Support of Petition Requesting the Gelman Sciences, Inc. Site Become a Federal USEPA Superfund Site


We Signatories support this petition (goo.gl/3yWwzB) requesting that Region V of the United States Environmental Protection Agency (USEPA) conduct a Preliminary Assessment for the Gelman Sciences, Inc. (Gelman) Site to become a federal USEPA Superfund Site with USEPA as the lead agency.


The Signatories are affected by the release and threatened release of the carcinogen 1,4-dioxane from the Gelman Site, in part, due to: public potable water supply contamination; private potable water well contamination; building vapor intrusion; natural resources contamination and degradation; and risk of additional human cancers through various routes of exposure to the contamination.

The former Gelman plant wastewater disposal practices have contaminated on-site and off-site groundwater with dioxane. The current dioxane groundwater plume is approximately four miles long and one mile wide and has contaminated local lakes, creeks, residential drinking water wells, and a City of Ann Arbor municipal water supply well. A large portion of the off-site dioxane plume concentration is very high (e.g., greater than 1,000 ug/L). The USEPA dioxane drinking water criterion is 0.35 ug/L at a 1 in a 1,000,000 excess lifetime cancer risk level.

The dioxane plume is migrating in northern, western, eastern and southern directions with no effective off-site hydraulic control. Numerous Scio Township and Ann Arbor Charter Township residential drinking water wells are down-gradient of the plume in the eastern, western and northern regions. The dioxane groundwater concentrations and migration present an imminent and substantial endangerment to public health.

Federal control of a cleanup is necessary to correct the serious and on-going threats to the public health and continuing Michigan Department of Environmental Quality delays and mismanagement on this vast groundwater contamination site which has adversely impacted the community.

(Enter your name & address below and click Submit at the bottom of this page.)
(This information will only be used in conjunction with the petition to USEPA goo.gl/3yWwzB)

    This is a required question
    This is a required question
    This is a required question

    Dioxane Plume (after 30 years of DEQ/DNR cleanup oversight)

    after 30 years of DEQ/DNR cleanup oversight