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CONDOR EARTH TECHNOLOGIES,INC. <br /> 1 188 Frank West Circle,Suite I <br /> Stockton,CA 95206 <br /> Phone 209.234.0518 <br /> ® Fax 209.234.0538 <br /> CONDORwww.condorearth.com <br /> September 9, 2013 Condor Project No. 3024J <br /> Stockton Center Site Authority(SCSA) RECEIVED <br /> CSU Contact: Steven Lohr, Chief of Land Use Planning and Environmental Review <br /> CSU Chancellor's Office OCT 10 2013 <br /> 401 Golden Shore,2"a Floor <br /> Long Beach, CA 90802-4210 ENVIRONMENTAL HEALTH <br /> PERMIT/SERVICES <br /> cc: Mr. Steve Breakfield, Stockton Unified School District <br /> Mr.James Barton, California Regional Water Quality Control Board(CRWQCB) <br /> Mr.Harlin Knoll, San Joaquin County Environmental Health Department (SJCEHD) <br /> Mr. Dan Keyser, Grupe Communities,Inc. <br /> Subject: University Park, 1252 North Stanislaus Street, Stockton, California(Site) <br /> Second Quarter 2013 Site Status Update <br /> Dear Mr. Lohr: <br /> The purpose of this letter report is to provide a quarterly status update for the property located at 1252 <br /> North Stanislaus Street in Stockton, California (Figure 1, attached). The San Joaquin County <br /> Environmental Health Department (SJCEHD) recommended that the Site be closed in their June 4, 2013 <br /> Case Closure Summary. The Central Valley Regional Water Quality Control Board concurred with the <br /> SJCEHD's recommendation for closure in their letter dated June 10, 2013. Until all case closure activities <br /> have been completed and the SJCEHD issues a Case Closure Letter, the Site is required to submit <br /> quarterly status updates to the SJCEHD and the CRWQCB. <br /> Site Groundwater Monitoring Summar <br /> Field Activity <br /> Number of monitorin wells: 9 Last monitorin /sam lin date: 12/28/2012 <br /> Site Hydrology <br /> Average depth to groundwater in Average depth to groundwater in deep <br /> shallow monitoringwells:* 31.52 feet monitoring wells:* 31.90 <br /> Approximate flow direction/magnitude for deep monitoring wells: 0.00 16 ft/ft to the northeast <br /> Approximate flow direction for shallow monitoring wells: Northeast <br /> Groundwater Contaminants <br /> Wells containing freeproduct: None Range of constituent concentrations: <br /> Nature of contamination: Gasoline Benzene(µg/L) <0.5-<25(MW-4) <br /> Constituents Toluene(µg/L) <0.5—1,300(MW-4) <br /> Ethyl benzene(µg/L) <0.5—3,200(MW-4) <br /> Total xylenes (µg/L) <1.0—14,000(MW-4) <br /> 1,2-dichloroethane(gg/L) <0.5—5.6(MW-7) <br /> TPH-G /L <50-40,000 MW-4) <br /> Additional Information <br /> *Shallow:MW-1 -MW-6;Deep:MW-7—MW-9. TPH-G=total petroleum hydrocarbons quantified as gasoline t <br /> µg/L=micrograms per liter=parts per billion(ppb) ft/ft=feet per foot <br />