- Skip Navigation

Note: This message is displayed if (1) your browser is not standards-compliant or (2) you have you disabled CSS. Read our Policies for more information.

Compliance and Technical Assistance Program


CTAP is your one-stop shop for environmental regulatory compliance needs. Staff with experience in all environmental programs are ready to provide technical and confidential compliance assistance on a wide array of environmental topics.

Upcoming Compliance Due Dates

  • September 15:
    • Third quarter payment due for NPDES Annual Bill, if paying in quarterly installments.
  • September 28:
    • Annual Green House Gas Reports are due to U.S. EPA if your facility is part of the 41 source categories in 40 CFR 98 (otherwise the report is due March 31)
      • Note: There is no need to submit the GHG Report to IDEM.
  • October 15:
  • October 20:
    • HW-020 Hazardous Waste Disposal Tax Return Form and Fee due for disposal of hazardous waste onsite through underground injection during the previous quarter.
  • October 28:
    • Quarterly Non-Compliance Report due for delegated water Pretreatment Programs (unless otherwise permitted to submit report in November).
  • October 30:
    • Air Quarterly Deviation and Compliance Monitoring Report due for July through September. Check your permit to determine if you are on a quarterly or semi-annual reporting schedule.
    • Quarterly Air Permit reports (e.g., usage reports) due for July through September.
  • October 31:

Complete List of Compliance Due Dates

Featured Topics

IDEM Offers Indiana Certified Wastewater Operators the Opportunity to Earn Four Technical Contact Hours

IDEM is offering an incentive of four technical contact hours toward the renewal of Indiana certified Wastewater Operator licenses for those who have not yet submitted their DMRs utilizing the NetDMR application and who enroll and successfully submit a DMR including the MMR/MRO utilizing NetDMR prior to December 31, 2014. This incentive is available once per operator and once per permit.

The U.S. EPA has proposed a new federal rule, the NPDES Electronic Reporting Rule, which will require all NPDES permit holders to submit/report NPDES compliance information electronically. This is an opportunity to start utilizing NetDMR and gain the incentive before it is federally mandated.

IDEM’s NetDMR webpage specifies more detailed information regarding the NetDMR tool and how to start utilizing it.

What Type of Solvent(s) Does Your Business Use?

Are you familiar with the solvent(s) being utilized within your cold cleaner degreaser operation?

Starting January 1, 2015, all persons who sell or purchase solvents for use in a cold cleaner degreaser operation will be required to keep the records specified within 326 IAC 8-3-8(c) including the true vapor pressure of the solvent. (The true vapor pressure is defined as “the equilibrium pressure exerted by a petroleum liquid as determined in accordance with methods described in American Petroleum Institute Bulletin 2517, “Evaporation Loss from Floating Roof Tanks,” 1962.”) A purchasing invoice or a copy of the manufacturer’s recommendation for the solvents utilized may include most of the required records.

In addition to speaking with Compliance and Technical Assistance Program (CTAP) staff, you may also visit the newly created Degreasing Operations webpage, for information on how to comply with state and federal regulations concerning degreasing, as well as tips to consider when evaluating solvent alternatives.