HomeMy WebLinkAboutCorrespondence - 107 GRAY STREET 8/11/2003 Q p;®RTy
TOWN OF NORTH ANDOVER
HEALTH DEPARTMENT
27 CHARLES STREET s
NORTH ANDOVER MAS SAC1 USETTS 01845
y q�R4iro ham` 5
' SSACHO
Sandra Starr,R.S., C.H.O. Telephone(978)688-9540
Public Health Director FAX(978)688-9542
August 11, 2003
Mr. Alberto M. Gala
GEO Consulting Engineers, Inc.
P.O. Box 473
Winchester, MA 01890
Dear Mr. Gala:
The Health Department has reviewed the revised plans dated July 2, 2003 for the proposed repair
of the septic system at 107 Gray Street,North Andover. The plans are now approved.
Please call me at the above number if you have any questions.
Sincerely,
Sandra Starr, R.S., C.H.O.
Health Director
/pfd
CC: Homeowner: Mr. Charles Hart, 107 Gray Street,North Andover, MA 01845
Fax: 978-685-9729 (Homeowner will forward to engineer)
File: Address
Chrono
Building
HP Fax K1220xi Log for
NORTH ANDOVER
9786889542
Aug 112003 11:17am
Last Transaction
Date Time Type Identification Duration Pages Result
Aug 11 11:17am Fax Sent 89786859729 0:19 1 OK
9j6�
Town of "orb h Andover
Office of the 1 Department
Community velop e t and Services Division
27 Charles Street
North Andover,Massachusetts 0184
�c us�
Sandra.Starr 'Telephone(978)688-9540
Fax 9713 688-9542
Public I-Iecaltl�t Director ( )
May 17, 2003
Alberto M. Gala
GEC) Consulting Engineers, Inc.
P.O. Box 473
Winchester,MA 01890
Re: 107 Gray St.,North Andover
Dear Mr. Gala:
The proposed septic plans dated April 17, 2003 for the a 1'g a u; of the septic system at 107 Gray
Street,North Andover,MA have been reviewed and been found to have technical deficiencies
that must be addressed before approval can be given. They are as follows:
1. Missing assessor's map and lot number. (3 10 CMR 15.220(4)(u))
2. Missing names of abutters. (NA 8.02j)
3. Name of design engineer. (NA 8.02(1)
4. Distances missing on site plan. (NA 8.03a-c)
• SAS to poly barrier
• SAS to stone wall
• SAS to tank& pump chamber
• Vent to property line
5. Location and elevation of foundation drain for new construction (NA 8,02y)
6. Missing reserve area(required for new addition construction)(310 CMR 15.220(4)(e))
7. No elevations for percolation tests. (NA 8.02n)
8. Name and certification statement of site evaluator missing (3 10 CMR 15.220(4)(o))
9. Missing waterline. (3 10 CMR 15.220(4)(m))
10. Statement saying that there are no private wells within 150 feet of the proposed system
(or information locating any such wells)missing. (3 10 CMR 15.220(4) & (NA 8.02r)
11. Insufficient deep holes in disposal area—southern end(3 10 CMR 15.102(2))
12. Please indicate on profile that design meets breakout. (3 10 CMR 15.21(1)
13. Missing note indicating that building sewer is to be laid on compact, firm base. (3 10
CMR 15.222(5))
14. Septic tank specification on profile disagrees w/site plan & design data.
15, Missing specification on stone under septic tank, pump chamber&D-box. (3 10 CMR
15.221(2), 228(1))
16. Missing buoyancy calculations for tank& chamber if at or below water table. (310 CMR
15.221(8))
17. Tops of tank and pump chamber must be less than or equal to maximum of 36" below
grade. (3 10 CMR 15.221(7))
18. Outlet pipes from D-box must be laid level for first 2 feet. (3 10 CMR 15.232(3)(b))
19. Size/volume of pump chamber not specified. (3 10 CMR 15.220(4)(r)
20. Missing specification on solids size that pump can pass. (310 CMR 15,231(7))
21, No pump perfon-nance curves included, (3 10 CMR 15,220(4)(r))
22. Missing manual operating switch. (NA 12.01)
23, Vent not protected from precipitation/animal entry. (3 10 CMR 15.24 1(1)(b))
24. Groundwater separation not adjusted to highest existing grade.
25. Trenches in fill or w/reserve in between must be 10 feet minimum. (NA 14.01 & 14.03)
26. All previous leach area from wetland buffer towards higher elevation should be removed.
27. This design, if approved, is sized for a dwelling with a maximum of 9 rooms, including a
finished basement, 3-season room, and expansion attic and no garbage grinder. Floor
plans for the existing dwelling and the proposed addition are required before approval
can be given. (Plans need not be to scale—can be reduced in size.)
