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� e <br /> Thiemann Service S1atioTi" - 2 - October 23, 2011 t <br /> • Soil Types: he Site is underlain by interbedded and intermixed sand, silt and clay <br /> Monitoring Welllnfarmation <br /> Well Designatior, Date Installed Screen Interval Depth to Water <br /> (feet bgs) (feet bgs) <br /> (Apr 2011 <br /> MW-1 Aug93 ?-40 27.86 <br /> MW-2 Aug93 ?-41 27.75 <br /> MW-3 Aug93 ?-40 27.42 <br /> LAMA 96 2-39 27.43 <br /> MW-5 Aug96 ?-40 27.21 <br /> MW-6 Aug96 ?-40 27.00 <br /> Petroleum H droca rbon Constituent Concentration <br /> Contaminant Soil m /k Water (ug/L WOOS <br /> Maximum Latest Maximum Latest (ug/L) <br /> • <br /> (Apr 2011 <br /> TPHg NA NA 180,000 690 5 <br /> Benzene NA NA 250 <0.5 1 <br /> Toluene NA NA 8,700 <0.5 150 <br /> Eth lbenzene NA NA 2,400 6.7 300 <br /> Xylenes NA NA 13,000 1.4 1,750 <br /> MTBE NA NA 7.9 NA 5 <br /> TBA NA NA NA NA 1211,200a <br /> 1,2-DCA NA NA NA NA 0.5 <br /> NA: Not Analyzed, Not/,pplicable or Data Not Available <br /> mg/kg: milligrams per kilogram, parts per million <br /> ug/L: micrograms per Iitor, parts per billion <br /> WQOs: Water Quality Oojectives <br /> 'According to GeoTrack=r,wells <br /> a California Department of Public Health Notification Level/Response Level <br /> Site Description <br /> The Site is located at 106 2nd Street in Ripon, California. The Site is bounded by residences to <br /> the west and south, 2nd Street to the north and South Stockton Avenue to the east. The <br /> surrounding land us,) is mixed residential and commercial. <br /> Site History/Asses::ments <br /> In March 1991, soil contamination was identified during the removal of USTs. To date, six <br /> monitoring wells haee been installed and monitored regularly. A Site map showing the location <br /> of the former USTs and monitoring wells is provided at the end of this five year summary. <br /> Remediation Summary <br /> • Free Producl: No free product was documented throughout the life of this case <br /> • Soil Excavation: Unknown <br /> • In-Situ Soil F emediation: No soil remediation has been conducted <br /> • Groundwatei Remediation: No groundwater remediation has been conducted <br />