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Mr. Werner Sicvol - 2 - �,. 15 September 2000 <br />Quarterly Monitoring Report <br />The QMR shows that the constituents of concern (COCs) decreased in MW 5R to historic lows and <br />MW 6 is being captured by extraction wells 4-6. The QMR also states that the GWETS removed <br />5.8 pounds of VOCs during the second quarter, and requests removal of benzene, toluene, <br />ethylbenzene, and xylenes from the monitoring program since they have not been detected for the last <br />five quarters. This request is hereby approved. <br />The QMR states that the soil vapor extraction system (SVES) will be restarted in September. Please <br />inform me at least 72 hours prior to restarting the SVES so that I may present to observe. If you have <br />any questions, you may call me at (916) 255-3081 or e-mail at isorenp@rb5s.swrcb.ca.gov. <br />�- , <br />PHI_f LII'�S. L RciN�A1 <br />Associate Engineer <br />cc: Ms. Margaret Lagorio, San Joaquin County Public Health Services, Stockton <br />Mr. Fred Kintzer, Parsons Engineering Science, Inc, Oakland <br />