HomeMy WebLinkAboutCorrespondence - 851 FOREST STREET 7/18/2018 North Andover Health Department
Community and Economic Development Division
December 8, 2017
.lames M. Kavanaugh, P.L.
Environmental Consultant
14 Shady Hill Drive
North Reading, MA 01864
Re; Subsurface Sewage Disposal System Plan for 851 Forest Street(Map 105,Lot 162)
Dear Mr, Kavanaugh,
The proposed wastewater system design plan for the above site dated November 28, 2017 and
received on November 30, 2017 has been reviewed. Unfortunately, the plan canna@ be approved
until the following items are corrected. The specific section in Title 5: 31.0 CMR 15.000, or
North Andover regulation that is not met by this design follows each item where applicable.
1. The soil logs for TP-1 and TP-2 do not match the Board of"Health representative's field
notes. The field notes have been included for reference.
2. The manufacturer and model number for the septic tank are required (NA 3.2).
3. All system components are required to be marked with magnetic marking tape and should
be noted on the design plan (3 10 CMR 15.221(12)),
4. A Local Upgrade Approval request is required to locate the septic tank less than 10' to
the waterline(3 10 CMR 15.405(l)(g)).
5. Annual maintenance is required for the effluent filter and should be noted on the design
plan (3 10 CMR 15.227(7)).
6. It appears the leach field has been oversized by using the incorrect LTAR of 0.60 gpd/sf
based on the soil texture and percolation rate. The correct LTAR appears to be 0.74
gpd/sf.
7. The distribution box detail dimensions indicate the incorrect lid thiclaiess for 1-1-20
loading.
Pagel of 2
North.Andover Health Department, Town Hall, 1.20 Main Street,
North Andover, MA 01845 Phone. 978,688,9540 Fax: 978.688, 9542
8. The bottom of the impervious barrier appears to be 1.7' to 2.3' below the seasonal high
ground water table elevation. You may wish to raise the proposed bottom elevation of
the barrier to avoid impounding of the effluent.
Please feel free to contact the office or Mill River Consulting at 978-282-001.4 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,
Brian J. LaGrasse, CEHT
Director of Public Health
cc: L. DeOliveira
File
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North Andover Health Department, Town Hall, 120 Main Street,
North Andover, MA 01845 Phone: 978.688.9540 Fax: 978.688. 9542