HomeMy WebLinkAboutCorrespondence - 58 COUNTRY CLUB CIRCLE 5/9/2017 (2) 5/9/2017 58 Country Club Circle-atlantic84@gmail.com-Gmail
---------- Forwarded message ----
From: Lisa Eggleston <Iisa(a—)eciglestonenvironmental.com>
Date: Tue, Mar 21, 2017 at 7:00 PM
Subject: Re: 58 Country Club Circle
To: Rebecca Oldham <roldham(cDnorthandoverma.gov>
Hi Rebecca,
I have received and reviewed the 3/13/17 response and revisions from Atlantic Engineering on this project, and
offer the following comments for the Board's consideration:
1. In their response to my previous Comment#4, Atlantic Engineering references the hydrologic
calculations that were submitted with the application as demonstrating that the proposed project
provides adequate compensatory recharge for the added impervious surface. I'd like to point out that
the HydroCAD analysis realty only demonstrates that the peak rate of surface runoff would be mitigated
during design storm events, it does not address the loss of groundwater recharge on an average annual
basis from the added impervious cover on the site. It has not been demonstrated that the two
proposed rain gardens are sized to retain and infiltrate the first inch or so of runoff from the added
impervious cover, nor does all of the added impervious cover even drain to the rain gardens. And while
the proposed pool will not add to the surface runoff from the site, it will capture and retain all of the
rainfall onto the pool surface, with none of that rainfall being recharged. I encourage the applicants to
consider using porous pavers or another more pervious surface for the new patio and walkway areas,
and/or providing compensatory recharge elsewhere on the site, to reduce the overall impact of the
proposed project.
2. The pool maintenance plan outlines appropriate measures for dechlorinating the pool water before it is
drained at the end of the season; what about when the pool is drawn down in advance of a major storm
event, as is called for in the plan to prevent overflow?
Let me know if you have any questions or wish to discuss further.
Lisa D. Eggleston, P.E.
Eggleston Environmental
32 Old Framingham Rd, Unit #29
Sudbury, MA 01776
Tel 508.259.1137
https://mail.googie.com/mail/u/0/?shva=1#searchllisa%40egglestonenvironmental.com/15ab3ca7O2l5c635 1/1
Atlantic Engineering&Survey Consultants,Inc. John B.Paulson,P.L.S.President
97 Tenney Street Georgetown,MA 01833 George J.Zambouras,P.E.
978-352-7870 -978-352-9940(fax) atlantic84@gmail.com
March 13,2017
Town of North Andover
Planning Board
120 Main Street
North Andover,MA 01845
Re: Special Permit Application
58 Country Club Circle, North Andover
Dear Planning Board Members:
Below please find a brief summary of the review comments prepared by Lisa Eggleston of
Eggleston Environmental dated March 2, 2017 which are followed by my response and\or
revisions to plans performed.
1. Wetland Boundary Confirmation by Conservation Commission.
a. The Wetland boundary was previously delineated in 2006 and the line depicted
on the plan represents the 2006 line. We understand that since the delineation
occurred over 3 years ago, a re-confirmation of the line is required by the
Conservation Commission. We have been in contact with the Conservation Agent
and have been working with her to gain access to the abutting property(see
below)
b. The Wetlands are located on abutting property owned by North Andover Country
Club and permission is needed to access the property to identify the wetland
boundaries. We have contacted Steve Kohr, general manager of the North
Andover Country Club and on March 8th as of this letter we have not received
permission to enter the property.
2. Identify DEP Zone A
a. The portion of the Zone A which is 400 feet from the bank of Lake
Cochichewick is not with the limits of the property. This is presently noted in
notation#9 of the General Notes on the plan.
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b. The Zone A line which is 200 feet from the upper edge of the wetland has been
noted on the plan.
3. Identify Limit of Work\Work to be outside 100 foot wetland buffer zone or NOI or
ANRAD is required.
a. The plan currently depicts the location of a siltation barrier which is also
represents the maximum limit of work. The siltation barrier notation has been
expanded to also identify it as the limit of work.
b. Subject to the confirmation of the wetland line, Conservation, as proposed, all
work is located outside the 100 foot buffer zone.
4. Clarify that the rain gardens will provide the compensatory groundwater recharge as
require by Zoning. Questioned is run-off flow will reach the rain gardens.
a. Hydraulic calculations provided the calculations that indicate that the proposed
rain gardens provide sufficient recharge of impervious surface run-off to equal
pre-development conditions thereby successfully mitigating the effect of the
added impervious surfaces.
b. Additional spot grades have been added to the plans to clarify that the proposed
grading directs impervious surface run-off to the rain gardens as demonstrated in
the hydraulic calculations
5. DEP Water Regulations require Impervious Cover limitations.
a. The regulation cited 310 CMR 22.02(C) is a regulation that regulates the
"Protection of Surface Water Supplies for New and Expanded Class A Water
Supplies". This section of 310 CMR 22 it is not for existing supplies. The
applicable regulation for existing supplies is 310 CMR 22.002(B)which does not
have any impervious area limitations. This was confirmed via a conversation with
Mr. Jim Persky of DEP NERO Drinking Water Section of Thursday March 9,
2017. Mr. Persky also indicated that such"land use restrictions must be
incorporated into the communities zoning regulations". As North Andover's
Zoning By-Law does not include such impervious limitations, no impervious
percentage limitations exist.
6. Establish best management practices for maintenance of pool within the watershed
a. A Pool and Rain Garden Maintenance plan is attached.
7. Add requirement to use low-phosphorus fertilizers and expand use of restricted fertilizes
to future maintenance of lawn. Provide landscape plan.
a. The Fertilizer notation has been expanded to include the use of low-phosphorus
fertilizers and to restrict fertilizer use for routine lawn maintenance.
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b. As of this letter the requested landscape plan has not been completed by the
Landscape Architect. The plan will be submitted as soon as completed.
8. Restrict use of coal tar based pavement sealants
a. A notation has been added to the plans restricting the use of coal tar based
pavement sealants proposed.
9. Establish Board restriction regarding limits to approved clearing and use of landscape
products.
a. No response required as directed by the Board.
Sincerely4J.
bouras, P.E.
Cc: Don D. Stanley
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