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Summary of Monitoring and Sampling Activities <br /> Thrifty Oil Co. Station #172 <br /> Fourth Quarter 2006 <br /> Reporting Period: 10/1/2006 to 12/31/2006 <br /> Site <br /> Information: <br /> Site address: TOC SS #172 (Circle K Station#2705449) <br /> 7647 Pacific Avenue <br /> ................ <br /> Stockton <br /> .......................... ..................... <br /> Global ID No.: T0607700504 <br /> EDF Confirmation No.: 6866999089 <br /> Le4A_A&e <br /> Rcy No.: RWQCB #390652 <br /> Lead ................... San Joaquin County_.EHD <br /> Agency Contact: Mike Infuma/209468-3454 <br /> Project Manager: Larry Higinbotharn/ 562-921-3581 ext. 325 <br /> Field Activity: <br /> Groundwater wells onsite: 5 <br /> Groundwater wells offsite: 3 <br /> Dg_e asmonitored: 11/21/06 ........ <br /> Dates) sampled_' 11/21/06 -------........... <br /> Groundwater wells gauged: 8 <br /> Groundwater wells sampled: 8 <br /> Purging method: Bailer <br /> Treatment/disposal method during sampling Drums– Safety-Kleen pickup <br /> event: <br /> .......... ................ <br /> Groundwater wells.with....free_product: 0 ...... <br /> Free�rqduct thickness (feet): NA ....... <br /> Free product bailouts other than sampling NA <br /> event: <br /> Treatment/ disposal method/free product NA <br /> bailouts: ...... <br /> Site Hydrogeology: <br /> —Doth-to r ouq,dw4ter Lfeq b -.-.-----.,32..-7.8-to 36.41 <br /> Groundwater elevation (feet above mean sea -19.91 to -23.23 <br /> lever: ..................... <br /> Groundwater gradient and flow direction: Generally west, and local radial flow at <br /> ___q.912 to 0.083 ft./ft. <br /> Consistent with previous civarter: No <br />