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kn KLEINFELDER ' For additional details regarding g g soil sampling and handling methodology please refer to the section below. ' Based onrelimin p ary soil sampling results, additional soil samples were collected on December ' 16, 2004 at location TPI using the same equipment, operator and sampling methodology as previously described for the original test pits. A deeper soil sample was collected at location TP- 1 at depths of 9 and 15 feet bsg. A lense of discolored soil approximately 6-inches thick was ' noted at approximately 6 feet bsg. Based on the former sampling depth and location, it appeared the base of the former TPI soil sample (TP 1-4') was likely advanced into a portion of this lense. Test Pit 1 was advanced to depths of 9 and 15 feet bsg, and two additional samples were ' collected at these depths. Additional soil discoloration and odor was not noted at these depths or below the discolored lense noted at approximately 6 feet bsg. Sample Collection and Handling The stainless steel hand auger, sampler and sample tubes were cleaned between locations with a ' Liquinox® (laboratory-grade d etergent) w ash f ollowed b y a p otable w ater and d istilled w ater 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, logged on a chain-of-custody form, and immediately stored in an iced cooler pending transportation to the analytical laboratory. ' The soil samples collected on November 30, 2004 were transported under chain-of-custody control to Kleinfelder's office and then transported by courier in a chilled container to Alpha Analytical Laboratory, Inc. (Alpha) of Sparks, Nevada. The chain-of-custody form was signed ' by each individual who handled the samples, including the sampler and the receiving employee at Alpha Analytical. Alpha is certified by the State of California to perform the analyses requested. The samples were analyzed on a standard 10 working day turnaround schedule for ' completion. The four discrete soil samples collected at each stockpile were requested to be composited by Alpha. Based on a requested rush turn around time, the two samples collected on December 16, 2 004 were s ubmitted t o a l ocal 1 aboratory, P recision E nviro-Tech o f S tockton, ' California. Sample handling was the same as described above, only Kleinfelder transported the samples in a ice chest directly to the laboratory the same day as samples were collected. ' ANALYTICAL RESULTS A.total of nine soil samples, seven discrete and two four point composite samples collected on November 30, 2004 were submitted for the following analyses: • Total Purgeable Petroleum Hydrocarbons (Gasoline Range) [TPH-G] by EPA Method 8015B/DHS LUFT • Benzene, toluene, ethylbenzene, xylenes [BTEX] by EPA Method 8260B • Total Extractable Petroleum Hydrocarbons as referenced to Diesel and Motor Oil [TPH- D/TPH-MO] by EPA Method 8015B/DHS LUFT 51726/ST05R157/DH:ly Page 3 of 7 2005,Kleinfelder,Inc. February 8,2005