and pipelines, must be maintained and repaired so as to prevent 

 leakage or waste. Any inevitable waste in proximity to the 

 source must be confined so as to prevent escape that might other- 

 wise occur as a result of rains, high water, or natural drainage. 



LI-49P Utilization and disposal of used or waste solid materials result- 

 ing from production processes or treatment equipment, such as 

 oil-contaminated sand, brine sediments, chemical precipitates, 

 or other filtrable solids, as fill material is prohibited on 

 the refuge. 



U-51P The permittee shall take such measures to prevent soil erosion 

 from starting within the easement as the land manager may pre- 

 scribe and shall take such other conservation measures, includ- 

 ing restoration of disturbed ground surfaces, mulching, and 

 revegetation, that may be requested by the land manager. 



Patrolling and inspecting pipelines. 



U-10 Exceptions to the 305-m (1000-ft) minimum ceiling restrictions 

 are made for pipeline flights. 



Spills and Cleanup 



Contingency plan. 



U-52P The permittee shall file an "accidental spill" contingency plan 

 with the land manager prior to initiating well-drilling, pipe- 

 line, or production facility operations. The plan shall outline, 

 but is not limited to, proposed procedures to report, contain, 

 and clean up all types of oil/brine spills in terrestrial systems, 

 as well as proposed reclamation pleasures for site restoration. 



General . 



I 



I 



U-53P All spills or accidental discharges of oil, field brine, or other 

 petrochemical substances of greater than ( quantity ) liters shall 

 be reported to the land manager within 24 hr. 



U-54P Containment and cleanup of an accidental spill shall be con- 

 ducted as soon as possible following its discovery, unless other- 

 wise specified by the land manager. 



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