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01CULIVLLJ FEE 5 2016 SPOOITank Inspection 2016 • NCPA CTI,Lodi,CA 95240 ENVIRONMENTAL. Tank Inspection Frequency: STI, SP001 inspection determination and inspector requirements. The tank is a factory built tank with a working volume of 1,886 gallons. The tank is within secondary containment and it has a continuous release detection monitor. The class of the tank is class 1. Class 1 tanks of this tank's volume require annual visual external inspection by the owner's inspector who is familiar with the tank's operation. STI SP001, External Inspection Check list for this type of tank. 7.1.3 Inspection Review: Complete 7.1.4 Name Plate Data: Missing 7.1.5 Inspect Fabrication vs Standard. Meets the criteria of a UL 142 tank with the exception of the missing emergency vent. 7.1.6 Inspect the foundation: The foundation is concrete free of settlement, spalling, with a few small cracks. The tank is anchored to the foundation in 6 places. Anchoring prevents seismic shifting and floatation if the dike were flooded. 7.1.7 Inspect Tank Supports: The tank is supported by a steel collar the same diameter as the tank. The collar height is 3". The collar is in good condition with no signs of significant corrosion. 7.1.8 Inspect the CRDM, continuous release detection monitor and secondary containment. The secondary containment is an earthen diked coated with shotcrete. The shotcrete is cracked and missing in some areas. The main purpose of the shotcrete is to protect the dike from erosion and pest burrows. In some places there are sign of erosion and burrows. The eroded earth should be removed and the burrows filled and concrete be reapplied. Cracks in the concrete should be sealed to prevent further deterioration. 7.1.8.1 Inspect the general condition of the tank. The tank is in good condition with no signs of damage of significant corrosion. 7.1 8.2 Inspect for foreign materials in secondary containment. The secondary contain contains leaves and dirt and is covered by moss in several areas. The leaves, dirt and moss shall be removed. 7.1.9 Ancillary Equipment Inspection. 7.1.9.1 Piping and Connections. The piping and connections are in good condition. However, there are areas where dirt has come in contact with the pipes. The dirt must be removed to prevent corrosion where it contacts the pipes. There are approximately four piping nozzles which are not capped or blind flanged. Piping nozzles must be capped or blind flanged when not in use. Piping support were inspected and were good with the absence of corrosion or fretting of the pipe that is in contact with the support. 7.1.9.2 Emergency Vent and Normal Vent. The normal vent was inspected and is free of obstructions. The emergency vent was missing and the tank roof is non-frangible. The tank requires emergency venting unless approved by the authority having jurisdiction. John Strandberg PE,rwaterguysarwater uy.com 1-866-388-0404 3 1 P a e