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The site activities are constantly monitored to determine whether there is need for individual air <br />permits. Currently (and into the future) site activity is minimal and does not require individual <br />air permits. However, in the interest of being conservative, an Air Permit Emission Notice is <br />being prepared which inventories all possible air quality impacts from the ongoing activity. This <br />notice simply identifies the site as being an active mineral mine with potential dust emission <br />sources. <br />The CDPHE stormwater program continually inspects and reviews site conditions to determine <br />whether the existing stormwater management plan is in compliance. The site maintains a <br />stormwater permit and shares the hydrologic setting information with CDPHE in order to address <br />any other possible permit condition (e.g. NPDES point discharge permit). <br />The underground conditions were reviewed by the EPA Underground Injection Control program <br />(Spring 2007). The underground water management strategies were not considered to fall within <br />the UIC definitions of injection wells. <br />(4) Designated Chemical Evaluation <br />The site activities do not require a signi:Eicant amount of designated chemical usage. An <br />inventory of the fluids currently contained on site is as follows; <br />F Three diesel fuel tanks on site totaling 1;300 gallons,. Each tank is of self enclosed tank <br />type and is approved by MSHA (stored on surface, of Level 6 pad)- - <br />A total of 50 gallons of 15W40 diesel motor oil contained in 5 gallons plastic buckets <br />• A total of 50 gallons of hydraulic fluid contained in 5 gallons buckets <br />15 gallons of anti freeze, and <br />• 15 gallons of rock drill oil, (all in plastic-buckets). <br />the lubricants are stored in a large plastic vat,to prevent;spilla,ge (self enclosed). (stored on <br />surface of the Level 6pad). Spraypaint cans and spray=lubricants are stored in vented steel <br />cabinet (stored 'on surface of Level 6 pa(1). Figure B.2a and B.2b were created to depiefthe <br />--- <br />kocation of fluids storage, the piezometer wells, explosives etc.. <br />This fuel tank is stored within the foundation area where the crusher was housed and has spill <br />containment features immediately adjacent. All drilling lubricants/oils are contained within the <br />pad storage buildings. <br />I'he explosives magazines arc of mobile',type, made of steel-'and approved by the ATFE agency <br />as well as by Mskk There are two magazines, one for the detonators and one for the blasting <br />agents. They are'both located on the Sri level pad (Photo provided). The first one is located _100 <br />North of the third level alit aril the "second one 50 A-further North Both magazines are <br />isolated with`a dirt berm for safetypurM"3se. Note. The explosives would definitely be stored <br />underground while in production: <br />18