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HomeMy WebLinkAboutRFA calculation 8.10.2026Attention!: This email originates outside of the organization. Do not open attachments or click links unless you are sure this email is from a known sender and you know the content is safe. Call the sender to verify if unsure. Otherwise delete this email. From:Lynne Hamlyn To:Jerolimo, Joseph Subject:Fw: Calhoun, 24 Minnetuxet Way, Yarmouthport Date:Monday, August 10, 2026 8:58:44 AM Hamlyn Consulting 690 Thousand Oaks Drive Brewster, MA 02631 774-323-0603 ----- Forwarded Message ----- From: Lynne Hamlyn <lhamlyn@capecodwetlands.com> To: Brittany DiRienzo <bdirienzo@yarmouth.ma.us> Sent: Sunday, August 9, 2026 at 01:33:00 PM EDT Subject: Calhoun, 24 Minnetuxet Way, Yarmouthport Good morning, Regarding construction within the riverfront:   The riverfront area, as calculated from the field location of the edge of river, not White's Brook as shown on the 1985 subdivision plan, is 89700 square feet. The existing proposed hardscape together (structure, driveway and walkway) within the outer riparian zone is 6356 sf; there is no hardscape within the inner riparian zone. The proposed hardscape is 7% of the total riverfront area on the property, significantly less than the 10% allowed in accordance with 310 CMR 10.58(4)d(1):   1. Within 200 foot riverfront areas, the issuing authority may allow the alteration of up to 5000 square feet or 10% of the riverfront area within the lot, whichever is greater, on a lot recorded on or before October 6, 1997 or lots recorded after October 6, 1997 subject to the restrictions of 310 CMR 10.58(4)(c)2.b.vi., or up to 10% of the riverfront area within a lot recorded after October 6, 1997, provided that: A 100 foot wide area of undisturbed vegetation is provided. The inner riparian zone is undisturbed. Stormwater is managed according to standards established by the Department in its Stormwater Policy. As a single-family dwelling, the project is exempt from Stormwater management Standards. Roof run-off is to be directed to subsurface drywells. Proposed work does not impair the capacity of the riverfront area to provide important wildlife habitat functions. The construction will occur within existing lawn area and will not require the removal of natural vegetation. The proposed mitigation will convert existing lawn to a natural buffer to the resource areas, enhancing the wildlife habitat interest. Proposed work shall not impair groundwater or surface water quality by incorporating erosion and sedimentation controls and other measures to attenuate nonpoint source pollution. A work limit line/erosion control barrier is to be established prior to any site work being done and shall be maintained until project completeness, including the stabilization of sediments. If you have any questions, or require additional information, please call me at 774-323-0603. Thank you, Lynne Hamlyn Consulting 690 Thousand Oaks Drive Brewster, MA 02631 774-323-0603