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1 <br /> I <br /> Ms Lori Duncan Project No 880-039 1A 01010000 <br /> December 16, 2005 <br /> Page 3 <br /> VW-4 at a concentration of 0 63 pg/L MTBE was not detected in any sample during this event <br />' Copies of the chain-of-custody records and laboratory analytical report are included in <br /> Attachment 3 <br /> The groundwater elevations measured on November 7, 2005, varied from -12 42 to -13 39 feet <br /> mean sea level and indicated an overall southeastern flow, away from the Port of Stockton <br /> Groundwater analytical data are summarized on Table I TPHg and benzene concentrations are <br /> shown on Figure 3 <br /> REMEDIATION SYSTEM STATUS <br /> 1 <br /> The site remediation system consists of soil vapor extraction (SVE) wells, from which soil <br /> vapors are extracted using a Catalytic Oxidizer Start up of the remediation system occurred on <br /> February 3, 2000, under the supervision of regulatory personnel The remediation system was <br /> shut down on October 1, 2004, due to fiscal constraints It has remained off since that time, per <br /> an understanding with SJCPHS that it was no longer affecting significant cleanup, but would <br /> likely be required for use in concert with subsequent groundwater remediation <br /> Sampling Results <br /> No vapor samples were collected <br /> System Performance Status <br /> The treatment system did not operate during the reporting period <br /> Remediation System Performance Summary <br /> TPHg removed since February 3,2000,startup(estimate) 3,244 lbs <br /> TPHg removed during this reporting period 0 lbs <br /> TPHg daily removal rate during reporting period 0 lbsld <br /> TPHg destruction efficiency 0% <br /> TPHg emission rate to atmosphere 0 Ibsld <br /> Benzene removed since startup(estimate) 4 9 lbs <br /> Benzene removed during this reporting period 0 lbs <br /> Benzene Destruction Efficiency 0% <br /> Benzene emission rate to atmosphere 0 Ibsld <br /> Average flow rate for this reporting period 0 SCFM <br /> System uptime during this reporting period None <br /> K 1880039 Don RodgersWonitonng Rpts105-0414005 doc SHAW ENVIRONMENTAL,INC <br />