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VA <br />Page 23 of 24 <br />Contingent analyses <br />• Organic lead required if TTLC lead >— 13 mg/kg <br />• Aquatic bioassay required if any TPH (gasoline, diesel, or motor oil) > 5,000 mg/kg <br />• TCLP benzene required ifbenzene > I mg/kg <br />• TCLP and STLC required for metals <br />per table below <br />Trigger level <br />Metal <br />TTLC <br />Requirement <br />(m ) <br />Antimony <br />--�— <br />150 <br />STLC re aired if TTLC > 150 m <br />4nenic <br />50/100 <br />STLC required if TTLC > 50 mg/kg; <br />STLC and TCLP <br />re uired if TTLC > 100 m <br />Ban <br />-- _ <br />1,000/2,000 <br />STLC required if TTLC > 11000 mg/kg; <br />STLC and TCLP <br />Beryllium <br />--� <br />�•5 <br />re aired if TTLC > 2,000 ml <br />— <br />STLC aired if TTLC > 7.5 mg/kg <br />Cadmium <br />10/20 <br />STLC required if TTLC > 10 mg/kg; <br />--- —___. <br />: <br />STLC and TCLP re uired if TTLC > 20 m <br />Chromium <br />50/100 <br />STLC required if TTLC > 50 mg/kg; <br />STLC and TCLP re uired if TTLC > 100 <br />Cobalt <br />r —_ <br />Co <br />800 <br />m <br />STLC re uired if TTLC:> 800 m <br />e--- <br />250 <br />STLC re aired if TTLC > 250 m <br />Lead <br />50/100 <br />STLC required if TTLC > 50 mg/kg; <br />STLC and TCLP r aired if TTLC > 100 m <br />Mercury_ <br />2/4 <br />STLC required if TTLC >2 mg/kg; <br />350 <br />STLC and TCLP re aired if TTLC > 4 mg/kg <br />rMolybdenum <br />Nicke-1 <br />STLC r uired if TTLC > <br />_ 350 meg <br />200 <br />STLC r uired > if TTLC 200 m g <br />Selenium <br />10/20 <br />STLC required if TTLC > 10 mg/kg; <br />STLC and TCLP required if TTLC > 20 m <br />Silver <br />STLC required if TTLC > 50 mg/kg; <br />r----_ <br />Thallium_ <br />50/100 <br />STLC and TCLP re uired if TTLC > 100 mg/kg <br />— <br />70 <br />qn .0 rennirua :FTTi n •tri --- - <br />VA <br />Page 23 of 24 <br />