The Source Blog
Welcome to The Source, ESC Spectrum's air emissions compliance blog.
After 50 years in the air emissions compliance industry, we’ve seen it all. We are passionate about helping people comply with clean air regulations and believe in sharing what we’ve learned with others. The Source blog provides explanations and advice regarding federal, state, and local regulations, Continuous Emissions Monitoring Systems (CEMS) best practices, audit checklists, case studies, news, and more. Want to suggest a blog topic or participate in a case study? We would love to hear from you.
Want email updates for blog posts? Follow the steps in this video to add our RSS Feed!
RSS Feed Link: https://escspectrum.com/feed/
Search The Source Blog
Read Latest Posts

How StackVision™ Helps Refineries With RSR Regulations
Learn how using a data acquisition system such as StackVision helps refineries meet extensive Refinery Sector Rule (RSR) regulations.

What is the EPA 40 CFR Part 60 Regulation?
40 CFR Part 60 regulations, otherwise known as New Source Performance Standards (NSPS), are pollution control standards issued by the U.S. Environmental Protection Agency. Adherence to these performance standards maintains the air quality in an area or region by reducing or eliminating pollutants’ release.

Bridging the RSR Compliance Gap: Part 2
This article appeared in Hydrocarbon Engineering’s August 2020 issue. This article focuses on US EPA approved alternative 131 (ALT 131). ALT 131 allows for total calibration cylinder net heating value (NHV) as an alternative to the PS-9 requirement that specifies calibration and calibration check individual component agreement.

NOx Correlation Testing Checklist
Facilities have in-house procedures for NOx Correlation Testing, as required by the Environmental Protection Agency. As with all procedures, preparation for NOx Correlation Testing is extremely important. Use this pre-testing checklist for assistance.

Bridging the RSR Compliance Gap: Part 1
In this article, which appeared in Hydrocarbon Engineering’s July 2020 issue, you’ll learn how, with the introduction of RSR and the copious amounts of data now required for compliance, many refineries are turning to a data acquisition system like Stackvision to meet regulatory requirements.

How to Perform Fuel Flow to Load or Gross Heat Rate Checks
Learn how to perform a quarterly stack flow-to-load (F/L) or gross heat rate (GHR) check on your fuel flow monitor.

Fuel Flow Meter Accuracy Checklist
Helpful advice on Fuel Flow Meter Accuracy Checks procedures to comply with Part 75 Appendix D requirements.

Breaking Down Part 75 Appendix A Span and Range Equipment Specifications
Learn about Part 75 Appendix A Span and Range Equipment Specifications with this general overview and review.

How to Perform Quarterly Linearity Checks
Learn tips on how to perform a linearity check as part of the required quarterly QA/QC on your CEMS Analyzer.

What is the EPA 40 CFR Part 63 Regulation?
The Part 63 emissions standards (NESHAP) are for hazardous air pollutants not covered by National Ambient Air Quality Standards (NAAQS) and emitted from natural and human-made sources, including volcanoes, wildfires, motor vehicles, industrial facilities, and oil refineries.

The Ultimate Guide to Automating Daily Validations
Learn How to Automate Daily Validations in your facility’s Continuous Emissions Monitoring Systems (CEMS)

Conducting Primary Element Inspection Reports
Helpful advice on conducting primary element inspection reports at least once every 20 calendar quarters using a baroscope.
Case Studies

StackVision™ Case Study: New Orleans Power Station
Learn how the New Orleans Power Station used StackVision for Reciprocal Internal Combustion Engine (RICE)-specific monitoring and reporting.

StackVision™ Case Study: Petrochemical Plant
Learn how a Petrochemical plant used the StackVision Data Acquisition System for a +200K ROI by reducing Emergency Work Orders by 50%.

CEMS Solutions Case Study: O-I
Learn how the Owens-Illinois (O-I) glass manufacturer used ESC Spectrum’s full suite of CEMS solutions to meet air compliance challenges.

StackVision™ Case Study: Calumet Refinery
Learn how Calumet refinery used the StackVision DAS for flare monitoring and compliance with the Refinery Sector Rule (RSR).
Latest News

Alliance Technical Group Acquires ESC Spectrum, Cementing Global Leadership in Continuous Emissions Monitoring (CEMS) and Data Acquisition Systems (DAS)
ESC Spectrum is now part of Alliance Technical Group, combining forces to deliver the most comprehensive CEMS and DAS compliance platform in the industry. This strategic acquisition strengthens our ability to serve customers with expanded resources, nationwide support, and end-to-end environmental solutions.

U.S. Environmental Protection Agency (EPA) Greenlights ESC Spectrum’s New Integrated Path CEMS (IP CEMS) Technology for Air Emissions Compliance
ESC Spectrum, a leading provider of environmental compliance solutions, is excited to announce the successful demonstration of Integrated Path CEMS for air emissions monitoring and reporting.

ESC Spectrum Launches Interim Reporting Services to Support Facilities with Temporary Reporting & Regulatory Help
ESC Spectrum is excited to introduce Interim Reporting Services, designed to help facilities maintain compliance during short-term staffing challenges. Our expert team provides support with data review, permit compliance, QA/QC management, and more—ensuring critical reporting obligations are met accurately and on time.

ESC Spectrum Academy Launches CEMS Training to Streamline Technician Education
Designed with technicians’ busy schedules in mind, the self-paced, online CEMS training empowers techs to learn best practices without interrupting daily operations.
Subscribe to Our Quarterly Newsletter!
Discover Upcoming Events
2025 ESC Spectrum Summit: Register Now!
Hilton Pensacola Beach 12 Via De Luna Drive, Pensacola, FL, United StatesMark your calendars and get ready for our 2025 User Group & Training. Join us at the Hilton Pensacola Beach Resort in sunny Pensacola, FL. More details to follow!