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' 21 <br /> January 1999 <br /> AGE-NC Project No 98-0450 <br /> Page 2 of 8 <br />' CME 75-HT drill rig equipped with continuous flight 8-inch hollow-stem augers The drill rig and <br /> three-man crew were provided by Sails Exploration Services (SES) of Sacramento, California All <br />' soil borings were established with 8-such hollow-stem augers Auger returns (soil cutting) were <br /> placed in plastic sheeting at the northwest corner of the site,treatment or disposal of the stockpiled <br /> sail at a licenced treatment/disposal facility will be determined following laboratory analysis <br />' Soil samples were collected from each boring at five-foot intervals, beginning at various depths <br /> below surface grade (bsg), using a California split tube sampler loaded with three clean 2-inch by <br />' 6-inch brass sleeves A 140-pound hammer was utilized to advance the sampler 18 inches, the <br /> number of blows required to advance the sampler over 6-inch increments was recorded on the boring <br /> logs <br /> Both ends of the soil sleeve of each sample collected for laboratory analysis were covered with <br /> Teflon sheets, capped and sealed with tape The selected soil samples were stored in a chilled <br />' container, transported under chain-of-custody to McCampbell Analytical Inc (MAI), a California <br /> Department of Health Services (DHS) certified laboratory in Pacheco, California and analyzed for <br /> the following <br /> • Total petroleum hydrocarbons quantified as gasoline and diesel (TPH-g and TPH-d) in <br />' accordance with EPA Method 8015m, <br /> • Volatile aromatic compounds (benzene, toluene, ethyl-benzene and total xylenes, BTEX) in <br /> accordance with EPA Method 8020, <br />' • Fuel oxygenates including methyl tertiary butyl ether(MTBE),tertiary butyl alcohol(TBA), <br /> di-isopropyl ether (DIPE), ethyl tertiary butyl ether (ETBE), tertiary amyl methyl ether <br />' (TAME) including ethanol in accordance with EPA Method 8260m <br /> Three soil samples were transported to an independent microbiologist, Mr A Keith Kaufmann of <br /> Culver City, California, and «ere analyzed for physicochemical properties and microbiological <br /> enumeration Data obtained from the microbiological and physicochemical analysis will be used to <br /> determine possible effectiveness of bio-remediation as a remediation alternative <br /> One soil sample from the site was submitted for geotechnical analysis The sample was transported <br />' to Copper Testing Laboratory (CTL) of Mountain View, California and was analyzed for specific <br /> gravity, porosity/permeability and organic content, in accordance with ASTM Methods D854, <br /> D5084 and D2974, respectively <br />' At the request of the PHS-EHD, a grab ground water sample was collected from boringSB2 to <br /> determine if hydrocarbon contamination was present After drilling, ground water was allowed to <br /> Advanced GcoEm iron mental,Inc <br />