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I r <br />' alarms or shut-offs ASE also performed maintenance procedures as <br /> . necessary on all equipment <br />' <br /> REMEDIATION SYSTEM'S OPERATION <br />' OVERVIEW <br />' PumI' and Treat System <br /> The P&T system operated continuously during the month The volume <br />' recovered, 100,150 gallons, was lower than the previous month This is <br /> likely due to excessive bio-fouling in the recovery wells due to the air- <br /> spargtng operaton <br />' Carbon Changeout <br />' A carbon changeout was not required during the month of February 2002 <br />' Hydrocarbon Breakthrough <br /> Based on analytical results of the water sample collected from GAC #1 on <br />' February 8, 2002, ASE became aware that MTBE and TBA had broken <br /> through the first carbon vessel No compounds were identified in t h e <br /> samples collected from GAC#2 on February 8, 2002 or any of the <br />' following weeks At no time during the month of February 2002 were any <br /> petroleum hydrocarbons discharged to the Manteca Sanitary Sewer Line <br />' See the analytical reports attached in Appendix A <br /> Ewe <br /> During the month of February 2002, the system recovered and treated <br /> 100,150 gallons of groundwater <br /> Air_$jiargin.glYanor-Extraction System <br />' The AS/VE system operated continuously during the month of February <br /> 2002 except for brief periods of downtime for periodic, scheduled <br /> maintenance A new carburetor was installed on the IC engine which h a s <br /> repaired the propane leak discussed in last months report <br /> r <br /> Frank's One Stop Remediation System's Monthly Report — February 2002 <br /> -2- <br />