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J/�`� (�' '•;1 Eut+UNr:G. BNuwu JN. <br /> C n F i a n r n Mnn,l E.r RooalouEz <br /> e 0 <br /> Water Boards AV!rl(,N}Ninr Yr;r)fl f.Ir N <br /> Central Valley Regional Water Quality Control Board <br /> 23 January 2013 R C" <br /> .!AN 2 4 2010 <br /> Ms. Renee Robinson <br /> NuStar Energy L.P. ENVIt;ONMENTALHEALTH <br /> 2330 North Loop 1604 West PER,,JITISERVICES <br /> San Antonio, TX 78278 <br /> REVISED CLEANUP PLAN, NUSTAR TERMINALS OPERATING PARTNERSHIP L.P., <br /> STOCKTON TERMINAL, STOCKTON, SAN JOAQUIN COUNTY <br /> California Regional Water Quality Control Board, Central Valley Region (Central Valley Water <br /> Board) staff reviewed the 7 November 2012 Revised Cleanup Plan (Report) prepared by Ash <br /> Creek Associates, Inc. (Ash Creek) on behalf of NuStar Terminals Operating Partnership, L.P. <br /> (NuStar) Stockton Terminal at 2941 Navy Drive in Stockton (Site). The Report recommends <br /> long-term monitoring with a reduced monitoring program at the Site. Central Valley Water <br /> Board staff comments on the Report are included in the attached memorandum. In summary, <br /> staff concurs with the long-term monitoring at the Site and we have attached a draft Monitoring <br /> and Reporting Order with proposed changes. Future monitoring reports need to include <br /> updated isoconcentration contours and should use the water quality objectives as cleanup <br /> levels. As discussed in the attached memorandum, NuStar should conduct reduced monitoring <br /> at the Site for two years and then reevaluate the Site for potential petroleum hydrocarbon plume <br /> migration. <br /> We request that NuStar submit the following items by the dates listed: <br /> • By 22 February 2013, review the attached draft Monitoring and Reporting Program <br /> Order and submit comments to Central Valley Water Board staff. <br /> • Conduct two years of monitoring and submit a petroleum hydrocarbon migration <br /> reevaluation report by 1 November 2015. The report may be included with a regularly- <br /> scheduled monitoring report and should include plume maps showing the changes of the <br /> petroleum hydrocarbon plume configuration; updated mass remaining estimates; and <br /> recommendations. <br /> KARL E. LON(3L[Y SC.D, r.E., CHAIR 1 PAMELA C. CR=014. EXECUTIVE OFFICER <br /> i 7ni0 Sr:n turn Ar t)rwA V7nn.Rancno Cordova CA 95670 1 www watarboards.ca govlcenvawauey <br /> i.D m cru ro nnr•;n <br />