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Reference Library of Water Quality Criteria

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  Title EPA Number
(if assigned)
Policy Appropriate Water Quality Criterion for Dissolved Oxygen for the Main Stem of the Ohio River (November 19, 1981)  
Policy Compliance with CWA Section 303(c)(2)(B) (PDF) (3 pp, 342 K) June 19, 1989  
Technical Estuarine and Coastal Marine Waters: Bioassessment and Biocriteria Guidance (December 2000) EPA-822-B-00-024
Policy Memorandum: Establishing Site Specific Aquatic Life Criteria Equal to Natural Background (PDF) (3 pp, 124 K) (November 5, 1997)  
Policy Memorandum to Water Management Division Directors, Region I-X re. Implementation of Metals Criteria (April 1, 1993)  
Policy Memorandum to Water Management Division Directors, Environmental Services Division Directors, Regions I-X, re. Office of Water Policy and Technical Guidance on Interpretation and Implementation of Aquatic Life Metals Criteria (PDF) (49 pp, 3 MB) (October 1, 1993) 822/F-93-009
Technical Research and Development Drinking Water and Criteria Documents for Manganese (September, 1993)