2018-09-17-CONCOM-min - Laserfiche WebLink

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Mr.Hamilton entered the engineering report into the record. Mr.Bitsko asked if the O&M plan for the subsurface recharge system complies with the Commission's standard conditions.Ms.Mullins confirmed that they do comply. Mr.Bitsko additionally asked if there will be a filter fabric on the bottom of the recharge system.Mr.Bitsko clarified that the Commission asks for the filter fabric to be solely on the top and sides of the recharge system,not on the bottom.Mr.Zoltan quickly agreed to comply with that request to remove the bottom layer of filter fabric from the design details. Mr.Wolk asked to clarify the amount of cultech units,suggesting to add more.Mr.Zoltan stated that yes,2 additional Cultech units were added as recommended by Engineering.Mr. Wolk asked again if increasing the total 10 Caltech units would be potentially beneficial for future homeowners to alert them if the system is failing.Mr.Zoltan clarified that increasing Cultec units would not be additionally beneficial. Mr.Wolk raised his concern regarding pervious paver systems and the upkeep that homeowners must endure to confirm that these systems work.Mr.Zoltan continued to confirm that perhaps when a system reached a certain age that homeowners may be required to test their systems.Mr.Zoltan pointed out that nothing is foolproof. Mr.Bitsko added that for porous asphalt there is a test for porosity that you can do upon installation and again at any interval.Any test required by order or bylaw would need to be consistent.At the DPW the porous asphalt system was designed with a fail-system(designed to fail by using bio-retention basins as back up controls)but with most residential projects there is no room to fail. Ms.Mullins brought to the Commissioners attention that the design calls for a down-gradient overflow outlet that would trickle out onto abutting property at a down gradient projection. Standard conditions require overflow at each downspout.This conflicts with the existing standard condition of the Commission.Mr.Zoltan stated he can meet this requirement via removal of the overflow outlet as designed and install overflows at each downspout. On a motion by Mr.Wolk and seconded by Ms.Dohan,the Commission voted in favor 4-0 to close the hearing. On a motion made by Mr.Wolk and seconded by Ms.Dohan,the Commission voted to adjourn the meeting at 8:55 pm. Respectfully Submitted by Katie Luczai,Department Assistant based on notes from Jordan McCarron,Stewardship Coordinator and LexMedia On Demand Video