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' request an immediate field investigation. Depending on the apparent magnitude of the pipeline rupture and in consultation with the Plant Manager and/or General Manager, ' the operator may immediately shut down the pump station for the appropriate pipeline (i.e., the product pipeline or the return water pipeline) and close the outtake valve at the opposite end of the pipeline to facilitate pressure testing of the pipeline. However, the operator will always have the authority to shut down the pipeline system based solely on his own judgment that circumstances warrant such an action. c) Afield investigation (either by aircraft, automobile, ATV, or snowmobile) will be performed to determine if a pipeline breach is visible. Evidence of pipeline rupture could be the occurrence of water-logged soil, water/solution flowing from the ground, melted snow along the pipeline, etc. d) If a pipeline breach is located, the pipeline shutdown, pipe replacement, and pipeline restart procedures described in Section 3.0 -Immediate Response Conditions and Section 4.0 -Pipeline Repair will be followed. e) If a pipeline breach location is not identified, the following procedure will be ' followed: • Pipeline sections will be "isolated" through closure of manual valves and ' checked for their ability to hold pressure. Pressure testing will be the most efficient method for identifying the problem section. Once the problem pipeline section is identified, further field investigation of that section will be undertaken. ' Pressure will be maintained on the problem pipeline section during this effort in order to force liquids out of the pipeline breach and thereby facilitate pinpointing its location. Pressure testing will continue until the specific leak location is ' identified. Pressure testing should allow for relatively efficient leak location under most circumstances. ' • In the rare case where the location of the breach cannot be identified on the ground, a "smart pig' or an x-ray machine may be inserted into the pipeline to identify the actual location of the breach. This scenario is considered highly unlikely but could arise if a very small leak goes undetected and pressure testing fails to locate it. ' 3.0 IMMEDIATE RESPONSE CONDITIONS An immediate response is warranted if a pipeline breach or rupture is observed by ' either American Soda personnel or other individual(s). Pipeline breaches may be readily apparent (e.g., a backhoe operator incidentally ruptures a line) or may be less obvious if it is the result of long-term pipe failure (e.g., a small leak from a weakened pipe section). American Soda personnel monitoring the pipeline corridor will be trained to look for and identify unusual conditions that could indicate a pipeline rupture or breach. American Soda monitoring personnel will immediately notify the operator of any conditions suggesting a pipeline rupture or breach. Identifying signs along the pipeline P~pelme SpJI Cnnnngency Plan Yankee GWch Sodium Minerals Pmlen ' American Soda. L.L.P.