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HomeMy WebLinkAboutMinutes - CC - 12/19/2019 Conservation Commission Minutes of 12/19/19 APPROVED MINUTES COHASSET CONSERVATION COMMISSION MEETING THURSDAY, DECEMBER 19, 2019 WILLCOTT COMMONS IN ATTENDANCE: Justin Pimpare, Chair Eric Eisenhauer, Vice Chair Alex Koines, Member James Rosebach, Member Patricia Grady, Member Jeff Summers, Conservation Agent Angela Geso Conservation Administrator ABSENT: Chris MacFarlane, Member Maryanne Wetherald, Member Meeting called to order at 7:30 PM. Minutes for Approval: June 6, 2019 Motion: Member Eisenhauer Second: Member Koines Approved: 3-0-2 (ineligible: not at hearing) July 25, 2019 Motion: Member Eisenhauer Second: Member Koines Approved: 4-0-1 (ineligible: not at hearing) August 8, 2019 Motion: Chair Pimpare Second: Member Koines Approved: 4-0-1 (ineligible: not at hearing) 7.40 PM, Amended Order of Conditions NOI 18-12 44 Border St/Seawall McGoldrick Con't from 11171191, In attendance to represent agenda item: John Cavanaro/Cavanaro Consulting; George McGoldrick/Applicant; Peter Falk/Rivermore Engineering Documents Presented to Supigort agenda item: Revised Plans The intent is to recreate the wall as it formerly existed. A similar concept as outlined in the original application will be done but on smaller scale. The project will now be reconstructed with granite block, sheeting and casting for support and durability. The granite blocks will be pinned to a poured concrete wall for stability. Engineer Peter Falk described the process of pinning the blocks to each other using concrete pins that will then lock into the wall. Footings will be done first, then the blocks will be added. Water will be blocked out of the area work. The site will have a coffer dam structure to allow for the concrete wall to be poured. The applicant still needs to get plan approvals from the Army Corp of Engineers and the DER There is an Order of Conditions in existence that has gone no further than review by the Conservation Commission. The Order expires 12/19/19 but could be extended to accommodate the work if it can be done soon. The flounder spawning season has to be taken into consideration as far as starting the construction. The applicant indicated the work could start as early as September 2020 with an estimated month to complete the work. MOTION: By Chair Pimpare to amend the Order of Conditions for NOI 18-12 as follows: Condition 53 to extend the date from 12/31/19 to 5/1121 for all work to be completed; Condition 31 to delete the old plan and adopt the new plan dated 12/16/19 from Cavanaro Consulting and Rivermore Engineering; to add a coffer dam to the new site plan; to hire a monitor to perform oversee the project and bring in a geotechnical engineer to ensure the work is complete, both at the applicant's expense. SECOND: Member Koines VOTE: 5-0 Unanimous Conservation C0111mission Minutes of 12/19/19 8:00 PM: NOI 19-22 fit Nichols Private Pier Walat In attendance to re resent agenda item: Jeff Hassett/Morse Engineering Documents presented to support agenda item: N01 Application and Plans The applicant is looking to install a new residential dock with 50-ft. frontage on Little Harbor. The existing dock is in total disrepair. Two new posts will be anchored to the ledge. The gangway will accommodate water and tidal movement. The float and sloped gangway will be removable during winter. The construction is pending decisions from the Zoning Board of Appeals and DER Agent Summers said the DEP has permitting guidelines for small docks and piers and that the pier can rest on the bottom during low tide. MOTION: By Member Koines to close the public hearing and issue and Order of Conditions for NOI 19-22 for work proposed at 61 Nichols Road. SECOND: Member Eisenhauer VOTE: 5-0 Unanimous MOTION: By Member Koines to close the public hearing for NOI 19-22 and issue a variance for a work within the 50-ft. buffer zone for work proposed at 61 Nichols Road. SECOND: Member Eisenhauer VOTE: 5-0 Unanimous 8:20 PM: SW 19-29 31 Deep Run New Construction Archia Homes In attendance to represent agenda item: Joshua GreenlMerrill Engineers and Landscaping Documents areserits to support agenda-item: SWP Application and Plans The applicant wants to demo and rebuild a new single family dwelling with a paved driveway, attached garage on a slab foundation and an inground pool and cabana accessed by an existing gravel driveway. The runoff in front will flow into a pea stone trench to a rain garden. The rear runoff will flow to the rear property line. Chair Pimpare said the pool installation could require chipping or blasting depending on the amount of ledge.Agent Summers said the original proposal showed only a rain garden for mitigation but the new proposal shows stone trenches and infiltration