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Figure 6 <br /> DEPARTMENT OF HEALTH SERVICES CRITERIA �! <br /> FOR ORGANIC CONSTITUENTS OF HAZARDOUS WASTES <br /> THRESHOLD LIMIT <br /> CONCENTRATION <br /> SOLUBLE TOTAL <br /> (STLC) (TTLC) <br /> mgll In wet w#. <br /> ' SUBSTANCE extract_ —mg/kg <br /> Aldrin 0.14 1.4 <br /> Chlordane 0.25 2.5 <br /> DDT, DDE, DDD 0.1 1.0 <br /> 294-Dichlorophenoxyacetic Acid (2,4-D) 10 100 <br /> i Dieldrin 0.8 8.0 <br /> Dioxin (2,3,7,8-TCDD) 0.001 0.01 <br /> Endrin 0.02 0.2 <br /> Heptachlor 0.47 4.7 <br /> Kepone 2.1 21 <br /> Lead Compounds, Organic — 13 <br /> Lindane 0.4 4.0 <br /> Methoxychlor 10 100 <br /> Mltex 2.1 21 <br /> Pentachlorophenol 1.7 17 <br /> Polychlorinated Biphenyls (PCBs) 5.0 50 <br /> --- — Toxaphene - <br /> - - T- —Trichloroethylene-(TCL) 2,040 --- - -- - <br /> 2,4,5-Trichlorophenoxyproplonic Acid 1.0 10 <br /> "2) hazardous waste which has been granted a variance from hazardous waste <br /> management requirements pursuant to Section 66310 of Title 22 of this code." <br /> i The granting of variances for hazardous wastes was discussed in Section 1.2 above. <br /> However, a waste also becomes 'designated' is if it is nct 'hazardous' but still poses a threat <br /> to water quality at the site of disposal. An example will clarify this point. <br /> Figure 7 shows a situation in which a liquid waste containing 4.5 mg/1 of arsenic is - <br /> L discharged to an unlined surface impoundment over ground water that may be used for <br /> domestic supply. The hazardous STLC for arsenic is 5 mg/1, so the waste is not <br /> 'hazardous' under Title 22 The drinking water standard for arsenic is 0.05 mg/l. Ground MR <br /> water above that level could cause adverse health effects if consumed over a prolonged <br /> Designated Level Methodology Page 15 <br />