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1 <br /> C711RA V SILVER MINES <br /> • Verify the proper functioning of fill level indicators and overfill prevention systems; <br /> • Observe berms for signs of deterioration or discharges of oil; <br /> • Check spill kit inventories; and <br /> • Check all secondary containment for damage and indication of container leakage. <br /> All concerns and indications of required maintenance are immediately reported to the <br /> Environmental Department. Pooled oil is removed immediately upon discovery. Repairs and <br /> other maintenance must be conducted as soon as possible. Written monthly inspection records <br /> are signed by the inspector and will be maintained in a central location for a period of 5 years. <br /> Monthly inspections are recorded and signed by the inspector using the Fulcrum App for data <br /> collection. <br /> 3.6.3 Annual Inspection <br /> OSMI personnel will conduct a comprehensive inspection annually that will replace a regular <br /> monthly inspection. The annual inspection is preferably conducted after a storm event. The <br /> Storm Water Management Plan also conducts inspections of the drainage control measures <br /> that complement the SPCC Plan and help prevent a discharge to Sneffels Creek. <br /> Written monthly inspection records are signed by the inspector and will be maintained in a <br /> central location for a period of 5 years. <br /> 3.6.4 Periodic Integrity Testing <br /> Any tank installed will receive an inspection to verify the tank is in good working order during <br /> initial filling. <br /> The 10,000 gallon double-walled diesel tank (C-1) was installed new in 2012 and the 1,000 <br /> gallon double walled unleaded tank was installed new in 2021. For this reason, a Steel Tank <br /> Institute (STI) Standard testing for the Inspection of Aboveground Storage Tanks, SP-001 (2005 <br /> version) will not be required until March 2027 for the 10,000 gallon tank and 2036 for the 1,000 <br /> gallon tank. <br /> 3.7 Personnel,Training and Discharge Prevention Procedures (40 CFR 112.7(f)) <br /> The Environmental Specialist is the facility designee and is responsible for hydrocarbon <br /> discharge prevention, control and response preparedness activities at this facility. <br /> Spill Prevention Control and Countermeasure Plan 17 1 P a g e <br />