October 30, 2026

By Lane Kimble

The Wisconsin DNR wants to hear from contractors about its updated concrete slurry disposal guidance.

The DNR issued a “fact sheet” this year detailing six options for disposal, pH testing, a shortened review window, and clarification on sidecasting.

The updates are the result of months of discussions between DNR, WisDOT, and industry groups including WTBA after the agency initially released its fact sheet in March.

The DNR made important revisions thanks to those discussions, most notably clarifying that nonmetallic mine sites would not need new permits.

WTBA Director of Engineering Matt Grove stressed to WisDOT and the DNR that contractors need consistency across projects and regions for disposal so projects can be properly bid.

You can review the updated draft and a form for approval of a slurry storage/evaporation structure via the links in this sentence. DNR says it is open to further potential updates based on additional feedback from WTBA and its members.

Comments can be sent to Matt Grove and/or WTBA General Counsel Jodi Jensen by Wednesday, Nov. 4.