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d � <br /> Work Plan <br /> Frontier Transportation <br /> r May 31, 2001 <br /> annular seal, a large-diameter flush-mount protective casing will be installed around the well <br /> ffhead. The casing will be firmly seated in concrete and supplied with lockable covers for security. <br /> l <br /> 7. 1) Soil Sampling <br /> i Soil samples will be collected at least at 5 ' intervals in each boring and at depths <br /> where visual or photoionization (PID) inspection indicates contamination. All samples will be <br /> collected in a split spoon sampler lined with 2-inch by 6-inch brass tubes. The bottom brass tube <br /> will be immediately sealed with Teflon tape, capped, and packaged in a cooler with ice. The <br /> second brass tube will be field screened using a PID to detect volatile organic compounds and <br /> used to classify soil sediments. Only those soil samples which detect petroleum hydrocarbon <br /> vapors using a PID or visual inspection will be analyzed for TPH-g, BTEX, and MTBE at a <br /> California certified toxics analysis laboratory using EPA methods 8015 modified, 8020, and <br /> 8260. <br /> 7.2) Analytical Methods and Quality Assurance <br /> h <br /> A California Department of Health Services certified laboratory would conduct <br /> all chemical analysis of site samples. The chosen laboratory will maintain strict conformance to <br /> WO�,-, EPA standard methodologies, quality assurance/quality control (QA/QC) protocols and standard <br /> N laboratory practices supporting EPA procedures. <br /> ( I 7.3) Schedule <br /> Following acceptance of the work plan by the PHS/EHD, on site test activities <br /> will commence within sixty days of project cost approval by the UST Fund. <br /> k ! 8.0) FIELD DOCUMENTATION AND CHAIN-OF-CUSTODY <br /> The following sections describe the recording system for documenting all site field <br /> activities and the sample Chain-of-Custody Program, <br /> 8. 1) Field Log Book <br /> An accurate chronological recording of all field activities is vital to the documentation of <br /> any environmental investigation. To accomplish this, bound and numbered field logbooks will <br /> be maintained by the field team to provide a daily record of significant events, observations, and <br /> U deviations from the work plan and measurements collected during the field activities. The BEII <br /> on Site Supervisors will determine the necessity for any deviations from the work plan. The <br /> records will contain sufficient information so that the work activities can be reconstructed <br /> without relying on the collector's memory . All entries will be signed, dated and made with <br /> ik, <br /> �F <br /> 4 <br />