Natural Resources

Timmons Group offers a full range of Natural Resource services including field investigations, planning and permitting.


Our Professional Wetland Scientists and Professional Wetland Delineators take care in accurately mapping existing conditions, clearly reporting information to clients and regulatory organizations, and working through the permitting process from beginning to end. Our field scientists have strong backgrounds in plant and soil identification and use GIS technology to accurately delineate streams and waters of the U.S., jurisdictional wetlands, cultural resources and endangered species habitat.


The Environmental Services team works collaboratively to creatively plan projects while avoiding and minimizing impacts to streams, wetlands and other resources. Our commitment to ecological stewardship aids our clients’ project goals and creates strategies for environmental enhancement.

Natural Resources Services:

  • Wetland Delineation and Confirmation
  • Environmental Inventories/Constraints Identification
  • Wetland and Stream Functional Assessment
  • Stream Perenniality Determination
  • Resource Protection Area Determination (Virginia)
  • Riparian Buffer Rule Determination (North Carolina)
  • Wetland Certification Letter (Chesterfield County)
  • Forest Stand Delineation (Maryland)
  • Water Quality Impact Assessment
  • Infiltration Testing and Analysis
  • Nutrient Management Plans
  • Chemical and Biological Water Analyses
  • Soil Assessment/Suitability Studies
  • Erosion and Soil Loss Assessment 

Regulator Permitting & Coordination:

  • Pre-Application Meeting
  • Wetland Impact Permitting
  • Endangered Species Surveys
  • Cultural Resource Survey Coordination
  • Mitigation Plan Development
  • Construction Oversight
  • Permit Compliance Monitoring
  • Corrective Action Plans
  • Regulatory Policy Consulting
  • VSMP/NPDES Permitting
  • SWPPP Development
  • Erosion and Sediment Control Inspections
  • TMDL Compliance
  • Expert Witness Services