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Stormwater Management Plan <br />Richardson geranium, mariposa -lily, timothy, wild rose, scarlet gilia, gray's fern -leaf lousewort, <br />rosy paintbrush, porter's lovage, and western wallflower. Disturbed areas exhibit: curlyleaf dock, <br />common mullein, yellow sweetclover, cheatgrass, and tumble mustard. Currently all areas <br />proposed to support mining activities (benches, roads, buildings, impoundments) have little or no <br />vegetative cover. <br />6. Potential pollution sources: Mine activities and features are identified on the attached Site Map <br />(see Attachment U-3, Figure U-1). The following table provides a general description of each <br />potential source. <br />Fuel Storage and Chemical Storage, May Day Idaho Mine Complex <br />Frequency <br />Activity <br />Containment <br />Once a week <br />Fuel delivery: 500 -gallons <br />Diesel is stored in 500 gallon tank <br />diesel; 250 gallons gasoline <br />within secondary containment equal <br />will be delivered to the <br />to or greater than 750 gallons <br />Base of Operation <br />conveyed by piping to the generator. <br />(See Exhibit C6.10). Gasoline is <br />stored in a vented steel tank with <br />secondary containment. Liquids <br />that collect in the secondary <br />containment will be pumped into <br />drums for off-site disposal <br />Once every 30 <br />Chemical delivery will be <br />Chemicals to be used on site will <br />days <br />delivered to the Base of <br />include paints, aerosols, lubricant <br />Operation <br />oils, and antifreeze. All chemicals <br />will be stored and locked in a <br />dedicated chemical Zircon sealed <br />storage units and a secondary <br />containment structure. <br />a) Truck haulage - to control fugitive dust, speed limits of 15 miles per hour for haul trucks will be <br />posted to limit road dust emission; <br />b) BMPs will be inspected monthly during mining operations (see Inspection and Maintenance <br />section for more details); <br />c) Road maintenance will be routinely conducted to maintain BMP structures, and road grades; <br />d) As required, regulated materials will be transported by CDOT and DOT approved vendors. <br />7. Non-stormwater discharge locations: <br />Sunrise Mining, LLC <br />Revised August 9, 2017 <br />Page 7 of 30 <br />