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DURAY SILVER MINES <br /> • Transfer of reagents (C-8) <br /> • Filling of the 1,000 gallon Unleaded Tank (C-1) <br /> • Filling of the 10,000 gallon Diesel Tanks (C-1, C-9) <br /> • Filling of the Backup Generators (C-5 & C-9); and <br /> • Filling of mobile equipment. <br /> Buried piping related to hydrocarbon storage does not exist at this facility. All above ground <br /> piping and valves are inspected monthly which also includes appurtenances, expansion joints, <br /> valves, catch pans and pipeline supports. Observations are recorded during the monthly <br /> inspections. <br /> Most above ground piping is located within areas that are not accessible to vehicular traffic. <br /> Warning signs are posted at appropriate locations to prevent vehicles from damaging above <br /> ground piping and appurtenances. <br /> Part 5: Discharge Response (40 CFR 112.7(a)(5)) <br /> This section describes the response and cleanup procedures in the event of a hydrocarbon <br /> discharge. The uncontrolled discharge of hydrocarbon to ground water and surface water is <br /> prohibited by state and federal laws. Immediate action must be taken to control, contain and <br /> recover discharged product. Depending on the volume and characteristics of the material <br /> release, the operator has a defined spill response role as either"Minor" or "Major" spill <br /> response. <br /> Discharge response and reporting applies to all areas of the Revenue Mine, including <br /> underground. <br /> 5.1 Minor Spill Response <br /> A 'Minor" discharge is defined as one outside of secondary containment not affecting ground <br /> water or surface water and can be safely controlled or cleaned up by site personnel. <br /> If the spill is less than 10 gallons, not affecting ground water or surface water, prevent further <br /> material from being spilled. When the spill is contained, notify the Environmental Specialist and <br /> Site Manager. <br /> If greater than 10 gallons and not affecting ground water or surface water, then notify the Site <br /> Manager and/or other Senior Management who will notify the CDPHE Office of Emergency <br /> Preparedness and Response. <br /> Spill Prevention Control and Countermeasure Plan 26 1 P a g e <br />