Page 



Site Access by Canal and Wellsite Dredging 368 



Wellsite Preparation and Operation for Leveed 



Marsh-Floor Locations 369 



Installation and Maintenance of Lines 371 



Placement and Operation of Production Facilities 374 



Spills and Cleanup 377 



Site Shutdown and Restoration 378 



Delta Marsh 380 



Seismic Preexploration 380 



Gravity Preexploration 381 



Site Access by Canal and Wellsite Dredging 382 



Dredged Wellsite Operation 384 



Installation and Maintenance of Lines 385 



Placement and Operation of Production Facilities 388 



Spills and Cleanup 391 



Site Shutdown and Restoration 393 



Levees and Spoil Banks 394 



Seismic Preexploration 394 



Gravity Preexploration 395 



Site Access by Canal 396 



Wellsite Preparation and Operation 398 



Installation and Maintenance of Lines 399 



Placement and Operation of Production Facilities 402 



Spills and Cleanup 403 



Site Shutdown and Restoration 404 



REFERENCES 407 



APPENDIXES 



A. Activities Associated with Oil and Gas Exploration and 



Production 420 



B. List of Common and Scientific Names Used in Text 439 



GLOSSARY 443 



XI 



