(4)
Deep hole testing conducted within two years—NA 7.05
Hole Identification Numbers:
ground elevation el.
acceptable soil el.
Leach facilitv invert el.
ground water el.
refusal el.
bottom of leach facility el.
thickness of acceptable soil
before&after soil R&R
separation to groundwater
separation to refusal
soil class
2
3
perc rate
loading rate - f
septic tank below g.w. table (yes d
pump tank below g.w. table (yes or no)
l.f in fill -255(l)
Setback Distances(Given in feet) 15.21 1
YES NO Is the lot in the Lake Cochiewick Watershed? NA 6.00&5.02
OK Problem N/A
Septic Tank Leach Facility
f Property line 10 10
Cellar wall 10 20
Inground pool 10 20
Slab foundation 10 10
Deck,on footings,etc. 5 10
Waterline 10 10
Private drinking well 75 100
Irrigation well 75 100
1 Wetlands 75 100
i Public well 400 400
/J,-----Wetlands bordering surface 150 150
water Supply or trib.
(in Watershed)
Trib. To Surface Water supply 325 325
Reservoirs 400 400
Tributaries to reservoirs 200 200
Drains(wat. supply/trib.) 50 100
Drains(intercept g.w.) 25 50
Foundation drains 10 20
Drains(Other) 5 10
�Drywells 20 25
Downhill slope 15'to 3:1 slope
3
4
w/o barrier
Building Sewer
OK Problem N/A
Grease trap required for certain uses(check 230 for details)
Pipe diameter listed(4"minimum)-222(1)
Pipe schedule listed-222(3)
Pipe cast iron or Sch 40 PVC—NA 11.02
Watertight_joints specified-222(3,)&(4)
Pipe laid on compact,fin base-222(5)
Pipe laid on continuous grade in straight line-222(7)@
Cleanouts precede all changes in alignment and grade-222(8)
Cleanout provided every 100 feet-222(8)
Manhole at any 90 degree alignment change-222(8)
( Invert elevation at building: ,
Invert elevation at septic tank: t. ,, "
Length of run: V-0
Slope: y (minimum of 0.01 -0.02 desired)-222(6)
10'offset to private well or suction line-222(2)
Septic Tank
OK Problem N/A
Tank is accessible-228(3)
No structures above tank—(228(3)
Tank can accommodate both primary&reserve—NA 9.04
200%of flow(required&provided given. 1500 min.)-220(4)(f)&223)(1)(a)
2-3"drop from inlet to outlet-227(5)
�— Minimum of 4'liquid depth-223(2)
3"air space above tees/baffles(minimum)-227(4)
9"air space above flow line(minimum)-227(4)
Tees are not to be replaced by baffles-227(1)
Tees extend 6"above flow line-227(1)
Inlet tee extends 10"below flow line(minimum)-227(6)
i Outlet tee extends 14"below flow line(more for deeper tanks)-227(6)
Gas baffle installed on outlet-227(4)
Access manhole cover above center of tank&each tee(except 2 compart)
228(2)
3-20"manholes-228(2)
W r 1 childproof;24"riser/manhole w/in 6"of final grade if<1000gpd-228(2)
ry Inlet and outlet tees on center line-227(1)
r" Soil compaction below tank specified(if soil is non-native)-221(2)
6"of<=3/4"stone beneath tank specified-221(2)&22 8(1)
If> 1,000 gpd AND not a single fam, dwell,must be 2 tks or 2 comp.-223(1)(b)
If plan specifies disposal must be 2 tanks in series or 2 compart.tank-223(1)(c)
Buoyancy calcs.required if tank at or below water table-221(8)
Tank is watertight-221 (1)
i 9"of cover-over(minimum)-228(1)
H-
10 loading(him.)-H-20 if traffic-226(3)
Top-ofiank<=36"below grade-221(7)
All pumping to tank(if applies)in accordance with-229
Tank is set to keep old system in service during install if possible
4
5
Tight Tank(Check here if not present: )
OK Problem /A
500%of design flow or 2000 gallons provided—260(2)(a)
3-20"manholes—228(2)
\uOncy paction below tank specified(if soil non-native)—221(2)
3/4"stone beneath tank'specified—221(2)&228(1)
calcs.Required'if tank at or below water table—221(8)
