Potash Brook and its watershed are located in Chittenden County, principally in the City of South Burlington, and encompass an area of approximately 7.13 square miles. Potash Brook was identified as not attaining water quality standards in accordance with Section 303(d) of the Federal Clean Water Act with the source of the impairment identified as excess stormwater runoff. In 2006, the EPA approved the flow based Potash Brook Total Maximum Daily Load (TMDL) which established targets for flow modification in the stream. The low flow target requires a 12.2% increase in stream flows during low flow conditions and the high flow target requires a 17.9% reduction in flows during the 1-year storm event.
In partnership with Watershed Consulting, Hoyle Tanner worked on a multi-phase stormwater planning effort to identify necessary stormwater Best Management Practices (BMPs) that could be implemented to achieve the flow restoration targets prescribed in the Potash Brook TMDL. Over 100 projects (new and retrofit) were conceptually identified and modeled with the intent of meeting the TMDL targets. The project required coordination with numerous private landowners and permitting authorities. As a component of the project, a detailed ranking matrix of proposed retrofit projects in Potash Brook and also City-wide was developed. The intent of this matrix was to identify the relative importance of each proposed stormwater project and to guide the City with project implementation timelines.
SERVICES
Drainage Analysis
Stormwater Treatment
Hydraulic Analysis
Regulatory Agency Coordination & Compliance
Study
From the blog
Learn about ongoing projects and the innovative processes we employ for our clients.
Tyler Heinrich has achieved a major professional milestone by earning his Licensed Land Surveyor (LLS) credential. His accomplishment highlights years of dedication, expertise, and a passion for delivering high-quality surveying services to clients and communities across the region.
Anyone who flies with any regularity has felt it: long lines, confusing circulation through a terminal, or flights delayed not because of weather, but because of airfield capacity issues....
Hoyle Tanner is excited to welcome Evan Raymond, PE, to our Ground Transportation Division as a Senior Transportation Engineer. Based in our Yarmouth, Maine office, Evan brings nearly a decade of experience delivering roadway and multimodal transportation projects across northern New England.
We are pleased to recognize our employees celebrating work anniversaries this month. Collectively, these individuals have contributed 109 years of service to Hoyle Tanner, demonstrating the dedication and commitment that drive our continued success. We thank them for their valuable contributions and congratulate them on their anniversaries!
Joshua Sklarsky joins Hoyle Tanner as the firm’s first Chief Technology Officer, bringing over 15 years of experience in technology leadership and innovation. Known for translating complex ideas into practical strategies, he will help drive digital transformation and strengthen the firm’s technology initiatives. His leadership comes at an exciting time of growth and investment in advanced technologies.
Drought is often understood as a period with too little rain, but its impacts extend far beyond dry landscapes. Drought status influences drinking water supplies, groundwater availability, infrastructure performance,...
Hoyle Tanner’s Maplewood Avenue Bridge Rehabilitation Project in Portsmouth, NH earned a Silver Engineering Excellence Award for its innovative approach to restoring and preserving the historic 1896 bridge.
At Hoyle Tanner, our strength starts with our people. Each year, our leadership team takes the opportunity to recognize individuals who are not only delivering great work for our...
