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Y <br /> . 21 December 1998 <br /> AGE-NC Project No 96-0254 <br /> Page 2 of 2 <br /> TPH-d, respectively) by EPA Method 8015 Modified, volatile aromatic compounds <br /> (benzene, toluene, ethylbenzene and total xylenes BTEX) by EPA Method 8020 and <br /> oxygenated fuel additives, di-isopropyl ether (DIPS), ethyl tertiary butyl ether (ETBE), <br /> methyl tertiary-butyl ether (MTBE), tertiary amyl methyl ether (TAME) tertiary butyl <br /> alcohol(TBA)by EPA Method 8260 Modified Selected soil samples will be analyzed,with <br /> concurrence from the PHS-EHD <br /> • Selected soil samples may also be analyzed for intrinsic permeability, moisture content and <br /> porosity in accordance with the appropriate EPA or ASTM methods Additionally two soil <br /> samples will be analyzed for physicochemical and bio-enumeration by an independent <br /> microbiologist,to determine natural-biodegradation of the hydrocarbon-impacted soils at the <br /> site <br /> • AGE recommends the installation of all soil bonngs using continuous core sampling, with <br /> one of the soil borings established north of the former UST to be advanced to a depth of 35 <br /> feet below surface grade(bsg) A grab water sample soil be collected from a depth of 35 feet <br /> to delineate the vertical impact to ground water at the site <br /> Upon approval of the work plan,AGE will schedule field work 48 hours in advance of any sampling <br /> at the site <br /> If you have any question or require further information,please contact our office at(209)467-1006 <br /> Sincerely, <br /> Advanced GeoEnvironmental, Inc. <br /> W , <br /> William Little <br /> Staff Geologist <br /> cc Mr Joe Toste Jr <br />