ARCHIVED REPORTS_XR0005829 CASE 1

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Mr Michael Infurna Project 20805-151-004 August 25, 2000 Page 4 were not submitted for analysis Approximately 28 cubic yards of soil were removed during the overexcavation activities Stockpile SP-14, generated during the overexcavation activities was sampled as described above Confirmation soil samples were field screened for the presence of petroleum hydrocarbons using a flameionization detector (FID) Samples were sealed in a plastic bag for approximately 15 minutes, which is generally sufficient for volatiles to escape from the soil The total volatile hydrocarbons present were detected by the FID and reported in parts per million on field data sheets The FID was calibrated to a methane 1 standard On May 17, 1999, Pinnacle collected two four-point stockpile samples (SP-15 and SP-16) from material generated during the excavation of product piping trenches Samples were collected as described above On May 20, 1999, Pinnacle collected four confirmation soil samples (VL-1 through VL-4) beneath the former vent lines under the direction of Michael Kith Confirmation soil samples were collected by driving a brass tube into undisturbed soil at the base of the trench Pinnacle also collected one four-point soil stockpile sample (SP-17) from the material generated during excavation of the vent lines The stockpile sample was collected and preserved as described above On June 2, 1999, Pinnacle collected one four-point stockpile sample (SP-18) from material generated during excavation for bollards located at the ends of the pump ' islands The stockpile sample was collected and preserved as described above Confirmation soil samples collected beneath the gasoline USTs were submitted to Columbia Analytical Services (CAS) Inc , of Santa Clara, California, a state certified laboratory Confirmation soil samples collected beneath the dispenser and product delivery lines and vent lines were submitted to Sequoia Analytical (Sequoia), of 1 Sacramento, California, a state certified laboratory The samples were analyzed for total petroleum hydrocarbons as gasoline (TPHG) using U S Environmental Protection Agency (USEPA) Method 8015M, for benzene, toluene, ethylbenzene, and total xylenes (BTEX) using USEPA Method 8020, for oxygenates [tert-butyl alcohol (TBA), methyl tert-butyl ether (MTBE), di-isopropyl ether (DIPS), ethyl tert-butyl ether (ETBE), and tert-amyl methyl ether (TAME)] using USEPA Method 8260, and for total 1 lead using USEPA Method 6010A, as required by the SJCEHD SAC\\\SACRFPI\COMMON\Consulting\data\Shared\Projects\PJO\0805\08051510 4za doe-00\1t 1 (80414100008)