Iowa 2023 Environmental Compliance Calendar

February 07, 2023

Reporting Requirements(1)

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EPCRA – Tier II Reports (submit on E-Plan) March 1
Biennial RCRA Hazardous Waste Reports (LQG) (even years) March 1
Title V Air Permit Annual Certification of Compliance March 31
Title V Air Permit Semi-Annual Monitoring Report March 31
Title V Air Permit Annual Emissions Inventories March 31
Greenhouse Gas Reporting (submit with e-GGRT) March 31
Annual Hazardous Waste Report/Fees April 15
Minor Source Emission Inventory (MSEIQ)(2) May 15
EPCRA – TRI Form R/A (submit at July 1
NPDES Annual Fee Payment August 30
Air Permit – Semi-Annual Monitoring Report (Title V) Sept. 30

(1) Facility requirements should be verified to confirm due dates.
(2) Every 3 years. MSEIQ for emission year 2022 is due in 2023 for Central IA and portable plants (IDNR Field Offices 2 and 5).

Additional Environmental Requirements

Stormwater: General Permits (Nos. 1, 2, and 3) expire February 28, 2023. Permittees are required to comply with the newly issued permits. Permittees must resubmit a Notice of Intent prior to the expiration of their authorization to discharge. A SWPPP must be prepared or revised prior to the submittal of the NOI. The NOI can be submitted in writing or online at: Under the existing permit, conduct monitoring and training as required and at least annually.

Hazardous Waste: Small and large quantity generators and anyone who treats, stores, disposes of or transports hazardous waste in Iowa must file a hazardous waste form and pay the appropriate fee to the IDNR by April 15.

Wastewater (NPDES/SDS): Discharge reports are required to be submitted at regular intervals, per permit requirements. Those required to submit DMR forms must do so within 30 days of sampling.

SPCC Plan: SPCC Plans must be updated every five years or whenever there is a change in oil storage or spill potential.

Air Permits/Emission Inventories: Individual permits may have additional requirements. Submit Title V Annual Emissions Inventories and MSEIQs electronically on SLEIS.  Submit all construction permit applications; Title V operating permit applications & modifications; notifications of start of construction and start of operation electronically on Iowa EASYAir.

Contact Us

Christian New, P.E.

(licensed in NE and IA)

Client Development Manager/Senior Environmental Engineer
(531) 571 7105

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