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Gray Davis Governor 6640- ,Allk California Regional Water Quality Control Board Central Valley Region Robert Schneider, Chair Sacramento Main Office Internet Address: http://www.swrcb.ca.gov/rwqcb5 3443 Routier Road, Suite A, Sacramento, California 95827-3003 Phone (916) 255-3000 • FAX (916) 255-3015 29 January 2003 JAN 30 2003 ENVIRONMENT HEALTH PERMIT/SERVICES Ms. Frances Schmiedt Mr. Alan Schmiedt Schmiedt Soil Service Incorporated 20696 South Main Street Manteca, CA 95337 Mr. W.J. Clark Mr. David Mathews Tri-Ag Services, Incorporated P.O. Box 291 Manteca, CA 95336 REVIEW OF WORK PLAN, SCHMIEDT SOIL SERVICE, MANTECA, SAN JOAQUIN COUNTY We have reviewed the 17 January 2003 Revised Work Plan for the Schmiedt Property (Work Plan) submitted by Kleinfelder on behalf of Ms. Frances Schmiedt for the former Schmiedt Soil Service Incorporated and Tri-Ag Services, Incorporated (Tri-Ag) at 20696 South Main Street in Manteca (site). The Work Plan proposes to conduct two phases of work. The first phase of work includes reviewing regulatory agency and other records, obtaining historical records, doing a site reconnaissance, and submitting the findings in a report. Based on the findings and approval of recommendations, the Work Plan proposes the second phase of work to include getting applicable permits for soil and groundwater sampling, performing sampling, and reporting the results. The Department of Toxic Substances Control (DTSC) has also reviewed the Work Plan, and its comments are included. The following comments are specific to the first phase of proposed work: In Section 2.0, the Work Plan references that neither party involved with Tri-Ag has been contacted, although attempts have been made. The parties involved with Tri-Ag should be contacted during the field activities to help identify areas where soils may be contaminated by previous site activities. Additionally, information on the operational history and changes in the property boundary can probably be obtained from these parties. Contacting these personnel can provide valuable information that will be useful during scoping of the Phase II soil and groundwater investigation. In Task 2.0, the Work Plan references that interviews will be limited to a maximum of two key personnel. You should interview all available parties that may be able to provide California Environmental Protection Agency gs) w, Recycled Paper The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. 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/rwqcb5 Winston H. Hickox Secretary for Environmental Protection RECENE