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Agenda - 04-07-1986
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Agenda - 04-07-1986
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10/10/2016 12:23:55 PM
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BOCC
Date
4/7/1986
Meeting Type
Regular Meeting
Document Type
Agenda
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08--7 <br /> Site Study <br /> Burnside Park <br /> Hillborough, North Carolina <br /> The site under study is located at the end of Burnside Drive (a <br /> gravel road east of the Court House) and North and East of the Eno <br /> River. The property covers 24.99 acres +-. <br /> The proposed use of this site is to develop it into a 3 lot <br /> subdivision with a minimum lot size of 1.95 acres. One road is <br /> proposed to service this site, (Burnside Drive) which will be <br /> extended as a cul-de-sac. <br /> A site designed within a water supply watershed of regional <br /> importance must allow stormwater runoff from impervious surfaces, <br /> to follow routes that provide as such natural cleansing as <br /> possible before it is discharged into a stream. stormwater <br /> runoff from impervious surfaces often carry significant amounts of <br /> oil, nutrients, metals and other pollutants. It is generally the <br /> first one-half (1/2) inch of runoff that'carries the greatest <br /> concentration of pollutants. These pollutants can generally be <br /> filtered out of the runoff by on-site infiltration through <br /> vegetated areas, retention ponds and detention structures. The <br /> natural terrain of the site combined with the natural vegetation <br /> and a stilling basin used as a detention structure will provide <br /> maximum natural cleansing of the stormwater runoff. A low ratio <br /> of impervioUa material to vegetation on a site should result in a <br /> Lesser amount of pollutants associated with a site. The low <br /> density of this site results in a small amount of impervious <br /> surface. These surfaces are as follows: <br /> 0.28 +1- Acres Gravel Road <br /> 0.48 +1- Acres Driveways (1760' X 12") <br /> (Existing and Projected Driveway) <br /> 0.21 +1- Acres Dwellings (3,000 SF Avg.) <br /> 0.97 +1- Acres Impervious Surface <br /> This site contains 24.99 Acres, therefore 3.9x of the site will be <br /> impervious. This falls well below the allowable 30x. <br /> In addition to the low impervious material to vegetation ratio it <br /> should be noted that the land within the floodway of the Eno River <br /> is almost flat and supports dense vegetation. This combination of <br /> near flat grade and dense vegetation cause the stormwater runoff <br /> to have a lob/ velocity which aids the. sedimentation of pollutants <br /> from the stormwater. This also allows substantial infiltration <br /> and filtering of the stormwater. <br /> 1 <br />
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