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.
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Read Latest Posts

Enhance Sulfur Recovery Unit (SRU) Data Collection and Reporting 101
Learn how integrating our Data Acquisition System, StackVision, improves Sulfur Recovery Unit (SRU) emissions monitoring, ensuring EPA compliance and easing difficulties with data collection in refineries.

Monitoring Flare Gas Flows: Challenges and Solutions
This blog post examines the challenges and solutions of monitoring flare gas flows within industries like oil and gas, chemical processing, petrochemical, and refining. Explore how advanced technologies along with innovative monitoring systems, ensure accurate measurements, regulatory compliance, and operational efficiency.

Adapting to New EPA Ethylene Oxide Regulations: The Role of CEMS
This blog post examines a series of 2024 EPA Regulations on Ethylene Oxide and explores how Continuous Emission Monitoring Systems (CEMS) can help facilities navigate these new standards.

NSPS OOOOb & OOOOc Rules on Methane: What You Need to Know
Discover key insights on the EPA’s finalized NSPS OOOOb and OOOOc rules targeting methane emissions in the oil and natural gas sector. Learn about the stringent measures, compliance requirements, and industry impacts of these essential regulations effective November 2022.

Particulate Matter CEMS: Navigating New EPA Regulations
This article will walk you through the role of Particulate Matter (PM) Continuous Emissions Monitoring System’s (CEMS) in air compliance.

Refining Processes: Understanding Flare Requirements in EMACT
The Ethylene Manufacturing National Emission Standards for Hazardous Air Pollutants (NESHAP) under Subpart XX and YY establish requirements to control hazardous air pollutants (HAP) emissions from ethylene production units. This blog post focuses on the flare requirements specified in these regulations.

Gas Chromatography CEMS for Refining: Performance Specification 9
Learn more about 40 CFR Part 63 Subpart CC Performance Specification 9 to ensure accurate measurement of gaseous organic compound emissions. Performance Specification 9 (PS-9) establishes the requirements and procedures for Gas Chromatographic Continuous Emission Monitoring Systems (CEMS) in stationary sources.

Navigating Refining Regulations: 40 CFR Part 63 Subpart CC
Learn more about National Emission Standards for Hazardous Air Pollutants from Petroleum Refineries specifically on 40 CFR Part 63 Subpart CC. This blog post outlines the steps to comply with Subpart CC and how ESC Spectrum can equip your facility to streamline emission monitoring needs.

Retiring a CEMS: Ensuring a Smooth and Secure Process for Your Facility
Retiring a unit can be a long-winded and stressful process. This blog post gives some insight into how to make the process go smoothly.

Understanding Air Emissions Regulations for Industrial Cooling Towers & Heat Exchangers
Explore industrial process cooling towers and heat exchangers and their requirements under NSR in Texas and nationwide.

Upgrading Your CEMS in Refineries and Petrochemical Facilities
This blog post will explore the various upgrade options for CEMS in refining and petrochemical facilities, detailing the benefits of each.

Final Rules – MATS Residual Risk & Technology Review and Greenhouse Gas (GHG) Performance Standards
In May of 2024, the EPA finalized stricter rules for Mercury Air Toxic Standards (MATS) and Greenhouse Gas (GHG) Performance Standards. Key changes include tighter limits on particulate matter and mercury emissions, mandatory use of PM Continuous Emissions Monitoring Systems (CEMS), and new compliance timelines. Learn more about how these final rules can affect your facility.

Data Acquisition in Refineries: Plant Process Systems vs Data Controllers
This blog post will walk you through all the ways using the 8864 Data Controller in refineries can mitigate risks for your facility.

Electronic Data Report (EDR): A Guide to Effective Emissions Data Management
Dive into the world of Electronic Data Reports (EDRs) with our expert guide. Learn how to manage emissions data effectively, ensure compliance, and avoid errors. Explore practical tips and real-world solutions from industry experts.

Best Practices for Replacing Your Analyzers Under Part 75
This article explores the significance of stack analyzer replacement due to factors like aging, obsolescence, and poor performance. Gain valuable insights into the complexities of CEMS analyzer replacement and recertification, aiming to assist industrial and utility plants in maintaining compliance with air quality regulation 40 CFR Part 75.

Are Your CEMS Analyzers Obsolete?
This article will help you identify if your CEMS analyzers are obsolete, what this means for your facility, and how ESC Spectrum can help!

5 Tips to Help Maintain Your CEM Systems
This article explores CEM System maintenance tips to ensure compliance with EPA regulations including Calibration, Linearity Checks, Data Validation and more.

Decoding the World of Flare Gas Monitoring
This article explores the details of flaring, including types of flares, operations, applications, and monitoring methods.

Advantages of Outsourcing Reporting for Air Emissions Compliance
This article discusses the crucial role of outsourcing reporting in streamlining air emissions compliance for industrial operations. It highlights the complex regulatory landscape governed by regulations such as 40 CFR Part 60, Part 63, and Part 75. With the expertise of ESC Spectrum’s reporting team, facilities can ensure timely, efficient, and customized compliance solutions, mitigating risks, and maintaining data integrity while navigating regulatory changes seamlessly.

Best Practices for QA Test Management in Petrochemical Facilities
Learn how Petrochemical facilities’ can best utilize QAInsight software to ensure safety and compliance for their business.
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.
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