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Mr Kyle Christie Project 0805-114 04 <br /> December b, 1995 <br /> Page 5 <br /> performance history is currently being reviewed and evaluated The system will be restarted <br /> after the destruction efficiency problem has been corrected <br /> ACTIVITIES PERFORMED DURING THE THIRD QUARTER <br /> • EMCON observed the drilling of four soil borings and the installation of two vapor <br /> extraction wells (VW-11 and VW-12) and two air sparge wells (AS-2 and AS-3) Results <br /> of this investigation will be presented in an addendum to the PAR <br /> • EMCON performed quarterly groundwater monitoring <br /> • EMCON compiled and evaluated groundwater monitoring data <br /> • EMCON connected the new vapor extraction and sparge wells to the remediation system <br /> on August 29, 1995 <br /> • EMCON conducted routine operation and maintenance of the remediation system <br /> • EMCON collected air samples from the SVE system to monitor system performance <br /> • EMCON conducted source testing to reestablish the destruction efficiency <br /> ANTICIPATED WORK <br /> • ARCO will continue to perform quarterly groundwater monitoring The next sampling <br /> event is scheduled for November 1995 <br /> • EMCON will complete and submit an addendum to the PAR <br /> • Based on the telephone conversation with SJCPHS, on November 6, 1995, SJCPHS <br /> requested the well abandonment of well MW-8 EMCON will prepare a workplan to <br /> abandon well MW-8 <br /> • Manufacturer will correct system problem <br /> • EMCON will restartremediation system <br /> • EMCON will conduct routine operation and maintenance on the remediation system <br /> • EMCON will monitor and optimize the performance of the remediation system <br /> • EMCON will collect air samples from the remediation system for laboratory analysis <br /> sACW\PJM805\08051140 4Es-95\pas 1 <br />