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OVR4Y SOLVER MINES <br /> Part 3: Discharge Prevention — General Provisions <br /> This Plan implements measures to prevent hydrocarbon discharges during handling, use or <br /> transfer of products at the facility. Employees tasked with hydrocarbon handling have received <br /> training in the proper implementation of these measures. <br /> 3.1 Compliance with Applicable Requirements(40 CFR 112.7(a)(2)) <br /> Hydrocarbon storage containers and their locations are tabulated in Table 2.1. Storage tanks <br /> are visible on all sides and have secondary containment in excess of their capacity. Drums are <br /> not refilled with product or used over a long period of time and therefore are not at risk of <br /> failure. Totes are reused and are stored within a welded steel secondary containment structure <br /> that is closed when not in use. <br /> 3.2 Spill Reporting (40 CFR 112.7(a)(4)) <br /> Upon detection of a discharge,the discharge notification form will be completed by OSMI <br /> management in conjunction with the Environmental Department and/or the General Manager. <br /> The spill will be reported to the proper notification contacts. <br /> 3.3 Potential Discharge Volumes and Direction of Flow (40 CFR 112.7(b)) <br /> The expected volume, discharge rate, direction of flow and means of secondary containment is <br /> tabulated in Table 3.1. As shown on the Plan map, all surface drainage is northward towards <br /> Sneffels Creek through Collection Ditch #3 to Sediment Pond #3.The only potential sources of <br /> discharges are contained within secondary containment and the shop and concentrator <br /> structures,thus making discharges into the surface drainage of the site highly unlikely. <br /> Table 3.1 Potential Discharges <br /> Max.Volume Maximum Flow Secondary <br /> Event (gallons) Discharge Rate Direction Containment <br /> C-1 tank failure 10,000 Instantaneous North double wall <br /> C-3 drum failure 55 Instantaneous Cannot Leave Site spill pallets <br /> C-4 drum failure 55 Instantaneous Cannot Leave Site spill pallets <br /> C-5 tank failure 500 Instantaneous North <br /> C-6 drum failure 55 Instantaneous Cannot Leave Site spill pallets <br /> C-7 drum failure 55 Instantaneous i Cannot Leave Site spill pallets <br /> Spill Prevention Control and Countermeasure Plan 14 1 P a g e <br />