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GeofogicafTechnics Inc. <br /> 2741 River Road <br /> Modeato,California 95351 <br /> (209)538-6424lFax#538-5852 <br /> REPORT <br /> Phase IIA Environmental Site Assessment <br /> DeGroot Property <br /> APNs: 198-03-03 & 198-03-04 <br /> Parcels on the West Side of Airport Way <br /> Manteca, California <br /> Project No. 827.2 <br /> November 15, 1999 <br /> EXECUTIVE SUMMARY <br /> Phase I1 Investigation <br /> On October 17, 1999, GTI submitted a work plan and drilling permit application to San <br /> Joaquin County. Mr. Mike Infurna reviewed the plan and approved the permit on November <br /> 3, 1999. <br /> On November 5, 1999, GTI drilled 6 GeoProbe boreholes to the depth of 10 to 20 feet, <br /> collected soil samples at 5-foot intervals, and analyzed one soil sample from each borehole <br /> for petroleum hydrocarbons. No evidence of gasoline or diesel petroleum hydrocarbons was <br /> observed during sample collection or was detected in the soil sample analysis. <br /> On November 2, 1999, GTI collected a water sample from the production well used by <br /> Suprema and tested it for DBCP and EDB by method 504.1 and VOCs by method 524.2. <br /> Test results show that these compounds are not present in the water well. On November 10, <br /> 1999, GTI collected a water sample from the same production well and tested it for Nitrate <br /> by method 300.0. Nitrate was found to be present at 27 mg/L. <br /> 1.0 INTRODUCTION <br /> 1.1 Project History <br /> Phase I ESA Summery <br /> In September 1999, Geological Technics Inc. performed a Phase I ESA at the above <br /> referenced sites. Outlined below are selected observation and recommendations listed in this <br /> report. <br /> APN: 198-03-03 (AKA 13737 S. Airport Way) <br /> 1. 39.54 acres west of Airport Way <br /> 2. This parcel currently contains the following facilities: <br /> • former dairy and an old abandoned dairy barn <br /> • a small mobile home residence <br />