MWRD Slug Control Plans / RD-118 Discharge Permits

Slug Discharge Control Plans | Serving clients in Illinois, Wisconsin and Indiana.

We're not talking about gardening! A "slug discharge" is defined as any non-routine discharge into a sewer system that may bypass or interfere with local wastewater treatment facilities. Slug discharges include, but are not limited to, an accidental spill or a release of prohibited substances into a sewer system.

The Metropolitan Water Reclamation District of Greater Chicago (MWRD), as part of their Sewage and Waste Control Ordinance, requires some industrial facilities to prepare Slug Control Plans based on their use or storage of hazardous materials. Slug Control Plans are unique to each facility and include information on spill prevention measures, emergency response and reporting procedures, and employee training related to spill prevention and cleanup. Plans are re-evaluated by MWRD every two years and require certification by an Illinois-registered professional engineer.

With Bono Consulting's experience with MWRD, we are skilled in preparing, formatting, and certifying Slug Control Plans to meet their specific requirements, which streamlines the review process. We can assist industrial clients with preparing flow drainage diagrams, recommend spill containment solutions to meet MWRD requirements, help develop spill response procedures, and develop employee training outlines. The MWRD's Slug Control Plan requirements can be found on the District's website or at

Bono Consulting now also offers assistance and professional certification for MWRD's required Discharge Authorization Requests (DAR). This form is a required submittal for all Industrial Users under the District's Sewage and Waste Control Ordinance (SWCO) and the EPA's Code of Federal Regulations. In our process, we assemble the information for the RD-118 form and draw up the required Building and Property Layout plans and Process Flow diagrams. With our experience with MWRD, we are comfortable with the format and specific phrasing of information they expect to limit comments and accelerate the process for our clients.

Slug Discharge Control Plans Chicago | Slug Control Plans Illinois

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