Ayrshire Corporation
Apache Corporation
BE&K/Terranext
Blackard Developments
Brazoria County, Texas
Bricker + Cannady Architects
Caprock Environmental, Inc.
City of Pasadena, Texas
Dow Chemical, Inc.
ENTRIX, Inc.
Evangeline Downs Racetrack and Casino
Exxon Pipeline Company
Ford Motor Company, Kansas City, MO
Halff Associates, Inc.
Halliburton KBR – Infrastructure
Harris County Flood Control District, Texas
Harris County, Texas - Infrastructure Department
Kellogg Brown & Root, Inc.
Kinder Morgan, Inc.
Lake Ronel Oil Company
Montgomery Watson Harza
PennzEnergy, Inc.
Petro-Guard Company, Inc.
Phase One Technologies, Inc.
Pierce Goodwin Alexander & Linville (PGAL)
Plummer & Associates, Inc.
Ranger Oil Company
Sonat Exploration Company
Spectrum Global Services, Inc.
Tejas Gas Corporation
TEPPCO
Texas Department of Transportation
The Woodlands Operating Company, L.P.
Tim Morton & Associates, Inc.
TransTexas Gas Corporation
U. S Army Corps of Engineers, Mobile, Alabama
U. S. Fish and Wildlife Service, Albuquerque, New Mexico
U. S. National Park Service, Skagway, Alaska
Veritas DGC