This entry combines three proposed rulemakings (RIN 2040-AF71, 2040-AF72, 2040-AF73) into this action. On May 18, 2000, EPA promulgated a final rule known as the California Toxics Rule, or CTR, that established numeric water quality criteria for priority toxic pollutants for certain waters in the State of California. California now has adopted criteria for lead, dichlorobromomethane, and chlorodibromomethane for purposes of the Clean Water Act. And, EPA approved the State’s criteria because EPA determined that the State’s criteria were scientifically sound and protective of the designated uses of these waters. Recently, EPA has determined that certain of the federally promulgated criteria for these parameters are no longer needed for certain waters in California. On December 11, 2017 (82 FR 58156), EPA proposed to amend the Federal regulations to withdraw the following water quality criteria: a) certain aquatic life criteria for lead applicable to California's Los Angeles River and its tributaries; b) certain human health (water & organism) criteria for dichlorobromomethane applicable to a segment of New Alamo Creek and a segment of Ulatis Creek in California; and, c) certain human health (water & organism) criteria for chlorodibromomethane applicable to a segment of New Alamo Creek and a segment of Ulatis Creek in California. The withdrawal of the federally promulgated criteria will enable California to implement its EPA-approved water quality criteria for these parameters in certain waters in California as the applicable Clean Water Act water quality standards.