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Texas Department of Transportation - Precertifications Crespo Consulting Services is pre-certified in the following areas: 2.4.1 Nationwide Permit 2.4.3 Coast Guard & US Army Corp of Engineering Permits 2.5.1 Water Pollution Abatement Plan 2.13.1 Hazardous Materials Initial Site Assessment 10.1.1 Hydrologic Studies 10.2.1 Basic Hydraulic Design 10.3.1 Complex Hydraulic Design 10.4.1 Pump Station Hydraulics 10.5.1 Bridge Scour Evaluations and Analysis |