Document 3JEnK0gVvJbmRbExZJkqXLOXJ

January 16, 1992 Ms. Barbara J. Pope Southwestern Refining Company, P.0. Box 9217 Corpus Christi, Texas 78469 Inc. Dear Ms. Pope: Enclosed is written confirmation of the analytical results for the (2) rush bulk samples (Reference Numbers 92061 and 92062) delivered to our laboratory on Thursday, January 16, 1992. All analyses were performed at our lab with a Nikon Labophot-Pol microscope. Standard oil immersion and optical staining techni ques were used for asbestos identification. The Interim Method for the Determination of Asbestos in Bulk Samples (40 CFR Part 763, Appendix A, Subpart F) was used. Envirotest, Inc. is a National Institute of Standards and Technology NVLAP-accredited laboratory (#1595) for asbestos analysis. The following analytical results pertain only to the sample(s) analyzed. Envirotest, Inc. assumes no responsibility for whether the sample(s) accurately represent the material in question nor for any subsequent use or interpretations of the analytical results. If you have any questions regarding this report, please call. We appreciate the opportunity to be of service to you. Sincerely, Stuart C. Williams, Ph.D Chief Executive Officer Envirotest, Inc. SCW:111 SWRf/Asbestos 0912 IB 003582 10400 WESTOFFICE DRIVE, #110, HOUSTON, TX 77042 713-782-4101 Envirotest, Inc. Laboratory Bulk Sample Analysis Report 10400 WESTOFFICE DRIVE, SUITE 110, HOUSTON, TEXAS 77042 713/782-4101