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Drinking Water Maximum Con~ammant Levels • <br />hup://~ .dhs.ca.gov/ps/ddwem/chemicals/meVmclindes.htm <br />Pentachloronitrobenzene (Terrachlor) 0.0009 <br />Phenol 0.00501 <br />Tertiary butyl alcohol 0.012 <br />1,2,3-Trichloropropane ~ 0.000005 <br />Trithion 0.0070 <br />h Chemical is identified as "unregulated" for purposes of monitoring. <br />' MTBE also has a secondary MCL of 0.005 mg/L. <br />~ Taste and odor threshold. <br />k Taste and odor threshold either for a single isomer or [he sum of the two isomers. <br />~ Taste and odor threshold for chlorinated systems. <br />Return to Top of Page <br />TABLE 5. CALIFORNIA DRINKING WATER <br />UNREGULATED CHEMICALS REQUIRING MONITORING <br />22 CCR §64450 <br />Monitoring is required for chemicals in unregulated category a. If a system is <br />determined [o be vulnerable, monitoring is required for chemicals in <br />unregulated categories b, c, or d. <br />Chemical Unregulated <br />category <br />Inorganic Chemicals <br />r <br />Perchlorate to d <br />Organic Chemicals <br />Aldicarb (Temik) 1° c <br />Aldicarb sulfone c <br />Aldicarb sulfoxide c <br />Aldrin Rt c <br />10 0(13 7/21/99 3:32 PM <br />