Laserfiche WebLink
A <br /> *..�ironmental Restoration Services <br /> y Sampling location and number; Project name; Date and time samples were collected; <br /> Treatment (preservatives, filtered, etc.); Name of sampler. <br /> Subsequent to collection, the samples were immediately be stored on ice in an appropriate <br /> ice chest. Samples were transferred under Chain-of-Custody procedures to Sparger <br /> L, Technology Inc. of Sacramento. <br /> 2.2.2 Laboratory Analyses <br /> At the lab, the soil samples were composited two to one, for a total of six tested <br /> samples. <br /> The following analyses were performed on soil samples obtained from the stockpile: <br /> LN <br /> TPH-diesel (EPA Method 8015M); BTEX (EPA Method 8020) <br /> The analytical results of the soil samples are as follows: <br /> Results in Parts Per Million (PPM) <br /> LA Sample# TPH/d Benzene Toluene Ethl/Benzene Xylene <br /> STKPL-(1-2) 10 ND ND ND ND <br /> STKPL-(3-4) 6.5 ND ND ND ND <br /> i� STKPL-(5-6) 26 ND ND ND ND <br /> STKPL-(7-8) 17 ND ND ND ND <br /> STKPL-(9-10) 73 ND ND ND ND <br /> L- STKPL-(11-12) 21 ND ND ND ND <br /> L. <br /> Chain-of-Custody and laboratory results are contained in the appendix <br /> Ld <br /> 3.0 CONCLUSIONS <br /> It appears from the excavation soil stockpile sample results that all of the BTEX and <br /> most of the Total Petroleum Hydrocarbons as diesel ( average concentration is 25 parts <br />,r per million and weathered) have biodegraded over an approximate 18 month period. <br />