Laserfiche WebLink
Lopez Property • • December 2013 <br /> 1601 French Camp Turnpike, Stockton <br /> Claim No: 18245 <br /> Monitoring Well Information <br /> ;MW4 <br /> 77ii <br /> ate Installed Screen Interval Depth to Water <br /> (feet bgs) (feet bgs) <br /> 09/04/13 <br /> ember 2004 10-30 16.30 <br /> ember 2004 15-35 NM <br /> ember 2004 15-35 NM <br /> ember 2006 15-35 NM <br /> MW5 ME <br /> 2006 15-35 16.44 <br /> MW6 2006 15-3516.13 <br /> MW7 2006 15-35 NM <br /> MW8 2006 55-65 16.50 <br /> MW9 7 110-120 NM <br /> MW10 7 50-60 16.38 <br /> MW1I 7 55-65 16.55 <br /> MW12 June 2010 62-72 NM <br /> NM: Not measured <br /> Remediation Summary <br /> • Free Product: None reported in GeoTracker. <br /> • Soil Excavation: An unknown volume of impacted soil was excavated to a depth of 10 feet and <br /> disposed offsite in 1987 (Advanced GeoEnvironmental, May 2011). <br /> • In-Situ Soil/Groundwater Remediation: Soil vapor extraction was conducted between June <br /> 2013 and September 2013 for a total of 2,232 hours, which removed 340 pounds of TPHg. The <br /> rate of removal in September 2013 was approximately 2 pounds of TPHg per day. Ozone <br /> injection was conducted between April 2013 and September 2013. <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 sample-feet] [mg/kg date sample-feet] <br /> Benzene <0.005 04/03/12 01-5' <0.005 11/22/04 MW1-10' <br /> Eth (benzene <0.005 04/03/12 01-5' 0.08 11/22/04 MW1-10' <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 14 <br />