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PART II, ALTERNATE A Attachment A <br />DESIGN AND OPERATING INFORMATION Page 5 of 8 <br />ONSHORE FACILITY (EXCLUDING PRODUCTION) <br />(Response to statements should be: YES, N0, or NA (Not Applicable).] <br />B. Bulk Storage Tanks <br />1. Describe tank design, materials of construction, fail-safe <br />engineering features, and if needed, corrosion protection: <br />Four 4) 12.000 gal. underground double wall fiberglass tanks <br />installed in peagravel backfill. Protected with 8" concrete slab <br />over tanks. <br />2. Describe secondary containment design, construction materials, <br />and volume: Double wall tanks provide 100% containment - Double <br />wall space is monitored continuously with liquid and an alarm. <br />Overfill protection and double wall piping is provided with <br />electronic monitors. <br />3. Describe tank inspection methods, procedures, and record keeping: <br />1. Daily inventory records tank inventory reconciled against <br />sales and deliveries. <br />2. Annual inventory reconciliation performed by Shell Oil <br />Copany. <br />l 3. See HMMP Plan on file at Station as required by Contra Costa <br />County. <br />4. Internal heating coil leakage is controlled by one or more of the <br />following control factors: <br />(a) Monitoring the steam return or exhaust lines for oil.NA <br />Describe monitoring procedure: <br />1J <br />(b) Passing the stream return or exhaust lines through a settling <br />tank, skimmer, or other separation system. NA <br />(c) Installing external heating systems. NA <br />5. Disposal facilities for plant effluent discharged into navigable <br />waters are observed frequently for indication of possible upsets <br />which may cause an oil spill event. NA <br />Describe method and frequency of observations: <br />'Name of facility Grant Line Tracy Shell <br />Operator Carl Cox Dealer <br />(Part II, Alternate A) Page 2 of 5 <br />