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From: Inga Olson <olsoning@yahoo.com> <br /> Reply-To: Inga Olson <olsoning@yahoo.com> <br /> Subject: March 18 Public Workshop in Tracy: <br /> Contamination from Weapons Test Explosions <br /> To: mfries@lmi.net, jscully@recordnet.com <br /> Pit 7 <br /> Complex <br /> When: 6:30 p.m. , Thursday, March 18th, 2004 <br /> Where: Tracy Community Center, 300 East 10th <br /> Street <br /> Who: Presentation by DOE/LLNL on Superfund Plans <br /> for <br /> Cleanup of <br /> Radioactive <br /> and Toxic Pollution at the Pit 7 Complex; <br /> Additional <br /> Commentary by <br /> Tri-Valley CAREs <br /> Why: Opportunity for the community obtain <br /> information <br /> and to insist on <br /> an <br /> adequate cleanup <br /> Located at the Livermore Lab's site 300 in Tracy, <br /> the <br /> Pit 7 Complex <br /> encompasses over 3,200 acres and has operated <br /> since <br /> 1955 for use in <br /> weapons <br /> explosives experiments on seven outdoor <br /> gravel-covered <br /> firing tables. <br /> Firing tables are where. nuclear bomb prototypes <br /> were <br /> (and still are) <br /> detonated, using materials like Uranium 238 in <br /> place <br /> of the plutonium <br /> cores. <br /> Primary contaminants of concern include <br /> radioactive <br /> tritium, PCBs, <br /> Furans <br /> and Dioxins, Uranium 238 and high explosives <br /> compounds. It was reported <br /> that 22, 670 curies of tritium were used at site <br /> 300. <br /> One curie equals <br /> 37 <br /> billion radioactive disintegrations per second. <br /> Livermore Lab has <br /> identified 12 pollution release sites within the <br /> Pit 7 <br /> Complex. <br /> The major areas of contamination include: three <br /> separate groundwater <br /> tritium plumes, three separate groundwater Uranium <br /> 238 <br /> 2 <br />