Title:

1,4 Dioxane Groundwater Contamination Remediation Design for Rennie Farm in Hanover New Hampshire

This project was made possible by GZA Geoenvironmental in conjunction with the Civil and Environmental Senior Capstone Design. Throughout the project, the design team was tasked with the design of a groundwater remediation program to clean up a 1,4 dioxane contamination. 1,4 dioxane is a laboratory chemical that was disposed of improperly near Rennie Road in Hanover, New Hampshire. There have been two projects to clean-up this chemical. The first focused on removing the source of contamination at the main site. The second involved prevention and mitigation of spreading from the site. When beginning this part of the project, the previous one had already been completed and the main site had wells and a treatment system running. Our design team was then tasked with designing a remediation system for the offsite location. This remedial design will focus on containment and treatment of 1,4 dioxane without impacting the existing wetlands. The remediation design consists of a pump and treat system; one pump will be placed in the area with the highest concentrations and two others will be implemented at the southern edge to make sure that the chemical doesn’t continue to move north (down gradient). After removing the contaminated water it will be pumped to a small treatment facility where the ambersorb 560 resin will treat the water. Once treated, the groundwater will be reinjected back into the ground.

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