D-86 Construction shall be limited to the period March 15 through 



October 15. (Dates vary with species of concern as well as the 

 location of the refuge.) 



Silt control. (Silt control involves enlarging channels to increase water 

 flow velocity and to decrease siltation.) 



D-87 That the canal and levee construction and clean out operations 

 be conducted with a dragline--not a hydraulic dredge. 



D-88 The pond and marsh are to be enclosed with a continuous levee 

 built to elevation 0.45 m (1.5 ft) after settlement spoil from 

 the construction of new canals shall be used to form a continuous 

 levee. The spoil obtained from cleaning of existing canals should 

 be deposited in a continuous levee next to existing canal. 



D-90 Proposed canal is to come into Main Pass at a rather sharp angle 

 away from the flow of water through pass. The purpose of the 

 angle is to reduce water and silt flow from Main Pass into and 

 through other internal canals and ponds. 



Burning pit. 



D-91M The land manager shall approve of the burning pit location prior 

 to construction. The pit shall be constructed and maintained 

 so as to prevent the escape of waste materials into the marsh. 



Spills and Cleanup 



Contingency plan. 



D-39P The permittee shall file an "accidental spill" contingency plan 



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

 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 the delta marsh, as 

 well as proposed reclamation measures for site restoration. 



General . 



D-40P All spills or accidental discharge of oil, field brine, or other 

 petrochemical substances of greater than ( quantity ) liters shall 

 be reported to the land manager within 24 hr. 



391 



