Stories indexed with the term ‘MDEQ’

Residents Frustrated by Dioxane Decision

About 50 residents gathered at Ann Arbor’s Abbot Elementary School late last month to get an update – and raise concerns – over a new consent judgment that changes the cleanup requirements of 1,4 dioxane contamination caused by the former Gelman Sciences manufacturing plant in Scio Township.

Matt Naud

Matt Naud, the city of Ann Arbor's environmental coordinator, points to his home on a 3D map of the Pall-Gelman 1,4 dioxane plume. The map was constructed by Roger Rayle, a leader of Scio Residents for Safe Water, who brought it to the March 30 public meeting about a new consent judgment related to the plume. (Photos by the writer.)

Mitch Adelman, a supervisor with the Michigan Dept. of Environmental Quality’s remediation division, began the March 30 meeting by acknowledging the crowd’s reaction to the new agreement, which was issued earlier in the month without opportunity for public input. “I don’t expect anything I say or do tonight to alleviate your anger or frustration,” he said.

But Adelman noted that if a company like Pall – which owns the former Gelman Sciences site – proposes a remediation plan that complies with state law, “we’re obligated to accept it.”

For nearly three hours, Adelman and Sybil Kolon, MDEQ’s project manager for the Pall site, gave an update and answered questions about the new consent judgment, the history of the cleanup, and what residents might expect in the coming years. They were challenged throughout the evening by people who’ve been following this situation closely – most notably by Roger Rayle, a leader of Scio Residents for Safe Water and member of the county’s Coalition for Action on Remediation of Dioxane (CARD). Rayle has been tracking the dioxane plume for many years, and presented his own graphical renderings of data to the group.

The meeting was attended by several elected officials: Ann Arbor city councilmembers Stephen Rapundalo (Ward 2) and Mike Anglin (Ward 5); Ann Arbor Township supervisor Mike Moran; county commissioner Yousef Rabhi (District 11); and Sarah Curmi, chief of staff for state Sen. Rebekah Warren, whose district covers a large portion of Washtenaw County, including Ann Arbor and Scio Township, where the plume is concentrated. [Full Story]

City, MDEQ Agree: Argo Headrace Shut

Argo Dam headrace closure

Argo Dam headrace closure. Without the metal plate, water would flow from left to right (bottom to top) in the photograph. The greenish metal plate is wedged into the concrete slot in shim-like fashion. The slot continues along to the bottom of the channel. (Photo by the writer).

The city of Ann Arbor and the Michigan Department of Environmental Quality have moved towards resolving a dispute about what needs to be done to address problems with the earthen embankment next to Argo Dam. Late this summer, the MDEQ had issued an order to the city to close off the flow to the headrace and dewater it by Nov. 1. That order was based on concerns about the structural integrity of the earthen berm dating back several years.

The city had retained the law firm Bodman, LLP on the matter, and filed a contested case with the MDEQ, asking for a 90-day stay on the MDEQ’s order, which includes a stoppage of flow in the headrace, and its dewatering.

The order also includes other points, among them a need for the city to make a decision on the dam-in/dam-out question. Whether to keep Argo Dam in place or remove it has been the focus of community-wide conversation on that topic, which has taken place with great intensity over the last nine months, but which has a years-long history.

The MDEQ agreed to the city’s request for a stay on all elements of its order except for shutting the water flow to the headrace. The city has now complied with the MDEQ’s order to close the headrace. [Full Story]

MDEQ to Ann Arbor: Close Argo Millrace

Likely point of closure for the headrace (millrace) at Argo Dam.

Likely point of closure for the millrace (also known as the headrace or canal) at Argo Dam. (Photo by the writer.)

As part of an intro to an interview with the chair of the Ann Arbor Park Advisory Commission, Scott Rosencrans, which The Chronicle published on Aug. 25, we reported that a letter from the Michigan Department of Environmental Quality had been sent to the city of Ann Arbor. The MDEQ letter included an order to close the millrace at Argo Dam.

The communication from the state agency didn’t come out of the blue – it was a reply to a request sent to MDEQ by the city of Ann Arbor asking for an extension to a July 31, 2009 deadline for action on Argo Dam.

With the text of both letters now available, we take a look at those communications, after briefly considering some historical context. That context dates back to a 2004 letter from the MDEQ about toe drains in the earthen berm next to the dam, and includes formation of a study committee, a public engagement process that extended over most of the first half of this year, recommendations from the city’s Park Advisory Commission and Environmental Commission, and a city council work session.

A key date from the most recent MDEQ letter is Nov. 1, 2009, by which time it has ordered the city of Ann Arbor to close off and drain the millrace. But it leaves both the dam-in and dam-out options available to the city. On a dam-in scenario, the MDEQ wants the toe drains in the earthen berm repaired by Dec. 31, 2010. On a dam-out scenario, the MDEQ wants the removal completed by December 2012. Either way, the city is supposed to have its study of options completed by April 30, 2010.

Based on a Tuesday phone conversation with Matt Naud, the city’s environmental coordinator, one possible timeline for next steps would have the city council conducting a mid-September work session on the topic, with clear direction coming at the council’s second meeting in September. Whatever that direction from council is, said Naud, it’s going to start costing money to implement the next steps – on the order of five-figure dollar amounts at least. [Full Story]