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D.2.1.1. Field Data Package <br /> The field data, including all field records and measurements obtained at the sampling site by <br /> the sampling personnel will be reviewed for completeness and accuracy by conducting the <br /> following. <br /> • A review of field data on water sampling logs for completeness. <br /> • If applicable, verification that sample rinsate blanks and trip blanks were properly prepared, <br /> identified, and analyzed. <br /> • Check on field analyses for equipment calibration and condition. <br /> • Review of chain-of-custody forms for proper completion, signatures of field personnel and <br /> the laboratory sample custodian, and dates. <br /> Equipment blanks should be collected if equipment is field cleaned and re-used on-site or if <br /> necessary to document that low-level contaminants were not introduced by pumps, bailers or <br /> other sampling equipment <br /> D.2.1.2. Analytical Data Package <br /> The analytical data package will be validated by the project CIA officer or designee. The <br /> validation steps will be performed by applying, where applicable, the USEPA Contract <br /> Laboratory Program National Functional Guidelines for Organic and Inorganic Data Review, and <br /> EPA Precision and Accuracy statements for the analytical methods employed or other <br /> appropriate and approved guidelines. The analytical data package validation procedure <br /> includes, but is not limited to, review of the items as outlined. <br /> D.2.1.3. Data Validation Procedures <br /> • Comparison of sampling, sample extraction, and analysis dates to check that samples were <br /> extracted and/or analyzed within the proper holding times. <br /> • Review analytical methods and required detection limits to verify that they agree with the <br /> ClAPP and the laboratory contract. <br /> • Review field and laboratory blanks to evaluate possible contamination sources. The <br /> preparation techniques and frequencies, and the analytical results (if appropriate) will be <br /> considered. <br /> • Evaluation of all blanks (equipment rinsate blanks, field blanks, reagent blanks, method <br /> blanks, and extraction blanks) to confirm that contaminants were not detected at the <br /> specified detection limits. <br /> Daub &Associates, Inc. Page D-3 Natural Soda LLC 2022 SAP <br />