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Department of Toxic Substances Control T <br /> N <br /> Edwin F. Lowry, Director <br /> 1011 N. Grandview Avenue <br /> Winston H. Hickox Glendale, California 91201 Gray Davis <br /> Agency Secretary Governor <br /> California Environmental <br /> Protection Agency <br /> MEMORANDUM <br /> TO: Mike Vivas, P.E. <br /> Department of Toxic Substances Control <br /> 8800 CalCenter Drive <br /> 2nd Floor <br /> Sacramento, CA 95826-3200 <br /> FROM: Riz A. Sarmiento, Ph.D. ; <br /> Staff Toxicologist ,t�/ <br /> Human and Ecological Risk Division (HERD) <br /> DATE: August 6, 2002 <br /> SUBJECT: RESPONSE TO COMMENTS ON WORKPLAN ADDENDUM FOR <br /> INDOOR AND AMBIENT AIR INVESTIGATION OF THE GUILD <br /> PROPERTY AND VICINITY, CITY OF LODI AREA OF <br /> CONTAMINATION, LODI, CALIFORNIA <br /> PCA: 11050 Site Code: 100561/00 <br /> Documents Reviewed <br /> The Human and Ecological Risk Division (HERD) reviewed the Revised Workplan <br /> Addendum for Indoor and Ambient Air Investigation of the Guild Property and Vicinity <br /> (6/18/02) for the City of Lodi Area of Contamination. The scope of the review is to <br /> ascertain whether the comments provided by HERD on December 13, 2002 were <br /> adequately addressed. <br /> Background <br /> HERD reviewed and provided comments on the Workplan Addendum that discussed the <br /> technical approach for collecting additional indoor and ambient air data at the above- <br /> mentioned site. HERD's comments pertained to the assumptions that were applied in <br /> evaluating the potential risk associated with the chemical concentrations that were <br /> initially detected. HERD also indicated that a wind rose should be presented in order to <br /> determine the appropriateness of the ambient air sample locations. Remaining <br /> The energy challenge facing California is real. Every Californian 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 www.dtsc.ca.gov. <br /> ® Printed on Recycled Paper <br />