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_ 04 December 1995 <br /> AGE-NC Project No. 95-0183 <br /> Page 2 of 4 <br /> 3.0 PROCEDURES <br /> 3.1. SCOPE OF WORK <br /> _ Since no permit was secured for the tank removal, the PHS-EHD required a subsurface investigation <br /> at the eleventh tee area to evaluate whether or not the excavated soil was impacted by hydrocarbon. <br /> The scope of work was to comply with the requirement of the PHS-EHD. <br /> 3.2. DRILLING AND SAMPLING <br /> On 9 October 1995, eight soil borings (B 1 through 138) were advanced to depths of approximately <br /> 13 feet bsg at the site. Each boring was drilled using a truck-mounted drill rig equipped with 8-inch <br /> diameter hollow stem augers. Boring locations are illustrated on Figure 2. Cuttings and rinseate <br /> generated during drilling activities were containerized in properly labeled D.O.T. model 17H 55- <br /> gallon drums, and stored on-site in an area inaccessible to the general public. <br /> Each boring was sampled continuously beginning at a depth of 5 feet bsg utilizing a five-foot sampling <br /> core assembly. Upon sample retrieval, the core was removed from the assembly, and inspected by <br /> representatives of AGE and the PHS-EHD. After inspection of each five-foot sample core, the PHS- <br /> EHD directed an AGE representative to collect soil samples at selected intervals. <br /> Soil samples were preserved in brass sleeves by covering both ends of the sleeve with Teflon tape, <br /> capped and sealed with tape. Each sample was labeled with the following: boring location, depth, <br /> time, and sampler's initials. The samples were immediately stored under ice in a chilled container and <br /> transported to McCampbell Analytical, Inc. (MAI), a California State-certified laboratory . Each <br /> sample was analyzed for total petroleum hydrocarbons quantified as gasoline (TPH-g), volatile <br /> aromatics (benzene, toluene, ethyl benzene and xylene: BTE&X) and total lead in accordance with <br /> EPA methods 5030, 602, and 6010, respectively. <br /> 3.3. EQUIPMENT DECONTAMINATION <br /> All sampling tools and brass sleeves used for sample collection were thoroughly rinsed with clean <br /> water after washing with a solution of Alconox. All hollow stem augers were steam-cleaned prior to <br /> advancement in each borehole. <br /> 3.4. LOGGING <br /> Soil was continuously monitored for the presence of organic vapors using a photo-ionization detector <br />