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IN-SITU SOIL CHARACTERIZATION REPORT Proposed Parking Structure 1517 N. California Street Stockton, CA 1.0 INTRODUCTION This report was prepared by Condor Earth Technologies, Inc. (Condor) to describe in-situ soil characterization and investigation activities conducted on May 9 and 10, 2005, at the St. Joseph's Medical �. Center proposed parking structure (Site) located at 1517 N. California Street in Stockton, California (Figures 1 and 2,Appendix A). The purpose of the work was to evaluate the soil for chemical constituents prior to removal of the soil from the Site. The work included the advancement of 16 direct push borings ,r and the collection of soil samples for laboratory analyses. This report was prepared at the request of Catholic Health Care West(Client), specifically at the request of Terry Spring(Client's representative). All work was conducted by Condor under the supervision of a California Professional Geologist. This report includes a description of the fieldwork and laboratory analytical results, and conclusions. 2.0 DIRECT PUSH BORING FIELD PROCEDURES V This section includes a description of Site preparation activities and direct push boring procedures. 2.1 SITE PREPARATION A drilling permit application was prepared by Condor and submitted to the San Joaquin County Environmental Health Department (SJCEHD) for 16 proposed direct push borings. The proposed boring locations were marked with white paint and Underground Service Alert (USA) was notified 72 hours in advance of the fieldwork to locate and identify underground utilities in and near the work area. The SJCEHD was notified of the fieldwork schedule several days in advance. 2.2 DIRECT PUSH BORING AND SAMPLING PROCEDURES A Condor geologist was on Site to supervise the work. Prior to commencement of fieldwork, a tailgate safety meeting was held and a Site-specific Health and Safety Plan was discussed with, and presented to, all field personnel for their signatures. The investigation included the advancement of 16 direct push borings (B-1 through B-16) to collect soil samples on May 9 and 10, 2005, using a Geoprobe® boring and sampling system. The boring locations are shown in Figure 2, Appendix A. The direct push borings were hydraulically advanced using a two- inch outside diameter continuous core apparatus. The push rods were thoroughly cleaned before the boreholes were advanced using laboratory-grade, non-phosphate detergent and deionized water and double-rinsed with deionized water. Upon completion of the boring and sampling, the boreholes were backfilled with neat cement grout to surface. On the eastern portion of the Site, eight borings were advanced to a depth of approximately 12 feet below ground surface (bgs) (borings 131 through B8). On the western portion of the Site, eight borings were advanced to a depth of approximately six feet bgs (borings 139 through 1316). Soil samples were collected from approximately 3.5 to 4.0 feet and 8.5 to 9.0 feet bgs in Bl through B8, and from approximately 3.5 to 4.0 feet in B9 through 1316. Soil samples were collected from each boring using a 1.75-inch inside diameter, four-foot long core barrel fitted with a clean, single use, polyethylene liner. During the �•1� CONDOR