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Table 1 <br />Ladd's Marina <br />Stockton, California <br />Sandblast Debris Testing <br />Sample Designation <br />Ladd's 1 <br />Ladd's 1 <br />Ladd's 1 <br />Regulatory Criteria <br />Sampling Date <br />05/12/03 <br />05/12/03 <br />05/12/03 <br />TTLC <br />20x TCLP Industrial PRG <br />Sample Type <br />Debris <br />Debris <br />Debris <br />Metals mg/kg <br />Arsenic <br /><5 <br /><5 <br /><5 <br />500 <br />100 <br />1.6 <br />Barium <br />247 <br />131 <br />118 <br />10,000 <br />2,000 <br />67,000 <br />Beryllium <br /><25 <br /><25 <br />0.54 <br />75 <br />1,900 <br />Cadmium <br /><0.5 <br /><0.5 <br /><0.5 <br />100 <br />20 <br />7.4 <br />Chromium <br />16.3 <br />26.7 <br />28.9 <br />2,500 <br />100 <br />450 <br />Cobalt <br />3.68 <br />4.41 <br />7.03 <br />8,000 <br />1,900 <br />Copper <br />4,670 <br />10,200 <br />1,510 <br />2,500 <br />41,000 <br />Lead <br />89.3 <br />93 <br />25.2 <br />1,000 <br />100 <br />750 <br />Molybdenum <br /><5 <br /><5 <br /><5 <br />3,500 <br />5,100 <br />Nickel <br />9 <br />14.4 <br />23.2 <br />2,000 <br />20,000 <br />Selenium <br /><7.5 <br /><7.5 <br /><7.5 <br />100 <br />20 <br />5,100 <br />Thallium <br /><10 <br /><10 <br /><10 <br />700 <br />67 <br />Vanadium <br />5.33 <br />4.99 <br />39.2 <br />2,400 <br />7,200 <br />Zinc <br />144 <br />229 <br />151 <br />5,000 <br />100,000 <br />TTLC = Total Threshold Limit Concentration <br />Samples collected by Leo <br />Valdez of DTSC <br />TCLP = Toxicity Characteristic Leaching Procedure <br />Bold = Exceeds a Regulatory Criteria <br />PRG = EPA Region 9 Preliminary Remediation Goals <br />Ladd's Debris Testing[I] 12/24/03 <br />