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29 January 2002 AGE-NC Project No. 98-0466 Page 19 of 25 ' concentrations were at or near background levels and do not exceed any environmental guidlines. No other analytes of concern were detected above laboratory reporting limits. ' 4.2.2. Former South Steam Cleaning Area ' One soil sample collected from soil boring PB3 advanced near the formc r south steam cleaning area was submitted for analysis as noted above. TPH-g, TPH-d and TPH-rr o were not detected above ' laboratory reporting limits. Chromium, lead and zinc were detected at concentrations of 56 mg/kg, 7.7 mg/kg and 70 mg/kg, respectively. The detected concentrations were at background levels and do not exceed any environmental guidelines. ' 4.2.3. Ray Bond Area- "Penta Tank" and Wash-Down Area ' One soil sample collectd from soil boring PB4 was submitted to MAI f or analysis as noted above. Formaldehyde was detected at 3.2 mg/kg. SVOCs and phenols werc not detected at or above laboratory reporting limit concentrations. ' 4.2.4. West Ditch Area Two soil samples collected from soil boring PB5 and one soil sample from PB6 were submitted to MAI for analysis as noted above. TPH-d and TPH-mo were detectedconcentrations as high as 3.3 mg/kg and 33 mg/kg,respectively, in sample PB5-10. TPH-g and S OCs were not detected in either sample collected from boring PB5.The pH of soil sample PB5-5 was reported at 7.95 by MAI. ' TPH-g, TPH-d, TPH-mo and SVOCs were not detected in the sample yzed from boring PB6. Formaldehyde was detected in soil samples collected at 5 feet bsg ir. borings PB5 and PB6 at concentrations of 4.3 mg/kg and 6.8 mg/kg, respectively. Chromium as detected in PB5-5 and PB6-5 at concentrations of 43 mg/kg and 42 mg/kg, respectively. Lead was detected at 8.0 mg/kg and 5.7 mg/kg and zinc was detected at 64 mg/kg and 65 mg/kg, respectively. The metals ' concentrations in soil appear to be at or near background levels, and do not exceed any environmental guidelines. ' 4.2.5. Former Cover Plant Wash-Down Area and Former Teepee Stru tune ' One soil sample collected from soil boring PB9 was submitted to MAI f or analysis as noted above. TPH-g,TPH-d,TPH-mo,VOCs and SVOCs were not detected in the samples analyzed. Chromium, • lead and zinc were detected at concentrations of 5lmg/kg, 12 mg/kg and 68 mg/kg,respectively. The ' reported metals concentrations appear to be at or near background levels. None of the detected Advanced GeaEnvironmenW4 Inc.