chambers. Joshua Green explained that infiltration measures and the rain garden will capture runoff in the front. The gravel driveway will absorb much of the runoff and the shed and cabana area in the back has its own infiltration system. Impervious areas are covered by infiltration chambers. The planting plan includes a buffer around the property; one tree will be removed to accommodate the cabana and a tree line and wooded area to the right of the property will remain. MOTION: By Chair Pimpare to issue Stormwater Permit 19-29 with the following condition: to submit to staff by January 3, 2020 a revised site plan defining the limit of work on the northwest corner of the property and a revised planting plant showing the amount and size of trees on the site. SECOND: Member Koines VOTE: 5-0 Unanimous 8:40 PM: NOI 19-24 40 Parker Ave - Boat Ramp Upgrade -Town of Cohasset In attendance to represent agenda item: Lori Gibbons/Harbormaster; Carlos Pena/Foth Engineering Documents presented to sluipport agenda item: N01 Application and Site Plan The ramp is old and needs to be upgraded for year-round usage. The new ramp will not go beyond the existing dock so there will be no interference or constriction of waterways. The existing ramp will be removed, there will be borings at top and bottom of ramp and approximately 80 cubic yards of fill will be brought in. Construction is expected to start in the fall of 2020. A coffer dam will be installed prior to the start of work. MOTION: By Chair Pimpare to close the public hearing and issue an Order of Conditions for work proposed at 40 Parker Avenue with the following conditions: the contractor must submit a dewatering plan prior to any work being done; there can be no work between February 1 and June 30 unless a coffer dam is installed per Marine Fisheries, SECOND: Member Koines VOTE: 5-0 Unanimous Conservation Commission Minutes of 12/19/19 MOTION: By Chair Pimpare to issue a variance for work proposed within the 50-ft. buffer zone at 40 Parker Avenue. SECOND: Member Koines VOTE: 5-0 Unanimous 8.55 PM: RDA 19-18 SWP 19-31 - 62 Black Rock Road - New Home Construction Greeni In attendance to represent agenda item: Paul Mirabito, Greg Tansey/Ross Engineering; Abutters Jeffrey Chubb, Katie Dugan Documents Rresented to support agenda item: RDA and SWP Applications and Site Plans The applicants want to build a new home with some work being done within the 50-ft. to 100-ft buffer zone. Work within the buffer zone is mostly landscaping and grading. Environmental Consultant Brad Holmes delineated the property and determined the only resource area on the site will not be affected by the construction. Greg Tansey said most of the runoff flows to the street and an adjacent wooded area. Roof runoff goes to infiltration chambers and recharges into the ground and there is mitigation in place that will reduce overflow into the street. Mr. Tansey also explained how runoff redirected to a wetlands area flows under Black Rock Road and daylights within the wetlands area. In addition there is permeable pavement on the driveway, capacity under the driveway for holding water, a swaling system on the south side of the property and a substantial amount of stormwater mitigation. The commission agreed to approve the RDA application and continue the Stormwater hearing to 1/9/20. STORIVIWATER HEARING CONTINUED TO 1/9/20. MOTION: By Chair Pimpare to close the public hearing for RDA 19-18 and issue a Negative 3 Determination of Applicability with the following conditions: that no work be done and no staging of equipment and materials take place within the 50-ft. buffer zone; and that the only approved work in the 50-ft. buffer zone is the daylighting of 4-in. pipe SECOND: Member Koines VOTE: 5-0 Unanimous 9:10 PM: RDA 19-17 322 Forest Avenue Resource Area Determination —Parks In attendance to represent agenda item: Paul Mirabito, Greg Tansey/Ross Engineering The purpose of this application is to determine if an Isolated Vegetated Wetland (IVW) is within a resource area and to make owners aware of what their parameters are before any potential redevelopment.Agent Summers confirmed flagging on the property by Environmental Consultant Brad Holmes. The IVW is truly isolated within 25-ft. of the buffer zone. MOTION: By Chair Pimpare to close the public hearing and issue a Positive 5 and 6 Determination of Applicability as the area depicted on the site plan does come under the jurisdiction of the Cohasset Wetlands Bylaws but not under the State Wetlands Protection Act. SECOND: Member Koines VOTE: 5-0 Unanimous With no further business to discuss, motion was made by Member Eisenhauer, 2"d by Member Koines and voted 5-0 unanimous to adjourn. Meeting adjourned at 10:30 pm. / DATE APPROVED BY CONSERVATION COMMISSION: / O SIGNATURE OF CONSERVATION COMMISSION CHAIR: