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Mr. Jeff Baker - 3 - 18 September 2008 <br /> Stockton Terminals Technical C*ittee <br /> During our 5 June meeting, Stantec stated that a meeting was scheduled with Calcon (the OS <br /> contractor) to perform upgrades or replacements to the OS system. In the Third QMR, STTC <br /> needs to describe whether Calcon performed these repairs and/or upgrades. <br /> 3. The Second QMR requests that Regional Water Board staff modify the MRP to require <br /> quarterly sampling of wells PS/P-26 and PS/MW-1 M and annual sampling of PS/P-26, TS-1, <br /> and TS/M-1 to monitor for onsite migration of contaminants from upgradient facilities. <br /> Regional Water Board staff agrees that additional monitoring will be useful in providing <br /> additional site data. However, STTC may perform supplemental monitoring voluntarily at any <br /> time and a revision of the MRP is not needed to allow this. <br /> 4. STTC needs to implement the proposed resurveying of monitoring wells PS/WC-1 S, PS/WC- <br /> 1 M, SP/WC-1 S and SP/WC-1 M so that the groundwater gradient map can be updated in the <br /> Third QMR. <br /> In summary, by 15 December 2008, please submit a well installation report. If you have any <br /> questions regarding this letter, you may contact me at (916) 464-4811 or by email at <br /> betaylor@waterboards.ca.gov. <br /> M fI ,��, <br /> BRIANAYLOR, P.G. <br /> Engineering Geologist <br /> cc: Mr. Mark Chandler, Time Oil Company, Seattle, WA <br /> Mr. Don Pratt, BP, San Ramon <br /> Mr. Gary Haeck, Stantec Consulting Corporation., Rancho Cordova <br /> Mr. Jeffrey Wingfield, Port of Stockton <br /> Ms. Margaret Lagorio, San Joaquin County Environmental Health Department, Stockton <br /> Mr. Mark O'Brien, Environmental Risk Services Corporation, Alamo <br /> Mr. Jeremy Hughes, Levine Fricke, Granite Bay <br /> Mr. Jerry Stauffer, Valero LP, San Antonio, TX <br /> Ms. Amanda Spencer, Ash Creek Associates, Portland, OR <br />