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Preventive Maintenance <br />Daily inspections of all storage and activity areas will be conducted as a part of the operation <br />once operational. Comprehensive inspections are completed as required based on activity at the <br />site (please see Section 4 for additional details). Inspections will include at a minimum the <br />following: <br />• Integrity of diesel storage tank and secondary containment <br />• Integrity of perimeter berms and truck wash out berms <br />• Fuel spills in diesel fueling area, and material spills in the silo area and mixer area. <br />• Open aggregate storage bins <br />• Air and oil leaks on machinery and equipment <br />• Belts, pulleys, rollers, and gates on plant equipment <br />Cleaning and maintenance will be performed as needed and in response to inspection results. <br />Records of these inspections are available through the plant manager or another member of the <br />site SWMP Administration Team. <br />Management Device Inspection Frequency Cleaning <br />Frequency Potential Failures to <br />Observe Closely <br />Hydrocarbon tanks Monthly As needed Adequate containment <br />Hydrocarbon secondary <br />containment Monthly As needed Ade uate containment <br />q <br />Catch basins As needed As needed Insufficient capacity <br />Settling ponds As needed As needed Insufficient capacity <br />Additive Storage As needed As needed Adequate containment <br />Containment devices (berms, <br />ditches, etc.) Monthly As needed Adequate containment <br />General Plant Conditions As needed As needed <br />Perimeter Erosion As needed As needed <br />Other <br /> <br />Parsons Mine <br />Storm Water Management Plan <br />Page 13 of 19