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California Regional Water Quality Control Boar i AL HE :ai <br /> Central Valley Region ;,:, t �7 4V,Cr - , H' <br /> Robert Schneider,Chair ��"�'�"��� <br /> ��Vinston H. Hickox PM 12� y Davis <br /> Secreta,yfor Sacramento Main Office 03 11� 18ternor <br /> Environmental Internet Address: http://www.swTcb.ca.gov/rwgcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> 15 July 2003 <br /> Mr. Richard Brandes <br /> ST Services <br /> 2801 Waterfront Road <br /> Martinez, CA 94553 <br /> REVIEW OF PILOT STUDY WORK PLAN, ST SERVICES TERMINAL #29, <br /> STOCKTON, SAN JOAQUIN COUNTY <br /> We have reviewed the 8 May 2003 Removal Action Report (Report) and the 3 July 2003 <br /> Enhanced Bioremediation Pilot Study Work Plan (Work Plan) submitted by Hart Crowser (HC) <br /> on behalf of ST Services Terminal for Terminal #29 in Stockton. The Report discusses the soil <br /> removal activities from six trenches to determine the lateral extent of petroleum pollution. We <br /> have no comments on the Report. <br /> The Work Plan was submitted as a supplement to the Report of Waste Discharge (Form 200) to <br /> provide the necessary information for Regional Board staff to prepare Waste Discharge <br /> Requirements (WDRs). The Work Plan proposes to install three injection wells, three extraction <br /> wells, six pre-packed wells, and one boring and to install and operate the enzyme-catalyzed <br /> dissolved oxygen in situ treatment. The proposed system will extract groundwater downgradient <br /> of the treatment area, add a bacterial consortium, enzyme enhancements, and specialized <br /> nutrients to the extracted groundwater, oxygenate the water, and then re-inject the groundwater <br /> upgradient of the treatment area. Extracting groundwater at the downgradient end of the <br /> treatment area along with the natural groundwater flow direction will pull the treated <br /> groundwater through the treatment area. <br /> We have the following comments on the Work Plan: <br /> 1. Section 2.3 of the Work Plan states groundwater flows north-northeast. Regional Board <br /> staff believes the groundwater flow direction is to the south-southeast. ST Services needs <br /> to verify the groundwater flow direction. <br /> 2. Section 3.2 of the Work Plan states HC will provide 48 hours notice of scheduled <br /> fieldwork. We request a minimum of 72 hours for notification, but prefer one week. <br /> California Environmental Protection Agency <br /> co Recycled Paper <br /> The energy challenge facing California is real. Every Califomian needs to take immediate action to reduce energy consumption. <br /> For a list of simple ways you can reduce demand and cut your energy costs,see our Web-site at http://www.swrcb.ca.gov/rwgcb5 <br />