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Volume of Open Borehole and Annular Space <br /> Between Casing and Hole <br /> Volume/ Volume/ <br /> linear ft. Nominal linear ft. of* <br /> Hole of hole Casing Diameter Annular Space <br /> Diameter (inch") Gal. Cu. Ft- <br /> (Inches) <br /> Gal. c--ft--------------------------------------- <br /> 7.25 <br /> 2.14 0.29 2 1.91 0.26 <br /> 8.25 <br /> 2.78 0.37 2 2.55 0.34 <br /> 10.25 <br /> 4.29 0.57 2 4.06 0.54 <br /> 10.25 <br /> 4.29 0.57 4 3.46 0.46 <br /> 12.25 <br /> 6.13 0.82 4 5.30 0.71 <br /> *Note: <br /> Annular <br /> porosity fes willer be multiplied by 304 to account for <br /> If the aquifer is slow to recharge, development w" <br /> continue <br /> until <br /> watarroduced versus time will bee is too slow to l - . <br /> recorded. <br /> The volume of <br /> All withdrawn groundwater will be stored on-site in 55 <br /> gallon waste drums unless permission is granted by the <br /> 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 in the and <br /> the Project Geologist/Engineer.. <br /> determined of borings at each site will <br /> Prior to arriving at the sample site, the drill rig/augers <br /> will be steam cleaned and all sample equipme-nt will be <br /> cleaned. Cleaning will be conducted on-sits on all sampling <br /> equipment between each sample interval. <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 />