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The SVE system was taken out of operation after the July 23, 2004 monitoring event in order to repair the system and to simultaneously go into the non- operational timeframe of the "pulsed" mode operation Pulsed operation can allow soil vapor concentrations to rebound during the intervals of non- operation The August 2004 quarterly groundwater-monitoring event indicated that the groundwater elevation decreased approximately 1 73 feet from the previous ' event performed in April 2004 During this event, the average depth to groundwater was 29 46 feet bgs (-19 69 feet msl) The groundwater flow was easterly at a gradient of approximately 0 006 foot per linear foot BTEX and ' TPH-G concentrations increased in well MW-2, presumably due to the air sparging/soil venting system being temporarily out of service BTEX and TPH-G concentrations were not detected in the samples collected from wells MW-1, MW-3, or MW-4 The only oxygenate detected was TBA in well MW-2 The December 2004 quarterly groundwater-monitoring event indicated that the groundwater elevation decreased approximately 0 77 foot from the previous event performed in August 2004 During this event, the average depth to groundwater was 30 22 feet bgs (-20 46 feet msl) The groundwater flow was easterly at a gradient of approximately 0 005 foot per linear foot BTEX and TPH-G concentrations increased in well MW-2, presumably due to the air sparging/soil venting system being temporarily out of service BTEX and TPH-G were not detected in the samples collected from wells MW-1, MW-3, or MW-4 Oxygenates were not detected during this event The air ' sparging/soil venting system was placed back into operation on December 15, 2004 The March 2005 quarterly groundwater-monitoring event indicated that the groundwater elevation increased approximately 1 55 feet from the previous event performed in December 2004 During this event, the average depth to ' groundwater was 28 68 feet bgs (48 91 feet msl) The groundwater flow was easterly at a gradient of approximately 0 005 foot per linear foot BTEX and TPH-G concentrations decreased in well MW-2 BTEX and TPH-G were not ' detected in the samples collected from wells MW-1, MW-3, or MW-4 Oxygenates were not detected during this monitoring event There were no ' operational or maintenance issues with the SVE system during this period Although, after the groundwater samples were collected, the SVE system did not function properly upon re-engagement Maintenance of the system was ' scheduled The May 2005 quarterly groundwater-momtonng event indicated that the ' groundwater elevation increased approximately 2 34 feet from the previous event performed in March 2005 During this event, the average depth to groundwater was 26 34 feet bgs (46 58 feet msl) The groundwater flow was ' s Quarterly Groundwater Monitoring Report July 2005 Prepared for SARA LEE BAKERY GROUP,INC Prepared by Philip Services Corporation Investigative and Quarterly Report lard Quarterly Report 07_2005(f::nal) September 23,2005