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1 January 7, 1994 Wright Environmental a Services, Inc. The City of Tracy 520 Tracy Blvd. Tracy, CA 95376 Attn: Mr. Paul Verma Re: Tracy Inn, 24 West 11th Street, Tracy, CA Tank Removal Report WES Project 4041-T Dear Mr. Verma, Wright Environmental Services, Inc. (Wright) is pleased to provide you with this summary report of activities associated with the recent excavation and removal of what was believed to be a 440 gallon fuel-oil tank from below the sidewalk at the above referenced site. Drawing 1 identifies the location of the tank and references a cross street in the vicinity. Permits Wright completed underground storage tank closure permit application forms provided by San Joaquin County, Public Health Services-Environmental Health Division (PHS-EHD) prior to beginning excavation work. The closure permit application review process was expedited by Mr. Bill Snavely of PHS-EHD, permits were approved on October 22, 1993. A copy of the approved permit is enclosed in Appendix A. The city of Tracy waived excavation permit requirements. Tank Removal, Disposal and Excavation Prior to excavation work, residual liquids found in the tank were pumped and \, the tank was rinsed with water. The residual liquid and the rinsate were recycled by Petroleum Recycling Corp. of Patterson, Ca., as non-RCRA, Hazardous Waste. A copy of the October 21, 1993 Hazardous Waste Manifest is enclosed in Appendix B. The tank was excavated on October 22, 1993. As directed by the City of Tracy all soil from the excavation was loaded on transfer trucks and delivered to the City of Tracy, Land Treatment Facility located at the Tracy Airport. After excavation work was complete a scaled drawing was made of the site. Drawing 2 identifies the specific location of the tank (as it was found) and other pertinent site information. The site was then secured with 6 ft. chainlink fencing around the excavation perimeter. Prior to the removal of the tank, it was purged with Carbon Dioxide (dry ice) at a rate of 15 pounds per 500 gallons of volume. The tank was removed from the site on October 23, 1993 and transported to Triangle of Sacramento for proper recycling/disposal as documented by the underground storage tank disposition tracking record enclosed in Appendix C. Sample Collection and Analysis After removing the tank on October 23, 1993, soil samples were collected. The sample location, identification number, depth below top of sidewalk surface and collection time were documented on each sample and a proper chain of custody. The samples were immediately capped and placed in a chilled ice chest for transportation to Sparger Technology, Inc. of Sacramento, a State certified analytical laboratory. As directed by Mr. Bill Snavely PHS-EHD, the soil samples required analysis for unknown fuels. The samples were analyzed for Total Petroleum Hydrocarbons as Gasoline (TPH-G), Total Petroleum Hydrocarbons as Diesel (TPH-D), Benzene, Toluene, Ethyl Benzene, and Xylene (BTEX), Total Lead (Pb), and Ethylene dibromide (EDB). 1. Enclosed in Appendix D is a copy of the analytical report for the collected soil samples and the Chain of Custody. 1961 Hill View Way • Tracy, California 95376 Telephone (209) 833-0758 • Fax(209) 832-5152