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L <br /> L October 26,2004 <br /> NOA Project Number: E5106A <br /> 3.0 PAST AND CURRENT SOURCES OF CONTAMINATION <br /> 3.1 Research Methods <br /> NOA employs a standard practice for review of database information. On a street map showing the <br /> location of the subject property,a circle is drawn one-quarter mile out from the property boundaries, <br /> and street maps or web-based mapping services are then used to determine address ranges for all streets <br /> within the quarter mile. All agency databases searchable by address are then searched for these address <br /> L ranges. <br /> 3.1.1 Regional Water Quality Control Board <br /> Our office reviewed the Spills,Leaks,Investigations,and Cleanups(SLIC)list(April 2004) on file with the <br /> Central Valley Regional Water Quality Control Board(CVRWQCB)in an attempt to determine if there <br /> Lare any files present at that agency which note the unauthorized release of a toxic or hazardous agent <br /> into the environment on the subject property or within a one-quarter mile radius of the subject property. <br /> The subject property was not listed,and no addresses within one-quarter mile of the subject property <br /> Lwere found on the databases. <br /> Our office reviewed the Leaking Underground Storage Tanks(LUST)list(July 2004)and the WaterPurveyors <br /> L Quarterly Report on MTBE Quly 2004),both maintained by the CVRWQCB as well. The subject property <br /> was not listed, but the following site was identified within a one-quarter mile radius of the subject <br /> property: <br /> L Sierra-Bay Federal Land Bank 11273 Ada Ave. <br /> LThis case is closed and involved a leak to soil only. <br /> AL2 San Joaquin County Environmental Health Depamrnent <br /> LAccording to Ms. Kimberly Campbell of the San Joaquin County Environmental Health Department <br /> (EHD),no files were available for the subject property address of 11573 Norman Avenue' <br /> The Underground Storage Tank Site Mitigation List,dated June 24,2004,and the LOP/Non-LOP Sites list, <br /> dated July 20,2004,were reviewed at the EHD on September 23,2004. The following sites were found <br /> within one-quarter mile of the subject property: <br /> 'Personal communication, September 21,2005. <br /> 4 <br /> 5 <br /> L .444 <br /> V <br />