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. I Stockton 99 Speedway Quality Assurance Project Plan April 12,2007 9.0 DATA MANAGEMENT, DATA REVIEW, AND REPORTING This section presents the plan for data management, data review; and data reporting relevant to the data produced during all project analytical activities. Proper data management and data review insure that the data are correct, readily available, and of the quality necessary to support the decisions required for the project. i 9.1 Field Data Data measured by field instruments will be recorded in field notebooks, portable computers, and/or on required field forms. Units of measure for field analyses are identified on the field forms. The field data will be reviewed by SGI's Project Manager to evaluate completeness of the field records and appropriateness of the field methods employed. All field records will be retained in the project files. A copy of completed field data forms will be completed as an appendix in the PEA Report. 9.2 Laboratory Data Analytical data will contain the necessary sample results and quality control data to evaluate the.DQOs defined for the project. Documentation requirements for laboratory data are defined in USEPA Region 9 Draft Laboratory Documentation Requirements.for Data Validation (USEPA 1997).. For all samples analyzed by the laboratory, the laboratory reports will, at a minimum, be consistent with USEPA Level II documentation and include the following data and summary forms: • Narrative, cross-reference, chain of custody, and method references; • Analytical results; • Surrogate recoveries (as applicable); . E • Blank results; • Laboratory control sample recoveries; • Duplicate sample results or duplicate spike recoveries; and • Sample spike recoveries. 9.3 Procedures for Data Validation Data validation guidelines for this project are derived from EPA's Guidance on Environmental Data Verification and Data Validation (USEPA, 2002a). Should the review of analytical data indicate exceedances in the data quality criteria set forth in Section 3, results may be qualified according to the guidelines provided in EPA's Functional Guidelines for Organic Data Review (USEPA, 1999) or in EPA's °uality 5 _�4ack_Plan.Firk,.doc - The Source Group,Inc.