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Proposed bonding bills to help cities with climate resilience

The MPCA is seeking to develop a pilot grant program to fund climate resilient stormwater infrastructure in Minnesota communities. Minnesota continues to experience record breaking precipitation. Excess precipitation can lead to increased incidences of community flooding as a result of aging and undersized storm sewers. The existing funding options to address these issues are limited. In a survey taken by 260 public and private sector stormwater professionals, 98% were interested in doing a stormwater infrastructure project to increase climate resilience. With supportive feedback from Minnesotans, the program was included in the PCA’s capital budget request. In January, Governor Walz recommended $15 million for the program. This year’s legislative session is unusual, and funding is not guaranteed. If the bonding bill is passed, the program could be open to applicants as soon as fall 2020. Grants would fund projects to increase the storage, infiltration, and conveyance capacity of stormwater systems, as well as increasing the durability of stormwater systems. Pending approval of the bill, municipalities and public entities in partnership with municipalities would be encouraged to apply.

For more information about the bonding proposal, see page 15 of capital Budget Requests.

If there are updates, they will be posted to MMB’s Current Capital Budget page.


Stormwater pond maintenance: Revised Soil Reference Values (SRVs) for contaminate sediment disposal

High concentrations of polycyclic aromatic hydrocarbons (PAHs) have accumulated in some stormwater pond sediments around the state. Coal tar-based sealants were commonly applied to asphalt driveways, parking lots, and some recreational trails to protect the underlying asphalt. These sealants contain high concentrations of PAHs, which can be carcinogenic.

PAHs in coal tar-based sealants are released into the environment as they break down over time and can be transported via stormwater runoff. This is a concern for local governments responsible for managing stormwater ponds and disposing of sediments that have been excavated from them.

Revised benzo[a]pyrene (B[a]P) soil reference values (SRVs) protective of human health have been revised for commercial and industrial use on any site in Minnesota and replace the existing SRVs. Municipalities may be able to find more cost effective disposal options for excavated sediment from stormwater ponds. The revised SRV’s including the revised spreadsheet for calculating B[a]P equivalents and more information on coal tar-based sealants can be found here:

https://www.pca.state.mn.us/water/coal-tar-based-sealants


Draft MS4 permit update

The MPCA is about 80% through drafting written responses to the public comments received on the draft MS4 general permit (MNR040000), which was on public notice from November 12, 2019 through January 11, 2020. If you submitted public comments, the MPCA may contact you or your organization for further discussion in the near future. At this time, the MPCA anticipates the MS4 general permit will be reissued in June 2020.