Please call the office at 978-688-9540 should you have any questions.
Sincerely,
Sandra Starr
Health Director
Cc: Homeowner
File
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CHE CKLIST FOR NORTH ANDOVER
SEPTIC SYSTE M PLANS
Job
The following imu checklist that incorporates all Title 5 and local regulations for septic plans. /
k
Name u[App\kmut Name ofDesigner:
Plan Date: °` Revision Date: Date of Review:
rz"ye,,y/^wozcoa: Map: P
muuReviewer: Type ofPlan (new mupg/ude)
Number ofBedrooms: 8p& �u�o�Dimpoy��Umw��
-------- ' ~ /
N.A. =North Andover Septic Regulations Other numbers refer to1]Uc5 �
01�, Problem |
N/&
Street number and map/lot-220(4)kd
Maximum scale ofl "=4O' for plot plan -228N\
Maximum scale ofl "=20' for profile and component details-23O(4)
���mi6mu�daric�oytb���oi�tyh��moc�vm�-%�ONU(u)
~ ` '`
Names of abutters from recent tax map- NA8.U2j
Number ofbedrooms, design om|cm.`-N/\8.O2i
___ Nome&address of record owner&applicant- NA 8.02k
YJame&address nf designer-NA8.02l ~-06A,t
Holder and location nf all easements-22O(4)(6) `
Date plan drawn&any revision date- NA8.02m
All dwellings and buildings,cxisdogaodpropoycd-22A(4)(c)
Location of all existing u«proposed 'impervious are 4a-220(4)(d)
AJ|diaiuoocmouuitep�o—NA 8.03u-c � �
Elevation of proposed driveway-NAQ.O2t
Location and elevation uf foundation drain-N\0.O2y
Location and dimensions of the system incl. reserve(new c*ouL)-22U(4)(m)
Limits of excavation of leach area ou site plan-NA8.O2z
Locus plan-22O(4)(8 (Not toscale)
North arrow'22O(4)&)
Existing and proposed contours-22O(4)(u)
Locations and logs of deep holes-230(4)(h)
Locations and logs of percolation tests-220(4)0
I)wto(u)of soil testing-22O(4)(6)6t(i)
Existing grade elevation of each deep hole-22O(4 ^
B��i��pom]ud��{o-0.A. 8.02o �+�` �� L,l�° 6,t- -A� eA el J~~N ^a�
Name of approving authority representative'220(4)8z &(0
Name otsoil evaluator-220(4)0) ('(w. -,� � �
Soil logs and p�cteo logs match QOBrmx�dm -- *+ "k�A_
^
—�- - `
Locations of waterlines, drains,and subsurface utilities-220(4)(u) -
Observed and adjusted A.vv. elevation in the vicinity o[the system -22O(4)(n) '
Complete profile oy the system to scale-220(4)(o),NA 8.03c
Cross section of leaching facility'NA 8.02vv (Not toscale)
Location ofbcmchmurk(a)within 50-75 feet of facility'22U(4)(o\
Note listing all variance requests with proper citations-22O(4)(p) �
Local ` ' �
2
Original R.S./RE. stamp, signature&date-220(1)&(2)
P.E.,discipline specified within stamp. MGL C. 1.]2 s. 81M
sfc. supplies(w/in 400% wells 250%py'_yy-qtt§.(ffLip 1�9)-220(4)(
Location of watercourses,wStjMds,wells,etc. w/in 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 does.,
Perc rate>30 MPI-not allowed for new,LUA for upgrade-245(1)&('3)
Pem rate> 60 MPI-must use inodified tight tank ot•LIA technology-245(4)
Proposed system qualifies as"shared"system-002(definitions)
Flow is over 2,000 gpd-No R.S. allowed-220(1)
Design flow was set in accordance with code-203
Existing system location and note on proper abandom-nent-354
Leaching facility at least V above Base Flood elevation—NA 9.05
All piping Sch 40 minimum—NA 10.01
Basement floor minimum V 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 percs shown, including aborted tests—NA 8.02n
Soil evaluation forms submitted within 60 days of field work-0 18(2)
Proper percolation test log-220(4)(i)
1 1;4 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:
Z
2 (0 CI
ground elevation el. q3
Z,
acceptable soil el. P)151
Leach facility invert el. �26,I �(5,
"i Z<,—C
ground water A (
refusal el. VII
bottom of leach facility el.
