SITE INFORMATION AND CORRESPONDENCE

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<#*> ETIC ENGINEERING NOV EDD November 9, 2006 FNVjRoN 3 Za06 RV�FAC6STy Mr. Michael J. Infurna Jr., Senior REHS San Joaquin County Environmental Health Department 304 East Weber Avenue, Third Floor Stockton, CA 95202-2708 Clarification of Proposed Soil Vapor Investigation Former Kilpatrick's Bakery, 1717 South Center Street, Stockton, California Dear Mr. Infuma: On behalf of Sara Lee and PSC Environmental Services, I am submitting this letter pertaining to the proposed subsurface investigation for the former Kilpatrick's Bakery site located at 1717 South Center Street in Stockton, California (Figures 1 and 2). The purpose of this letter is to clarify the scope of soil vapor sampling presented in our Revised Work Plan for Post- Remediation Subsurface Investigation (the "Work Plan"), dated September 27, 2006, and as discussed with you by telephone today. ETIC proposes to collect all soil vapor samples (SVI-A, SVl-B, SV2, SV3, and SV4), using the direct-push method. There will be no permanent installation of vapor monitoring points or traffic-boxes, as had been described in the Work Plan. After the soil vapor samples have been collected, all sampling equipment will be removed from each boring and the boreholes will be filled and sealed with neat cement in accordance with federal, state, and local requirements. Stan Melcher at the Stockton Public Works Department has indicated that the inside (western) edge of the sidewalk is the boundary of the City right-of-way and that the area between the inside edge of the sidewalk and the site building is private property. The proposed vapor sampling locations (SV1 through SV4) are shown on Figure 3. Some of the soil vapor sampling locations are situated within the right-of-way and some are near the building, on private property. We have obtained encroachment permit number 70035 with control number SSI1090B from the City of Stockton Public Works Department for drilling the temporary borings on the right-of- way. Ismael Rivera is the current owner of the site. On November 7, 2006, I informed Mr. Rivera of the planned activities on and adjacent to his site and obtained his verbal consent to proceed with the work. TEG is the C57-licensed contractor that will be performing the soil vapor investigation. We have submitted two drilling permits and two permit fees for the soil vapor investigation. One drilling permit is intended for the temporary soil vapor borings to be drilled in the City right-of- 1 2285 Morello Avenue, Pleasant Hill, CA 94523 9 Phone: 925.602.4710 • Fax: 925.602.4720 • License #624022