Title:

New Road Stormwater Treatment and Lamprey River Outfall - Newmarket, NH

Underwood Engineers has recruited senior civil and environmental engineering students from the University of New Hampshire to develop stormwater strategies for nitrogen removal, addressing rainfall events affecting the Lamprey River, Great Bay Estuary, and Moonlight Brook in Newmarket, NH. The project site is on the town property along New Road, as well as the Newmarket Public Works Department located on Young Lane. The proposed solutions aim to divert flow from Moonlight Brook, which is prone to flooding, by creating a new outfall system and improving water quality by reducing nitrogen from non-point source pollution. This project includes reviewing the existing conditions, developing Best Management Practices (BMPs), selecting the optimal BMP alternative for implementation by utilizing a decision matrix, enhancing the chosen design, calculating the nitrogen removal, and developing a cost estimate. The watershed data, land use, and nitrogen loading were assessed. The three BMPs considered were rain gardens, grass swales, and tree box filters. The recommended alternative for implementation was grass swales. The grass swale will include a vegetated filter strip and a Filtrexx EnviroSoxx pollutant filter for improved pollutant removal. The cost of the grass swale is $439,120.

Name

Comment*

Comments are viewable only by submitter

Captcha*