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URS <br /> February 28, 2003 <br /> Mr. Frank Lopez <br /> Department Of Toxic Substances Control <br /> 8800 Cal Center Drive <br /> Sacramento, California 95826-3200 <br /> Subject: Addendum to Preliminary Endangerment Assessment Work Plan for <br /> Lockeford Elementary School Expansion Site <br /> 19555 North Tully Road <br /> Community of Lockeford, San Joaquin County, California 95237 <br /> URS Job No. 17325405 <br /> Dear Mr. Lopez: <br /> URS Corporation (URS) has prepared this letter for the California Department of Toxic <br /> Substances Control (DTSC, Client) as an addendum to the subject work plan, dated 31 January <br /> 2003. This letter was prepared in accordance with the scope of work set forth in DTSC's Work <br /> Order No. 1-501-1.0-104292-27, which was issued to URS under Agreement No. 02-T2501. <br /> This letter addresses your letter of 28 February 2003, which forwarded review comments on the <br /> subject work plan provided by: <br /> • Thomas F. Booze, Ph.D., DTSC Staff Toxicologist, Human and Ecological Risk <br /> Division, in a 19 February 2003 memorandum to you; and <br /> • Mike Finch, DTSC Staff Geologist, in a 13 February 2003 electronic mail message to <br /> you. <br /> This letter also addresses review comments provided by Gail E. Jones, U.S. Environmental <br /> Protection Agency (USEPA) Region 9 Environmental Scientist, Quality Assurance Office, in a <br /> 19 February 2003 memorandum to Jim Hanson, Project Manager, USEPA Region IX <br /> Brownfields Team. The memorandum was forwarded to us by DTSC. <br /> The comments of the above individuals are addressed in turn below. <br /> COMMENTS OF THOMAS BOOZE,DTSC STAFF TOXICOLOGIST <br /> Mr. Booze's comments are summarized in italics and addressed in regular font below: <br /> URS Corporation <br /> 3445 West Shaw Avenue, Suite 101 PAPEA Lockeford\Work Plan\Lockeford WP Addendum.doc <br /> Fresno, CA 93711 <br /> Tel: 559.271.1093 <br /> Fax: 559.271.1379 <br />