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Former UPRR Maintenance , acility 3 19 February 2009 <br /> Tracy, San Joaquin County <br /> With the above changes and conditions adopted, I concur with the Work Plan as proposed. <br /> Please respond by letter to this office with the requested Addendum to the Work Plan by <br /> 19 March 2009. The Addendum should include the following: <br /> • A map showing the inferred source area. <br /> • Sampling and analysis plan for VOC confirmation sampling via soil gas collection from <br /> Treatment Beds 1 and 2. <br /> • Sampling and analysis plan for DI-WET for metals from Treatment Beds 1 and 2, or <br /> written justification for omitting this sampling. <br /> • Sampling and analysis plan for total metals, total lead, and polynuclear aromatic <br /> hydrocarbons beneath and downgradient of Treatment Beds 1 and 2, or written <br /> justification for omitting this sampling. <br /> If you have any questions regarding this correspondence or subject matter, please contact me <br /> at (916) 464-1588 or email me at kdominic@waterboards.ca.gov. <br /> Kathryn/Dominic, P.G. <br /> Engineering Geologist <br /> cc Ms. Lisa Teague, ARCADIS, Petaluma <br /> Mr. Michael J. Infurna, San Joaquin County Public Health. Stockton <br />