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                    OPERATIONAL CONDITIONS REQUIRING
                   THE ISSUANCE OF OPERATIONAL ALERTS
                     AND/OR OPERATIONAL FLOW ORDERS
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 lISTED BELOW ARE EXAMPLES OF CONDITIONS THAT WOULD CAUSE CEGT TO ISSUE
 AN OA AND/OR OFO:
 01) PIPELINE RUPTURE (LEAK) - VOLUME OF GAS LOST THROUGH HOLES IN PIPES
     OR BREAKS IN PIPES OR FITTINGS REQUIRING A SECTION OR SECTIONS OF
     THE LINE TO BE ISOLATED AND BLOWNDOWN.
 02) PIGGING OPERATION - A CLEANING DEVICE THAT IS SENT THROUGH A
     PIPELINE TO SCRAPE AND BRUSH FOREIGN DEPOSITS, RUST, AND DIRT FROM
     INSIDE SURFACE OF THE PIPE.
 03) COMPRESSOR OUTAGE - SHUTTING DOWN EITHER INTENTIONALLY OR
     UNINTENTIONALLY A UNIT OR A NUMBER OF UNITS IN A STATION DUE TO
     MECHANICAL PROBLEMS.
 04) CLOSED SYSTEMS - SUPPLY INPUT EXCEEDS BOTH MARKET OUTPUT AND
     PHYSICAL ABILITY (COMPRESSION) TO EXTRACT.
 05) CAPTIVE SYSTEMS - NO AVAILABLE MEANS TO EXTRACT GAS IF SUPPLY INPUT
     EXCEED MARKET OUTPUTS.
 06) FREEZE-OFFS - PRODUCTION FROZE OFF DURING COLD WEATHER.
 07) PIPELINE SHUTDOWNS - SECTIONS OF THE PIPELINE THAT ARE ISOLATED,
     SHUT IN, AND BLOWN DOWN FOR TIE-IN WORK, DEHY WASHOUT, PIPE
     REPLACEMENT OR LINE LOWERING.
 08) STORAGE FIELD FAILURES - VOLUME OF GAS UNAVAILABLE FOR INJECTION
     OR WITHDRAWAL FROM STORAGE DUE TO EQUIPMENT MALFUNCTIONS OR GAS
     FIELD PROBLEMS.
 09) STORAGE FIELD MAINTENANCE - VOLUME OF GAS UNAVAILABLE FOR INJECTION
     OR WITHDRAWAL FROM STORAGE DUE TO BOTTOMHOLE TESTING AND OTHER
     TESTING NEEDED; ALSO GAS FIELD WORK NEEDED.
 10) PIPELINE EQUIPMENT FAILURES - ANY TYPE EQUIPMENT FAILURE THAT
     WOULD PROHIBIT THE FLOW OF GAS.
 11) CAPACITY CONSTRAINTS - OCCURS WHEN THE SYSTEM OR SECTION/S OF
     SYSTEM ARE FULLY UTILIZED AND GAS FLOWING INTO OR OUT OF SUCH
     AREAS ARE ATTEMPTING TO EXCEED MAXIMUM AVAILABLE CAPACITY.