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Tracy Tire Fire Groundwater Analvtical Results Samples Collected on August 14. 1998 and March 12, 1999 TDD: 09-9808-0005 PAN: 0339-TTRZ-XX Sample ID EPA Method 524.2 EPA Method 6010B EPA Method 604 EPA Method 525.2 Benzene Ethyl Naphthalent Arsenic Beryllium Cadmium Chromium Lead Zinc Penta- Phenol Acenaph- Anthracene Benzo(a) Benzo(a) Chr},sene Phenanthrene Pyrene benzene chlorophenol thylene pyrene fluoranthene EPA PRG 0.39 1.300 6.2 0.045 73 18 1806 4 11.000 0.56 22,000 None None 0.0092 0.092 9.2 None 180 California MCL 1 700 None 50 4 5 50 15 (500) 1 None None None 0.2 None None None None (SMCL) Units ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L u&L ug/L ue/L PWM Gravel' ND ND ND ND ND ND ND ND ND ND ND ND 5.5 5.7 ND ND ND NE ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Teichert ND ND ND ND ND ND ND ND ND ND ND ND 5.7 5.5 ND ND ND NE ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Field B1an1: ND ND INTI) ND ND ND NA NAI NA NA NA NA NA NA NA NA NA NA ND NA ND NA ND NA ND NA ND NA ND NA ND NA ND NA ND NA RMC Lonestar NDI ND ND ND I ND ND ND ND ND ND ND ND ND ND 7.6 ND ND NE ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 30010 S. ND ND ND ND ND ND ND ND ND ND ND ND 5.7 5.2 ND ND ND N ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Macarthur 8952 Palmquist NA ND NA ND NA ND INA ND NA ND NAD NA 10.7 NA ND NA 50 NA ND NA ND NA ND NA ND NA ND NA ND NA ND NA ND NA ND ug/L=micrograms per liter NA=Not Analyzed PRG=Preliminary Remediation Goal SMCL=Secondan MCL ND=Not Detected J=Detected below the quantitation limit MCL=Maximum Contaminant Level Notes: 1. Shaded compounds are those chemicals listed in Rings of Fire.California Office of State Fire Marshall.that are commonly identified toxins associated with tire fires. 2. Additional compounds were analyzed for by EPA Methods 524.2.525.2_and 604;however.they are not reported in this table because they were not detected and not typically found at tire fires. 3. The trihalomethanes bromo-dichloromethane,chloroform.and dibromo-chloromethane were detected in the field blank during the Phase I event. The occurrence of these constituents was attributed to the use of chlorinated.bottled water as the sample source. 4. Phase I1 results are currently beine validated. 5. Duplicate sample,named"PWM Gravel."was collected from the Teichert Gravel Co.well during Phase I event;the RMC L.onestar Gravel Co.for second event. 6. Chromium'6 1:\000610ZF388 0339TTRZXX\Tracy_Table.wpd 30JuI1999: 07:55