1986-ZBA APPEALS - BLACKBOOK - Laserfiche WebLink

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SUGGESTED MITIGATION 1 . Restrict lawns on lots 6-13 and 22-24 . These lots are in whole or in part within the direct surface watershed of Ashumet Pond. Improperly applied fertilizers would run off into the pond as well as leaching into the groundwater . The average lawn area per house lot is in the 5000 s .f . range . Reducing the allowable lawn size to 2000 s .f.+can reduce the nitrogen loading from this source from - 9 lbs ./year to - 3 . 6 lbs ./year per lot . Further, for lots 6-13, the lawn should be restricted to the front of the house to maximize the distance from the pond edge and thus reduce the potential for fertilizer runoff reaching the pond . For those desiring a grassed area for aesthetic purposes Weeping Love Grass might be a suitable cover . It looks like a dense stand of beach grass but is soft to the touch. It is good for erosion control , is drought resistant, requires no mowing or fertilization. Any of several other ground covers can also provide green areas with low maintenance and no fertilizer requirement after initial installation . Natural shrubby vegetation should be maintained and/or reinforced for erosion control on steep slopes. 2 . Prohibit Garbage Grinders - These devices are the source of many septic system failures. They introduce a large volume of solids into the system. This material does not always have time to properly settle or decompose . Through the increased volume of solids an increased amount of organic pollutants can enter the ground and groundwater . 3 . Require Septic Tank Maintenance Every Second Year - Septic tank maintenance should include pumping by a licensed handler and inspection of tees, baffles and other visible portions for breakage and clogging. Any maintenance of the structure required should be done within 30 days. This type of maintenance removes organic an inorganic polluants within the settled solids of the task thus reducing potential for those pollutants being mobilized and moving into the leaching facility and subsequently into the groundwater . It also reduces the potential for solids entering the leaching facility and clogging it causing malfunction. Pumping the tank on a regular basis will be especially beneficial in ' reducing potential for phosphate contamination.