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November 26th 2013 PenneCore Drilling operated a dual track-mounted GeoProbe® 7822DT push rig and collected soil samples from the subsurface from all eight boring locations beginning at 10:00 AM. A Site-specific Health and Safety plan was prepared and a field safety meeting was held among field personnel and drilling crew prior to the start of drilling. Senior Inspector Johnny Yoakum from SJCEHD was onsite to observe the grout refill. All boreholes were initially penetrated using a punch bit driven by direct-push drill rig. Direct-push drilling rig was then mobilized to advance boring at each borehole location. Soil samples were collected using a 2-foot long by 1.5-inch diameter sampler with a 2-foot long acetate liner and sampling point. The sampler was then advanced by the direct-push drill rig using 4-foot long by 1.25-inch diameter hollow rods with the inner rods in place. At approximately 1 foot above the desired sampling depth, an inner rod was removed and the sampler was advanced to the desired sampling depth to allow undisturbed soil to enter the sampling liner. The sampler was retrieved from the subsurface and the soil-filled liner is removed. Each acetate liner was cut using a 1-inch diameter polyvinyl chloride (PVC) pipe-cutter. The lower half of the liner was capped on both ends with Teflon block and plastic caps. The capped liners were labeled for identification and immediately placed in an iced cooler. The soil in the upper half of the cut acetate liner was visually inspected for discoloration, monitored for odors, classified in accordance with the Unified Soil Classification System, placed in a sealable plastic bag, and field-screened with a photoionization detector (PID). ENCON's field technician monitored if soil samples exhibited any odor, discoloration, or indicators suggesting the presence of elevated volatile organics concentrations. Boring logs are included in Appendix D. The collected samples were labeled with the boring number, the sample number (the samples were numbered sequentially with increasing depth from the top for each boring), and the sampling depth. Care was taken throughout to avoid contamination of both the inside and the outside of the sample container and its contents. All collected soil samples were preserved in ice chest with ice to keep 4 degrees Centigrade sample preservation temperature until the shipment of samples on the same day of sample collection to a State Certified Hazardous Waste Laboratory, American Scientific Laboratories, for analysis. U.S. Environmental Protection Agency approved chain-of-custody records were kept to track the possession of samples from the time they were taken in the field until the time they were analyzed. 4.3 LABORATORY ANALYSIS All soil samples were dropped off at Accutest Laboratories (AL) for chemical analysis. ASL is a State of California Certified laboratory. The person collecting the soil samples initiated Chain-of-Custody documentation. Selected soil samples were analyzed as follows: • Selected soil samples were analyzed for TPH-CROs (total petroleum hydrocarbons as gasoline range organics), TPH-DRGs (total petroleum hydrocarbons as diesel range organics), TPH- OROs (total petroleum hydrocarbons as oil) using EPA Method 8015; BTEX (benzene, toluene, ethylbenzene, and total xylenes), and MTBE (methyl tertiary butyl ether) using EPA Method 82606; RCRA Eight Metals using EPA Method 6000/7000 series. • Analyses of samples were determined by the location of the borings and suspected contaminants of concern in particular areas of concern. See table in section 4.2 of this Report. • The Laboratory Analysis Report of the soil samples is included in Appendix E. Encon Solutions, Inc. -11-