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• <br /> 4 Soil borings #1 , 2, 3, & 4, (refer to RLATE VI , ) will be <br /> taken as close to the capillary fringe as possible in order to <br /> obtain a soil sample If field evidence warrants, a water sample <br /> may be taken by use of a hydropunch or similar type device. <br /> After sampling, each soil boring will be grouted from bottom to <br /> the surface with a bentonite/cement slurry as directed by a <br /> representative of the County EHD <br /> 5 Monitoring wells #1 , 2, & 3 will be advanced in the same <br /> manner as the soil borings; samples taken every 5 ' from 5' bgl to <br /> the capillary fringe After verifying water depth, each soil <br /> boring will be advanced a minimum of 10 feet below the water <br /> table <br /> 6. Upon reaching the desired depth, 2" blank & slotted, flush <br /> screw--thread PVC casing, fitted with a threaded bottom cap, will <br /> be run in the hole When bottom is reached, the casing will be <br /> pulled up slightly to avoid the possibility of buckling or laying <br /> against the side of the hole The annular space between casing <br /> and augers will be filled with clean, graded, #2 1/2 or #3 sand <br /> The casing will be constantly vibrated during sand placement to <br /> eliminate bridging and voids. Fill depths will be monitored <br /> constantly as the auger flights are slowly withdrawn. When sand <br /> fill has stabilized, (a minimum of 2' above the top of the <br /> slots, ) a bentonite seal will be placed, and the annular space <br /> filled to the surface with a cement/bentonite slurry Refer to <br /> PLATE. VII for a schematic of each well completion. <br /> 7 Each well will be fitted with a precast Christy-type box, <br /> with the casing extending into the box far enough to allow <br /> placement of a locking cover The casing & box will be <br /> thoroughly grouted into place to ensure the integrity of the <br /> seal. <br /> 8. Within 18-24 hours after completion, each well will be <br /> developed by use of a hard rubber cup or other suitable device <br /> Purge fluids will be placed in suitably marked sealed containers <br /> & stored on location pending results of the laboratory analyzes <br /> 9 Preserved soil samples will be transported under chain of <br /> custody to a State Certified laboratory with instructions to <br /> analyze for BTEX (EPA 8020, ) & TPH-G (EPA 8015M, ) using current <br /> County approved detection limits. <br /> 9. As soon as practical after development, each well will be <br /> purged, water levels determined, and samples taken per standard <br /> WJH field protocol; a copy of which is attached as EXHIBIT D <br /> The properly preserved water samples will be transported under <br /> 5 <br />