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Pall Pollution

Years ago, the City sued Pall Life Sciences (PLS) seeking clean up of pollution eminating from PLS's Wagner Road facility. That suit was concluded with a rather timid settlement agreement between the City and Pall. We have up loaded the settlement agreement because it does contain some ongoing duties for Pall and some limitations on actions the City can take. Click here for the settlement agreement. Click here for an old Ann Arbor News article.

Dioxane is a chemical solvent stabilizer that can cause cancer in laboratory animals. Here in Ann Arbor, 1,4-dioxane was used as a solvent for cellulose acetate, a component of micro-porous filters produced by Gelman Sciences (now owned by Pall Life Sciences). In humans, 1,4 dioxane is a probable carcinogen and the routes of exposure are either ingestion, inhalation or contact with the skin. Animal studies of dioxane have relied upon acute exposure (a small number of exposures at high concentrations), and the effects of 1,4 dioxane in its diluted form over a long period of time (chronic exposure) are largely unknown. (This paragraph was copied from the Protect our Neighborhoods web FAQ)

Three important developments in this story are: (1) the DEQ is supposed to adopt new standards for 1,4 dioxane; (2) Pall has stopped operating its Wagner Road facility and may leave the country; (3) Judge Donald Shelton is on the verge of retirement (2014) and a new Judge will oversee this problem once he leaves the bench.

News Stories











Older Articles




Ann Arbor Chronicle April 7, 2011 article - Residents Frustrated by Dioxane Decision (this is an excellent history of the subject)

AnnArborDotCom March 30, 2011 article - State hosts public meeting in Ann Arbor to explain changes to Dioxane plume clean-up plan

Ann Arbor News January 7, 2004 article - Pall, Ann Arbor settle lawsuit.

Web Links

The Coalition for Action on Remediation of Dioxane (CARD) is a partnership of local governments and citizens that develops policies and strategies to address the problems caused by 1,4-dioxane released by Pall/Gelman.

Scio Residents for Safe Water is a citizens group concerned about the 1,4-dioxane plume. Its members include Roger Rayle who has been working on this issue for decades.

Protect Our Neighborhoods is a group of local residents within the west Ann Arbor neighborhoods that will be affected by the current clean-up plans. They are political activists dedicated to the preservation and protection of the health and welfare of their neighborhoods and families.

MDEQ page devoted to Gelman Pollution site
Here is the EPA's 1,4-Dioxane page (some pretty technical stuff)


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