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r3< <Y <br /> Third Quarter 2005 Groundwater Monitoring Report <br /> • Cohn Property,3755 Munford Avenue,Stockton,California <br /> Page 3 <br /> i <br /> October 4, 2005 - Apex submitted a workplan proposing the installation of an ozone air sparge <br /> system and updated site conceptual model <br /> October 4, 2005 - Apex submitted Workplan for Deep Groundwater Monitoring Well <br /> Installation, proposing to install two deep groundwater-monitonng wells (MW-11 through MW- <br /> 12) <br /> GENERAL SITE INFORMATION <br /> Site name: Cohn Property <br /> Site address: 3755 Munford Avenue, Stockton, California <br /> Current property owner. Mr Phil Cohn <br /> Current site use: Manufacturer ofjct ski and small boat trailers <br /> Current phase of project: Groundwater monitoring <br /> Tanks at site: None <br /> Number of wells 10 monitoring wells, one onsite domestic well, 3 vapor <br /> extraction wells, 2 piezometers, and 2 air sparge wells <br /> GROUNDWATER MONITORING SUMMARY <br /> • Domestic well sampling date. August 8, 2005 <br /> Gauging and sampling date. September 19, 2005 <br /> Wells gauged and sampled: MW-1 through MW-10 <br /> Wells gauged only. None <br /> Wells sampled only: DW <br /> Groundwater flow direction. South with a depression at well MW-8 <br /> Groundwater gradient: 0 0056 ft/ft <br /> Laboratory: California Laboratory Service, Inc , Rancho Cordova, <br /> California <br />