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Final Release LLNL Site 300 (USDOE) <br /> Appendix D: Contaminant Releases <br /> Table D-1: Contaminant Releases at Site 300 by Operable Unit <br /> Location Contaminant Source.. Contaminant Media Off-Site? <br /> Contaminated <br /> OU-1: GSA Operable Unit <br /> Eastern GSA Leaching from disposal trenches VOCs Subsurface Yes <br /> soil/rock, (groundwater) <br /> groundwater <br /> Central GSA Dry well discharges, drum rack VOCs Soil, soil vapor, Yes <br /> spills, surface spills,bldg groundwater (groundwater) <br /> washdowns <br /> OU-2: Building 834 Operable <br /> Unit <br /> Bldg 834 Complex Approx. 550 gal released via: VOCs, nitrate, Subsurface No <br /> surface spillage,pump leakage, silicone oil soil/rock, <br /> discharge from septic system, groundwater <br /> building wash-down discharges <br /> OU-3: Pit 6 Operable Unit <br /> Pit 6 Leaching from land fill VOCs, tritium, Subsurface No <br /> nitrate, perchlorate soil/rock, <br /> springs, <br /> groundwater <br /> D-1 <br />