What We Do

HEI specializes in preliminary wetland determination and delineations, Section 401 and 404 permitting, National Environmental Policy Act (NEPA) documents and compliance, performing environmental site assessments, preparing Stormwater  Pollution Prevention Plans (SWPPPs), FEMA floodplain permitting, threatened and endangered species surveys, cultural resources clearance, and mitigation planning.  While comfortable working in areas across the southern United States, HEI's primary focus in Texas, Oklahoma, Louisiana, and Arkansas.

No matter the size or complexity of a particular project, it will be treated as a top priority and will receive a high level of oversight from start to finish.  Because HEI is a small business comprised of experienced personnel, our clients receive highly personalized service and a quality product.  This level of service is maintained throughout the entire project.  HEI also strives to sequence the timing of services so that whether HEI is performing a preliminary evaluation, preparing a permit for submission to the USACE, or insuring a project is in compliance, all phases of the project are orderly and flow smoothly.  HEI utilizes the most current information and remotely sensed data combined with the latest mapping software in order to provide our clients with the most reliable, site specific, regulatory guidance possible during the evaluation process in an effort to avoid wasting time or money.

HEI has extensive knowledge in USACE Nationwide, Regional General, and Individual Permits in several USACE Districts in Texas, Louisiana, Oklahoma, and Arkansas.  Services that HEI provides include:

Waters of the US

• USACE Section 10/404 Permitting
• Preliminary Wetland and Other Waters of the U.S. Determinations and Delineations
• Wetland Restoration/Creation/Enhancement
• Wetlands and Stream Mitigation
• Functional Assessments and Baseline Biological Inventories
• Section 401 Water Quality Certification

Cultural Resources

• Section 106 National Historic Preservation Act (NHPA) Compliance
• Cultural Resources Surveys, Management/Avoidance Plans, Mitigation and Agency Coordination

Threatened & Endangered Species

• Section 7 Endangered Species Act (ESA) Compliance
• Threatened/Endangered Species Surveys, Habitat Assessment and Monitoring
• U.S. Fish and Wildlife Services (USFWS) Consultation

National Environmental Policy Act (NEPA) Compliance

• Environmental Assessment (EA) and Environmental Impact Statement (EIS) Preparation
• Permit Identification and Management for Agency Coordination
• Public Meeting Preparation and Coordination

Storm Water Permitting

• Storm Water Pollution Prevention Plans (SWPPP)
• National Pollutant Discharge Elimination System (NPDES) Permitting Assistance
• Best Management Practices (BMP) Inspections and Compliance

Additional Services

• Environmental Inspections Services
• Environmental Due Diligence
• Mapping Services (ArcGis)
• Federal Emergency Management Agency (FEMA) Floodplain Permitting
• Hydrostatic Test Permitting
• Federal Energy Regulatory Commission (FERC) Compliance
• Tree Surveys
• Wildlife Management