Sealcoating
Sealcoating makes already asphalted surfaces which can be partially permeable, completely impervious. Along Assembly Point Road sealcoated driveways slope toward the lake and allow toxic run off to enter the water.
Storm water retrofits....During this storm event on a steeply sloped sealcoated driveway you can see how the diverter redirects rainwater into the rain garden at the left. Very little run off reaches the bottom of the drive; without such retrofitting impervious sealcoated surfaces prevent the ground's ability to infiltrate on the property.
In spring 2015 The Assembly Point Water Quality Coalition published a paper (see file below) about the effects of sealcoating on driveways.
Several Coalition members walked the Point in April and May and noted which driveways were seal coated, which were asphalt, which stamped impervious and which were gravel, stone or natural.
The APWQC created a small 10x10" "No More Sealcoating" yard sign.
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ALTERNATIVES to SEALCOATING
Assembly Point Road
New permeable driveway
Another Retrofit Project...
When an asphalt driveway has come with the house, or a permeable paver driveway is not an option, there are alternatives. The Carbognins at 197 Assembly Point Road wanted to stem the runoff from their asphalt driveway, which was causing erosion at their lakefront. By slicing a portion of the drive on the incline and inserting a drain, they were able to divert runoff into perforated pipes surrounded by crushed stone buried in their front lawn. At the same time, they were able to connect the downspouts from the roof of the house to this system - hence controlling much of the runoff.
