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Preventive Maintenance <br /> Daily inspections of all storage and activity areas are conducted as a part of the operation. <br /> Comprehensive inspections are completed as required based on activity at the site (please see <br /> Section 4 for additional details). Inspections include at a minimum the 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 /> 0 Air and oil leaks on machinery and equipment <br /> • Belts,pulleys, rollers, and gates on plant equipment <br /> Cleaning and maintenance is performed as needed and in response to inspection results. Records <br /> of these inspections are available through the plant manager or another member of the site <br /> SWMP Administration Team. <br /> Management Device Inspection Frequency Cleaning Potential Failures to <br /> Frequency Observe Closely <br /> Hydrocarbon tanks Monthly As needed Adequate containment <br /> Hydrocarbon secondary Monthly As needed Adequate containment <br /> containment <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, Monthly As needed Adequate containment <br /> ditches, etc.) <br /> General Plant Conditions As needed As needed <br /> Perimeter Erosion As needed As needed <br /> Other <br /> 35°i Avenue Pit,Concrete,3 Asphalt Facilities <br /> Storm Water Management Plan <br /> Page 13 of 21 <br />