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L' Ln", SlirShaw ErMironmental, December 15, 2008 Mr. Jim La Porte AT&T Environment, Health and Safety Via Email — j17454@att.com C7 Shaw Environmental, Inc. 4005 Port Chicago Highway Concord, California 94520-1120 Phone: 925.288.9898 Fax: 925.288.0888 Shaw Project No. 129033.47 Subject: Letter Report for the Collection and Analysis of Two Sump Water Samples, AT&T Facilities, 1918 M Street and 1520 20`h Street, Bakersfield, California Dear Mr. La Porte: Shaw Environmental, Inc. (Shaw) is pleased to present the results of the samples collected from the drummed water at the two above-mentioned AT&T facilities in Bakersfield, California. According to AT&T, the water was generated during testing of the on-site diesel underground storage tank (UST) sumps. A total of four drums containing sump water are located at the M Street facility, and two drums at the 20`h Street facility. The samples collected by Shaw were analyzed for hazardous waste characteristics to identify appropriate disposal alternatives in accordance with the California Code of Regulations (CCR) Title 22, Chapter 11, Article 3, Section 66261.20 to 66261.24. A summary of the field activities and analytical results is included in the following sections. Water Sampling Activities On December 2, 2008, Shaw personnel visited both sites to collect samples of the drummed sump water. In order to collect a representative sample, a bailer was lowered into each of the drums, with a portion of the water then transferred to the appropriate laboratory -supplied container. After collection, the sample containers were then labeled, sealed, and placed in an insulated chest with ice pending transport to the analytical laboratory. A copy of the chain -of - custody document is included in Attachment 1. Sample Analyses and Results The two water samples were submitted to McCampbell Analytical, Inc., an ELAP-certified laboratory located in Pittsburg, California, for analysis for constituents associated with diesel fuels. This analysis included total recoverable hydrocarbons as diesel (TPH-D) by EPA method 8015M, volatile organic compounds (VOCs) by EPA method 8260, semi -volatile organic compounds (SVOCs) by EPA method 8270, Title 22 California Assessment Manual CAM/CCR Metals by EPA method 200.8, and a 96 -hour CA Title 22 Acute Fish Bioassay by Department of Fish and Game (DFG) method CA DFG (Polinsi & Miller). The samples were also analyzed for reactivity, corrosivity and ignitability (RCI) characteristics in accordance with SW -846, Chapter 7 and for pH by EPA method 150.1.