1986-1999-ZONING BY-LAWS - Laserfiche WebLink

Home Browse Search

swales or other infiltration facilities shall be preceded by oil,grease and sediment traps or other best management practices to facilitate control of hazardous materials spills and removal of contamination and to avoid sedimentation of treatment and leaching facilities. All such artificial recharge systems shall be maintained in full working order by the owner(s)under the provisions of an operations and maintenance ' plan approved by the permitting authority to ensure that systems function as designed. Infiltration systems greater than three(3)feet deep shall be located at least one hundred(100)feet from drinking water wells. ;. Any infiltration basins or trenches shall be constructed with a three(3)foot minimum separation between the bottom of the structure and maximum groundwater elevation.", or take any other action related thereto. K Submitted by Board of Selectmen and Watershed Management Committee Explanation: The Town's current Groundwater Protection District zoning bylaw contains a fairly vague and difficult-to-implement standard for artificial recharge of stormwater from properties with impervious lot coverage in excess of 15%("a system for artificial recharge...that will not result in the degradation of water quality")that was suggested by model regulations developed by the state in the late 80s. The state's Department of Environmental Management and the Massachusetts Coastal Zone Management Office,with assistance from the Pioneer Valley Planning Commission,have recently developed more specific standards , and guidelines for stormwater management and artificial recharge,along with model ordinance language for infiltration practices. This proposed amendment is based on the suggested model ordinance language. It specifies use of those"Best Management Practices"contained in the state's recently-published Stormwater Management Handbook which provide some level of nitrogen removal,are appropriate for our soils and will minimize the impact of any hazardous materials spills on our waters as the basis on which applicants and Town boards will determine whether the bylaw's standard on degradation of groundwater quality has been met. The state's Handbook is also referenced as the source of technical standards for development of those best management practices. Motion made by George Costa. Motion: I move Article 34 be voted as printed in the warrant,with the exception of the phrase,"or take any other action relating thereto",and with the following changes;in the first sentence change Article VII to Article XIII, and the fifth paragraph change Subsection 172.82.A to Subsection 174-82.A. Planning Board recommend approval unanimously. Motion passes unanimous 7:47p.m. • i ,A TRUE COPY, ATTEST t0 N CLERK OF MAPPEE, MA i