atertight—221(1)
over tank specified(minimum)—228(1)
H-10 load' (min.)—H-20 if traffic—226(3)
Top of tank<— 6"below grade—221(7)
All pumping to (if applies)in accordance with—229
AN alarm set at 3/ nk capacity—260(2)(c)
Min. 1-24"frame w/ er at finished grade—228(2)(f)
Year round access for pumping—228(2)(g)
Distribution Box(Check here if not present: )
OK Problem N/A
�Jnlet elevation:
'Outlet elevation:
0.17'drop from inlet to outlet(minimum)-232(3)(b)
6"sump(minimum)-232(3)(e)
All outlets at same elevation-232(3)(b)
Outlet pipes laid level for first 2 ft. -232(3)(c)
Pipe Sch 40-NA 10.01
Number of outlets: Number of laterals:
Size of outlets:
Inlet baffle/tee min. 1"over outlet invert for all d-boxes-232(3)(a),
! Soil compaction below distribution box specified(if soil is non-native)-221(2)
6"of stone beneath distribution box specified-221(2)
Box is watertight-221 (1)
f Top of box<=36"below grade-221(7)
Buoyancy calculations required if box is at or below water table-221(8)
Pump Chamber(Cheekhere if not present: )
OK Problem N/A
Volume ecified: 220(4)(r)
Pump on elevation- 220(4)(r)
Pump off elevafi n: 220(4)(r)
Alarm on elevatio 220(4)(r)
Number of cycles per -220(4)(r)(also 254(1)(d)if gravity from d-box)
Minimum 2"delivery Ii n o d-box if gravity-254(1)(c)
Pressure dosed l.f if flow>= 000 gpd-254(1)(a)&254(2)(a)
Cycles per day is consistent with ,amber volume-23 1
Volume calculations include flowback volume-2') 1(2)
5
6
24 hour storage capacity above pump on elevation-231(2)
Number of pumps: 2 if system serves>2 dwelling units-231(6)
` Capacity of pump(s)- gpm @ ' TDH-220(4)(r)
Pump can pass 1 1/4 "solids(minimum)-231(7)
PuTp,controls specified-220(4)(r)
Ala equipment specified-231(2)
Alarm ' in building and powered on separate circuit from pump-2') 1(9)
Pump seq ence correct(off-lead on-lag on-alan-n on)-231(8)
Pump performance curves included-220(4)(r)
Manual operk ing switch-NA 12.01
Check valve,bleeder hole-NA 12.01
1 childproofs 24"riser/manhole to final grade-2'31(5),
Soil compaction beneath pump chamber specified(if soil is non-native)-221(2)
6"of<=3/4"stone beneat46hmbr. specified-221(2)&228(1),
Buoyancy calculations if chain r is at or below water table-221(8)@
9"of cover over chamber(mine 228(1)
H 10 loading(min.)-H-20 if traffic-226(')),
Chamber is watertight-221 (1)
Top of chamber<=36"below grade-221(7)
Leaching Facility(general-complete for all designs)
OK Problem N/A
E 50%larger if garbage disposal-240(4)
ve Trenches to be used whenever possible-240(6)
No vehicle or imperv. area above l.£unless unavoidable-240(7);NA 13.02
Vented if under impervious cover-241 (1)
Vented through same pipes as distribution system-241 (1)(a)
Vent protected from precipitation/animal entry-241 (1)(b)
Vent is placed beyond traffic or impervious area-24 1 (1)(c)
All lines connected to vent if bed or trenches-241(1)(d)
9"cover over peastone-240(9)
Reserve area provided(new construction)-248(1)
Reserve 4' from primary leach area—NA 9.04
t 4'(5'if perc rate<=2 MPI)separation to g.w.-212(a)&(b)
4'(down to 2'with variance or I/A-upgrades only)of natural soil under 11
GW separation is adjusted to highest existing grade if facility cuts into a hillside
Pipe slope minimum of 0.005-251(9)
�. Require 5'removal and replacement if in fill-255(5)
Top of leach facility<=36"below grade-221(7)
Final grade over l.f.minimum 0.02 ft/ft-240(10)
Surface&subsurface drainage away from 11. -240(1 1)&245(5)
Minimum design flow 440 gpd without deed restriction—NA 13.01
3:1 slope where grading required-255(2)
