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LLW, Aaiap,ax Tech chajassr-ou argil 're;';ele >w;,,a„ <br /> Laborumry Program. These otisite w analytical laboratories m a California <br /> Department of Health Services EBBS)trEnvtimmnenml Iaborntary Accreditation Program <br /> codification for analytical tests for which the DHS offers certification. <br /> Upon reasipt, Be analytical data and associated QC data were managed by LLNL Dale <br /> Management personnel and the results and QC were validated by the LLNL QC Chemist in <br /> accordance with LLNL data management-relat 1 SOPs. <br /> 3.5. Quality Assurance/Quality Control <br /> Quality ass anagement system for ensuring that all infm ratiun, data, and <br /> decisions am technically sound and properly documented. "rhe Quality Assurance Fondest Plan <br /> and Standard Operating Procedures (Goodrich and froxim 2012) were followed during the <br /> characterization at the Eastern GSA Debris Burial Trenches including: <br /> • Sampling and decontamination. <br /> • Sample custody. <br /> • Calibration procedures and frequency. <br /> • Analytical procedures. <br /> • Data reduction, validation, and reposing. <br /> • Internal quality control chinks. <br /> • Frequency, pertbmmnce, and system audits. <br /> • Specific routine procedures used to assess data precision, awu sey, and completeness. <br /> Quality control (QC) samples were collected and identified fa accordance with SOP 4.9 <br /> 'Collection of Field QC Samples." Field samples used to assess QC far this work included: <br /> • CNkcated (Bnplleme) gxlggbs. One duplicate sample was mlloved per each to normal <br /> .samples. Three QC duplicate son samples were analyzed for SVOCa/PAHs utilizing <br /> EPA Method 8270: semivolatile organic compounds by GC — MS. Three QC duplicate <br /> samples were analyzed for PCBs utilizing EPA Method 8082C: PCBs by G(:. Soil <br /> sample analyses for SVOCa/PAH.% and PCBs were performed by Curtis and Tompkins <br /> Laboratories. er-labunmry QC soil samples come submitted to BC Laboratories t <br /> analyse. The locations (borehole and sampling depth) whore file duplicate soil samples <br /> wers callech i are provided in Table I . The analytical results for the duplicate samples <br /> fr SVOCs/PAHx and PCBs in subsurface soil are provided in Tables 3 and 4, <br /> respectively. <br /> • Although the work plan specified [hat four duplicate samples would he collected, the <br /> ampler inadvertently mended down (10% of 35 samples — 35QC samples) to collect <br /> three QA/QC samples rather than mending up to four QC samples. However, an <br /> additional three soil sample extracts were split by the labomtmy and analyzed far QC <br /> purposes. There are no implications to the data given that: (1) no SVOCs or PAIN were <br /> declared in any of the coil samples above the analytical methal reporting limits, and (2) <br /> while PCBs were delivered at concentrations above analytical RLs in four tumble soil <br /> samples and two QC duplicate samples ranging boom 0.01 to B037 mgskg, the PCB <br /> concentrations re below EPA industrial and residential and RSLs and We MCI based <br /> Protection of(.round Water SSL in all soil samples in all borcholes. <br /> 14 <br />