ARCHIVED REPORTS PHASE II ENVIRONMENTAL SITE ASSESSMENT REPORT

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LPhase II Environmental Site Assessment Report-Executive Summary 1025 East Main Street,Stockton,San Joaquin County,Califomia Page 3 The coordinates of the soil sampling locations were documented by a hand held global positioning system (GPS). A Condor representative collected the soil samples at the Site on December 11 and 12, 2007. The soil and groundwater boring location coordinates are summarized in Table 1. The soil was L sampled from the former Western Pacific railroad tracks on the east side of the property, around the perimeter of the train depot, and from the former rail spur areas on the western portion of the Site(Figure 3, Appendix A). The soil samples were collected from the surface approximately 0 to 6 inches bgs, and approximately 1.0 to 3.0 feet bgs from the subsurface. Table 1—Soil and Groundwater Boring Location Coordinates Sample Latitude Longitude IDs i B1 37.95565 -121.27776 B2 37.95488 -121.27749 B3 37.95575 -121.27716 B4 37.95500 -121.27696 Ir WP1 37.95524 -121.27702 L WP2 37.95559 -121.27712 RS1 37.95560 -121.27786 L RS2 37.95542 -121.27774 RS3 37.95514 -121.27780 L RS4 37.95559 -121.27748 L Notes:Coordinates provided in North American Datum(NAD)of 1983. Sample ID: B=Boring,WP=Western Pacific Railroad(east property),RS=Rail Spur(west property). 3.3 GROUNDWATER SAMPLING LFour direct push borings were advanced into the groundwater for the purpose of collecting groundwater samples. The approximate locations of the borings are shown in Figure 3, Appendix A. One groundwater sample was collected from each boring. The groundwater samples were collected using a push-type groundwater sampler. The groundwater sampler and associated push rods were thoroughly cleaned before each sample was collected using a solution of laboratory-grade, non-phosphate detergent, and double rinsing with deionized water. The groundwater sampler has a sealed, retrievable stainless steel screen. The groundwater sampler was pushed in a closed position to the desired sampling interval. The groundwater sampler's push rod was retracted to expose the inlet screen. Groundwater flowed f hydrostatically from the formation into the inlet screen. A groundwater sample was retrieved from within ` the screen with a 3/8-inch diameter stainless steel bailer. The bailer was decontaminated by washing with a hot water pressure washer and then double rinsed with de-ionized water prior to use at each sample location. Each of the four groundwater samples were discharged directly from the bailer into laboratory- supplied sample containers. The four sample containers were sealed and labeled for sample identification and placed in a cooler chilled with ice. Upon completion of the borings and sampling, the borings were grouted to surface with neat cement. tr �s Lt.l� CONDO