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• <br /> .. - - `�'.' .T*�"'. - 1.,.. .y_ c+ro,+.Yg«-)s^,.r:z;.,.rs.m'w apgW��,�p;.�.:'�.-+�cl+.r,..=rn•+-• <br /> O8 <br /> SITE STUDY <br /> St. Mary's North <br /> Orange County North Carolina. <br /> rs�< <br /> The site under study is located off S.R. 1537 .4 miles north of <br /> St. Mary's- Road and contains 7.82 acres. <br /> The proposed use of this site is to develop. it into a subdivision <br /> consisting of six (6) lots with a minimum lot size of 1 .29 acres. <br /> One road is proposed to service this site, Shrewsbury Lane, which <br /> will be constructed as a cul—de—sac. <br /> When designing a site, stormwater runoff from impervious surfaces <br /> must be routed to provide as much natural cleansing as .possible. <br /> Stormwater runoff from impervious surfaces may carry large <br /> amounts of oil, nutrients, metals, and other pollutants. <br /> Generally, it is the first one—half (1/2) inch of runoff that <br /> carries the highest level of pollutants. These pollutants- can <br /> generally be filtered out of the runoff by on—site infiltration <br /> through vegetated areas, retention ponds, or by detention <br /> structures. The natural terrain of this site combined with the <br /> routing of stormwater with swales to the sediment pits and <br /> vegetation will provide a maximum utilization of these natural <br /> processes. <br /> A lower ratio of impervious material to the vegetation of the <br /> site would result in lower pollutants associated with a site. <br /> The low density associated with this site allows it to have a <br /> • relatively small amount of impervious surface. The impervious <br /> surfaces associated_with this site are as follows: <br /> .62.+/— Acres Graveled Road . <br /> .24 +/— Acres Dwellings <br /> 1.0 +/— Acres Impervious Surface <br /> ( .iiZ Impervious Surface) <br /> .gin' <br />