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rDoesimpoundment <br /> TE THIS PAGE ONLY IF IMPOUNDMENT IS SUBJECT TO TPCA <br /> . store PCB (> 50 mg/1 ) or free cyanides (> 1,000 mg/1 )? <br /> ❑ YES ❑ NO <br /> If yes, storage should have ceased before January 1, 1985, unless granted <br /> an exemption for discharge of mining wastes containing PCB's or cyanides <br /> by Regional Board. <br /> 2. Does impoundment store liquid hazardous wastes having any of the following <br /> properties or constituents? [As (> 500 mg/1 ) , Cd (> 100 mg/1 ) , <br /> Cr VI (> 500 mg/1 ) , Pb(> 500 mg/1 ), Hg (> 20 mg/1 ) ,Ni (> 134 mg/l ) , <br /> Se (> 100 mg/1 ) , Tl (> T30 mg/1 ) , wastes having a pH < 2, halogenated organic <br /> compounds (> 1,000 mg7kg) , or other restricted hazardous waste as designated <br /> by Department of Health Services (DHS)]? <br /> ❑ YES ❑ NO <br /> If yes , storage should have ceased before January 1, 1986, unless granted an <br /> exemption for discharge of mining wastes or fossil fuel power plant boiler <br /> wastes by Regional Board or unless granted a•variance by DHS. <br /> 3. Is impoundment within 1/2 mile upgradient of a potential source of drinking <br /> water? <br /> ❑ YES ❑ NO <br /> If yes , exemption is required from Regional Board to operate after <br /> June 30, 1988. <br /> 4. Is impoundment double lined and equipped with a leachate collection and ground <br /> water monitoring system? <br /> ❑ YES ❑ NO <br /> If no , must be retrofitted or receive an exemption from Regional Board <br /> or must cease operation after January 1 , 1989. <br /> -2- <br />