Laserfiche WebLink
water flow direction The measurements will be correlated with tidal <br /> data to evaluate tidal influence on ground water elevations Water <br /> level measurements will be obtained before and after sampling The <br /> water levels will be obtained using the wetted tape method <br />' Water Sampling <br />' Wells MW-1A through MW-5A will be sampled using a pre-cleaned <br /> Teflon® bailer Water samples will be placed in containers provided by <br /> the laboratory Water samples will be labeled with a unique sample <br /> number, the project name and location, the date and time, and the <br /> sampler's initials. Samples will then be placed in Zap-Lock® type <br />' plastic bags, sealed, and placed in an aced cooler Information noted on <br /> the label will be recorded on a chain-of-custody form After completion <br /> of drilling, the samples will be delivered under chain-of-custody to a <br />' DTSC-certified laboratory. <br /> Analysis <br /> If headspace measurements show no elevated readings of the PID, a <br /> minimum of two soil samples from each soil boring and the <br /> monitoring well will be submitted to the analytical laboratory for <br />' analysis If elevated PID readings are encountered, additional samples <br /> will be analyzed Soil and ground water samples will be analyzed for <br /> the following constituents, <br />' Total Petroleum Hydrocarbons as Gasoline (EPA Method 8015- <br /> Modified), <br /> tTotal Petroleum Hydrocarbons as Diesel (EPA Method 8015- <br /> Modified), and <br />' Benzene, Toluene, Ethyl benzene, and Xylenes (EPA Method <br /> 8020), <br />' For QA/QC purposes, field blanks and trap blanks will be analyzed for <br /> BTEX (EPA 8015-Modified) Duplicate ground water samples will also <br />' be obtained an analyzed for the constituents described above <br /> Additional analyses will be performed to obtain information so that <br /> remedial alternatives may be evaluated These analyses are described <br /> below <br />' 2-4 <br />