Donald L. Hamlin Consulting Engineers, Inc. has broad and diverse experience in all aspects of Civil Engineering.  Our experience encompasses virtually every phase of project development from feasibility studies to final design, permitting, and construction phase support.


The firm has expertise and offers a complete range of professional services in the following areas:


Community Development

Residential Development

Traffic Modeling

Wastewater Treatment

Water Supply

Land Surveying & Mapping

Streets and Highways

Pedestrian & Bicycle Facilities

Industrial Development

Recreational Facilities

Ski Areas

Engineering Investigations

Resident Engineering

Expert Witness Testimony

Intersection Design

Drainage and Stormwater Facilities

Compliance Monitoring

Project Management

Three Dimensional Modeling

Plan Review

Construction Estimating

Consulting Services for Contractors



The company’s organization and diversity of talent allows the flexibility to provide these services for small or large scale projects and assures personal attention in all stages of project development. 


Environmental and Permitting Assistance – Virtually all of our projects undergo local and/or state permitting reviews.  Over the years, we have developed an excellent rapport with the various local and/or state agencies, with whom we interact on an almost daily basis, related to the following permits:   


Local Permits:


Subdivision Permit

Site Plan Approval

Zoning Variance

Conditional Use Approval

Building Permit


State Permits:


Land Use Permit (ACT 250)

Wastewater Disposal and Potable Water Supply Permit

Stormwater Discharge Permit

Wetlands Permits

Indirect Discharge Permit

Air Pollution Control Permit

Public Water System Construction Permit

Construction Stormwater Discharge Permit

Direct Discharge Permit

Shoreline Encroachment

Federal Permits:


Army Corps of Engineers Permits

National Environmental Policy Act