Professional Land and Water Resources Consulting
Headwaters Hydrology, PLLC is a multi-disciplinary Civil Engineering and Environmental Consulting firm located in the White Mountains of northern New Hampshire. Headwaters was formed in 2007 with a focus on providing professional Civil Engineering and Water Resources Consulting to a broad range of clientele throughout New Hampshire.
â€?Hydrologic, hydraulic, and sediment transport modeling
â€?Bridge hydraulics and scour analysis
â€?Design of waterway openings and stream crossings to satisfy state and federal safety and environmental regulations
â€?Bank stabilization design
â€?Floodplain mapping and impact assessment studies
â€?Fluvial geomorphic assessments
â€?Fluvial erosion hazard mapping
â€?Stream restoration design
â€?Stream crossing design
â€?Wetland delineation and mapping
â€?State and federal permitting
â€?Mitigation site design
â€?Mitigation site construction supervision and post-construction monitoring
An important part to owning land is knowing what to do with it. We have the ability to help our clients visualize the full potential of their land in an effort to meet their long term objectives. We can map the natural resources, identify areas of environmental jurisdiction, evaluate permitting requirements, and prepare conceptual plans and cost estimates on potential alternatives.
We have permitted projects requiring various state and federal environmental approvals and have earned an excellent reputation with state and federal regulators by developing project proposals which balance the clientâ€™s needs and budget with environmental considerations. Given our knowledge of hydraulics, fluvial geomorphology, and wetland science we are particularly well qualified to assist clients with projects involving stream and floodplain alterations.
We believe strongly in communicating with the regulatory agencies during the early stages of project development so that their concerns are known and can be addressed during the design phase. This approach ultimately saves our clients time and expense by minimizing design changes and the duration of permit application reviews. We have experience with the following permits.
â€?NHDES and Army Corps Wetland Permits
â€?NHDES Shoreland, Alteration of Terrain, Water Supply, Wastewater, Subsurface, Sewer connection, and Subdivision Approvals
â€?FEMA Letters of Map Amendment (LOMA) and Conditional Letters of Map Revision (CLOMR)
â€?EPA Construction General Permits and Erosion Control Monitoring
Design experience includes; roadways, site plans, utility layout, and drainage infrastructure. One of the most important aspects to roadway and site plan design is knowing how to deal with runoff and drainage from the site. Our experience with hydraulic and hydrologic analyses plays an important role in providing a successful project that accounts for the various aspects of runoff including controlling flooding, erosion, and sedimentation.
We are prequalified through the NH Department of Environmental Services Drinking Water and Groundwater Bureau to assist municipal and private clients with design and permitting of their water systems.
Design experience includes; water main, pump stations, water storage tanks, and valve vaults. Staff experience also includes engineering studies and evaluations of water systems including hydraulic modeling and preparing engineering reports.
We have conducted onsite supervision during construction of water system improvements to ensure the project is being constructed in accordance with the approved plans, specifications, and relevant permitting requirements.
Design experience includes; gravity sewer main, sewer forcemain, pump stations, and community effluent disposal fields. Staff experience also includes engineering studies and evaluations of sewer systems including treatment facilities and preparing engineering reports in accordance with potential State and Federal funding agency requirements.
We have conducted onsite supervision during construction of sewer system improvements to ensure the project is being constructed in accordance with the approved plans, specifications, and relevant permitting requirements.
We have the ability to design and permit subsurface disposal systems ranging from single family residential to large commercial applications in excess of 2,500 gallons per day. We are licensed to design disposal systems in New Hampshire, Vermont, and Maine.
Design experience includes; traditional stone and pipe, Presby Enviroseptic, leaching chambers, and pressure distribution. Gravity flow applications tend to be the most desirable from a maintenance standpoint, but we have considerable experience with pumped system and pump station design if needed.
Once design and permitting is complete and the client wishes to construct the project, we have the ability to administer and manage the construction aspects on behalf of the owner. These services could include preparing contract documents with technical specifications, publicly or privately bidding the project, executing the contract, conducting continuous or limited inspections / supervision during construction, reviewing shop drawings and material submittals, preparing as-built plans, and cost-tracking on behalf of the owner.
As the Ownerâ€™s representative, we feel it is important to ensure the project is being constructed in accordance with the approved plans, specifications, and permitting requirements. Our technical expertise gives us the ability to anticipate and address any issues that may arise during construction to ensure the owner is getting the quality they deserve.
Sean founded Headwaters Hydrology in 2007. He is a licensed professional engineer and certified wetland scientist with experience in hydrology, hydraulic engineering, fluvial geomorphology, wetland delineation and mitigation design, hydraulic and sediment transport analyses, precipitation runoff modeling, scour analyses, defining flood plains, bridge and culvert design, design of stormwater management infrastructure, erosion and sediment control design and monitoring, and State and Federal environmental permitting.
Philip is a licensed professional engineer in New Hampshire, Vermont, and Maine. He is also a licensed septic designer and certified wetland scientist apprentice in New Hampshire. He has experience with design and permitting of commercial sites, municipal and private water and wastewater systems, residential subdivisions, condominium developments, bridge and culvert design, design of stormwater management infrastructure, State and Federal environmental permitting, and subsurface disposal systems.