HomeMy WebLinkAboutSP-20-019 - Supplemental - 0057 Hinesburg Road (37)Site Plan Review Comments
The Stormwater Section (City) has reviewed the “Green Mountain Habitat for Humanity- 57 Hinesburg Rd” site plan prepared by Lakeside Environmental Group, LLC, dated Feb. 12, 2020. We
would like to offer the following comments:
The proposed project is located in the Potash Brook watershed. This watershed is listed as stormwater impaired by the State of Vermont Department of Environmental Conservation (DEC).
The project proposes to create 10,420 square feet of impervious area on the parcel. This results in less than 1 total acre of impervious area on the parcel.
The VT ANR Natural Resource Atlas wetland advisory layer shows possible Class II wetland located 65 feet to the west of the lot. Has a delineation been performed to assure that there
is not a wetland/ buffer impact?
Considering the potential nearby wetlands and close proximity to Tributary 3 of Potash Brook, has the applicant performed infiltration tests in the location of the proposed “Stormwater
Infiltration Basin”? Based on information from recent projects in this area, the City is aware that the water table is quite high in this area- potentially making infiltration difficult.
What size storm is the Infiltration Basin designed for? As currently designed, the Infiltration Basin overflow will send water directly into the perimeter fence and then onto the paved
area of the loading docks for Commerce Square. This design is not ideal due to the potential impacts to adjoining property. Could the applicant configure the overflow to drain out the
western side of the basin?
The applicant should include a note within the plans about the maintenance needs of the infiltration basin.
Silt fence or other EPSC measures should be in place along the western perimeter of the lot.
Due to site constraints, considerations should be noted for vehicle parking, materials and soil stockpiles during construction.
Thank you for the opportunity to comment.
-Emmalee