thickness of acceptable soil 7
before&after soil R&R
�2
separation to groundwater
separation to refusal YI
soil class
2
3
perc rate
loading rate 'Fp;
septic tank below g.w. table _ ye or no)
pump tank below g.w. table es_ q(y or no)
Lf in fill - 5(1)
Setback Distances(Given in feet) 15.21 1
YES ,NO Is the lot in the Lake Cochiewick Watershed? NA 6.00&5.02
OIL Problem N/A
Septic Tank Leach Facility
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 drinkingmell 75 100
Irrigation well 75 100
Wetlands 75 100
e"(14ri �'� _ ��� Public well 400 400
1� 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
pI Drains(wat, supply/trib.) 50 100
a Drains(intercept g.w.) 25 50
Foundation drains 10 20
' Drains(Other) 5 10
d
Drywells 20 25
Downhill slope 15'to 3:1 slope
3
4
w/o barrier
Building Sewer
OIL 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 1.1.02
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.4 . .
Invert elevation at septic tank:4; k4,0 t
w Length of run: i^
Slope: (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)
i. _— Tees extend 6"above flow line-227(1)
Inlet tee extends 10"below flow line(minimum)-227(6)
{ 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)
I childproof;24"riser/manhole w/in 6"of final grade if<1000gpd-228(2)
Inlet and outlet tees on center line-227(1)
Soil compaction below tank specified(if soil is non-native)-221(2)
6"of<=3/4"stone beneath tank specified-221(2)&22 8(l)
�� If> 1,000 gpd AND not a single fam. dwell.must be 2 tks or 2 camp.-223(l)(b)
If plan specifies disposal must be 2 tanks in series or 2 compact.tank-223(l)(c)
Buoyancy calcs. required if tank at or below water table-221(8)
Tank is watertight-221 (1)
9" of cover over tank(minimum)-228(1)
H- 1 0 loading(min.)-fI-20 if traffic-226(3) 0 f "t CA
To of <=36"below grade-221 7 'gib ° ."
Top � O t�tw,�. �.�w.�
All pumping to tank(if applies)in accordance with-229
_ a Tank is set to keep old system in service during install if possible
4
5
Tight Tan lc(Check here if not present: )
OK Problem N/A
500%of design flow or 2000 gallons provided-260(2)(a)
3-20"manholes-228(2)
Soil compaction below tank specified(if soil non-native)-221(2)
6"of<=3/4"stone beneath tank specified-221(2)&228(1)
Buoyancy calcs. Required if tank at or below water table-221(8)
Tank is watertight-221(1)
9"of cover over tank specified(minimum)-228(1)
H-10 loading(min.)-H-20 if traffic-226(3)
Top of tank<=36"below grade'-221(7)
All pumping to tank(if applies)in accordance with-229
AN alarm set at 3/5 tank capacity-260(2)(c)
Min. 1-24"frame w/cover at finished grade-228(2)(f)
Year round access for pumping-228(2)(g)
Distribution Box(Check here if not present: )
O Problem N/A
' // Inlet 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. V over outlet invert for all d-boxes-232(3)(a),
Z Soil compaction below distribution box specified(if soil is non-native)-221(2)
f�j� 6"' of stone beneath distribution box specified-221(2)
/e/// 7,
Box is watertight-221 (1)
Top of box<=36"below grade-221(7)
Buoyancy calculations required if box is at or below water table-221(8)
Pump Chamber(Check here if not present: x° )
OK Problm N/A
Volume specified: 220(4)(x)
Pump on elevation- q1 01 220(4)(x)
Pump off elevation: ej l 220(4)(x)
Alarm on elevation: 6,� .1M.. 220(4)(x)
Number of cycles per day-220(4)(r)(also 254(1)(d) if gravity fi•om d-box)
Minimum 2"delivery line to d-box if gravity-254(1)(c)
I,/ Pressure dosed 1.£ if flow>=2,000 gpd-254(1)(a)&254(2)(a)
Cycles per day is consistent with chamber volume-23 1
Volume calculations include flowback volume-2' ) 1(2)
5
/
/y /
^�r//~//�/ ��,f^� � �� �_-- 6 /
-
24 hour storage capacity above pump ou elevation-23l(2)
Number of pumps: 2if system serves>2 dwelling units-23|(6)
�
Capacity *��� 8poo6� �Y ' 7DB'220(4)(r)
. � ~
Punopuonpnmx }-|� . "soli :(ui-� um)-2`1(7) ` '`�'
Pump controls specified-2%O(4)6i |
Alarm equipment specified ` '` ') �
&]aoo is in building and powered on separate circuit fi-uozpurup'2') 1(9) !
