Wetlands contain diverse and productive ecosystems that support a multitude of species. With the recognition of the value of these ecosystems, laws are in place to protect and restore impacts on these resources in the face of land development.

At Larson Design Group, we understand the regulations that protect these ecosystems. Through state-of-the-art approaches, Low Impact Development (LID), and environmentally friendly designs, we are able to effectively develop clients’ projects.

Whether you are planning a residential development, constructing a utility line, replacing a bridge, or restoring a stream corridor, LDG’s environmental specialists are fluent in the challenges that arise when proposed project activities interact with the natural environment.Services

  • Wetland Delineations
  • Wetland Mapping
  • Wetland Design
  • Wetland Mitigation
  • Wetland Monitoring
  • Wetland Banking
  • Restoration and Enhancement
  • Functional Assessments
  • Government Agency Coordination
  • State and Federal Permitting


Watershed Evaluation & Planning

Larson Design Group understands that watershed evaluation and planning is a highly complex process requiring an interdisciplinary approach. LDG‘s environmental professionals are experienced in targeting desired goals and objectives while maintaining a socially responsible, environmentally effective, and fiscally responsible process.

By using innovative ideas and designs, our biologists and planners are able to assess a watershed’s overall health, create solutions for existing problems, and assist in land development. LDG provides professional services for all our clients’ needs through all phases of watershed evaluation and planning.Services

  • Watershed Management Plans
  • Watershed Delineation and Mapping
  • Functional Assessments
  • Water Quality Testing
  • Stormwater Management
  • Erosion Control
  • Sediment Transport Analysis
  • Stream Flow Analysis
  • TMDL Analysis
  • Restoration Planning
  • Nutrient Management Planning
  • Watershed Monitoring
  • Habitat Enhancement
  • Site Identification and Prioritization
  • AMD Remediation
  • Construction Planning
  • Conservation Planning
  • Grant Writing
Environmental and Ecological Services

Environmental and Ecological Services

Stream Evaluation Protocols

  • Headwater Habitat Evaluation Index (HHEI)
  • Qualitative Habitat Evaluation Method (QHEI)
  • Rapid Biological Assessment (RBA)
  • North Carolina Stream Identification Methodology
  • In-stream Comprehensive Evaluation (ICE)



Stream Restoration/Flood Protection


Environmental and Ecological Services

Environmental and Ecological Services


Stream systems and their associated flood plains are highly complex ecosystems impacted by land development and encroachments. It’s important to maintain the interconnectivity of a stream and its floodplain in order to support its ecological functions. Often, these resources are affected through channelization, reduced riparian buffers, agricultural processes, land development, transportation/utility corridors, and destructive natural processes such as flooding.

LDG assesses stream and riparian restorations with a holistic approach that varies from structural designs and channel modifications to realignments and restoring stream reaches with natural designs. Through our innovative practices, we prevent and minimize flooding, preserve natural floodplains, improve water quality, maintain ecological functions, restore healthy habitats for aquatic life, and reduce overall impact on infrastructure such as roads, buildings, sewer lines, and bridges.

Larson Design Group provides professional services for all our clients’ stream restoration and flood protection needs through all phases of assessment, identification, and design.Services

  • Terrestrial & Aquatic Habitat Restoration
  • Stream Relocation Design & Permitting
  • Floodplain Analysis/Risk Assessment
  • Flood Protection Design and Permitting
  • Acid Mine Treatment Design
  • Culvert Design and Replacement
  • Riparian Buffer Enhancement
  • Construction Inspection and Monitoring
  • Habitat Conservation Plans and Easements
  • Grant Writing
  • Floodplain Management & Permitting
  • Habitat Enhancement Structures
  • Stream Bank Stabilization
  • Agricultural BMP’s
  • Stream Bed Enhancement
  • Aquatic Organism Passage
  • FEMA Study
  • Flood Damage Repair
  • Ecological Surveys


As cities and towns expand, there are increasing levels of interaction between natural resources and development. As growth continues, it is paramount to regulate those interactions. LDG’s environmental specialists are experts in the utilization of scientifically proven, agency approved protocols.

Larson Design Group provides high quality ecological consulting to a wide array of clients who have projects located in the intersection of developed and undeveloped lands, and the natural resources contained within. LDG’s experienced environmental specialists assist clients in identifying, assessing, permitting, and monitoring these resources through specialized ecological services.


Ecological Services

  • Macro invertebrate Surveys
  • Fishery Surveys
  • Terrestrial & Aquatic Habitat Evaluations
  • Avian Surveys/Migratory Bird Counts
  • Forest Stand Delineations
  • Bog turtle Habitat Assessments
  • Soil Mapping
  • Invasive Species Management &Control
  • NEPA Documentation & Compliance
  • Botanical Surveys
  • Threatened & Endangered Species Coordination & Evaluation
  • Environmental Site Assessment


Environmental and Ecological Services

Environmental and Ecological Services



Stream and wetland regulations are ever changing; they vary widely from state to state and even from county to county. It can be difficult to understand the parameters a specific permit requires and which permit to use when.

Permitting a project can be done effectively and cost efficiently through appropriate avoidance and minimization measures. When completed through LDG’s planning and permitting process, clients see increased approvals, decreased delays, and reduced penalties associated with their projects. LDG handles complex projects and assists in navigating the permitting process through innovative and well-developed processes that will keep your project on budget and on time.

LDG has offices covering several states, each of which has a wide array of regulations. Our experienced environmental specialists and planners work closely with clients and regulators to develop project plans and permit packages tailored to specific needs and budgets, no matter the location, size, or complexity.

Environmental and Ecological Services

Environmental and Ecological Services

Permitting Agencies

  • PA Department of Environmental Protection
  • U.S. Army Corps of Engineers
  • PA Department of Transportation
  • PA Department of Conservation & Natural Resources
  • PA Fish & Boat Commission
  • U.S. Fish & Wildlife Service
  • County Conservation Districts
  • New York State Department of Environmental Conservation
  • West Virginia Department of Environmental Protection
  • West Virginia Division of Natural Resources
  • West Virginia County Floodplain Coordination Program
  • Ohio Environmental Protection Agency
  • Ohio Department of Natural Resources
  • Ohio Department of Transportation
  • Texas Commission on Environmental Quality

Permit Types

  • NPDES Individual & General Permits
  • NPDES General Permits
  • Stormwater Permits
  • Nationwide Permitting
  • PA General Permits
  • Section 401/404 Joint Permit Applications
  • Isolated Wetland Permitting (OH EPA/WVDEP)
  • PA DCNR/ODNR/WVDNR Land Use Permits
  • WV DNR Stream Activity Permit
  • NEPA Compliance
  • Environmental Compliance

Environmental compliance is scrutinized by both the government and the general public. Proper testing and best management practices need to be followed to ensure that there is no adverse effect on the environment.

LDG’s environmental specialists understand the strict environmental compliance regulations that must be followed during all phases of construction and design. We strive to protect the interests of our clients and contractors, and to protect our environment.

We continuously strive to develop the best solutions for environmental compliance. We coordinate with agencies to ensure that there will be minimal environmental impacts and that any instances are resolved quickly.


  • Geotechnical Evaluations
  • Construction Inspection
  • E & S Inspection
  • Septic System Inspection
  • Infiltration Testing
  • Percolation Testing
  • Zoning
  • Soil Profiling
  • Mitigation Site Monitoring
  • Water Well & Soil Sampling
  • Environmental Reporting