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. Product thickness is calculated by subtracting the depth to <br /> product from the depth to water. In additJon, 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 /> M <br /> Note: The factor of 0-8 accounts for the density differenr.e <br /> between water and petroleum hydrocarbons. <br /> Newly installed wells will be allowed to stabilize for 24 <br /> hours after development prior to free product inspection. <br /> An acrylic Surface Sampler will be used for visual <br /> inspection of the groundwater in ordar to note sheens <br /> (difficult to detect with the Interface Probe), odors, <br /> microbial action and sediments. The sampler is calibrated <br /> In inches and centimeters for visual inspection of product <br /> thickness. <br /> F <br /> To reduce the potential for cross ccntamination between <br /> wells, the monitorings will take place in order from the <br /> least to most contaminated, if known. Wells containing free <br /> proauct will be monitored last. Between each well <br /> monitoring the equipment will be decontaminated. <br /> 4 <br /> Water level data collected from the walls will be used to <br /> `° '• develop a groundwater contour may for the project site. <br /> Groundwater flow will be estimated to be perpendicular to <br /> equipotantial lines drawn on the map. <br /> 10.0 Well Development Protocol <br /> Groundwater monitoring wells will be surged and developed <br /> P prior to vatting the surface seal. Approximately 10 times <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 the volume of water in the casing will be withdrawn if 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 /> Y(inches)ww___(inches)__w�__Gal/linear_ft. <br /> 2 2.067 0.17 <br /> 4 4.026 0.66 <br />