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ATC Associates Inc. <br /> Quality Assurance/Quality Control Plan <br /> Revised March 1998 <br /> 10.0 WELL DEVELOPMENT PROTOCOL <br /> Groundwater monitoring wells will be surged and developed prior to setting the surface seal. <br /> Approximately 10 times the volume of water in the casing will be withdrawn if possible. Casing <br /> volumes will be calculated in the following manner: <br /> VOLUME OF SCHEDULE 40 PYG PIPE <br /> N..E77 77 <br /> Diameter <br /> .......finches).. V,b urn... <br /> .............. ....... <br /> ............. <br /> ... . ....... <br /> 2 2.067 0.17 <br /> 4 4.026 0.66 <br /> VOLUME M OF OPEN, <br /> BOREHOLDiametetE <br /> Hate Diameter Yo[ume/Ctnear Feet of Hole Nominal VglumelLinear Feet of€ <br /> iincbesl Castnq Annular Space` <br /> .. ........ <br /> ......... <br /> xx <br /> ........... <br /> eet <br /> . ......... <br /> 7.25 2.14 0.29 2 1.91 0.26 <br /> 8.25 2.78 0.37 2 2.55 0.34 <br /> 10.25 4.29 0.57 2 4.06 0.54 <br /> 10.25 4.29 0.57 4 3.46 0.46 <br /> 12.25 6.13 0.82 4 5.30 0.71 <br /> Annular volumes will be multiplied by 30%to account for porosity of filter pack. <br /> If the aquifer is slow to recharge, development will continue until recharge is too slow to practically <br /> continue. The volume of water produced versus time will be recorded. <br /> All withdrawn groundwater will be stored on-site in 55-gallon waste drums unless permission is <br /> granted by the appropriate regulatory agency to discharge the water to the ground surface or <br /> W:\Admin\Shells\QAQC-98.DOC <br /> 9 <br />