Understanding Part 60 and Part 63 Excess Emissions and Performance Summary Reports

In this article, we’ll dive deeper into Part 60 and Part 63 reporting requirements, specifically focusing on Semiannual Excess Emissions and Monitoring Systems Performance Reports. In our previous post, we covered Data Assessment Reports for Part 60—now, let’s tackle the who, what, when, and how of these semiannual submissions.

Who Is Responsible for These Reports?

The party responsible for submitting these reports may vary depending on the applicable subpart of the regulations you are subject to. Typically:

• Reports are submitted to your state agency, which is delegated by the EPA as the compliance authority.
• If your state agency is not the compliance authority, submissions should go to the appropriate EPA Regional Office.

Additionally, each report must include the name, title, and signature of the responsible official, certifying the accuracy of the information provided.

What Should Be Included in These Reports?

These semiannual reports consist of two primary components for each monitoring system.

1. Excess Emissions Summary: A record of any periods of excess emissions during the reporting period.
2. Monitoring System Performance Summary: An evaluation of how effectively the system is operating.

The report will include any excess emissions that occurred during the reporting period as well the duration of time when the monitoring system was not recording data while the unit was online, referred to as “downtime.”

Thresholds for Reporting:

• If downtime is under 5% and exceedances are under 1% of the total operating time over?the previous calendar quarter, then a summary of the downtime and exceedance events is all that is needed.
• If downtime exceeds 5% or if the total percentage of exceedances exceed 1% of the total operating time, a detailed report is required.

This must include:

• The start and end times of each event
• The cause of the downtime?
• Corrective actions taken to prevent recurrence

When Should These Reports Be Submitted?

40 CFR 60 Subpart A and 40 CFR 63 Subpart A both require these reports to be submitted semi-annually. However, more frequent reporting may be required by applicable subparts or by your permit. 40 CFR 60.7(e) and 40 CFR 63.10(e)(3)(ii) also contain language for how to potentially reduce the frequency when subparts require more frequent reporting.

How Can ESC Spectrum Efficiently Collect Data and Submit Excess Emissions and Monitoring Systems Performance Reports?

Make it easier with StackVision! Our industry-leading Data Acquisition System, StackVision, simplifies data storage and management, enabling efficient preparation of these reports. Additionally, our Reporting Team can:

• Regularly monitor your data.
• Generate reports ready for submission directly to your inbox.

With the right support, you can keep your sit compliant and focus on what matters most.?

For an in-depth look at Excess Emissions & Monitoring Systems Performance Reports, read our blog post.

Jennifer Waltrip - Regulatory and Reporting Engineer III, ESC Spectrum

Jennifer Waltrip has nearly 20 years of combined experience in environmental regulatory and permitting programs in water, wastewater, solid waste, and air. She has supervised state environmental permitting programs for air, solid waste, and wetlands. Jennifer also helped develop and provide OSHA training for regulatory agencies in Florida for 10 years. She has been with ESC Spectrum for two years and is currently a Regulatory and Reporting Engineer III on the Reporting Team.