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CLOSURE REPORT FOR <br /> UNDERGROUND DIESEL STORAGE TANK <br /> 871-D1U1 <br /> BACKGROUND: <br /> Location of underground storage tank (UST) 871-DlUl at Lawrence Livermore National <br /> Laboratory(LLNL): north of Building 871 <br /> The tank supplied diesel fuel to the Building 871 boiler located in Building 871. <br /> The tank was closed and replaced by a new double-wall underground storage tank. <br /> Date the tank was removed from service: 7/21/94. <br /> Date the tank Closure Plan was submitted to San Joaquin County Public Health Services on <br /> 6/15/94. <br /> Tank Volume Dimensions Construction Date of Contents <br /> (gallons) Installation <br /> 2000 63"X 92" Single-walled 1982 Diesel Fuel <br /> Carbon Steel <br /> [X] UST 871-DlU1 approved Closure Plan Application for Underground Tank Closure <br /> Permit enclosed as Appendix A. <br /> TANK/PIPING INFORMATION: <br /> The tank contents were recovered by: Evergreen Environmental Services Date: 7Z21/94. <br /> The tank contents were transported by: Evergreen Environmental Services Date: 7/21/QA. <br /> The tank contents were disposed of as: Combustible Liquid n.o.s. (diesel fuel) Date: 7/21/94. <br /> Final disposition of the tank's content: Evergreen Oil,Inc. Date: 7/21 94. <br /> Name and address of disposal facility: Evergreen Oil, Inc., 6880 Smith Avenue, Newark, CA <br /> 94560 (510)795-4400. <br /> [ X ] Uniform Hazardous Waste Manifest "Treatment, Storage, Disposal (TSD) Facility to <br /> Generator" and LLNL Hazardous Waste Disposal Requisition copies for tank contents <br /> are enclosed as Appendix B. <br /> A representative of San Joaquin County,Mr.William Snavely,was present during tank removal <br /> activities. <br /> Method of inerting: Addition of 100 lbs.dry ice into tank. <br /> Lower explosive limit (LEL) reading or oxygen level reading within the tank prior to tank <br /> removal: 0%LEL,<1%O� <br /> Name and affiliation of the person who measured the LEL reading or oxygen level reading <br /> within the tank prior to tank removal: Dan Rodriguez(LLNL). <br /> The tank was removed by: Aronson Engineering Date: 7/26/94. <br /> Total length of aboveground piping removed: None. <br /> Total length of underground piping removed: 40 feet. <br /> Type/diameter of aboveground piping: NA. <br /> Type/diameter of underground piping: 3/4 inch copper. <br /> Any piping closed in place: [ ]Yes [X ]No <br /> Describe where the piping was closed in place,and how it was closed(e.g.grouted and capped): <br /> NA <br /> Underground concrete tank anchoring structure(s)were present: [ ]Yes [ X ]No <br /> Size and location of the concrete tank anchoring structure(s): NA <br /> Description of tank and piping condition (corrosion, pitting, holes, etc.): The tank and pining <br /> were in good condition. Photographs of the tank were taken by Richard Henry(7/26/94). <br /> The tank and piping were transported by: Erickson Inc. <br /> The tank and piping were disposed of as: Non-RCRA Hazardous Waste, Solid (Empty <br /> Containers Last Containing Diesel Fuel with associated pig ining). Date: 7/26/94 <br /> 1 <br />