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Ms. Linda TurkattA is <br /> August 11, 1995 <br /> Page 2 <br /> ' and xylenes (BTEX) by EPA Methods 5030/8020; and for total petroleum hydrocarbons <br /> (TPH) as gasoline (TPH-G), as diesel (TPH-D), and as oil (TPH-O) by the California <br /> Department of Health Services (DHS) Leaking Underground Fuel Tank (LUFT) Method. <br /> All results were below laboratory method detection limits (Table 1). Copies of the boring <br /> logs showing PID readings and soil types encountered are included in Attachment A. A <br /> ' copy of the laboratory analytical report is included in Attachment B. <br /> Groundwater was encountered in each of the borings at 15 to 16 feet bgs, and rose to <br /> ' about 13 feet bgs in the HydroPunch sampler. A groundwater sample was collected from <br /> each boring and analyzed for BTEX, TPH-G, TPH-D, TPH-O, and for halogenated <br /> volatile organic compounds (HVOCs) using EPA Method 5030A/8010A. Groundwater <br /> ' samples collected from HP-1 and HP-2 contained toluene (12.7 and 79.3 ppb, <br /> respectively), TPH-G (64 and 172 ppb, respectively), and TPH-D (174 and 274 ppb, <br /> respectively; Table 1). A groundwater sample collected from HP-2 also contained TPH-O <br /> ' (368 ppb). The groundwater sample collected from HP-4 contained 715 ppb TPH-D. All <br /> results for HVOCs were below the method detection limits (Table 1). A copy of the <br /> laboratory analytical report is included in Attachment B. <br /> Groundwater generated during the drilling and sampling activities supervised by EMCON <br /> ' will be properly disposed of by a California-registered waste hauler as soon as <br /> arrangements can be made. If you have any questions regarding the information presented <br /> here, please call. <br /> ' Sincerely, <br /> cS�aED GE�� <br /> ' EMC ,1C��., 00 <br /> JAY R. � <br /> JOHNSON <br /> 1 � � <br /> y . oh;aacility <br /> R. G. #5867 s NO.5867 <br /> Director Investigation and Remediation �9TF <br /> ' OF C AOFO <br /> Attachments: Figure 1 Site Plan <br /> t Table I Soil and Groundwater Sample Analytical Results <br /> Attachment A Boring Logs <br /> Attachment B Laboratory Reports <br /> tcc: Tim Johnson, Tosco Northwest Company <br /> Mike Noll, Environmental Management Services, Inc. <br />