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" Work Plan <br /> r1 Frontier Transportation <br /> 1099-166 <br /> October 27, 1999 <br /> toxics analysis laboratory using EPA methods 8015 modified, 8020, and 8260. <br /> 1 6.4) Analytical Methods and Quality Assurance <br /> 1 A California Department of Health Services certified laboratory would conduct all <br /> chemical analysis of site samples. The chosen laboratory will maintain strict conformance to EPA <br /> standard methodologies, quality assurance/quality control (QA/QC) protocols and standard <br /> !_I laboratory practices supporting EPA procedures. <br /> 6.5) Schedule <br /> Following acceptance of the work plan by the PHS/EHD, on site test activities will <br /> commence within thirty days. <br /> `-S 7.0) 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 /> l 7. 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 be <br /> maintained by the field team to provide a daily record of significant events, observations, and <br /> deviations from the work plan and measurements collected during the field activities. The BEH on <br /> i Site Supervisors will determine the necessity for any deviations from the work plan. The records <br /> will contain sufficient information so that the work activities can be reconstructed without relying <br /> on the collector's memory. All entries will be signed, dated and made with waterproof ink. <br /> Corrections to the logbook will be made by drawing one line through the error, initialing and <br /> dating. The logbook will always be stored in a secure location. <br /> f 7.2) Chain-of-Custody <br /> The objective of the Chain-of-Custody Program is to allow the tracking of <br /> possession and handling of individual samples from the time of field collection through laboratory <br /> analysis. Once a sample is collected, it becomes part of the Chain-of-Custody process. A sample <br /> j l is "in custody" when ( 1 ) it is in someone's possession; (2) it is within visual proximity of that <br /> - person; (3) it is in that persons possession, but locked up and sealed (e. g. during transport); and <br /> (4) it is in a designated secure sample storage area. <br /> J <br /> � j <br />