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In-Service AST Inspection Report Formal External Inspection of 8,800-Gallon Tank(AST-5) Valley Pacific Petroleum Services,Inc. Page 3 surface limiting corrosion potential between the saddles and tank surface.The supports and saddles appear to be in fair condition and secured to the foundation with bolts. 1.8. The single-wall tank is located within a masonry block/concrete secondary containment structure with sufficient capacity for the entire tank contents.The tank is elevated providing a suitable Continuous Release Detection Method(CRDM). 1.8.1. The secondary containment structure was inspected for indications of settlement, cracking, exposed rebar, and general disrepair. Minor cracks were noted in the concrete floor; however, water in the containment area prevented further investigation of the cracks severity. 1.8.2. The secondary containment structure was inspected for foreign materials and for liquid in the containment area. Pooled liquid was present and likely a result of recent rain activity.Depth of the water in containment ranged from 6"to 12"deep. A spotty sheen was observed on the water surface. 1.8.3. The secondary containment walls and drain valves were inspected for penetrations. Drain valves were not observed and the containment walls showed no signs of penetrations through the secondary containment that may compromise the integrity of the containment area. A square sump without a pump was identified along the southwest end of the containment structure. Further inspection of the sump was obstructed by the water in containment. 1.9. Ancillary equipment was inspected for condition and operability. 1.9.1. Piping and piping connections were inspected for visible signs of stress or leakage such as severe corrosion, rusted bolted connections, or other severe degradation. Piping and piping connections were observed to be in good condition. However, leaks were observed between the tank pump connections and the dispensers. ASTs have specific fittings that are generally accepted per industry standards or are required by applicable regulations. The following observations were made of fittings installed on AST-5: • One topside 4-inch National Pipe Thread (NPT) coupler reduced to 2-inch pump connections. • One topside 4-inch NPT coupler to 4-inch "T" fitting reduced for 3-inch fill pipe connection and reduced for 2-inch observation port/loose fill fitting. • One topside 4-inch NPT coupler reduced to 3/4-inch fitting for liquid level gauge. • One topside 4-inch NPT coupler reduced to 2-inch normal vent riser pipes with screen vent caps. • One topside 27-inch long-bolt manway—approved for ERV. • Two top side center of tank lift points. • One bottom side 1-inch NPT coupler with a threaded plug approximately 4- inches northwest of the center support saddle. 1.9.2. The Tank was equipped with one 2-inch diameter normal vent which terminated approximately 15 feet above ground level and was observed to be in working condition. The tank was equipped with emergency relief venting (long bolt manway)installed as required by the National Fire Protection Association(NFPA) uniform fire codes and NFPA 30 flammable and combustible liquid codes. 16 ILO CONDOR