HomeMy WebLinkAboutDenial Letter - Correspondence - 130 REA STREET 11/12/2019 TLED
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North Andover Health Department
Community and Economic Development Division
November 12, 2019
Benjamin Osgood, P.E.
157 Bluff Street
Salem,NH 03079
Re: 130 Rea Street(Map 98A,Lot 9)
Dear Mr. Osgood:
The proposed wastewater system design plan for the above site dated September 9, 2019 and
revised October 30, 2019 has been reviewed. Unfortunately,the plan cannot be approved until
the following items are corrected. The specific section in Title 5: 310 CMR 15.000, or North
Andover regulation that is not met by this design follows each item where applicable.
1. In a letter submitted which is dated October 30, 2019 there are several references to a
document which provides an explanation of the requested variances. Variances need to
show in writing their compliance with the standards at 310 CMR 15.410. No such
explanatory material was provided
2. In a letter submitted which is dated October 30, 2019 there are several references to the
MassDEP's STU approval standard conditions allowing a loading rate of 0.20 to be used.
That is a mis-interpretation of this document. Regardless, since the percolation test at this
site was unable to be completed due to slow infiltrative capacity of the soil it is not
possible to have a loading rate as defined in Title 5. A variance is needed to not have a
percolation test(as indicated in the next item)
3. As indicated in note#9 in the previous review, a variance to Title 5 needs must be
provided to have a design based on no acceptable percolation test results. This needs to
be indicated on the design plan and on accompanying information
4. The design plan indicates a Local Upgrade Approval is being sought to reduce the size of
the required 5' overdig around the soil absorption system. This cannot be authorized
through a Local Upgrade Approval and must be indicated as a variance to Title 5 on the
design plan and accompanying information
5. The design plan contains a proposed contour labeled 99 which does not appear correct
6. The design plan contains some errant notations in the area of the street
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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
7. The design plan depicts a soil stockpile area located behind the soil absorption system.
Using this location for a soil stockpile area would require driving over the soil absorption
system
8. The design plan does identify the 5' overdig on the site plan,nor is it clear which areas
are proposing to have a reduced overdig
9. The Maintenance Notes makes no references to the required services needed for the
proposed secondary treatment unit(NA 3.2)
10. Provide information on the methodology to be used to prevent soil scouring associated
with the 1/a"orifice proposed to be located in the lateral end elbow
11. It is generally prudent to consider using a sweep rather than an elbow for ease of
maintenance of the pressure distribution laterals. You may wish to consider this
adjustment
12. It appears the existing building sewer is intended to remain in place and not be replaced.
Explain why this is necessary, and indicate on the design plan if there are specific items
which should be examined at this pipe to assure it is watertight and properly functioning
13. Provide DEP Form 12 documenting the attempted percolation test 310 CMR 15.018
14. Provide a draft of the STU and pressure distribution system operation and maintenance
agreement
15. Depict the location of a proposed standard septic tank which could be installed at this site
as required by the Singulair-brand STU approval letter
16. Provide a revised Form 9A indicating the Local Upgrade Approvals and variances being
sought
17. A loading rate of 0.20 gpd/sf cannot be used when a secondary treatment unit is proposed
with a requested reduction in size 310 CMR 15.242(b)
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,
an . LaGrasse, CEHT
Director of Public Health
cc: Owner
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