Laserfiche WebLink
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 <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 All withdrawn groundwater will be stored on-site in 55 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 /> 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 /> 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 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 /> 1 <br />