Environmental Services


HDL provides environmental studies and permitting services for a wide range of engineering and development projects.  We routinely provide permitting packages for airports, roads, bulk fuel facilities, power plants, utility improvements, site development layouts, resource extraction, and wind turbines. Our team is experienced in the NEPA process, environmental analysis, categorical exclusions, environmental checklists, and environmental assessments.  We provide Environmental Documentation, Permitting, Storm Water Management Plans, Phase 1 Environmental Site Assessments, Section 7 Consultation Assistance, Government-to-Government Consultation Assistance, Wetlands Delineation, Polar Bear/Human Interaction Plans, Noise Modeling, Public Involvement, and Vegetation Assessment and Monitoring.



  • Barter Island Airport Improvements Environmental Assessment (North Slope Borough)
  • Glenn Highway 34-42 Environmental Assessment (EA) Re-evaluation (State of Alaska DOT&PF)
  • Palmer Southwest Utilities Extension Permits - Phase I (City of Palmer)
  • Middle Kuskokwim Regional Energy Project Environmental Review and Permits (Alaska Energy Authority)
  • Government-to-Government Consultation Assistance (Federal Aviation Administration)
  • Talkeetna Public Water System Improvements (USDA)
  • Conceptual Mining Plan (University of Alaska)
  • Palmer Airport RPZ Property Acquisition (City of Palmer)
  • Seldovia Airport Master Plan Environmental Assessment (State of Alaska DOT&PF)
  • Wasilla Airport Master Plan (City of Wasilla)
  • Wasilla Airport Aprons IA and IC (City of Wasilla)
  • Marathon Road Improvements (City of Kenai)
  • Baron Park Road Improvements (City of Kenai)
  • South Mack Drive, Phases 1&2 (City of Wasilla)
  • The Alaska Zoo Entrance (The Alaska Zoo)
  • Girdwood Library Expansion (Municipality of Anchorage)
  • South Anchorage Electrical Substation (Chugach Electric Corporation)
  • Little Campbell Creek Fish Passage Improvements Phase I (Municipality of Anchorage)
  • Museum Drive Extension (Matanuska-Susitna Borough)
  • Unalakleet Beach Road Rehabilitation (Quality Asphalt Paving)
  • Valley Pathways School Site Development (Matanuska-Susitna Borough)
  • NW1/4 Section 25 Conditional Use Permit (State of Alaska DOT&PF)
  • Dillingham Site Evaluation (The Foraker Group)
  • Eagle River Veterans of America Group Home (The Foraker Group)





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