1975-03-11 Report on Variance - Laserfiche WebLink

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We concurr that water discharged into the holding pond and perculating thru a 14 foot long pervious soil would be of at least as good a quality as runoff from the present lawn area. So as long as the pond would operate efficiently no deterioration of the water reaching the lake would occur as a result of an additional hard cover. However, a pond of this magnitude with a 8 inch thick coarse layer would we think be and impractable and difficult system to maintain in satisfactory operation. It would seem to us that to keep this pervious layer to operating efficiently there would have to be a continually cleaning of the entrance to the filter. This would mean that it would require maintenance to prevent the growth of any grasses, or weeds, it would require frequent cleaning to inslire no deposition of grass clippings, leaves or other debris from building up or causing plugging of the filter layer. It would also seem that in order to function properly a flooding of the ponding area is going to be required and that after a very short period of time the bottom of the filter area would become contaminated or plugged causing water to be ponded in this area for an extended length of time rather than the 1-2 hours suggested in the report a few inches deep but it would be a real deterrent to maintain a yard and a source of breeding for mosquitos and ether unsightly conditions. We also cannot determine -crom the information submitted exactly where this ponding area is proposed but it appears from looking at the site that it would entail a major portion of the balance of the present level land between the house and the lake. If it is to be constructed towards Carmen Road and the house then major difficulties would be encountered with the grading of the site to carry the water into this area and then to getting rid of the water which seeps through the dike.