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HomeMy WebLinkAbout2000-01-18-CONCOM-min.pdf MINUTES - LEXINGTON CONSERVATION COMMISSION JANUARY 18, 2000 Commissioners present: Duke Bitsko, Angela Frick, Philip Hamilton and Richard Wolk(left at 8.15). Absent: Lisa Bach, Bebe Fallick and Joyce Miller. Others present: Marilyn Nordby and Linda Gaudet. Vice Chairman Hamilton called the meeting to order at 7.45 p.m. in Room G-15, Town Office Building. CONT'D DET #00-1 5 Ledeelawn Avenue. Andover Renovation Solutions 7 45 p.m. Present: William Penny, Andover Renovation Solutions; Julita Kussmaul, owner Others are listed in the file. This is a continued meeting to review the revisions which were required by the Commission to the Notice of Intent and the plan that was presented at the January 4 meeting. They included a more definitive description of the project on the NOI, relocating the stormwater leaching system to protect major mature sugar maples on the lot and extending the hay bale line. The new plan incorporated the changes. The drainage system was modified to include two leaching systems rather than one. The runoff from the side addition and the rear of the house will be directed to a leaching chamber in the back yard, and the runoff from the front addition will be directed to a leaching chamber at the front of the lot. A soil study was done and the information reflected on the plan. The leaching chambers are located well above the seasonal high water mark. Mr. Hamilton read the Engineering Report which noted that the elevations of the proposed leaching chambers should be identified and that a maximum feasible separation should be maintained above the seasonal high groundwater elevation. Mr Penny said the leaching chambers will be 18 inches below grade with one foot of stone below them which is well above the water table. He will submit a plan to the office tomorrow with the elevations of the leaching chambers noted. It was moved, seconded and unanimously voted to issue a negative determination with conditions pending receipt of the plan with the notation requested. CERTIFICATE OF COMPLIANCE. 25 Fairbanks Road - BL-389 It was moved, seconded and unanimously voted to issue the Certificate of Compliance for 25 Fairbanks Road. Mr. Thenen has offered to give Commissioners a tour of the house if they wish. Minutes - It was moved, seconded and unanimously voted to approve the minutes of January 4, 2000, as amended. MINUTES LEXINGTON CONSERVATION COMMISSION 1/18/00 PAGE 2 DET #00-2. 113/115 Concord Avenue. A. & G. Kazazian. 2 single-family houses 8 p.m. Present: Bill Hubner,Architect; Anahid and George Kazazian, applicants. Others are listed in the file. Mr. Hubner presented the plan which includes the construction of two single-family dwellings and a common driveway Leaching basins adequate for the 100-year storm events are proposed for drainage mitigation. The back of one of the dwellings is very close to the boundary of the 100-foot buffer so there will be some disturbance of land within the buffer zone during the construction. This area will be delineated with a limit-of-work barrier as shown on the plan. For the 100-foot buffer they propose the following: the first 20 feet will be landscaped with lawn and trees; within the next 20 feet there will be only selective clearing leaving major shrubs and trees or trees that will develop into major trees; and the last 60 feet will remain untouched and provide a natural dense vegetated buffer, much of which is the invasive species such as Japanese knotweed. Mr Hamilton read the Engineering Report which finds that the plan complies with the drainage by-law The Commission agreed that the natural buffer should be as wide as possible. Mr. Bitsko pointed out that the invasive species are difficult to eliminate and it will take 2-3 clearings to do so; planting trees may help support eliminating the species. He also noted that there are wetland seed mixtures available to plant in this area. If the applicant decides to do additional work, they should submit a plan for review An additional filing will not be necessary It It was moved, seconded and unanimously voted to issue a negative determination with conditions. (Dick Wolk left the meeting.) Cont'd. Hearin¢, Old Smith Farm, 160/170 Wood St. Wood St. R.T (201-457) 8.20 p.m. With the applicant's consent,this meeting is being continued to February 1 in order that a quorum of members be present. Postal Service - Caleb reported that there is $65,000 of the original $90,000 left from the fine paid by the postal service for polluting the Cambridge Reservoir from the construction of its facility in Waltham. A Federal Judge is allowing the funds to be used for environmental education. The Mass. Environmental Trust is responsible for dispersing this money Mass. Audubon had the winning proposal and over a two-year period will develop curricula for middle and high schools focusing on wetlands protection and understanding the functions of wetlands and the impacts on drinking water. There will be a training program for teachers in the surrounding areas and the Hobbs Brook Res will be an example. Teachers will be given a $500 stipend during the education process. Mass. Audubon will also contribute funds and will search for further funding to make this available to others. The program will begin in May MINUTES LEXINGTON CONSERVATION COMMISSION 1/18/00 PAGE 3 Discussion—Brian Gilbert—Harrineton School Soccer Field Mr Hamilton gave a brief history related to this discussion. The Recreation Committee decided that the Town needed another soccer field to accommodate the growth in the program. Hennessy Field was their first choice, but being very controversial was eventually transferred to Conservation. When this was done, there was an agreement that the Town would find another location for the field and it has been determined that the best location is at the Harrington School on Town-owned land. The Commission is committed to work with the Town to see this happen. Brian Gilbert showed the Commission a master plan he had developed for the Harrington athletic field which includes soccer and baseball fields. The land has already been surveyed as part of the school building project and the wetlands have been flagged. The wetlands and the 100-foot buffer zone are shown on the plan. His plan requires reconfiguration of the existing field and additional site work. The work will include some major grading and removal of fill from the site. He said he has put a lot of work into the proposed plan and would like to go forward and requested direction on how he should proceed. It was decided that a Determination should be filed as soon as possible for the approval of the wetlands line. Ms. Nordby will help Mr. Gilbert with the filing. Mr. Bitsko will walk the site with Mr. Gilbert to review the plan for the fields. Mr. Gilbert said that he is also reviewing the plan with other concerned Town committees, including school and recreation, within the next couple weeks. DET #00-3 35 Woodnark Circle, M. & D Nokes 8:45 p.m. Ms. Nordby reported that this meeting has been continued to February 15 because of lack of information. Discussion - 15 Sunny Knoll Terrace - Det. #99-2 Cedwyn Morgan of Hydro-Environmental Technologies, Inc. (HETI) explained that the Commission issued a negative determination in March of 1999, allowing the installation of a remediation system associated with a fuel oil leak at 15 Sunny Knoll Terrace. Because ground water is not high enough, which is needed to accomplish the mitigation quickly, they have requested authorization from the EPA to change the plan to use`BioSolve"to treat the area. He also needed approval of the Commission for this change. However DEP will not approve the plan until they are able to evaluate additional data. Therefore the BioSolve program is on hold. They will proceed by removing as much of the contaminated soil as possible from under the basement slab. The Commissioners had no problem with this procedure, but HETI should request a meeting with the Commission if they eventually decide to go forward with BioSolve flushing project. REPORTS Hardy Pond Brook Proiect - Ms.Nordby reported that she received a draft report from the Army Corps of Engineers on their investigation of stream channel cleaning methodologies to reduce flooding. It may provide information for one of the missing segments of the Hardy's Pond Brook cleaning. MINUTES - LEXINGTON CONSERVATION COMMISSION 1/18/00 PAGE 4 759 Waltham St. Project - 201-431 - Ms. Nordby reported that all work required in the Order of Conditions had been completed with the exception of removing the doors from the lower level of the garage. Mr Carroll, or his manager, Anthony Guarino, will be in to talk with the Commission on February 15 Site Visits Since Commissioners have already visited the Old Smith Farm site, Mr. Hamilton said he would take Mr. Bitsko on a tour of the site. It was voted to adjourn at 9:30 p.m. Respectfully submitted, Linda A. Gaudet Secretary