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A <br /> Frontier Transportation, Inc. <br /> 425 Larch Road <br /> Site Assessment Work Plan <br /> !, May 6, 2005 ' <br /> Page 5 <br /> Ir_ j all chemical analysis of site samples. The chosen laboratory will maintain strict conformance to <br /> EPA standard methodologies, quality assurance/quality control (QA/QC) protocols and standard <br /> j laboratory practices supporting EPA procedures. <br /> i <br /> 5.3) 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 Underground Storage Tank <br /> (UST) Fund. <br /> 6.0) 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 /> 6.1) 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 /> deviations from the work plan and measurements collected during the field activities. The BEA <br /> J 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 /> waterproof ink. Corrections to the logbook will be made by drawing one line through the error, <br /> initialing and dating. The logbook will always be stored in a secure location. <br /> 6.2) Chain-of-Custody <br /> - The objective of the Chain-of-Custody Program is to allow the tracking of possession and <br /> handling of individual samples from the time of field collection through laboratory analysis. <br /> Once a sample is collected, it becomes part of the Chain-of-Custody process. A sample is "in <br /> custody" when ( 1 ) it is in someone's possession; (2) it is within visual proximity of that person; <br /> (3) it is in that persons possession, but locked up and sealed (e.g. during transport); and (4) it is in <br /> a designated secure sample storage area. <br /> i <br />