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ADVISORY - ACTIVE SOIL GAS INVESTIGATIONS <br />Generally, the SAP should contain: <br />Sample location and frequency; <br />Pre-sampling activities; <br />Schematic diagram of well design; <br />Schematic diagram of sampling train; <br />Sample equipment and collection procedures; <br />Sample handling and analytical methods; <br />Contaminant analyte list; <br />Chain of custody control and records management; <br />Field instrument and laboratory detection limits; <br />Field and laboratory quality assurance/quality control (QA/QC); and <br />Evaluation of data quality. <br />The SAP should contain a QAPP describing the policy, organization, activities and <br />protocols necessary to achieve the DQ0s dictated by the intended use of the data. The <br />QAPP should include the following applicable information: <br />Project description, management/organization and responsibilities; <br />Quality assurance objectives; <br />Sampling, calibration and analytical procedures; <br />Data acquisition, reduction, validation and reporting; <br />Documentation; <br />Internal quality control; <br />Performance and systems audits; <br />Preventative maintenance; <br />Data assessment procedures; <br />Corrective actions; and <br />Quality assurance reports. <br />2.4 SOIL GAS INVESTIGATION REPORTS <br />A soil gas investigation report should be submitted to the regulating agency at the <br />conclusion of the investigation. Electronic data files should be submitted in accordance <br />with the electronic data format requirements of the oversight agency. <br />Reports should include the following information: <br />Description of field operations (including shut-in testing and leak check <br />compounds, and purge volume data); <br />Analytical methods used; <br />Analytical results; <br />Analysis and revision of the CSM based on data obtained from the soil gas <br />investigation; <br />Deviations from the approved workplan; <br />Data inconsistencies; <br />July 2015 6