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Home My WebLink AboutMinutes - CC - 09/19/2019 Cohasset Conservation Commission September 19,2019 APPROVED MINUTES COHASSET CONSERVATION COMMISSION MEETING THURSDAY, SEPTEMBER 19, 2019 WILLCOTT COMMONS IN ATTENDANCE: Justin Pimpare, Chair Chris MacFarlane, Member Alex Koines, Member Trish Grady, Member Maryanne Wetherald, Member James Rosebach, Member Jeff Summers, Conservation Agent Angela Geso, Conservation Administrator ABSENT: Eric Eisenhauer, Member Meeting called to order at 7:05 PM. Minutes for Approval: Moved to 10/3/19 7:05 PM: SWP 19-24 11 Great Brewster Trail—Hoff -Raze and Rebuild In attendance to represent agenda item: John Cavanaro/Cavanaro Consulting; Tom and Pam Hoff/Owners; Sue Hoadley and Corinna Martinez/Architects;Abutters Maryellen and Carlos Melendez; Jacqueline Clark; Documents presented to support agenda item: SWP Application and Site Map/Video and Alternate Plan by Carlos Melendez The applicant would like to raze an existing home and build a new single family home. The lot is loaded with ledge outcroppings, some sloping towards the abutter and major sloping to the road. John Cavanaro feels that adjusting the slope and installing an infiltration system between two large ledge outcrops will maintain but not increase the amount of runoff to the road.An impervious patio and walkways will also encourage runoff to be directed towards the road. The proposed project meets the performance standards of the stormwater bylaw. Abutter Clark asked for clarification on a riprap wall to the left of the property. John Cavanaro there is a 2-to-1 slope from the driveway to the abutter's property so rather than having vegetation the area will be used for drainage and stability. Ms. Clark asked if there is any alternative to the infiltration chamber location as shown on the plan. John Cavanaro said the test pits will ultimately prove the best siting. Abutter Carlos Melendez feels the site is a non-conforming parcel and there are issues that have not been addressed by the engineer. He estimates that based on his calculations 90% of the site is basically rock and there cannot be a discharge system sitting on rock. He feels that runoff will disappear in a natural direction which may impact his property and that locating the retention field to the rear of the house will support a massive out- build. John Cavanaro stated the percentages are based on an arbitrary area representative of soils on the property and test pits need to be performed to determine the exact conditions of the property. He asked to continue the meeting so his firm can conduct test pits and address some of the abutters'concerns. 7:20 PM: SWP 19-23 130 Nichols Rd Raze and Reconstruction Ra and Raczkowski/Owners In attendance to represent agenda item: John Cavanaro/Cavanaro Consulting; Rick Raczkowski and Helen Ra/Owners; Michael and Alicia Rawson/Abutters; Sean Papich/Landscape Design; Julia Nickerson/Sally Weston Associates; Robert& Mrs. Troy Documents resented to support agenda item: SWP Application; Site Plans (Alex Koines recused himself as abutter) The applicants propose to keep most of the existing dwelling but want to add a garage, porches, pool and a pervious patio. The existing driveway will have a reconfigured parking court. The lot is fairly level but has substantial sloping up from Nichols Road. They also want to replace the existing tennis court and install a Cohasset Conservation Commission September 19,2019 crushed stone infiltration bed beneath. The drainage would flow in 3 directions: some to a infiltration bed, some to a pervious area near the new tennis court, and some to vegetated area.A portion of the impervious driveway will be replaced with crushed stone. There will limited tree removal.Agent Summers said there are ledge outcroppings and the abutters are concerned with roof runoff concentrating in specific areas and will flow through the soil under bedrock to their properties.Abutter Robert Troy has concerns with a possible increase in wetness on his and other abutters' houses and quoted performance standards regarding aquatic ponds because there is a pond close to their properties. John Cavanaro said there is no work within the 100 ft. buffer zone and the pond is beyond