Pall Life Sciences' permit for water discharge — part of its groundwater cleanup facility — is up for re-issuance, according to the state.

The Michigan Department of Natural Resources and Environment is proposing to reissue the discharge permit. It is accepting public comments through May 3.

Pall Sciences, located at 600 S. Wagner Road in Scio Township, operates a facility to clean groundwater contaminated beneath the site by 1,4 dioxane. As part of the cleanup, it discharges the treated groundwater into a tributary of Honey Creek.

According to the U.S. Environmental Protection Agency, 1,4 dioxane produced in the U.S. has largely been used as a stabilizer for solvents. It is classified as a probable human carcinogen.

The draft permit includes some changes from the previously-issued permit, including the elimination of requirements for one pollutant, which has consistently been found at levels that aren't of concern. A storm water pollution prevention plan has been eliminated since industrial activities and industrial storm water exposure haven't occurred on the site.

For additional information regarding the draft permit, contact Alvin Lam at 517-335-4132 or e-mail lama@michigan.gov.

The permit application and other information can be found at http://www.deq.state.mi.us/owis or at the Water Bureau Jackson District Office, 301 East Louis Glick Highway in Jackson, or by calling 517-780-7690.

This file graphic from 2008 shows the contamination plume.

Tina Reed covers health and the environment for AnnArbor.com. You can reach her at tinareed@annarbor.com, call her at 734-623-2535 or find her on Twitter @TreedinAA.