Data Review, Validation & Verification Requirements Clause Samples

Data Review, Validation & Verification Requirements. Analytical results will be reviewed and validated in accordance with EPA documents, including the USEPA Guidance on Environmental Data Verification and Validation (EPA QA/G-8), 2002b; the USEPA Contract Laboratory Program National Functional Guidelines for Organic Data Review (EPA 540/R-94/012), 1999; and the USEPA Contract Laboratory Program National Functional Guidelines for Inorganic Data Review (EPA 540/R-94/013), 1994b. Tetra Tech will conduct data review and validation using the following methods on 10% of the primary project samples, including their associated quality control duplicates and laboratory quality control samples.  A review of sample handling and analytical and field data for completeness, accuracy, holding time compliance, and quality control (QC) sample frequency compliance.  Evaluation of laboratory blank samples.  Evaluation of the accuracy and precision of field duplicate samples, laboratory control samples (LCS), and matrix spike/spike duplicate (MS/MSD) samples.  Assignment of data qualifiers, when necessary, to reflect limitations identified in the data assessment process.  Estimation of completeness.