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Home My WebLink About2021-08-02-CONCOM-min Jg MORN/N PCO O p,Q ; �w PUBLIC MEETING MINUTES Conservation Commission APR]L 19TH Meering broadcasted by LexMedia LFX114 GT O� AGENDA Monday,August 2, 2021, 6:30 p.m. This Conservation Commission meeting was held remotely via Zoom, an online meeting platform. Public Participation via calling in or using your computer was encouraged and a recording will be available through LexMedia as soon as possible after the meeting. Commissioners Present: Kevin Beuttell, Duke Bitsko, Ruth Ladd (arrived at 7:00 pm), David Langseth and Holly Samuels (not present: Alex Dohan and Philip Hamilton) Associate Members Present: Jason Hnatko Staff Present: Karen Mullins, Conservation Director 6:30 PM New Business/Pendine Matters Insignificant Plan Change/Conservation Plan Modification: 72 Kendall Road, ViewPoint Cloud Permit# CPM-21-17, DEP4201-1170, CNOI-19-32 (request to install fence in rear yard) Mr. and Ms. Hongying Gao and Biao Huang, the recent buyers of 72 Kendall Road, are requesting to install fencing in the rear yard for protection of their small dog. This fence will be in addition to the required Feno markers as per the Order of Conditions. Neither the exact location of the gates nor the method of construction for the fence have yet been determined and the Commission requests that the applicant confirm with the fencing company and then seek approval from the Commission before installation. 13:50 (LexMedia Recording) Insignificant Plan Change/Conservation Plan Modification: 500 Shire Way, ViewPoint Cloud Permit#CPM-21-18, CDOA-21-1 (approve updated Operation & Maintenance Plan) Mr. Brian Lawlor, Civil Engineer with SMMA, said he met on site with Ms. Mullins and a representative from the Cambridge Water Department to discuss and amend the Operation and Maintenance Plan, with regard to a reduction of treated areas, an increase in seasonal sweeping, and a change in product for de-icing. Mr. Lawlor stated that there was also a change in product from Stormceptor to Hydroworks but that they are identical units in terms of size and performance. The Commission recently approved a project with a similar swap and therefore did not require an Engineering review to approve. On a motion by Ms. Samuels and seconded by Mr. Beuttell, the Commission voted 4-0 by roll call vote to approve this request as an Insignificant Plan Change. Record of vote as follows: Duke Bitsko —Aye Kevin Beuttell—Aye Holly Samuels —Aye David Langseth—Aye 19:00 (LexMedia Recording) 15 Volunteer Way- Ashok Patel, update on expansion of work limit and changes to the site within the 100-foot buffer zone Mr. Richard Kirby, LEC Environmental, Mr. Tim Power, PVI Site Design, Mr. Ashok Patel and Mr. Kamlesh Patel, presented to the Commission. Plans were provided that show proposed changes to Feno marker locations. The Lexington Engineering Department is requesting soils data and drawdown time calculations to show the system drains within 72 hours. This will be continued so the representatives can respond to the Engineering comments. 47:45 (LexMedia Recording) 14 Village Circle: update on enforcement order, violation of patio work without Conservation approval Mr. Mark Arnold, Goddard Consulting, presented before the Commission. An 18-inch recharge trench around the patio was added to the plan to capture stormwater. The buffer strip was reduced from 4 feet to 3 feet and additional Feno markers added as requested by the Commission. A special condition will be added to include a geotextile filter fabric to the outer vertical wall of the recharge trench. On a motion by Mr. Beuttell and seconded by Ms. Samuels, the Commission voted 5-0 by roll call vote to approve the restoration plan through an enforcement order. Record of vote as follows: Duke Bitsko —Aye Kevin Beuttell—Aye Ruth Ladd—Aye Holly Samuels —Aye David Langseth—Aye 55:40 (LexMedia Recording) New Public Meetings/Hearings Amendment to Order of Conditions —6 Blinn Road ViewPoint Cloud Permit#AOOC-21-7, DEP#201-1126, BL# 1083 Applicant/Property Owner: Lauren Dillon Project: request to modify the design details and specifications of a previously approved subsurface infiltration chamber within the 100-foot buffer zone to Bordering Vegetated Wetlands. *Vote to issue the Amended Order of Conditions if the hearing is closed. Documentation Submitted.