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C <br /> C <br /> Soil samples of well destruction materials were collected on July 24, 2009 for chemical testing. <br /> The samples were collected in pre-cleaned brass tubes driven into the soil completely filling each <br /> tube. Each sample was then sealed with foil and endcaps, labeled, logged onto chain-of-custody <br /> forms and shipped to to laboratory in a chilled ice chest on crushed ice. <br /> 2.0 Chemical Analysis and Results <br /> Two (2) soil samples were collected from the stockpiled cuttings for analysis at Kiff Analytical, <br /> Inc., certified analytical laboratory. The soil samples were 1 : composited by the <br /> laboratory. Samples were tested as follows:Total Petroleum Hydrocarbons as Gasoline(TPHG) <br /> and Diesel (TPHD), and Total Lead using EPA Methods 8015m, 8260B and 6010B. The <br /> laboratory analyzed samples on a"normal" turnaround basis and the analytical report is attached. <br /> The chemical analysis results show that TPHG was not detected at <1 milligram per kilogram <br /> (Mg/kg), TPHD was detected at 10 Mg/kg and Lead was detected at 5.7 Mg/kg. These results <br /> are below to current Regional Water Quality Control Board Environmental Screening Levels <br /> (Nov. 2007, updated May 2008 interim draft version, Table A shallow soil <3 meters, <br /> groundwater is a possible source of drinking water) for TPHG at 83Mg/kg, TPHD at 83 Mg/kg <br /> and Lead at 200 Mg/kg. Wright will arrange for the proper spreading of the soil well destruction <br /> materials. The concrete, steel and plastic well materials were disposed at Tracy Material <br /> Recovery where they were recycled(see attached receipt/weight ticket). <br /> 3.0 State Well Completion Reports <br /> State Well Completion Reports were completed for each monitoring well destruction (see <br /> attached Reports). If you have any questions,please call or write. <br /> Sincerely, t4AL Q <br /> Wright Environmental Services,Inc. nn Gj5�pHER At'0 O� <br /> O CERTIFIED <br /> 9 G? <br /> *John � NGINEERIN N Lynch Christopher M.Palmer a EGEOLEOGIST <br /> President C.E. G. 1262 `P> s/all al <br /> Cc: Mr.Michael Infurna,San Joaquin County Environmental Health De Or CA\.\F�Q <br /> Mr. James Barton,State of California Regional Water Quality Control Board <br /> Mr. Earl Breitstein,Firestone Tire <br /> Ms.Janice Brown <br /> Mr.Gary Cox <br /> Attachments: Figure 1. Well Location Map <br /> San Joaquin County Well Destruction Pen-nit <br /> State Well Completion Reports <br /> Chemical Analytical Report and Chain-of-Custody <br /> Tracy Material Recovery Receipt/Weight Ticket <br /> Page 2 of 2 <br />