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Harry's Auto Mart 4 ' ` November 2013 <br /> 2662 North Wilson Way, Stockton <br /> Claim No: 15094 <br /> Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Depth to Water <br /> (feet bgs) (feet bgs) <br /> (06128/13) <br /> MW1 February 2001 45-65 47.37 <br /> MW2 Februa 2001 35-60 46.61 <br /> MW3 February 2001 35-60 NM <br /> MW4 February 2001 35-60 47.25 <br /> MW5 December 2003 .55-75 45.82 <br /> MW6 December 2003 55-75 46.44 <br /> MW7 December 2003 55-75 NM <br /> MW1 D December 2003 95-100 47.70 <br /> NM: Not measured <br /> Remediation Summary <br /> • Free Product: No free product was documented in GeoTracker. <br /> • Soil Excavation: An unknown volume of impacted soil was excavated to approximately <br /> 10 feet, disposed offsite, and replaced with clean fill in 1989. <br /> • In-Situ Soil/Groundwater Remediation: Soil vapor extraction and air sparging were <br /> conducted between.December 2012 and September 2013 for a total of 11,759 hours, which <br /> removed 6,714 pounds of TPHg. The rate of TPHg extraction in September 2013 was 7 <br /> pounds per day. <br /> Most Recent Concentrations of Petroleum Constituents in Soil <br /> Constituent Maximum 0-5 feet bgs Maximum 5-10 feet bgs <br /> [mg/kg (date)] [mg/kg (date)] <br /> Benzene 0.15 (04/12/89) 0.21 (04/12/89) <br /> Eth (benzene 0.37 04/12/89 7.8 04/12/89 <br /> Naphthalene NA NA <br /> PAHs NA NA <br /> NA: Not Analyzed, Not Applicable or Data Not Available <br /> mg/kg: Milligrams per kilogram, parts per million . <br /> <: Not detected at or above stated reporting limit <br /> PAHs: Polycyclic aromatic hydrocarbons <br /> Page 8 of 13 <br />