- - ubmitted:— Letter from Engineer and hydrograph attachments; From: Molly Obendorf, PE, Stamski and McNary, Inc.; To: Lexington Conservation Commission; Date: 7/l/2021; — "Interim As-Built Amended Order of Conditions Plan"; Prepared by: Stamski and McNary, Inc.; Stamped and signed by: George Dimakarakos, PE Civil No. 41281; Dated 11/30/2020 and revised through 6/14/2021; — Engineering Review; Memorandum; From: Michael Sprague, Engineering; To: Karen Mullins, Conservation; RE: 6 Blinn Rd AOOC 2; Date: 7/27/2021; Ms. Lauren Dillon, property owner, presented the request to modify the design details of the subsurface infiltration system. The request received a favorable engineering review. On a motion by Ms. Samuels and seconded by Mr. Beuttell, the Commission voted 5-0 by roll call vote to close the hearing. Record of vote as follows: Duke Bitsko —Aye Kevin Beuttell—Aye Ruth Ladd—Aye Holly Samuels —Aye David Langseth—Aye On a motion by Mr. Beuttell and seconded by Mr. Bitsko, the Commission voted 5-0 by roll call vote to issue the Amendment to the Order of Conditions. Record of vote as follows: Duke Bitsko —Aye Kevin Beuttell—Aye Ruth Ladd—Aye Holly Samuels —Aye David Langseth—Aye Request for Partial Certificate of Compliance: 6 Blinn Road, ViewPoint Cloud#COC-21-13, DEP4201-1126, BL# 1083 (vote to issue if the Amended Order of Conditions is issued) On a motion by Ms. Samuels and seconded by Mr. Beuttell, the Commission voted 5-0 by roll to issue the Partial Certificate of Compliance with ongoing conditions related to the two-year monitoring period for restoration plantings. The property owner will provide proof of replacing the red maple cultivars with a native species. Record of vote as follows: Duke Bitsko —Aye Kevin Beuttell—Aye Ruth Ladd—Aye Holly Samuels —Aye David Langseth—Aye 1:14:03 (LexMedia Recording) Notice of Intent—Drummer Boy Way ViewPoint Cloud Permit# CN0I-21-33, DEP#201-1234 Applicant: Diane Bernath, First Realty Management Property Owner: Drummer Boy Homes Association, Inc. Project: Documentation Submitted.- - ubmitted:— "Pavement Rehabilitation Cluster 11"; Sheet C-1 "Proposed Site Plan"; Sheet C-2 "Sitework Details 41"; Sheet C-3 "Erosion and Sediment Control Notes and Details"; Prepared by: DGT Associates; Stamped and signed by: Bert E. Corey, PE Civil No. 48423; Date: 7/l/2021; — "Stormwater Management Design and Runoff Calculations Report for Drummer Boy Condominiums"; Prepared by: DGT Associates; Stamped and signed by: Bert E. Corey, PE; Date: 7/1/2021 — WPA Form 3-Notice of Intent application; Prepared for the Applicant: First Realty Management; Prepared by: Bert Corey, DGT Associates; Date signed by the Applicant: 6/30/2021; Date signed by the Property Owner and Representative: 7/l/2021; — Engineering Review; Memorandum; From: Michael Sprague, Engineering; To: Karen Mullins, Conservation; RE: 1-108 Drummer Boy Way NOI Comments; Date: 7/27/2021; Mr. Kevin Riopelle, DGT Associates, presented to the Commission. Questions and Comments from the Commission: — Can the outlet structure on the southeast corner be pulled closer to the building and away from the "no-disturb" zone? — Can you provide a loam and seed mix that is proposed to be used — Why is no riprap being proposed? — What is the character of the outlet? — How was the size of the riprap on outlet number number 2 calculated? — Is the outlet being proposed on the existing lawn? Are there no trees and/or shrubs? Responses from the Representative: — Performed soil testing at the east end of the parking area to see if groundwater recharge would be possible, but found poor fill material and high groundwater. Unable to incorporate stormwater recharge given the topographic and soil conditions. — Proposing to connect the existing catch basin after the stormwater treatment unit. — Proposing to replace the loam and seed mix with a like-kind mix. — The size of the rip rap is based on stormwater regulations and the calculations are in the report. — The tree line is at the wetland line and will be maintained as existing lawn on the slope where the outlet is being proposed. On a motion by Ms. Beuttell and seconded by Ms. Ladd, the Commission voted 5-0 by roll call vote to close the hearing. Record of vote as follows: Duke Bitsko —Aye Kevin Beuttell—Aye Ruth Ladd—Aye Holly Samuels —Aye David Langseth—Aye 