This stormwater project was to repair a failed and severely eroded outfall that drains stormwater from the Town Municipal Office Complex to Smith Hollow Creek. As part of the design project, Hoyle Tanner created and modeled the contributing drainage area to confirm hydraulic characteristics of the system. Final design replaced the failed corrugated metal pipe, incorporated a stone lined plunge pool to dissipate velocity and provide stabilization, and regraded the steep slope to allow access to the practice for operation and maintenance.The new design will prevent the continued erosion of sediment and with it, phosphorus loading to Lake Champlain. The project was constructed in summer 2021.
SERVICES
Hydraulic Analysis
Permitting
Final Design
Construction Administration
From the blog
Learn about ongoing projects and the innovative processes we employ for our clients.
Our people are the foundation of our success. Their expertise, creativity, and dedication drive the innovative solutions we deliver to communities across New England and beyond. We’re proud to...
Construction is imminent for wastewater treatment facility (WWTF) upgrades at a small town in New Hampshire! With over 4,000 residents in Allenstown, upgrades may not seem as critical as...
Summer always seems to fly by, and summer 2025 was no different. Part of what accelerated the time for me was being involved in a fast-paced, interesting project for...
What drew you to Hoyle Tanner? I met Steph and Maggie at a networking event at my school where I had a really good conversation with them. I learned...
We’re proud to announce that David Jeffery and Tyler Heinrich have earned their Licensed Surveyor in Training (SIT) status in New Hampshire! David and Tyler are the newest additions...
BIM’s Importance Building Information Modeling (BIM) is a significant advancement in modern design and construction, and Hoyle Tanner is a leader in this design for wastewater facilities in New...
We are excited to announce that Structural Engineer Katie Welch has been appointed Director at Large for the Structural Engineers of New Hampshire (SENH) Board of Directors. The SENH...
At Hoyle Tanner, we have been deeply involved in the planning and design phases of the Millinocket Municipal Airport project. This project is a significant part of the town's...
Project Overview Hoyle Tanner is providing environmental engineering design and construction services for the Brighton Wastewater Treatment Facility (WWTF) upgrade. The Brighton WWTF operates a small lagoon system with...
