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T Ms Lori Duncan Project No 880-039 1A 01010000 October 25, 2005 Page 3 The groundwater elevations measured on August 8, 2005, varied from -1126 to -12 11 feet mean sea level and indicated an overall southeastern flow Groundwater analytical data are summarized on Table 1 TPHg and benzene concentrations are shown on Figure 3 REMEDIATION SYSTEM STATUS The site groundwater remediation system consists of soil vapor extraction (SVE) wells, from which soil vapors are extracted using a Catalytic Oxidizer Start up of the remediation system occurred on February 3, 2000, under the supervision of regulatory personnel The remediation system was shut down on October 1, 2004, due to fiscal constraints and has remained off since that time The County of San Joaquin was notified about the shutdown Sampling Results No vapor samples were collected System Performance Status The treatment system did not operate during the reporting period Remediation System Performance Summary TPHg removed since February 3,2000,startup(estimate) 3,244 lbs TPHg removed during this reporting period 0 lbs TPHg daily removal rate during reporting period 0 Ibsld TPHg destruction efficiency 0% TPHg emission rate to atmosphere 0 Ibsld Benzene removed since startup(estimate) 4 9 lbs Benzene removed during this reporting period 0 lbs Benzene Destruction Efficiency 0% Benzene emission rate to atmosphere 0 lbsld Average flow rate for this reporting period 0 SCFM System uptime during this reporting period None CONCLUSIONS Analytical results for groundwater samples collected from the site were generally consistent with previous sampling events Measured groundwater elevations decreased between 0 58 and 0 86 feet from the May 9, 2005, sampling event The groundwater elevations during the third quarter of 2005 indicated a general southeastern direction of flow No indications of free petroleum K 1880039 Don Rodgersftndonng Rpts10503 doc SHAW ENVIRONMENTAL,INC