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w <br /> 0_ A * - GROUNDWATER <br /> LEE] TECHNOLOGY ® <br /> Groundwater Technology,1nc <br /> 1401 Halyard Drive,Suite 140,West Sacramento,CA 95691 USA <br /> January 22, 1996 Tel (916)372-4700 Drax (916)372-8781 <br /> L , <br /> r Mr Bob Vasquez <br /> 3 .',The Southland Corporation <br /> 3146 Gold Camp Drive,#300 <br /> -Rancho Cordova, California 95670 <br /> Subject Fourth Quarter 1995 Monitoring and Sampling Report <br /> Southland Site No 20304 <br /> 455 Grant Line Road <br /> Tracy,California <br /> GTI Project 02070 0105 <br /> Dear Mr Vasquez <br /> ` Tk 4Fourfii Quarter 1995 Mondonng and Sampling Report presents the results of mondoring and <br /> .,sampling activities performed by Groundwater Technology, Inc at The Southland Corporation <br /> ESouthland) Store No 20304 located at 455 Grant Line Road in Tracy,California (Figures 1 and 2, <br /> Oachment 1)for the period September 19 through December 13, 1995 Activities conducted during <br /> tls reporting period are summarized 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 11 monitoring wells and the groundwater <br /> extraction well GWE-1 and submitted to a certified laboratory for analysis for benzene, <br /> toluene, ethylbenzene and xylenes (BTEX), and total petroleum hydrocarbons-as- <br /> gasoline (TPH-G) <br /> �_Greundwater Monitoring Data <br /> Groundwater monitoring was performed on December 13, 1995 Pnor to mondoting jhe well caps of <br /> each well were opened to allow the water level in each well to stabilize to atmospheric pressure The <br /> DTW was measured to the nearest 0 01 foot from the top of the well casing using an ORS <br /> Environmental Equipment INTERFACE PROBE Well Monitoring System <br /> Separate-phase hydrocarbons were not detected in any of the monitonng,wells The water table <br /> ilevabons, calculated from the Decgmber 13, 1995 monitoring data,were used to prepare a <br /> ;potenbometnc surface map (Figure 2,Attachment 1) The groundwater flow is toward the northeast at <br /> hydraulic gradient ranging from 0 004 to 0 008 ft/ft The historical and current water level <br /> measurements are presented in Table 1 (Attachment 2) Field Data sheets are included in <br /> 'Agachment 3 <br /> a, <br /> 07050495 RPT(STHL S) <br /> Offices lhvoughoul the 1 S Canudu and Orcrsea <br />