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3.3.4 Laying Pipe and Backfilling The trenching operation will be followed by pipe stringing, b~mding, lining up, welding, radiographic examination, wrapping, and coating. Pipe bending is required for changes in topography, crossing under pipelines and utilities, ~ and horizontal bending to the existing deflection points of the proposed pipeline. In some cases, factory-manufacriued bend will be required to mavrtain the specified sepazation distances. A bending schedule will be developed during final pipeline design after the centerline survey has been completed. Pipe will be temporarily stored adjacent to the trench (see Figure 2-1) on above- ground racks. This will allow the welders adequate space to work azound the entire pipe. Before the pipe is placed in the trench, selected native fill material will be used to 'pad the pipe in areas where there are rocks in the trench bottom or in the fill material. Stockpiled soil will not be used for pipeline padding.' If substantial rock is encountered during excavation of the trench, crock-crusher will be used to transform it into suitable fill material. If needed, fill material may be brought in from a BLM-approved off-site source to augment the fill However, this situation is considered unlikely based upon experience gained from other pipeline installations previously completed in the vicinity of tlhe project. The pipe will be lowered into the trench by side-boom tractors. After the pipe is placed in the trench, more of the selected fill materials will be used to protect the • pipe and coating material from damage before the trench is backfilled. Fill will then be placed over the pipe. Fill will be compacted to ensure that minimal settling occurs after the pipe has been installed and the ROW reclaimed. Along the Barnes Ridge portion of the pipeline corridor, an}~ leftover rock not used as fill material will be placed in small piles, rather than be>ing windrowed in Older t0 *t'~+*t~TM»p impacts to sage grouse. 33.5 Hydrostatic Testing After the pipe is in the trench, it will be hydrostatically tested for leakage. Water for hydrostatic testing will come from Unocal's alluvial water wells or Unocal's water withdrawal facility on the Colorado River south of the town of Pazachute. Test water will be routed from the Parachute Site up one pipe +to the Piceance Site and then down the semnd pipe back to the Parachute Site. Water quality will be tested before Henning the hydrostatic test and again before the water is discharged at the Parachute Site. PT IjI/ Plan of Development 24 Yankee Guld~ Sodiw~ M:ner~~s ptolect Amaimn5oda, LLP.