Pump sequence correct(uff-lead on-lag nn-u|mo-n on)-%3l(D)
Pump performance curves included-220(4)(6 ~-
y�umualnpuxtiu8nwdo6 I��
-_.�--'
Check valve,bleeder hole-N& 12.01 `
l childproof,24"riser/manhole final
Soil compaction beneath pump chamber -22](2)
beneath _---_. -,_-_-- 221`2/ 228`,,
Buoyancy calculations if chamber iwo1or below water table-22|(8)6�
9, ���o��������)-228(0 ^ '~
H- lO loading(uio.)-0-28if traffic-226pA, )
Chamber im watertight-221 (l)
Top of chamber`--36"below grade-22l(7)
Leach iM&EAcilitv(general (
-cmonete for all
O& fro6&xo
50%larger if garbage disposal-24O(4)
Trenches iobe used whenever possible-240(6)
N*vehicle orimyccv. area above U unless unavoidable-240(7)"240(7);NA
Vented ifunder impervious cover-24] (l)
Vented through same pipes uodisbiboimmmyamu-24l (1)(o)
Vent protected from precipitation/animal entry-24l (/)0A
Vent ie placed beyond traffic oz impervious orea-241 (l)(u)
All lines connected to vent if bed m trenches-24l(1)(d)
9"cover over pcapt000-24O(9)
�
Reserve area provided(new construction)-248(l)
4 �
Reacrvr ' mupr600/y)cauharou-NA 9.04 '
4' 'ifperc rate<=2 separation to&.vn -2l2k8&(b) .
4' don o2'wbbvaauocmJA-up@Tadenu|� fnaomloo|nmde |t
J 8 \ aopucotimo(uodioyedtn6igboatexiutio&8r�`' �f facility cuts into uhillside |
____ Pipe slope minimum ofU.005'25l(9)
____ Require 5'romnvu[and replacement ifiu fill-255(5)
Top of leach facility<=36"below grade-%2|(7)
over 11.
Final grade wvlmio6mmmO.0%fK0'24O0'O'
Surface&subsurface drainage away from L1. -24O(l L)&245(5)
8��/ioumdesign flow 4400pd without deed coobiodoo-Y�\ ^|3�'0/
3:1 slope where grading required-255(J)
Toe u[fill slope stops 5'brom/property line xvawu\e installed-255(2)
Impermeable barrier if<3:l slope o«< l5feet to-3:lolooe-255[2]
Impermeable barrier/retaining wall poured concrete-hAP.O2
Retaining wall stamped 6v�.B. '255(2)(b)
of � U
retaining wall of peastone' elevation-255C8AD
17 _____ ___ 10' off-set from edge of leach facility to edge ofret. wall-255(2)(g)
Porotcm1(s)done iu most restrictive layer- lO4(2)
ycro test 4` below leaching elevation-N\7.06 "10,0 � �-
Design flow listed and required/provided leach area given' -2 0(4)0
Leach pipes SCH4O PVC-NAlU.O] �
Leach pipes minimum 4"diameter except for dosed system-hA |4.O4 �
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: )
OIL Problem N/A �
e0, Number of trenches. z
Minimum of 2 trenches-NA 9.01(2)
.u:. Depth of trenches(max eff.2'): " -247(l)
Width of trenches(Train.,4'max) -251 (1)(b)
Length of trenches(100'max.): O -25 1 (1)(a)
Trenches are vented(when>50')-251 (11)
Trenches follow contour lines-251(2)
Trench spacing 3 tunes effective width or depth minimum-251 (1)(d)
' , In fill or reserve between trenches, 10' min. -NA 14,01& 14.03
'— Available leach area given (Min. 500 s.f) NA 9.01(2)
Bottom=L
Sidewall=L 1 `" xD � x# i x2— 6k "
I �
EffectiLoadve
fact or:
given
���> � ..
� a
g
Effective area=total area ( s.f x LTAR ,.�— 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:� )
OIL 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(l)(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.
Effective leach area given
Loading factor:
Effective area=total area s.f,x LTAR =_g/day
Effective area is>=design flow of facility being served
Minimum of 2 pits at least 13'X 16'—NA 9.01(3)
Distribution for galleries/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 1'(min.)and 4' (max.)-253(1)(b)
Vents, if necessary, exten under covers of pit(s)-241 (e)
Leach Fields(Check here if not present:
OIL Problem N/A
Number of fields: _ (need dosing chamber if> 1,231 (1))
7
8
--- _i Length(100'max.): -252(2)(b)
Width:
Total area: L x W _
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 LIAR 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)(0
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
OK Problem N/A
Slope over leach area minimum of 0.02 feet/foot—240(1.0)
Grading shall divert drainage away from leach area—240(l 1)
Grading slopes away from dwelling
5/24/01
8