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CLOSURE REPORT FOR UNDERGROUND STORAGE TANK 8*44-D1U1 PERSONAL PROTECTION EQUIPMENT(PPE) DISPOSAL: I X 1 Not Applicable. (Used PPE did not require special handling or disposal) The PPE was transported by: N/A The PPE was disposed of as: N/A. Date: N/A Name and address of disposal facility: N/A. [N/A] LLNL Hazardous Waste Requisition and Uniform Hazardous Waste Manifest"TSD Facility to Generator"copy for the used PPE enclosed. CLOSURE REPORT CONCLUSIONS: • At the time of the July 27, 1994 removal of the 834-D1U1 tank the smell of diesel fuel was noted in the excavation and in the excavated materials. Mr. Bill Snavely San Joaquin County Public Health Services stated a belief that the evidence of diesel fuel in the soil below the tank was associated with the previously detected diesel fuel in groundwater in the nearby monitoring well Installed in the shallow perched aquifer in the Building 834 area As a result Mr. Snavely informed us that this site project was to be transferred to Ms Diane Hinson, Supervising Environmental Health Specialist in the Site Mitigation and Local Oversight Program, San Ioaquin County Public Health Services Interactions with Diane Hinson and completion of the project are described in the CORRECTIVE ACTION REPORT beginning on page 7 • Because the tank system has consistently tested leak tight the suspected cause of the contamination is historic tank overfilling • Based on the visual evidence and smell of diesel fuel in the excavation and excavated materials at the Building 834 tank closure site an Underground Storage Tank Unauthorized (Leak)/Contamination Site Report for tank system 834-D1U1 was completed and submitted to Doug Wilson San Joaquin County Public Health Services, on August 3, 1994. • The tank closure activities were completed according to the 834-DIU1 Closure Plan and the requirements of Bill Snavely. The subsequent corrective action activities were completed in accordance with the agreement with Diane Hinson of the Site Mitigation / Local Oversight Program. The12roject has been completed. LLNL does not plan further closure or remedial activities at the tank closure site. • The stockpile soil from the UST 834-DlUl excavation has not been remediated nor has a method of proper disposal been determined Ship"ing documents and/or manifests will be forwarded to your office when they become available. [ X ] Photographs of tank closure activities are enclosed as Appendix D. [N/A] A copy of the State Water Resources Control Board UST Permit Application Form B shall be submitted to your office within 30 days of the submittal of this report. [N/A] A copy of the State Water Resources Control Board UST Permit Application Form B was submitted to your office with the UST Closure Plan. • The Form B was completed by Mr. Snavely.