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- 1 <br /> May 3 , 1990 <br /> Page 5 <br /> Pond . Although test borings were trot included in the scope <br /> of services for this. site assessment , local geologic features <br /> indicate that subsurface deposits probably consist of sand <br /> and gravel derived from glacial sediments typical of Cape <br /> Cod . Subsurface areas adjacent to Little River may contain <br /> II swamp and marsh deposits derived from river and estuary <br /> lI sediments . <br /> The site sloped gently to the southeast indicating that <br /> stormwater runoff drains across the property directly into <br /> i <br /> Little River . A significant portion of stormwater probably <br /> infiltrates into the ground due to the pervious nature of the <br /> i <br /> boat yard . Stormwater runoff from the boat storage rack was <br /> directed to an array of dry wells at the base of the roof <br /> leaders . A single catchbasin was located near a parking area <br /> adjacent to the river which collected stormwater runoff and <br /> infiltrated it into a leaching basin directly under the storm <br /> grate . <br /> Although groundwater under the site probably flows in a <br /> c.i direction similar to the surface topography , it is likely <br /> that it is also influenced by tital fluctuations and <br /> extensive pumping from the two potable water supply wells <br /> which service the subject property . Slightly elevated levels <br /> l <br /> of salt in the supply wells confirm that the aforementioned <br /> i hydraulic influences may be occurring at this site . <br />