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t , <br /> Well Development Protocol <br /> Groundwater monitoring wells will be developed by removing <br /> approximately 10 times the volume of water in the casing or <br /> until relatively free of sand and silt, if possible. Casing <br /> volumes will be calculated in the following manner: <br /> Volume of Schedule 40 PVC Pipe <br /> Diameter I.D. Volume <br /> (inches) (inches) Gal/linear ft. <br /> ------------------------------------------ <br /> 2 2.067 0.17 <br /> 4 4.026 0.66 <br /> Volume of Open Borehole and' Annular Space <br /> Between Casing and Hole <br /> Volume/ Volume/ <br /> Hole linear ft. Nominal linear ft. of* <br /> Diameter of hole Casing Diameter Annular Space <br /> (inches) Gal. Cu. ft. (inches) Gal. Cu. Ft. <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 /> *Note: Annular volumes will be multiplied by 30% to account for <br /> porosity of filter pack. <br /> If the aquifer is slow to recharge, development will continue <br /> until recharge is too slow to practically continue. The <br /> volume of water produced versus time will be recorded. <br />