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volume of Open Borehole and ;anular Space <br /> Between Casing and dole <br /> Volume, volume/ <br /> Hole linear :t. *tominal linear ft. of* <br /> Diameter of `tole Casing Diameter Annular Space <br /> ( incnes ) 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 3.30 0.71 <br /> *Note: Annular volumes gill be multiplied oy 30% to account for <br /> porosit-_- of filter pack. <br /> k <br /> If the aquifer is slow to recharge, development will <br /> continue until recharge as too slow to practically continue. <br /> The volume of water produced versus time will be recorded. <br /> All withdrawn groundwater will be stored on-site an 55 <br /> gallon waste drums unless permission is granted by the <br /> d' appropriate regulatory agency to discharge the water to the <br /> ground surface or sanitary sewer. Drummed water will be <br /> labeled with the source of the water to help ensure <br /> appropriate disposal based on contamination levels. <br /> 1 x <br /> 11 .0 Soil Sampling Protocol <br /> 11. 1 Sample Collection During Drilling Activities <br /> A proposal will be submitted to the lead Regulatory <br /> Authority with proposed boring/sampling locations. The <br /> exact location and number of borings at each site will be <br /> determined in the field by the Project Geologist/Engineer. <br /> Prior to arriving at the sample site, the drill rig/augers <br /> will be steam cleaned and all sample equipment will be <br /> cleaned. Cleaning will be conducted on-site on, all sampling <br /> equipment between each san.ple interval. <br /> 1 <br /> Soil samples will be obtained using a California modified <br /> split-spoon sampler containing three, six inch long, two <br /> inch diameter brass tubes. The sampler will be driven 18 <br /> inches ahead of the hollow stem auger by a 140 pound hammer <br /> with a 30 inch drop in accordance with American Society for <br /> i <br />