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Rimrock Exploration & Development, Inc. <br />J-Bird Uranium Mine/ DMO/ EPP Designated Chemical(s) Evaluations <br />5.0 DESIGNATED CHEMICAL(S) EVALUATIONS <br />Referencing the definition of "Designated Chemicals" Rule 1.1(13), no "toxic or acidic <br />chemicals will be used within the permit area for extractive metallurgical processing." <br />There are no metallurgical processes on this site. Small containers of chemicals may be <br />used for maintenance of facilities or equipment. Petroleum products will be stored in <br />volumes greater than 55 gallons, though not exceeding aggregated 1320 gallons. <br />Applicability of this section is inferred through DRMS Rule 3.1.13. This rule does <br />indicate a requirement to "Notify the Office of a spill.... including spills of petroleum <br />products, that occurs within the mined land permit area and would be required to be <br />reported to any CDPHE, National Response Center, Colorado Emergency Planning <br />Commission or any local Emergency Planning Commission." A Stormwater <br />Management Plan (SWMP) has been developed and discusses petroleum products' <br />storage on-site. Please reference the SWMP for further petroleum product evaluation <br />information. A Material Safety Data Sheet (MSDS)' for "Designated Chemicals" and <br />petroleum products will be kept on-site and at local offices. <br />"Designated Chemicals" stored on-site are expected to be the following: <br />• 2 x 500 -gallon Above Ground Storage Diesel Fuel Tanks <br />• 1 x 30 or 55 -gallon drum of Motor Oil <br />• 1 x 30 or 55 -gallon drum of Hydraulic Fluid <br />• 1 x 30 or 55 -gallon drum of Transmission Fluid <br />• 1 x 30 or 55 -gallon drum of Antifreeze <br />• 5-gallon bucket of Grease <br />• Individual 0.5 gallon Containers of Cleaning and Maintenance Products <br />As per Rule 1. 1(1 4)(b) and HB-08-1161, uranium is "a toxic forming material that will be <br />exposed or disturbed as a result of mining operations." The toxicity potential associated <br />with the J-Bird mine-related uranium was evaluated with the use of standard analysis <br />techniques as requested by DRMS. Two samples of J-Bird mine uranium-bearing <br />materials have been collected and analyzed using Synthetic Precipitate Leachate <br />Procedures (SPLP). A thorough presentation and analysis of the data is provided in <br />Section 14; and summarized herein since the uranium element would be considered a <br />designated chemical. Conclusions were drawn from the deposition materials SPLP <br />analysis. <br />9