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Current Phase of Project Remediation <br /> Frequency of Groundwater Sampling All Monitoring Wells= Quarter) <br /> Frequency of Groundwater Monitoring Quarterly <br /> Sampling Date December 2, 1998 <br /> Is Free Product (FP) Present on Site No <br /> FP Recovered This Quarter N/A <br /> Cumulative FP Recovered to Date N/A <br /> Current Remediation Techniques SVE/Air Bubbling (SVE system <br /> down since 11/24/97 due to low <br /> TPHG concentrations in soil vapor) <br /> Approximate Depth to Groundwater 37 66 to 39 75 <br /> Groundwater Flow Direction Southeast <br /> Groundwater Gradient 0 002 <br /> SVE QUARTERLY OPERATION AND PERFORMANCE- <br /> Equipment Inventory Airex Katox Catalytic Oxidizer(100-scfm) <br /> Operating Mode Catalytic <br /> • SJVUAPCD Permit No N-3218-1-0 <br /> Total Petroleum Hydrocarbons (TPH) SVE system down since 11/24/97 due to low <br /> Conc End of Period (lab) TPHG concentrations in sod vapor <br /> Benzene Conc End of Period (lab) NA <br /> Flow Rate End of Period NA <br /> Applied Vacuum This Period NA <br /> HC Destroyed This Period (lab) NA <br /> Utility Usage (electrical/gas/propane) NA <br /> Operating Hours This Period NA <br /> Percent Time Operational NA <br /> Number of Auto Shutdowns NA <br /> CPtiE 1ARC012130�QTRLY12130Q498 DOC 98\1sg 1 <br />