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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 Approximately 10 times the volume of water in the casing will be withdrawn if possible.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 /> _ _ _ _. .......................... ..... _ ........ ................... ................. <br /> VOLUME:OF SCHEDULE.40 PVC PIPE <br /> Dtameer(orches) I D (:orches) Vo.fume <br /> Galllinear feet <br /> 2 2.067 0.17 <br /> 4 4.026 0.66 <br /> 170LUME OF .OPENBOREHOLE:AND ANNULAR SPACE BET . ..... _..._ ._. ........ <br /> ....... ... ......_.. _ _ . ......... ... ...... ....... ............ _ <br /> ..........__ ......... .........-_ ... ...... ........... ........ ... _ _ . ........... .......... .......................... ........... ........... <br /> .......... _............. .. .. .... ............... .... _. ......... .................. _ .. .. ....... <br /> Hole: VolumelLtnear Feet of Hoe Nominal VolumelLmear Feet of <br /> Otameter Casing Annular Space'. <br /> ,(inches) Diameter <br /> (inches.) <br /> . . <br /> ... <br /> Gallons ..:; Cubic Feet <br /> Gallons Cubic Feet <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 15.30 1 0.71 <br /> Annular volumes will be multiplied by 30%to account for porosity of finer 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 All withdrawn groundwater will be stored on-site in 55-gallon waste drums unless permission is 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 sanitary <br /> W:Wdmin\Shells\QAQC-98.DOC <br />