ACKNOWLEDGMENTS 



We wish to acknowledge the assistance of several persons in conducting 

 this study. Andrew Reed and Alan Dutton helped with conceptual ideas, geologic 

 interpretation, and experience in impact assessment. Steve Minick and Denise 

 Girrard provided aid in finding literature, maps, and information, as well as 

 organizing tables and drafting figures. Nancy Grona was technical editor and 

 coordinated all aspects of producing the technical report. 



We are particularly grateful to the many refuge managers and staff who 

 provided information for this project. We particularly would like to thank: 

 1 .-ank Johnson and the staff of the Aransas National Wildlife Refuge; Larry Ivy 

 and the staff of the Brazoria and San Bernard National Wildlife Refuges; Ted 

 Clark and Charles Stutzenbaker of Texas Parks and Wildlife Department; John 

 Walther and the staff of the Sabine National Wildlife Refuge; Alan Ensminger 

 and Ted Joanen of Louisiana Wildlife and Fisheries Commission; and Cecil 

 McMullen and the staff of the Delta National Wildlife Refuge. 



We would also like to thank Larry Shanks, Vic Kay, and Tom Smith of the 

 U.S. Fish and Wildlife Service for their assistance, and Richard Wade who served 

 as Project Officer for the Office of Biological Services. Finally, we thank 

 Larry Lodwick of Texas Parks and Wildlife Department, who lent essential litera- 

 ture, and Gary Austin and his associates of the Atlantic Richfield Company, 

 who provided information concerning petroleum industry practices. 



This report was submitted in fulfillment of Contract No. 14-16-008-2152 

 by RPC, Inc., under the sponsorship of the Coastal Ecosystems Project, 

 National Coastal Ecosystems Team, Office of Bioloaical Services, U.S. Fish 

 and Wildlife Service. Work was completed as of 29 November 1977. Subsequent 

 review and editing were performed by Timothy Sipe and Jill Parker of the 

 Coastal Team. 



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