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11 <br /> L% <br /> 000 GROUNDWATER <br /> ❑ ❑ <br /> TECHNOLOGY,j, INC. 1401 Halyard Dnve,Smte 140,West Sacramento,CA 95691,(916)3724700 <br /> FAX(916)372-8781 <br /> July 19, 1995 <br /> Mr Bob Vasquez <br /> The Southland Corporation <br /> 3146 Gold Camp Drive,#300 <br /> Rancho Cordova, California 95670 <br /> Subject Second Quarter 1995 Monitoring and Sampling Report <br /> Southland Site No 20304 <br /> 455 Grant lane Road <br /> Tracy, California <br /> Project No 02070 0105 <br /> Dear Mr Vasquez <br /> This Second Quarter 1995 Mon►tonng and Sampling Report presents the results of monitoring and <br /> sampling activities performed by Groundwater Technology, Inc at The Southland Corporation <br /> . (Southland) Store No 20304 located at 455 Grant Line Road in Tracy, California (Figures 1 and 2, <br /> Attachment 1) for the period April 1 through June 16, 1995 A summary of activities conducted during <br /> this reporting period is provided below <br /> ■ Depth to water (DTW) was gauged in 11 groundwater monitoring wells and one <br /> groundwater extraction well (Figure 2,Attachment 1) <br /> ■ Groundwater samples were collected from the 12 site-related monitoring wells The <br /> samples were submitted to a California-certified laboratory and analyzed for benzene, <br /> toluene, ethylbenzene and xylenes (STEX), and total petroleum hydrocarbons-as- <br /> gasoline (TPH-G) <br /> Groundwater Monitoring Data <br /> Groundwater monitoring was performed on June 16, 1995 Pnor to monitoring,the well caps of each <br /> well were opened to allow the water level in each well to stabilize to atmospheric pressure The DTW <br /> was measured to the nearest 0 01 foot from the top of the well casing using an ORS Environmental <br /> Equipment INTERFACE PROBE Well Monitoring System <br /> Separate-phase hydrocarbons were not detected in any of the monitoring wells The water table <br /> elevations, calculated from the June 16, 1995 monitoring data,were used to prepare a potentiometnc <br /> surface map(Figure 2, Attachment 1) The groundwater flow is toward the northeast at a hydraulic <br /> gradient ranging from 0 01 to 0 004 ft/ft The historical and current water level measurements are <br /> presented in Table 1 (Attachment 2) Field Data sheets are included in Attachment 3 <br /> 01050295 RPT(s7HL s) y <br /> Offices throughout the US Canada and Overseas <br />