the buffer zone. Abutter Mike Rawson said that runoff goes across the tennis court and makes it treacherous to walk around abutting yards. John Cavanaro feels the big issue is test pits and he does understand the abutters'concerns.At his request the hearing will be continued. CONTINUED TO OCTOBER 17 2019 7.35 PM: RDA 19-14 262 North Main Street—Brewer-Gara a Relocation Con't from 9/5119 In attendance to-represent a enda item: Clark Brewer/Owner Documents presented to support acienda item: Revised Plan Applicant Clark Brewer responded to questions from a previous meeting. He has reduced the scope of work in the buffer zone, is avoiding the resource area and has installed silt socks and other beneficial adjustments to the project. He is removing six trees and will install three new trees. MOTION: By Member Koines to close the public hearing and issue a Negative 2 determination for work proposed at 262 North Main Street. SECOND: Member MacFarlane VOTE: 5-0 (Member Grady recused) 7:45 PM: SWP 19-15 ATF - 149 King Street Shannon -Un ermitted Work CONTINUED FROM 8/8119 In attendance to represent agenda item: John Cavanaro/Cavanaro Consulting; Steven Ryder/Attorney DOCUMENTS 0- REVISED PLAN The applicant clear-cut a considerable amount of vegetation and native plantings from this property without obtaining the proper permit. The commission is asking that he restore the property according to their requirements. They feel the 10-ft. spacing between trees is too close and that a 20 to 25-ft. spacing is more desirable. There are 20 medium caliper honey locust trees on site that the commission would like to see replaced with a native species.Agent Summers and John Cavanaro will do a site visit to determine the best location for new plantings. Member MacFarlane feels a 40 to 50-ft. spacing at front of property would allow for a decent amount of trees and would ensure long-term viability. There are native species that would be readily available for a fall planting and John Cavanaro suggested to do this in a timely manner through an Enforcement Order with a deadline of 11/1/19. If the desired trees aren't readily available, the project would be extended to spring but would require necessary documentation. MOTION: By Member Koines to issue After-the-Fact Stormwater Permit 19-15 with the following conditions: a revised planting plan be submitted by Tuesday, October 1, 2019 to show twenty trees to be replanted at a location to be determined by the applicant and Agent Summers and that the new planting be native species available by November 1, 2019 SECOND: Member MacFarlane VOTE: 6-0 Unanimous MOTION: By Member Koines to issue an Enforcement Order for the After4he-Fact Stormwater Permit 19-16 with the previous conditions plus a condition stating if the species are unavailable by the November 1, 2019 deadline that the project be extended to spring with necessary documentation. SECOND: Member Wetherald VOTE: 6-0 Unanimous 8:00 PM: Show Cause: NO] 15-13 96 Howard Gleason Road Hermann (Postponed from 915119 Cohasset Conservation Commission September 19,2019 In attendance to represent a ends item: John Cava na ro/Cava naro Consulting An Order of Conditions from 2015 specified removal of invasive species within the buffer zone and eradication of fragmites.A landscaper that was hired was told to remove a certain amount of invasive vegetation but inadvertently cut down a grove of cedar trees across from the Cohasset Yacht Club which violated the Order of Conditions. It was estimated that 10 to 12 trees were cut down which the owner would replace.Agent Summers pointed out that the Order of Conditions expires in 2020, The Commission issued an Enforcement Order requiring the owner to submit a new Notice of Intent with a revised mitigation plan no later than 11/30/19. MOTION: By Chair Pimpare to issue an Enforcement Order requiring a mitigation plan filed with staff no later than November 30, 2019 for unpermitted removal of trees at 96 Howard Gleason Road. SECOND: Member Koines VOTE: 6-0 Unanimous With no further business to discuss motion to adjourn made by Member MacFarlane, second by Member Koines and voted 6-0 unanimous. Meeting adjourned at 8:30 pm. SIGNATURE OF CONSERVATION COMMISSION CHAIR: DATE APPROVED BY CONSERVATION COMMISSION: