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l v x+ <br /> stainless steel hand auger to at least 20 vertical inches below the <br /> floor of the pits. At this point the two inch diameter stainless <br /> steel sample driver was inserted to the bottom of the augered hole <br /> and a driven sample collected. The size difference between the two <br /> devices minimized cross contamination during sampling. All <br /> sampling was done without entering the pit by using extensions of <br /> the augering and sampling devices. <br /> Samples S1, S2, and S8 were collected from soil stockpiles. <br /> Samples S1 and S8 consisted of a composite of three individual <br /> brass tubes of soil which were later combined in the laboratory for <br /> analysis. To collect these composite samples, four to six inches <br /> of soil was removed from the three locations on the stockpile and <br /> a brass tube, already sealed at one end, was driven into and filled <br /> with soil Sample S2 was collected by first removing approximately <br /> six inches of earth from the surface, then driving in and filling <br /> a brass tube (already sealed at one end) with soil. <br /> After a soil sample had been collected, each brass tube of <br /> relatively undisturbed soil was sealed with teflon lined plastic <br /> end caps which were then secured with stretchable plastic tape. <br /> The water sample was collected after purging the well for 145 <br /> rFr°4 minutes. The purge rate of the well could not be determined due to <br /> E all piping being underground. water was collected from a sample <br /> port directly into the appropriate sample container and immediately <br /> scaled with teflon lined caps. All samples were labeled with <br /> stick-on labels filled out in indelible ink, with the following <br /> information: <br /> Site name <br /> )' Date collected <br /> Time collected <br /> Sample I.D. <br /> Sampler's initials <br /> Analysis required <br /> Each sample was sealed in ziplock baggies and placed with ice in an <br /> insulated chest for delivery with a Chain-of-Custody document to <br /> the WESTON Analytics' laboratory in Stockton, California. This <br /> laboratory is certified by the State of California to perform the <br /> required analyses. Samples were submitted for analysis as <br /> summarized in Table A-1. <br /> All devices used to collect the drive samples (including the auger, <br /> drive sampler, and stainless steel knife) were decontaminated prior <br /> to first use and between uses for each sampling. These items were <br /> decontaminated--by---washing---them An---an al conox-water--mixture--with <br /> -T--stiff bristle brushes, rinsing with potable water, . and spray <br /> rinsing with distilled water. <br /> All on-site work was performed in accord with WESTON's site <br /> specific health and safety plan. At no time did site personnel <br /> f enter either of the pits. Sampling of the walls and floor of. the <br /> Parte ti <br /> is <br />