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KLEeivF-ELDER Bright People.Right Solutions. Kleinfelder collected four soil samples (FC-1 through FC-4) from within the excavation directly from near the teeth of the backhoe bucket in an attempt to collect relatively undisturbed soil. Soil samples were collected by hand using nitrile gloves and cleaned stainless steel tubes. The soil samples were taken at depths specified by SJCEHD, with the exception of the deepest sample which was collected voluntarily. The samples were collected at depths beneath original grade at 2, 5, 7.5 and 9 feet deep. The upper two samples were collected at estimated depths near the top and bottom portions of the tank and the third sample (FC-3) was estimated to have been collected approximately 2.5 feet below bottom of the former tank. The fourth soil sample, which was put on hold pending results for the three shallower soil samples, was collected approximately 4 feet below bottom of the tank. Two soil stockpiles were generated with an estimated volume between 10 and 15 cubic yards (Photograph 5, Plate 4). The smaller stockpile, estimated at two to three cubic yards was from soil immediately around the former UST and the larger stockpile was generated from the remaining soil excavated while obtaining the FC soil samples. The two stockpiles were divided roughly into four quadrants and a discrete soil sample was collected from each quadrant. The stockpile soil samples were collected at depths of 1'/2 to 2 feet below the surface or sides of the stockpile. Soil samples from the stockpiles were collected by slide hammering a cleaned 2-inch diameter by 6-inch long stainless steel tube into the soil. The four discrete soil samples from each stockpile were combined into a single 4:1 composite by the analytical laboratory prior to analyses. Sample Collection and Handling The stainless steel sampler and sample tubes were cleaned prior to use with a Liquinox® (laboratory-grade detergent) wash followed by a potable water and distilled water rinse. The stainless steel tubes used for collecting the samples were then sealed following collection of the sample with Teflon° sheeting and tight-fitting plastic end caps. After collection, the soil samples were labeled, and immediately stored in an iced cooler pending transportation to the analytical laboratory. The soil samples were transported under chain-of-custody control to Kleinfelder's office and then transported by courier in a chilled container to California Laboratory Services (CLS) of Rancho Cordova, California. The chain-of-custody form was signed by each individual who handled the samples, including the sampler and the receiving employee at CLS. CLS is certified by the State of California to perform the analyses requested. The samples were analyzed on a standard 1-week turnaround schedule for completion. Soil 125819.E01/ST013RO732 Page 4 of 10 December 11, 2013 Copyright 2013 Kleinfelder