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been adopted by DHS for use in California; Note: These values are denved to conjunction unth technologic and economic factors and are, therefore,not purely health-based Rate "Action Levels" published by the Sanitary Engineering Branch of DHS10; +Recommended Maximum Contaminant Levels (RMCLs)17 promulgated by the U S EPA under the National Primary Drinking Water Regulations as the first step in establishing MCLS; Note- By lazy,these are purely health based values,and are set at",zero" for caranogens •Qualily Criteria for Water, 1986 ("Gold Book")12 and the Ambient Water Quality Criteria volumesZ3 (1980)published by EPA for the priority pollutants which contain No-Adverse- Effect Levels for non-carcinogens, 10-6 incremental cancer risk estimates for carcinogens, and other toxicity based criteria; •QuMiW Criteria for Water ("Red Book)16 published by EPA in 1976 [superseded by Qgalily Criteria for Water, 1986 ("Gold Book")12 and the Ambient Water Quality Criteria volumes13 for the priority pollutants]; •Water ality Criteria 1972 ("Blue Book")17 published by EPA in 1973 [superseded by QualiiX Criteria for Wafer ("Red Book")16]; • "Health Effects Advisories" published by the U S EPA, Office of Drinking Water1'which include Suggested No Adverse Response Levels (SNARLS) for non-carcinogens and 10-6 incremental cancer risk estimates for carcinogens; • Drinking Water and Health volumes 1,3,4,5,6, and 715 published by the National Academy of Sciences which include Suggested No-Adverse-Response Levels or SNARLs [values are presented for some carcinogens which do not include consideration of the cancer risk posed by those chemicals] and 10-6 incremental cancer risk estimates; •Proposition 65 No-Significant-Risk Levels (NSRLs)established by the Health and Welfare Agency in CCR Title 22 for known human carcinogens and reproductive toxins which may be converted into concentrations in water; r •Estimated Permissible Ambient Goals3'published by EPA in 1977 as informal criteria; Note: Thaw are estimated from occupational exposure to airborne pollutants and are,therefore, not very reliable. They should only be used 1f no other criteria are available. Human Welfare e Secondary MCLS (Drinking Water Standards) in Title 22 of CCR,Division 4,Chapter 15, "Domestic Water Quality and Monitoring" 9 which have been adopted by DHS; State"Action Levels" published by the Sanitary Engineering Branch of DHS10 which contain taste and odor thresholds for some chemicals; Page 26 Designated Level Methodology