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Bureau of Land Management Appendices <br /> Royal Gorge Field Office DOI-BLM-CO-F020-2020-0036 EA <br /> Scale/Scale House- Operator plans to add <br /> scales and scale house near entrance to site, <br /> along access road. <br /> Fuel -Most fuel, tube, supplies and materials <br /> will be delivered to the site daily or as needed <br /> (No AST stored onsite,just small <br /> fuel/maintenance type containers. Any fuel and <br /> fluid needing onsite storage will be in <br /> modular/portable tanks,with impermeable <br /> secondary containment of adequate capacity. <br /> Materials needing storage will be in a temporary <br /> or modular unit. <br /> Waste- Sanitary facilities will be by portable <br /> toilets, re larly serviced. <br /> Obsidian is the target commodity,and occurs <br /> here in a massive,pure deposit. Its depth and <br /> full horizontal extent are unknown. Some <br /> obsidian outcrops on the surface, and additional <br /> extent of obsidian have been confirmed by <br /> d. Geology and drilling. Ore appears to occur in localized, <br /> deposit thickness discrete"domes"which have been defined N N N and consistency through drilling around the existing pit. The <br /> obsidian deposit is surrounded by rhyolite. As <br /> far as is known,the obsidian has no contact with <br /> silver deposits (hosted by the rhyolite) in the <br /> region. The overburden, above the obsidian, is <br /> inert and of variable depth. <br /> A-3 <br />