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y _ - Industrial Compliance 9838 Old Placerville Road Suite 100 Sacramento, CA 95827-3559 916/369.8971 FAX 916/369-8370 January 3, 1996 Project No. 05100469 Mr. Joel Weiss California Regional Water Quality Control Board Central Valley Region 3443 Routier Road Sacramento, California 95827-3098 Re: Project Summary and Request for Additional Schedule Extension Remediation of Lead Impacted Soil Southern Pacific Transportation Company Old Tracy Yard - Tracy, California Dear Mr. Weiss: i The purpose of this letter is to summarize project status as of the beginning of January, 1996 and to request an additional schedule extension for completion of soil excavation and disposal and submittal of a report to the Regional Water Quality Control Board - Central Valley Region (Regional Board) documenting remediation of lead impacted soil at the Southern Pacific Transportation Company (SPTCo) Old Tracy Yard in Tracy, California. PROJECT SUMMARY Terranext (formerly known as Industrial Compliance) has completed two periods of excavation and stockpiling of lead impacted soil at the Old Tracy Yard site. The third period of excavation and stockpiling of lead impacted soil is continuing. The first period of excavation/stockpiling began on July 11, 1995 and continued through July 19, 1995. Approximately 2,950 cubic yards (cy) of impacted soil was excavated and stockpiled on site during this initial phase of excavation. Analytical results (total lead) from confirmation samples collected after the first period of excavation indicated that additional excavation was necessary. The second period of excavation/stockpiling began on August 7, 1995 and continued through August 11, 1995. An additional 2,500 cy of impacted soil was excavated and stockpiled on site during this period. Analytical results (total lead) from confirmation samples collected after the second period of excavation indicated that additional excavation was still necessary in some areas of the site. The third period of excavation/stockpiling began on October 24, 1995 and is still in progress. An estimated 16,000 cy has been excavated to date during this third period. Throughout all periods of excavation, the stockpile area has been fenced and the stockpiled soil has been covered with visqueen G 469-017.1 tr/01-03-96/u/kwrigh/keydata/oldtracy/letters Denver•Phoenix•Kansas City•Dallas•Houston•Los Angeles•Sacramento•Little Rock•Knoxville t A Subsidiary of SP Environmental Systems,Inc.