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f <br /> Product thickness is calculated by subtracting the depth to <br /> product from the depth to water. Iii addition, water <br /> elevations are adjusted for the presence of fuel with the <br /> following calculation: <br /> (Product Thickness) ( •8)+(Water Elevation) <br /> . Corrected Water Elevation <br /> Note The factor of 0.8 accounts for the dens:.ty diffprence <br /> between water and petroleum hydrocarbons. <br /> Newly installed wells will <br /> b <br /> hours after development prior to free product <br /> i 24 <br /> product spection <br /> An acrylic Surface sampler will be used for visual <br /> inspection of the groundwater in order to note sheens <br /> (difficult to detect with the interface Probe) , odors, <br /> microbial <br /> inches and centimeterson and visual inspection of calibrated. The sampler is <br /> inproduct <br /> thickness. <br /> cross <br /> we reducethe moniPorintsawil for <br /> rtake placeincontamination <br /> from between <br /> the <br /> wells, 9 <br /> least to most contaminated, if known. Wells containing free <br /> product will be monitorel blast. Between deeontaminated each well <br /> monitoring the equipment <br /> Water level data collected from the wells will be used to <br /> develop a groundwater contour map for the project site. <br /> Groundwater flow will be estimated to be perpendicular to <br /> equipotential lines drawn on the map. <br /> 10.0 Well Development Protocol <br /> Groundwater monitori.ic wells will be surged deloped <br /> times <br /> prior to setting the surface seal. Approximately 10 <br /> the volume of water in the casing will be withdrawn if <br /> possible. Casing volumes will be calculated in the <br /> following manner: <br /> volume of Schedule 40 PVC Pipe <br /> Diameter I.D. volume <br /> (inches) (inches) Gal/linear ft. <br /> ------------------------------------------ <br /> 4 2.057 0-17 <br /> 4 4.026 0.66 <br />