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California ' ;ional Water Quality Cont Board <br /> Central Valley Region " <br /> Karl E. Longlev, ScD, I'.E., Chair <br /> Linda S.Adams Arnold <br /> Secretari lot Sacramento blain Office Schwarzenegger <br /> Em.ironmewal 11020 Sun Center Drive#200. Kancho Cordova.California 95670-0114 (iorernor <br /> Prow,timi Phone(916)464-3291 -FAX(916)464-4645 <br /> http/Avwx% waterboards ca goy/ccntralvalle} <br /> �� rte <br /> Q161( <br /> 29 August 2007 <br /> 20 <br /> Mr. Joe Aldridge, Remediation Manager <br /> NuStar Energy L.P `S <br /> 2330 North Loop 1604 West <br /> San Antonio, TX 78278 <br /> MONITORING AND REPORTING PROGRAM NO. R5-2007-0818, ST SERVICES <br /> STOCKTON TERMINAL, 2941 NAVY DRIVE, STOCKTON, SAN JOAQUIN COUNTY <br /> On 15 May 2007, staff of the Regional Water Quality Control Board - Central Valley Region <br /> (Regional Water Board) sent you a letter with a draft revised monitoring and reporting program <br /> (MRP) for the ST Services Stockton Terminal located at 2941 Navy Drive in Stockton (Site). <br /> On 10 July 2007 Ms. Amanda Spencer and Mr. Andrew Schmidt of Ash Creek Associates, Inc. <br /> (Ash Creek) and you, attended a meeting with Regional Water Board staff on behalf of ST <br /> Services, L.L.C. (a subsidiary of NuStar Energy L.P. [NuStar]) to discuss revision of the <br /> existing MRP No. R5-2004-0822. Based on discussions during the meeting, Ash Creek <br /> prepared the 1 August 2007 Draft MRP for Support Terminals Stockton Facility (Response). <br /> In the Response, NuStar recommends changes to the 15 May 2007 Draft MRP as discussed <br /> in our 10 July 2007 meeting. The Response concurs with the sampling frequencies proposed <br /> in the Draft MRP and is consistent with the oxygenate analytical program described in our <br /> 22 December 2004 letter. However, NuStar proposes excluding sampling in ST/WC-1A and <br /> ST/WC-1 B, and excluding MTBE analysis from samples collected from well PS/WC-4M. <br /> Regional Water Board staff concur with NuStar's proposed changes to the oxygenate <br /> analytical program, with one exception. Based on the historical detections of MTBE in <br /> groundwater samples collected from PS/WC-4M, continued monitoring for this oxygenate is <br /> warranted. The absence of TPHg and BTEX indicate that monitoring for these constituents <br /> may be discontinued from PS/WC-4M. In addition, the consistent presence of TPHd in <br /> monitoring wells ST/WC-1A and ST/WC-1 B show that annual monitoring is appropriate in <br /> these wells. <br /> Staff has incorporated these revisions into the final MRP No. R5-2007-0818, which is attached <br /> and now in effect. Future monitoring events must be conducted in accordance with MRP R5- <br /> 2007-0818. <br /> California Environmental Protection Agency <br /> ��� Reerr/ee!Papci <br />