HomeMy WebLinkAboutCorrespondence - 60 DEER MEADOW ROAD 1/10/2018 a
October 3,2017
-� �,� WILLIAMST} JT SPARAGES
Brian J. LaGrasse, health.Director ENGNEERS . PLANNERS ,SURVEYORS
North Andover Board of Health
120 Main Street T I
North Andover, MA 01845 S RECEIVED
Re: 60 Deer Meadow Road - Revised Sanitary Disposal System Upgrade Plan TOWN OF NORTH ANDOVER
HEALTH DEPARTMENT
Dear Brian,
Please find attached revised plans based on your comments dated September 18, 2017. The
following comments were addressed:
1. According to the manufacturer, Roth Multil:anti's can be buried with up to 72" of cover
following the installation of pipe supports that are available through the manufacturer. It
is unclear however if the Roth MultiTank is considered 1I-20 following the installation of
the pipe supports. To simplify matters and avoid the need for a potential DEP variance
we have revised the plan to show no more than 36 inches of cover over the proposed
tank.
2. Since the cover over the tank was reduced to less than 36 inches the need for a Local
Upgrade Approval, (LUA), is no longer needed. The LUA request has been removed
from the plan.
3. The profile specified that all piping proposed was Schedule 40 PVC, however,to clarify
we added an additional note to the Construction Notes on sheet 2 of 3. Note#28 states
that all piping must be Schedule 40 PVC.
4. A "key map" showing the full legal boundaries of the parcel was added to sheet 1 of 3.
5. The setback distances from the proposed SAS to the wetlands are shown on sheet 1 of 3.
6. Indication that the sewer piping shall have watertight joints and be laid on a compacted
firm base in a continuous grade was added as construction note 427.
7. A test pit was dug into the side of the hill during the soil testing effort on August 9, 2017
however it was not logged and is not shown on the plan set. The test pit confirmed that
there was at least 10 feet of fill material on the slope. The proposed septic tank is not in
the estimated seasonal high water table and buoyancy will not be an issue.
8. The septic tank detail was updated as requested.
q. A Label A1800 effluent filter is proposed on the outlet tee of the septic tank. A note was
added to sheet 1 of 3 to insure that the proper effluent filter is installed.
10. A note specifying that the tank shall be set on mechanically compacted layer of 6" of
crushed stone was added to both the profile view on sheet 3 of 3 and the septic tank detail 1
on sheet 2 of 3.
1.1. Note#2 on the septic tank detail shown on sheet 2 of 3 was added specifying that the tank
shall be watertight. l
189 North Main Street, Suite 101 o Middleton, MA 01949 o Tel: (978) 539-8088 e www.wsengineers.com
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12. Note#6 was added to the distribution box detail on sheet 2 of 3 to insure that the outlet
inverts are all equal.
13. Note#7 was added to the distribution box detail to insure proper installation of the inlet
tees.
14. Note #5 was added to the distribution box detail to insure that the distribution boxes are
set on compacted soil and 6" of crushed stone.
15. Construction note #29 was added to insure that the leaching pipes have 318"-518" orifices.
16. The building sewer lengths were adjusted to match the design plan.
If you have any questions regarding this information, or require any additional information,
please do not hesitate to contact our office.
Sincerely,
WILLIAMS & SPARAGES, LLC
Greg J. Hochmuth, RS, PWS
Project Manager
cc: Sumeeta& Sunit Mukherjee