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r <br /> Page 15 of 15 <br /> 1 <br /> Table 2. Groundwater Elevations <br /> UPRR Former Maintenance Facility,Tracy, California <br /> ' <br /> Well identification Date Reference Elevation Depth to Water Water Elevation <br /> feet above MSL feet BTC <br /> { ) ( ) (feet above MSL) <br /> TW-03 continued: 11/29/07 52.11 11.95 40.16 <br /> 03/18/08 52.11 11.25 40.86 <br /> 11/21/08 52.11 12.07 40.04 <br /> 03116/09 52.11 11.79 40.32 <br /> 11/19/09 52.11 12.20 39.91 <br /> 03/15/10 52.11 11.00 41.11 <br /> ' TW-04 11/07/05 52.09 LPH NA <br /> 03/07/06 52.09 11.11 40.98 <br /> 12/27/06 52.09 11.47 40.62 <br /> 03/20/07 52.09 11.43 40.66 <br /> 11/29/07 5209 LPH NA <br /> 03/18/08 52.09 LPH NA <br /> 11/21/08 52.09 LPH NA <br /> 03/16109 52.09 LPH NA <br /> 11/19/09 52.09 LPH NA <br /> 03/15/10 52.09 LPH NA <br /> Notes <br /> Groundwater elevation measurements not collected after March 2006 in extraction wells and <br /> piezometers EWP-01 through EWP-16 because the groundwater extraction system <br /> (margin well system) remains shut down. <br /> Existing wells MW-03A, MW-0313, MW03C, MW-17B, MW-18A, MW-18B, MW-19A, MW-20A, <br /> MW-21AR, and MW-21 B were approved for abandonment by the Regional Water Quality <br /> ' Control Board and are no longer included in the groundwater monitoring program. <br /> BTC Below top of casing. <br /> LPH Free product. <br /> MSL Mean Sea Level. <br /> ' NM Not measured because well inaccessible or not located. <br /> NA Data not available. <br /> C.%JAMES EISERTSTatd-1-9_UPRR-Tracy-RC000709.X.AT.W.2 <br /> 11129=10 <br /> 1 <br />