1:28:13 (LexMedia recording) Continued Public Meetings/Hearings Notice of Intent—8 Paddock Lane ViewPoint Cloud Permit# CN0I-21-29, DEP#201-1230 Applicant/Property Owner: Sabrina and Raffi Afeyan Project: proposed front and rear additions, and the addition of a patio, deck, walkway and stairs to a single-family dwelling located within the 100-foot buffer zone to Bordering Vegetated Wetlands Previous Meeting Date: 7/6/2021 Supplemental Documentation: — Revised Plans; "Existing Conditions", "Site Plan and Demolition", "Grading, Drainage and Erosion Control Plan", and "Details"; Prepared by: Allen & Major Associates, Inc.; Stamped and signed by: Carlton M. Quinn, PE Civil No. 49923; Date: 6/15/2021; Revised: 7/26/2021; — "Drainage Report"; Prepared by: Allen & Major Associates, Inc.; Prepared for: Sabrina List Afeyan, Property Owner; Date: 6/15/2021; Revised: 7/26/2021; — Letter from Engineer; From: Allen & Major Associates, Inc.; Signed by: Steven Lee, PE; To: Lexington Conservation Commission; RE: A&M Project#2931-01; Date: 7/26/2021; — Form 11: Soil Suitability Assessment for In-Site Sewage Disposal; Locus: 8 Paddock Lane, Lexington, MA; Pages 1 through 8 of 8; Date signed by Steven Lee, Soil Evaluator: 7/26/2021; — Engineering Review; From: Michael Sprague, Engineering; To: Karen Mullins, Conservation; RE: 8 Paddock Lane NOI Comments 2; Date: 7/29/2021; Mr. Steven Lee, Project Engineer with Allen & Major Associates, Inc., presented to the Commission. There are outstanding comments from the Engineering Department. The Estimated Seasonal High Groundwater Table was high, as expected, and the applicant had to raise the bioretention area about two feet. The Commission raised concern on the twin Maples and the possibility of the roots becoming partially buried. On a motion by Mr. Beuttell and seconded by Ms. Samuels, the Commission voted 5-0 by roll call vote to continue the hearing to the August 16, 2021 meeting at the applicant's request. Record of vote as follows: Duke Bitsko —Aye Kevin Beuttell—Aye Ruth Ladd—Aye Holly Samuels —Aye David Langseth—Aye 1:42:41 (LexMedia Recording) ViewPoint Cloud Permit# CN0I-21-20, DEP#201-#### Notice of Intent: 75 Concord Avenue Applicant/Property Owner: American Towers LLC Project: to perform a boardwalk repair, fence installation and vegetation maintenance around the AM radio tower site within the 100-foot Buffer Zone to Bordering Vegetated Wetlands Previous Meeting Date: 5/24/2021 Supplemental Documentation: None On a motion by Ms. Samuels and seconded by Ms. Ladd, the Commission voted 5-0 by roll call vote to continue the hearing to the August 16, 2021 meeting at the applicant's request. Record of vote as follows: Duke Bitsko —Aye Kevin Beuttell—Aye Ruth Ladd—Aye Holly Samuels —Aye David Langseth—Aye 1:44:00 (LexMedia recording) Notice of Intent: 12 Ledgelawn Avenue ViewPoint Cloud Permit# CN0I-21-32, DEP#201-1235 Applicant/Property Owner: Amy Hung Project: Proposed construction of a garage and living space addition to a single-family dwelling and expansion of a driveway. The proposed activities are located within the outer portion of 'Previously Developed' Riverfront Area associated with an offsite, unnamed perennial stream. The Applicant proposes to implement erosion controls to minimize the potential for impacts to the resource areas during construction, and stormwater management to improve existing site conditions. Previous Meeting Date: 7/19/2021 Supplemental Documentation: — "Drainage Plan"; Sheet C-0 and Sheet C-1; Prepared by: Gala Simon Associates, Inc.; Stamped and signed by: Alberto M. Gala, PE Civil No. 36434; Date: 6/30/2021 and revised 7/21/2021 "Tree protect.; DS"; Ms. Julia Hoogeboom presented the updated plan that included additional tree protection and also the updated stormwater report that captures the entire roof runoff into the proposed infiltration system, as opposed to only a portion of the existing and proposed roof runoff that was proposed originally. On a motion by Ms. Ladd and seconded by. Mr. Beuttell, the Commission voted 5-0 by roll call vote to close the hearing. Record of vote as follows: Duke Bitsko —Aye Kevin Beuttell—Aye Ruth Ladd—Aye Holly Samuels —Aye David Langseth—Aye On a motion by Ms. Ladd and seconded by Ms. Samuels, the Commission voted 5-0 by roll call vote to issue the Order of Conditions. Record of vote as follows: Duke Bitsko —Aye Kevin Beuttell—Aye Ruth Ladd—Aye Holly Samuels —Aye David Langseth—Aye 1:50:10 (LexMedia recording) Abbreviated Notice of Resource Area Delineation: 475 Bedford Street ViewPoint Cloud Permit# CORD-21-1, DEP#201-#### Applicant/Property Owner: Cresset Lexington LLC Project: confirmation of resource areas Previous Meeting Date: 7/19/2021 Supplemental Documentation: None *The Applicant has requested a continuance to the August 16, 2021 meeting On a motion by Mr. Beuttell and seconded by Ms. Ladd, the Commission voted 5-0 by roll call vote to continue the hearing to the August 16, 2021 meeting at the applicant's request. Record of vote as follows: Duke Bitsko —Aye Kevin Beuttell—Aye Ruth Ladd—Aye Holly Samuels —Aye David Langseth—Aye 1:50:50 (LexMedia recording) New Business/Pendine Matters, Continued Request for Partial Certificate of Compliance: 20 Cooke Road, ViewPoint Cloud Permit# COC- 21-14, DEP4201-1089, BL41046 This request will be continued to allow staff more time for review and to perform a compliance site visit. 1:55:35 (LexMedia recording) Request for Certificate of Compliance: 11 Norton Road, ViewPoint Cloud Permit#COC-21-17, DEP4201-1190, CNOI-20-20 On a motion by Ms. Ladd and seconded by Ms. Samuels, the Commission voted 5-0 by roll call vote to issue the Partial Certificate of Compliance with continuing restoration monitoring required. Record of vote as follows: Duke Bitsko —Aye Kevin Beuttell—Aye Ruth Ladd—Aye Holly Samuels —Aye David Langseth—Aye 1:56:50 (LexMedia recording) Issue Order of Conditions: Lowell Street and North Street, ViewPoint Cloud Permit#CNOI-21- 30, DEP4201-1231 On a motion by Ms. Ladd and seconded by Ms. Samuels, the Commission voted 5-0 by roll call vote to issue the Order of Conditions. Record of vote as follows: Duke Bitsko —Aye Kevin Beuttell—Aye Ruth Ladd—Aye Holly Samuels —Aye David Langseth—Aye 1:58:09 (LexMedia recording) Issue Order of Conditions: Lowell Street and Maple Street(constructed wetlands next to Harrington Elementary School), Viewpoint Cloud Permit#CNOI-21-27, DEP4201-1232 A condition will be added that any plan revisions be approved by the Conservation Commission through a Conservation Plan Modification request. On a motion by Ms. Ladd and seconded by Mr. Beuttell, the Commission voted 5-0 by roll call vote to issue the Order of Conditions. Record of vote as follows: Duke Bitsko —Aye Kevin Beuttell—Aye Ruth Ladd—Aye Holly Samuels —Aye David Langseth—Aye 2:00:10 (LexMedia recording) Issue Order of Conditions: 279 Concord Avenue, ViewPoint Cloud Permit# CNOI-21-28, DEP4201-1233 On a motion by Ms. Samuels and seconded by Ms. Ladd, the Commission voted 5-0 by roll call vote to issue the Order of Conditions. Record of vote as follows: Duke Bitsko —Aye Kevin Beuttell—Aye Ruth Ladd—Aye Holly Samuels —Aye David Langseth—Aye 2:00:53 (LexMedia recording) Issue Amendment to the Order of Conditions: 6 John Hosmer Lane, ViewPoint Cloud Permit# AOOC-21-6, DEP4201-986, BL# 944 On a motion by Mr. Beuttell and seconded by Ms. Samuels, the Commission voted 5-0 by roll call vote to issue the Amendment to the Order of Conditions. Record of vote as follows: Duke Bitsko —Aye Kevin Beuttell—Aye Ruth Ladd—Aye Holly Samuels —Aye David Langseth—Aye 2:04:11 (LexMedia recording) Schedule site visits for 8/16/2021 No site visits were scheduled for the 8/16/2021 meeting Approve minutes: 7/19/2021 meeting On a motion by Ms. Samuels and seconded by Ms. Ladd, the Commission voted 5-0 by roll call vote to approve the Minutes of the July 19, 2021 meeting. Record of vote as follows: Duke Bitsko —Aye Kevin Beuttell—Aye Ruth Ladd—Aye Holly Samuels —Aye David Langseth—Aye 2:08:25 (LexMedia recording) Reports: Bike Advisory, Community Gardens, Community Preservation Committee, Greenway Corridor Committee, Land Acquisition, Land Management, Land Steward Directors, and Tree Committee, HIP Working Group Ms. Samuels informed the Commission that the hoop house at Lower Vine Brook is secure and the crew is working towards setting up the irrigation lines next. On a motion by Ms. Ladd and seconded by Mr. Beuttell, the Commission voted 5-0 by roll call vote to adjourn the meeting at 8:42 PM. Duke Bitsko —Aye Kevin Beuttell—Aye Ruth Ladd—Aye Holly Samuels —Aye David Langseth—Aye Respectfully Submitted, Meghan McNamara Conservation Department Assistant Approved: 8/30/2021 Archived: 8/31/2021