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' YANKEE GULCH SODIUM MINERALS PROJECT PIPELINE SPILL CONTINGENCY PLAN ' 1.0 BACKGROUND AND INTRODUCTION ' This Pipeline Spill Contingency Plan (Spill Plan) addresses two of the most likely pipeline "emergency" scenarios that could occur during operation of the American ' Soda, L.L.P. (American Soda) Yankee Gulch Sodium Minerals Project (Yankee Gulch Project). Scenario #I: The first scenario would include pipeline equipment instrumentation readings that indirectly indicate a release in the pipeline system. Such readings would not be able to specifically indicate where the release is occurring. This situation is described in Section 2.0 -Abnormal Operating Conditions. Scenario #2: The second scenario would include a known pipeline breach or rupture that has been observed by an American Soda employee or other individual(s). This t situation is described in Section 3.0 -Immediate Response Conditions. 2.0 ABNORMAL OPERATING CONDITIONS ' Normal values for operating parameters, such as pressure, temperature, flow rate, and valve position, will be established for the Yankee Gulch Project pipeline system. ' Operating conditions that deviate outside normal operating limits are known as abnormal operating conditions. ' One example of an abnormal operating condition would be if normally consistent pipeline pressure readings decrease slowly due to a small corrosion leak. The opposite extreme might occur wherein an operator receives an indication of a sudden, t unexplained pressure drop or change in flow rate at either facility. The latter could occur as a result of a catastrophic pipeline rupture caused by an outside party (e.g., a highway construction crew accidentally cutting a pipe). In this example, the Clow rate at the upper end of the product line would remain stable, while the flow rate at the lower end would suddenly decrease to a level well below that of the upper reading. The Yankee Gulch Project operator will investigate and analyze each observed variation from normal operating limits and respond with appropriate action to resolve the abnormal condition. When an abnormal operating condition is detected by personnel at 1 either the Piceance Site or the Parachute Site, the operator will take the following actions: a) The operator will confirm that the pressure and flow instruments (and possibly other additional instrumentation) are calibrated properly and in good working order. This will enable the operator to verify that instrument readings actually represent ' abnormal conditions and are not due to instrument inaccuracies or failure. b) If the readings are determined to be valid, the operator will promptly notify the ' American Soda Plant Manager and/or General Manager, describe the situation, and PiPeGne SPJI Confingenry Plan Yankee GWch Sod~urn Atinerals Pmlen American Soda, 4L.P.