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<br /> <br />Department of Toxic Substances Control <br />Meredith Williams, Ph.D., Director <br />8800 Cal Center Drive <br />Sacramento, California 95826-3200 <br />Jared Blumenfeld <br />Secretary for <br />Environmental Protection <br />Gavin Newsom <br />Governor <br />February 28, 2022 <br />Mr. Jason Cashman <br />Environmental Manager <br />Port of Stockton <br />Post Office Box 2089 <br />Stockton, California 95201 <br />jcashman@stocktonport.com <br />STOCKTON, ROUGH AND READY ISLAND (39420010): APPROVAL OF <br />JANUARY 5, 2022 VEGETATION CONTROL AND SUPPLEMENTAL <br />GEOTECHNICAL INVESTIGATION WORK PLAN <br />Dear Mr. Cashman: <br />By email dated January 5, 2022, Haley & Aldrich, Inc. submitted the Draft Vegetation <br />and Control and Supplemental Geotechnical Investigation Work Plan, Port of Stockton <br />Area 47 (Work Plan) to the Department of Toxic Substances Control (DTSC) on <br />behalf of the Port of Stockton. The Work Plan was prepared to detail the field activities <br />including vegetation clearing and advancing supplemental cone penetration test (CPT) <br />in support of the development of Area 47. DTSC reviewed the Work Plan and does not <br />have any comments. <br />DTSC looks forward to reviewing the CPT results within 45 days after completing the <br />fieldwork. If you have any questions, please contact me at (916) 255-6327, or via email <br />at Duane.White@dtsc.ca.gov. <br />Sincerely, <br />Duane <br />White <br />Duane White, P.E. <br />Project Manager <br />Sacramento Responsible Parties Unit <br />Cleanup Program — Sacramento Office <br />CC: See next page. <br />Digitally signed by <br />Duane White <br />Date: 2022.02.28 <br />09:10:10 -0800' <br />® Printed on Recycled Paper