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r <br /> S E C ® R <br /> Y <br /> Date - May 23, 2005 u <br /> Quarter 1 Q05 <br /> fP <br /> ARCO QUARTERLY GROUNDWATER MONITORING REPORT ' <br /> Facility No 4932 Address 16 E Harding Way, Stockton, CA <br /> ARCO Environmental Engineer Paul Supple h" <br /> Consulting Co/Contact Person SECOR/Rusty Benkosky <br /> Consultant Project No 77BP 54932 06 0346 <br /> Primary Agency/Regulatory ID No San Joaquin County Public Health Services (SJCPHS) <br /> Assembly Bill 681 Status Property owned by ARCO <br /> WORK PERFORMED THIS QUARTER (First Quarter— 2005)• <br /> 1 Performed quarterly groundwater monitoring and sampling <br /> ' 2 Prepared and submitted quarterly groundwater monitoring report <br /> 3 Prepared and submitted monthly groundwater discharge reports <br /> 4 Operated and maintained soil vapor extraction and groundwater extraction remedial system <br /> ' 5 Performed weekly batch extraction events in offsite remedial wells between January 5 and February <br /> 23, 2005 <br /> 6 Installed offsite ozone sparge wells <br /> WORK PROPOSED FOR NEXT QUARTER (Second Quarter— 2005): <br /> ' 1 Perform quarterly groundwater monitoring and sampling <br /> 2 Operate and maintain soil vapor extraction and groundwater extraction remedial system <br /> 3 Prepare and submit quarterly groundwater monitoring report <br /> ' 4 Install and begin operation of the offsite ozone sparge system (system construction began May 2, <br /> 2005) <br /> ' 5 Prepare and submit monthly groundwater discharge reports <br /> 6 Prepare and submit report documenting ozone sparge well and ozone system installation <br /> 7 Operate and maintain offsite ozone sparge wells and ozone sparge remedial system <br /> 1 <br /> a <br /> x <br /> E 16P-ARMA9321Q1V1Rs1200511 QMR05 doc a <br /> a <br />