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SHELL OIL COMPANY <br /> Date: December 22, 1989 <br /> Subject: 'Water Sampling <br /> Prepared by: Delta Environmental Consultants, Inc. <br /> Addressee: Shell Oil Company <br /> Summary: These borings were advanced to collect representative groundwater samples. The samples were <br /> obtained through the annulus of the auger using disposable bailers. TPH concentrations registered from nondetect <br /> to 0.16ppm. BTEX concentrations ranged from nondetect to 0.33 ppb toluene. <br /> CURTISS PONTIA C-CADILLA C-GMC, INC. <br /> Date: February 1995 <br /> Subject: Site Contamination Work Plan <br /> Prepared by: Geologic Audit Services, Inc. <br /> Addressee: Curtiss Pontiac-Cadillac-GMC, Inc. <br /> Summary: On July 31, 1991, three USTs and associated dispensers and piping were excavated and removed <br /> from the site. Elevated levels of TPH and BTEX were detected in the soil samples collected from the tank <br /> excavation. TPH and BTEX concentrations in a grab sample reported at 150 ppm, 25 ppm, 43 ppm, 5.7 ppm and <br /> 32 ppm, respectively. Lead was detected in the water sample at a concentration of 0.67 ppm. <br /> Date: August 23, 1989 <br /> Subject: Soil Assessment for Property Acquisition <br /> Prepared by: Delta Environmental Consultants,Inc. <br /> Addressee: Shell Oil Company <br /> Summary:Six exploratory soil borings were completed on the property to evaluate whether soils beneath the site have <br /> been impacted by pesticides/herbicides or petroleum hydrocarbons. Trace levels of DDT(0.02 mg/kg)were identified in <br /> one (composited) surface soil sample collected. Trace levels of BTEX were identified in one of the soil samples <br /> collected. <br /> IN 401107-088-01 <br /> 1hgktuw\97-06jwi\arcoUr c.doc <br /> 54 <br />