HomeMy WebLinkAboutResponses to engineering comments (07-30-2025)
112 State Road / N. Dartmouth MA 02747
Tel: (508) 858-5040 / Fax: (508) 858-5041 / www.choubahgroup.com
July 30, 2025
Ms. Brittany DiRienzo, Conservation Administrator
Yarmouth Conservation Commission
1146 Route 28
Yarmouth, MA 02664
Re: Proposed Gasoline filling station with
convenience store, a drive thru & residential apartments
1272-1276 & 1282 Route 28
Yarmouth, MA 02664
Applicant/Owner:
Ekaterina & Family, LLC
1282 Route 28
Yarmouth, MA 02664
CEG# 20-586
Dear Ms. DiRienzo,
Attached please find revised Plans for the proposed gasoline filling station and residential apartments at
1272-1276 & 1282 Route 28. Revised Plans and supporting documents are to address Peer Review
comments dated July 28, 2025, by Comprehensive Environmental Incorporated (responses to comments
are in Bold italic below each comment).
Stormwater Comments:
1. The development proposes three subsurface infiltration systems designed to completely infiltrate
runoff generated from the 100-year storm event, however, the following assessments must be performed
to ensure the system will function properly:
b.
A mounding analysis is required when the vertical separation from the bottom of an exfiltration system
to estimated seasonal high groundwater is less than four (4) feet and the recharge system is proposed to
attenuate the peak discharge from a 10-year or higher 24-hour storm (e.g., 10-year, 25-year, 50-year, or
100-year 24-hour storm). The average separation to estimated seasonal high groundwater is just below 4
feet (El. 16.11) based on the test pits provided. The bottom of the stormwater chambers for System #1,
2, & 3 is at El. 20.00.
Bottom of all infiltration systems were raised to elevation 20.15 to provide 4 feet of separation from
groundwater elevation at 16.11. A mounding analysis is no longer needed.
Finish grade on top of the infiltration systems have been adjusted (raised by few inches) in order to
maintain a minimum cover of 18” over the chambers as suggested (refer to revised infiltration system
section).
b. Per the Yarmouth Stormwater Regulations, a description of vehicles and equipment fueling
procedures, including how fuels and other vehicle maintenance substances will be stored and handled
during construction.
Fueling Notes have been added to the Demolition and Erosion & Sediment Control Plan as suggested
(refer to revised plans).
All peer review comments have been addressed, and we look forward to seeing you on August 7th.
Sincerely,
Choubah Engineering Group, P.C.
Halim A. Choubah, P.E.
Halim A. Choubah, P.E., President
Cc: File, Barbara Hanson, Jay Imad