Air Toxics Regulations Rulemaking Feedback - Spring 2025

The MPCA is planning to adopt new rules to implement and govern regulation of facilities that emit air toxics in Anoka, Carver, Dakota, Hennepin, Ramsey, Scott, or Washington County. Find more information on this rule making at MPCA’s Air Toxics Regulations webpage. 

 

As part of the early stages of developing the rules, MPCA is inviting you to provide feedback and would like specific feedback on the following questions within the criteria established in the applicable MN Session Law 2023. 


Please provide comments by 11:59pm April 30, 2025.


Please note: many questions reference material presented in the March 20 info session. A recording of this presentation will be available on the rulemaking webpage. https://www.youtube.com/watch?v=SUGc7V1VRfM



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Please respond to as many questions as you would like. You do not need to answer all of them

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Question 1 of 14

Should the MPCA limit/regulate air toxics where there are no inhalation health benchmarks established? Such as specific PFAS? If so, please provide those air toxics.

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Question 2 of 14

Are there sources that should be exempt from air toxics rules? If so, what criteria should determine this?

  • Type of industry?
  • Amount of individual pollutants?
  • Risk posed by pollutants?
  • Type of air permit held?
  • Proximity to residential areas

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Question 3 of 14

According to the statute, the rules must account for any exposure of residents in environmental justice areas to facilities’ air toxic emissions for the 7-county metro. How do you recommend accomplishing this? 

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Question 4 of 14

How much effort do you expect will be required to complete the screening threshold analysis? 

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Question 5 of 14

If you work for a facility, what actions would you be willing to take to get and stay below screening thresholds? For example, move/change stacks, other operational changes versus completing an AERA.

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Question 6 of 14

The MPCA is considering the method presented in the March 20 info session to develop the screening so far for this rulemaking. Are there other examples of methodologies you’ve seen or adjustments you’d recommend? 

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Question 7 of 14

Are there other sources for inhalation health benchmarks you’d recommend?

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Question 8 of 14

Where do you foresee there being issues in the screening process for regulated parties? What are those issues and how could they be mitigated or avoided? ?

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Question 9 of 14

Is there a preferred way to determine if a facility is above or below thresholds other than a screening spreadsheet tool? ?

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Question 10 of 14

For the screening threshold analysis, how many years of actual emissions data should be evaluated to determine if a facility is above or below thresholds? 1 year, 2 years, etc.?

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Question 11 of 14

Should facilities be required to notify surrounding residents at any point in this process? If so, at what point in the process should they be notified?

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Question 12 of 14

Should facilities be required to public notice any changes made and/or hold a public meeting? If so, at what point in the process should the public notice or meeting occur?

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Question 13 of 14

What other topics related to this rulemaking would you like more information on? Compliance and enforcement, community engagement, environmental justice, etc. 

 

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Question 14 of 14

Any other feedback you would like to share?

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