HomeMy WebLinkAbout- Correspondence - 2051 SALEM STREET 2/26/2019 1
North Andover Health Department
Community and Economic Development Division
February 22, 2019
Benjamin Osgood, P.E.
1.57 Bluff Street
Salem,NH 03079
Re: 2051 Salem Street (Map 108.A,Lot 0001)
Dear Mr. Osgood:
The proposed wastewater system design plan for the above site dated February 6, 2019 and
received on February 7, 201.9 has been reviewed. Unfortunately, the plan cannot be approved
until the following items are corrected. J`he specific section in"Title 5: 310 CMR I5.000, or
North Andover regulation that is not met by this design follows each item where applicable.
Sheet 1 of 2:
1. In title block, change the ASSESSORS MAP number to read: 1.08.A,LOT 0001.
2. On existing conditions site plan survey, change the northern TP2 to read:PT2.
3. On proposed site plan, indicate the name and address of the record owner(and applicant
if different from the owner) (NA 3.2g).
4. On proposed site plan, indicate location of all existing leaching fields and their reserve
areas and private wells on abutting properties, including the other side of Salem Street
(CMR 15.220 (4)(k)(1)(m) and 15.211 (1)), (NA 3.2j, 1.5.).
5. On proposed site plan, shift the location of the middle access cover on top of the septic
tank to the west in order to match the tank's inlet and outlet locations.
6. On proposed site plan, indicate the location of the observation tube (inspection port). j
(CMR 15.240(13)).
7. On proposed site plan, indicate (or note) the location and elevation of the foundation
drain intended to serve, the proposed building (NA 3.2).
8. On proposed site plan, indicate surface drainage shall be directed away from the soil
absorption system (CMR 15.240(l l)).
9. On proposed site plan, show ends of distribution lines connected together by un-
perforated pipe of the same materials specified (CMR 15.251(9)).
10. On proposed site plan, identify or delete the 1 3/" long line located off the NE corner of
the SAS.
Pagel of 3
North.Andover health Department, "Town Hall, 120 Main Street,
North. Andover,MA 01845 Phone: 978.688,9540 Fax: 978.688.9542
11. On proposed site plan, confirm finished grades between elevations 100 and 98 do not
expose the top of the pipe leading to the distribution box.
12. In GENERAL NOTES -96, first line, change the wording: METHUEN BOARD OF
HEALTH to read: NORTH ANDOVER BOARD OF HEALTH.
13. In CONSTRUCTION NOTES, add the following note: CONTRACTOR SHALL
INSTALL A TEMPORARY BENCHMARK WITHIN 50 TO 75-FT OF THE SYSTEM
COMPONENTS. (3 10 CMR 15,220(4)(q)).
Sheet 2 of 2:
1. On System Profile detail, adjust the gravity effluent distribution lines to have a slope of
0.005 feet per foot. (CMR 15. 251(9)).
2. On Septic Tank detail, it shows a 3" (MIN.) dimension between the invert of the inlet and
the water level. Change the note to read: 3"(MAX.) (3 10 CMR 15.227(5)).
3. Note 5 on the septic tank detail states an effluent filter will be installed in the outlet tee.
Indicate the brand and model of effluent filter that is approved by MADEP and add a
note: "THE FILTER IS TO BE INSTALLED IN ACCORDANCE WITH THE
MANUFACTURER'S SPECIFICATIONS, AND WILL BE INSPECTED AND
CLEANED AT LEAST ON AN ANNUAL BASIS." (CMR 15.227(7)).
4. On Septic Tank detail, since an effluent filter is provided at the outlet tee of the septic
tank, the access cover above the tee should be shown at grade (CMR 15.227(7)).
5. At the test pit locations, depth to groundwater varies between 3'-4" to 4'-6". At the septic
tank location, depth to groundwater is not given. Provide buoyancy calculations for the
septic tank or documentation that the tank is not intersecting the water table(CMR
15.221(8)).
6. On Leach Trench Section details, change the notes: 12"MINIMUM EARTH COVER to
read: BACIUILL SHALL BE A MINIMUM OF NINE INCHES, EXCLUDING
TOPSOIL,13LACED IN LIFTS AND COMPACTED TO PREVENT SETTLING (CMR
15.240 (9)).
7, On Leach Trench Section details, change the notes: 2" 1/8" to 3/8"DOUBLE WASHED
STONE to read: 2" 1/8"to 1/2" DOUBLE WASHED STONE (CMR 15,247(2)),
8. On Observation Tube detail, change the note: PVC CAP AND SLEEVE OR SCREW to
read: SCREW TYPE CAP, ACCESSIBLE TO WITHIN 3 INCHES OF FINISH GRADE
(CMR 15.240(13)).
In addition to the above review comments, the following clarifications are suggested to be added
onto the drawings:
1. In CONSTRUCTION NOTES 414, is this note needed? If not,please delete it.
2. On proposed site plan, indicate the location of contour 108 on the south side of the
building.
3. On System Profile detail, you may wish to clarify the depth of soil removal as depicted in
the system profile to more accurately represent field conditions noted in the test pits.
Page 2 of 3
North Andover Health Department, Town Hall, 1.20 Main Street,
North Andover, MA 01845 Phone: 978.688,9540 Fax: 978.688,9542
Please feel free to contact the office or Mill River Consulting; at 978-282-0014 with any
questions you may have. We look forward to working with you to obtain a wastewater treatment
and dispersal system which will be in compliance with all regulations and assure protection of
public health and the environment of North Andover.
Sincerely,
B 2an J. 1 LaC'rasse, CEHT
Director of Public Health
cc: Jane M. and Cleon L. Richards, Jr,
File
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Page 3 of 3
North Andover health Department, 'Town Hall, 120 Main Street, J
North Andover,MA 01845 Phone: 978.688.9540 Fax.: 978.688.9542