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ATC Associates,Inc Project No 99975 7501 <br /> attests to the relatively high degree of gas permeability in the soil surrounding the well Using <br /> ' supersensitive magnahelix vacuum gauges, the most notable vacuum effect was observed in <br /> monitoring well BEI-MW1 located approximately 40 feet from the co-extraction well A <br /> differential of 0 3 inches of water was observed between the vacuum measured in the well and <br /> ambient air pressure The vacuum differential for BEI-MW3, located only about 10-12 feet <br /> from the extraction well was only 0 12 inches of water The vacuum influence between co- <br /> extraction well EW-1 and monitoring well BEI-MW2 was evident but even smaller having a <br /> ' differential of 0 01 inches of water <br /> t5.0 SELF-MONITORING PROGRAM SCHEDULE <br /> ' The next quarterly groundwater monitoring event is scheduled for early October 1999 <br /> ' 60 CERTIFICATION <br /> This report has been reviewed and approved by the client or responsible party To the best of <br /> ' our knowledge, all statements and information provided in this report are true and correct <br /> % F.D <br /> Ronald W Michelson, G 3875 ��ca �p W ��Cy 02 <br /> ' Principal Geologist 9XCM <br /> a <br /> No 3875 • <br /> ' 7.0 DISTRIBUTION C`P e,100 P <br /> l�rF <br /> OF C A�1����\ <br /> ' Value Reclamation Corporation <br /> 4318 Valley Avenue, Suite B <br /> Pleasanton, CA 94566 <br /> Mr Jeff Long <br /> Environmental Health Specialist <br /> ' San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 E Weber Avenue, 3rd Floor <br /> ' Stockton, CA 95201-0388 <br /> Mr Steve Mort <br /> ' Don's Mobile Glass <br /> �j 1424 H Street <br /> Modesto, CA 95354 <br /> 1 <br /> Groundwater Monitoring and Remediation Status Report Page 4 <br /> 1 <br />