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STATE OF_CALIFORNIA-HEALTH_AND_WELFARE AGENCY_ PETE WILSON Governor <br /> DEPARTMENT OF HEALTH SERVICES �} <br /> OFFICE OF DRINKING WATER APR 2 C IS92 <br /> 31 EAST CHANNEL STREET,ROOM 270 _NV I RQN M ENTAL HEALTH <br /> STOCKTON,CA 95202 PERM IT/:;LkViCL <br /> (209)948-7697 <br /> Mr. David Wang, P.E. <br /> Department of Toxic Substances Control <br /> 10151 Croydon Way, Suite 3 <br /> Sacramento, Ca 95827-2106 <br /> ARAR'S FOR DEFENSE DISTRIBUTION REGION WEST, TRACY SITE <br /> In response to your letter of April 8, 1992 , the applicable, <br /> relevant and appropriate requirements of the Office of Drinking <br /> Water with respect to ground water contamination are enclosed for <br /> your use. The ARARs are in the Title 22 of the California Code <br /> of Regulations, Chapter 15, California Domestic Water Quality and <br /> Monitoring Regulations. The applicable drinking water standards <br /> are listed in Article 3 through Article 8 of Chapter 15. A copy <br /> of Articles 3 through Article 8 is enclosed with this letter for <br /> your use. <br /> The bacteriological standards and Maximum Contaminant Level (MCL) <br /> begin on page 93 of the regulations. The general mineral, <br /> general physical and inorganic chemical standards and MCLS begin <br /> on page 97, and the radiological standards and MCLs begin on page <br /> 100. The organic chemical standards and MCLs begin on page 102 <br /> of the regulations. Secondary drinking water standards are <br /> listed in a section beginning on page 116. <br /> Your letter indicated that trichloroethylene (TCE) and <br /> tetrachloroethylene (PCE) are the primary contaminants of concern <br /> at the Tracy Depot site. Since TCE is a regulated organic <br /> chemical, its maximum contaminant level of 0. 005 mg/l is in the <br /> table of organic chemical MCLs on page 103 of the regulations. <br /> Similarly, PCE is regulated, and its MCL of 0. 0. 005 mg/l is also <br /> tabulated on page 103 . <br /> If your have any further questions regarding the Tracy Depot site <br /> or the drinking water standards, contact Joe Spano at 209-948- <br /> 3816 (ATSS: 8-423-3816) . <br /> 1 <br /> A. L. Ellsworth, P.E. , Chief <br /> Northern California Section <br /> Office of Drinking Water <br /> Enclosure <br /> cc: County Health Department <br /> C: \39\702\TOX-ARAR.LTR <br />