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<br /> <br /> 13 <br />Table B: Groundwater Quality Objectives for Groundwater Basins <br />Constituent Concentration <br />Arsenic Waters with MUN beneficial use designation: shall not exceed 0.05 mg/L as a result of <br />controllable water quality factors. <br />Bacteria, Coliform Waters with MUN beneficial use designation: total coliform numbers shall not exceed <br />2.2 organism/100 mL median over any seven-day period as a result of controllable water <br />quality factors. <br />Barium Waters with MUN beneficial use designation: shall not exceed 1.0 mg/L as a result of <br />controllable water quality factors. <br />Boron Shall not exceed 0.75 mg/L as a result of controllable water quality factors. <br />Chloride Waters with MUN beneficial use designation: shall not exceed 500 mg/L as a result of <br />controllable factors. <br />Color Waste discharges shall not result in coloration of the receiving waters that causes a nuisance <br />or adversely affects beneficial uses. <br />Cyanide Waters with MUN beneficial use designation: shall not exceed 0.2 mg/L as a result of <br />controllable water quality factors. <br />Fluoride Waters with MUN beneficial use designation: shall not exceed 1.0 mg/L as a result of <br />controllable water quality factors. <br />Hardness Waters with MUN beneficial use designation: shall not be increased as a result of waste <br />discharges to levels that adversely affect beneficial uses. <br />Metals Waters with MUN beneficial use designation: shall not exceed the following: Cadmium 0.01 <br />mg/L; Chromium 0.05 mg/L; Cobalt 0.2 mg/L; Copper 1.0 mg/L; Iron 0.3 mg/L; Lead 0.05 <br />mg/L; Manganese 0.05 mg/L; Mercury 0.002 mg/L; Selenium 0.01 mg/L; and Silver 0.05 mg/L, <br />as a result of controllable water quality factors. <br />Methylene blue- <br />activated substances <br />Waters with MUN beneficial use designation: shall not exceed 0.05 mg/L as a result of <br />controllable water quality factors. <br />Oil and grease Waste discharges shall not result in deposition of oil, grease, wax, or other materials in <br />concentrations that cause a nuisance or adversely affect beneficial uses. <br />pH Shall not be raised above 9 or depressed below 6 as a result of controllable water quality <br />factors. <br />Radioactivity Waters with MUN beneficial use designation: shall not exceed the California Code of <br />Regulations, Title 22, standards of 5 pCi/L for combined radium-226 and radium-228, 15 pCi/L <br />for gross alpha particle activity, 20,000 pCi/L for tritium, 8 pCi/L for strontium-90, 50 pCi/L for <br />gross beta particle activity, and 20 pCi/L for uranium. <br />Sodium Waters with AGR beneficial use designation: shall not exceed a sodium absorption rate of 9. <br />Waters with MUN beneficial use designation: shall not exceed 180 mg/L as a result of <br />controllable water quality factors. <br />Sulfate Waters with MUN beneficial use designation: shall not exceed 500 mg/L as a result of <br />controllable water quality factors. <br />Taste and odor Shall not contain taste- or odor-producing substances in concentrations that adversely affect <br />beneficial uses. <br />Toxic substances All waters shall be maintained free of substances in concentrations that are toxic or that <br />produce detrimental physiological responses in human, plant, animal, or aquatic life. <br />Source: Water Quality Control Plan for the Santa Ana River Basin (Santa Ana RWQCB 1995, last updated February 2016). <br />AGR = Agricultural Supply <br />MUN = Municipal Supply <br />mg/L = milligrams per liter <br />mL = milliliter <br />pCi/L = picocuries per liter <br />pH = percentage of hydrogen <br /> <br />