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Columbo/Toscana - 3 - 26 September 2006 <br /> 1444 S. Lincoln St., Stockton <br /> interactions between plumes. While the SECOR reports inferred groundwater as <br /> moving onsite from Texaco, subsequent Texaco groundwater monitoring has <br /> consistently shown groundwater flows from the Site towards Texaco. The above- <br /> required workplan will also include a proposal for an additional monitoring well(s) to <br /> adequately characterize vertical and lateral extent of the petroleum hydrocarbons at the <br /> Site. The new wells shall be installed so that their water levels are lithologically <br /> representative of the zones of the existing dual completion wells, or deeper if <br /> necessary. <br /> • Submit all documents (workplans and reports) and data in electronic format to <br /> Geotracker, as required by the State Water Resources Control Board. <br /> This transfer of lead agency should not cause or result in any delay in the ongoing <br /> investigation, monitoring or remediation of your release. If you have any questions, please call <br /> me at (916) 464-4615. <br /> JvrZ�1, <br /> ames L. L. Barton, P.G. <br /> gineering Geologist <br /> Enclosures <br /> cc: Ms. Jennifer Jordan, State Water Resources Control Board, Sacramento <br /> Ms. Margaret Lagorio, San Joaquin County Environmental Health Department, Stockton <br /> Ms. Amanda Berlin; Mayall, Hurley, Knutsen, Smith & Greene; <br /> 2453 Grand Canal Blvd.; Stockton 95207 <br /> Mr. Bruce Scarbrough, SECOR International Inc, 57 Lafayette Circle, San Francisco <br /> 94549 <br />