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• Volume of Open Borehole a.-4 Annular Space <br /> Between Casing and Hole <br /> ,^ Volume/ %"Jiume/ <br /> Hole linear ft. Nominal linear ft. cif* <br /> Diameter of hole Casing Diameter Annulax Space <br /> (inches) Gal. Cu. ft. (inches) Gel. Cu. Ft. <br /> 7.25 2.14 0.29 2 1 .91 0.20 <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 O A 2 S 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 <br /> continue until recharge is 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 All withdrawn groundwater will be stored on-site in 55 <br /> gallon waste drums unless permission is granted by the <br /> q 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 /> 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 /> E , 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 sample interval. <br /> � ► Soil samples will be obtained using a California modified <br /> split-spoon sampler contriving three, six inch lo-1, two <br /> inch diameter brass t•.bes. aha sampler will be dri,ren 18 <br /> finches ahead of the hollow stem auger by a 140 pound hammer <br /> with a 30 inch drop in accor, ance with American 5ociet- for <br /> I � <br />