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dioxane

Steve Chrypinski/Michigan Radio

Issues & Ale visited Bill’s Beer Garden in Ann Arbor last night to discuss the Gelman Sciences 1,4 dioxane plume of toxic pollution making its way through the city’s groundwater.

Host Lester Graham led a panel of experts through the discussion. Together they answered residents’ questions and discussed ways to reduce risks associated with the contamination.

MLive reporter Ryan Stanton, who covers this issue, was one of the panelists. Stanton said the Department of Environmental Quality has been working to revise Michigan’s standard for dioxane in recent years.

West Park, Ann Arbor
matth / public domaine

State environmental officials say 35 private wells on or near Rose Drive in Ann Arbor had no detectable level of 1,4 dioxane after testing water samples.

It's a little bit of good news in the ongoing saga of Ann Arbor's dioxane-contaminated groundwater. 

A plume of water contaminated with the dangerous chemical is slowly moving under the city towards the Huron River.

Dioxane concerns prompt collection of groundwater samples

May 21, 2016
Ann Arbor's West Park
adaenn / flickr http://michrad.io/1LXrdJM

State officials want to collect water samples in the West Park area of Ann Arbor due to concerns that groundwater contaminated by a toxic chemical may be seeping to the surface.

The Ann Arbor News reports that the Michigan Department of Environmental Quality plans to start the groundwater collection next week.

The chemical is dioxane, an industrial solvent. Federal agencies say long-term exposure could cause health problems, including cancer.

Rebecca Williams / Michigan Radio

State officials talked about the Pall-Gelman dioxane plume at a town hall meeting in Ann Arbor last night. The meeting was hosted by State Rep. Jeff Irwin, D-Ann Arbor.

Washtenaw County

State Representative Jeff Irwin, D-Ann Arbor, will host a town hall this evening to talk about the Pall-Gelman dioxane plume.

The plume of 1, 4-dioxane has contaminated three square miles of groundwater under the city of Ann Arbor. The EPA says the solvent is likely to cause cancer.

The Ann Arbor city council has asked its Environmental Commission to review whether it should ask the U.S. EPA to order a Superfund cleanup of groundwater contamination.

A plume of groundwater contaminated with 1,4 dioxane from the city's now-closed Pall Gelman plant is spreading from the city limits towards Ann Arbor Township, Scio Township, as well as towards the Huron River.  

Scio Residents for Safe Water

The Michigan Department of Environmental Quality is proposing to change the state's standard for 1,4 dioxane to 7.2 parts per billion.

That's a ten-fold difference from the current standard of 85 parts per billion.  1,4 dioxane is a known carcinogen. 

The DEQ missed a December, 2015 deadline for issuing updated standards for 308 chemicals, including 1,4 dioxane. 

The agency has issued the new standard for 1,4 dioxane first, likely in response to an increased outcry from Ann Arbor city officials and residents. 

A kayak on the Huron River
Deb Nystrom / Creative Commons http://michrad.io/1LXrdJM

U.S. Rep. Debbie Dingell wants the Michigan Department of Environmental Quality to finish the job it started several years ago.

In an open letter to MDEQ director Keith Creagh, Dingell urged the state to finalize stricter cleanup standards for the chemical 1,4-dioxane.

Scio Residents for Safe Water

The Michigan Department of Environmental Quality is holding a public meeting tonight about changes to the 1,4-dioxane groundwater cleanup plan in Ann Arbor.

The meeting will be held at 7:00 p,m. at Abbot Elementary School, 2670 Sequoia Parkway, Ann Arbor.

From the MDEQ: