Busa Land Use Proposal Committee Report 03-14-2011

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22.2 Environmental Resource Areas Due to its location along the northern shore of the Arlington Reservoir and the eastern shore of the Munroe Brook, there are several protected environmental resource areas on the Busa land. Each of these resource areas has a setback within which land use is restricted. The surveyor retained the services of an environmental firm that field - delineated the limits of the resource areas according to state and location regulations. Their field limits have not been confirmed by the Lexington Conservation Commission, but are shown on the site survey. The resource areas and their setbacks are under the jurisdiction of the Lexington Conservation Commission, and proponents of any proposed development in these areas must submit a "Notice of Intent " The performance standards a project must meet include the incorporation of state standards, an assessment of stormwater runoff, proposed structures in a floodplain, wildlife habitat impact and mitigation, and work within buffer zones. The following resources areas are found on the Busa land. • Wetland Limits: The limits of the wetlands were field- determined on October 6 and 7, 2010, according to state and local requirements. The Town of Lexington's Wetland Bylaw requires the assessment of impacts of a project within the 25' buffer zone, 50 ' buffer zone, and a 100' buffer zone. The wetland limits are shown as "WLF" on the site survey. While the wetland limits are entirely beyond the Busa land property, the buffer zone limits are on the Busa land along its southern and western borders • Flood Zone AE ( "Special Flood Hazard Areas subject to inundation by the 1- percent- annual- chance flood "): This limit is generally taken from the National Flood Insurance Program map. There is a small area of Flood Zone AE in the southwestern corner of the Busa land. • Riverfront Area: This area is determined by "mean annual high water" along a river or stream and has a 100' and 200' offset in which site development is regulated. This applies along Munroe Brook and, therefore, there is a small amount of "riverfront area" in the northwestern and southwestern corners of the property. The report prepared by Norse Environmental Services in October of 2010 on resource areas is included in Appendix 7.1 of this report. 2.3 Applicable Codes The BLUPC assumes that all applicable codes will apply to future development at the Busa site. These would include building codes, environmental requirements and codes, and universal accessibility codes such as the Americans with Disabilities Act (ADA) and the requirements of the Massachusetts Architectural Access Board (MAAB). Should the future land use of the Busa site include the retention and ongoing use of any of the existing structures (farm stand, greenhouses), the Town may want to obtain a detailed assessment of the conditions of these structures relative to current codes. Busa Land Use Proposal Committee Report Page 11 / 52