Toe of fill slope stops 5'from property line or swale installed-255(2)
b 11_,, Impermeable barrier if<3:1 slope or< 15 feet to—3:lslope-255(2)
Impermeable barrier/retaining wall poured concrete—NA 9.02
Retaining wall stamped by P.E. -255(2)(b)
Top of retaining wall>=top of peastone elevation-255(2)(f)
10'offset from edge of leach facility to edge of ret.wall-255(2)(g)
Perc test(s)done in most restrictive layer- 104(2)
✓ Perc test 4' below leaching elevation—NA 7.06
Design flow listed and required/provided leach area given-220(4)(f)
Leach pipes SCH40 PVC—NA 10.01
Leach pipes minimum 4"diameter except for dosed system—NA 14.04
6
7
% Leach lines capped, vented,or connected together-251(9)
Pressure dosing guidance followed if pressure distribution-254(2)(c),
Pressure dosing required over 2,000 gpd or with I/A remedial use-231(1)
Leaching Trenches(Check here if not present: )
OK Problem N/A
Number of trenches:
Minimum of 2 trenches-'NA 9.01(2)
Depth of trenches(max eff.2'): f -247(l)
Width of trenches(2'min.,4'max.): -251 (1)(b)
Length of trenches(100'max): ,�, '7 -25 1 (1)(a)
Trenches are vented(when>50')-251 (11)
' Trenches follow contour lines-251(2)
Trench spacing 3 times effective width or depth minimum-251 (1)(d) Ile,
In fill or reserve between trenches, 10' min.-NA 14.01& 14.03 e
Available leach area given(Min. 500 s.f.)-NA 9.01(2)
Bottom=L x W x# _ s.f.
Sidewall=L x x# x2= s. f.
Effective leach area given
Loading factor:
Effective area=total area s.f.x LTAR '_ V g/day
Effective area is>=design flow of facility being served
2"of 1/8"- 1/2"2x washed peastone.-247(2)
Trench depth of 3/4"to 1 1/2"double washed stone-247(1)
Leaching Pits(Check here if not present:--
OK Problem N/A
#of pits/pit systems: (dosing chamber if>1,231 (1))
Dimensions of each pit or system: L W D
Depth of pits(max eff.2'): -253(1)(a)
Available leach area given
Bottom=L x W x#of systems= s.f.
Sidewall=L+W x D x 2 x#of systems= s.f.
Total area=bottom +sidewall = s.f.
'Eff,ective leach area given
Leading factor:
Effective area=total area s.f.x LTAR = g/day
Effective ea is>=design flow of facility being served
Minimum of21pits at least 13'X16'—NA 9.01(3)
Distribution for`gglleries/chmbrs. in trench config. -pipe every 20'-253(6)
Distribution for galleries/chmbrs. in bed config.-ea.pipe serves<=40 s.f.-253(6)
Spacing-2 times the effective width or depth(the greater)-253(1)(c)
2"of 1/8"- 1/2"2x washed peastone.-247(2)
3/4"to 1 1/2"double washed stone-247(1)
Each pit has at least one 20"access cover.24"CI to grade over 2,000 gpd
-253(3)
Surrounding aggregate thickness between I (min.)and 4' (max.)-253(1)(b)
Vents,if necessary,extend under covers of pit(s)--.241 (e)
/ff
Leach Fields(Check here if not present:
OK Problem N/A
Number of fields: (need dosing chamber if> 1,231 (1))
7
8
Length(100'max.): -252(2)(b)
Width:
Total area:L x W = S. f.
Minimum 900 square feet-NA 9.01(1)
Distribution lines connected with solid pipe—NA 15.01
Effective leach area given
Loading factor:
Effective area=total area s.f x LTAR = g/dav
Effective area is>=design flow of facility being served
Minimum of two distribution lines-252(2)(a)
6'line separation(max.)-252(2)(d) ,
4'maximum separation from edge of field to line-252(2)(e)
10'minimum separation between adjacent leach fields-252(2)(f)
Between 6"and 12"of 3/4- 1 1/2"stone beneath field-252(2)(g)&247(2)
2"of 1/8"-1/2"2x washed peastone,247(2)
Final Grading
O Problem N/A
Slope over leach area minimum of 0.02 feet/foot—240(10)
Grading shall divert drainage away from leach area—240(l 1)
Grading slopes away from dwelling
5/24/01
8