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9. REFERENCES <br /> Code of Federal Regulations (CFR), 29CFR1910.120, Hazardous waste operations and <br /> emergency response. <br /> United States Environmental Protection Agency (USEPA), 2001 a. EPA Requirements <br /> for Quality Assurance Project Plans, EPA/240/13-01/003, EPA QA/R-5. March. <br /> United States Environmental Protection Agency (USEPA 2006). Guidance on <br /> Systematic Planning Using the Data Quality Objectives Process (EPA QA/G-4), <br /> EPA/240/13-06/001, February. <br /> USEPA, 2001b. Region 9 Superfund Data Evaluation/Validation Guidance EPA <br /> R9QA/006.1. December. <br /> USEPA, 2020. National Functional Guidelines for Inorganic Superfund Methods Data <br /> Review, EPA 542-R-20-006. November. <br /> USEPA, 2020. National Functional Guidelines for Organic Superfund Methods Data <br /> Review, EPA 540-R-20-005. November. <br /> Appendix C 20 <br />