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I + Table 7 II Summary of Neighborhood Groundwater Flow Directions and Hydraulic Gradients Former Colombo / Toscana Bakery 1444 South Lincoln Street Stockton , California 95206 I No . of Wells Well Screen Hydraulic Site Name Site Address Screened in Intervals Groundwater I Gradient Flow Direction Aquifer' (feet bgs ) (foot- per-foot) Notes: + bgs = Below ground surface. SSW = South-southwest. NDA = No data available. NNE = North-northeast. NE = Northeast. SSE = South-southeast. SE = Southeast. i 1 . If a site is not listed for a specific aquifer, then no wells have been installed in that zone for the site. 2. Former Texaco wells were included in gradient and flow direction calculations. References : Data for the Former Colombo/roscana site were cited from the Quarterly Groundwater Monitoring Report (Second Quarter - April 2008), June 19, 2008 (PSC). Data for the Former Dolly Madison site were cited from the Quarterly Groundwater Monitoring Report, Second Quarter 2008, July 21 , 2008 (Stratus Environmental, Inc.). Data for the Former Texaco site were cited from the Groundwater Monitoring Report - First Quarter 2008, April 3, 2008 (Conestoga-Rovers & Associates) . Data for the Former Arco site were cited from the Quarterly Groundwater Monitoring and Remediation Progress Report, First Quarter 2008, May 23, 2008 (Secor Environmental, Inc.) Data for the Chevron site were cited from the First Quarter 2008 Groundwater Monitoring Report, May 16, 2008 (Arcadis) . Data for The Transmission Shop site were cited from the Groundwater Characterization And Second Quarter 2008 Monitoring Report, May 2008 (Shaw Environmental, Inc.). 1 l 1 t I 1 i S:\Shared\UST\Sara Lee\ProjechStockton (Lincoln Street)\2008 Remedial—Subsurface Investigalion\2008_08 - Report\Investigation Report & SCM Tables (Rev) .xls 2 of 2