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Control — <br />Drainage <br />Chevro;i <br />■ JRestra n drainage from diked storage areas by use of manually operated valves, <br />-4hLat are maintained normally closed and locked. <br />rb,scharge uncontaminated drainage from diked storage areas by use of manually <br />cn "Operated pumps, under responsible supervision. <br />collected storm water in diked areas following visual inspection for <br />sheen. <br />— Terminal operating procedure- T-12 "Discharging Storm Water" <br />— Storm water discharge logs <br />■ Undiked areas with a potential for a discharge (e.g. product transfer piping <br />outside of dike walls) must have drainage controls designed to retain a spill in a <br />pond, lagoon, or catchment basins, or return the discharge to the facility. <br />— "Environmental Equivalent" controls may be also used, with P.E. approval. <br />(D 2014 Chevron <br />12 <br />