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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Featured Topic: ECMPS
Read Latest Posts

Upcoming EDR Format and MATS Reporting Changes
Read this article for a review of these new reporting instructions to ensure you understand any changes that may need to be made in Monitoring Plan records, QA files, or emission files.

Continuous Emissions Monitoring 101: Extractive CEMS Umbilical
Read this article to learn more about extractive CEMS umbilical, from construction and installation to maintenance.

The Key to Efficient CEMS Equipment: Check Your Filters.
In this article, we outline the importance of inspecting your CEM Equipment Filters on a regular basis to ensure an efficient CEM System.

Continuous Emissions Monitoring 101: Extractive CEMS Probes
Read this article to learn more about extractive CEMS Probe processes, steps, and components from industry experts.

Continuous Emissions Monitoring 101: Extractive CEMS Flow Overview
Read this article to learn more about extractive CEMS flow processes, steps, and components from industry experts.

How to Enter Gross Calorific Value (GCV) & Ensure It Applies to Hourly Data
In this article, learn how to use StackVision and Prism to enter Gross Calorific Value (GCV) and ensure that it applies to your hourly data.

CEMS Probes, Flow Probes & Opacity Units: How To Locate
In this article, read about where you can locate your plant’s CEMS Probes, Flow Probes & Opacity Units on your stack unit & what EPA regulations apply to them.

ECMPS 2.0 Re-Engineering: Key Takeaways
In this article, we outline all of the latest updates with the ECMPS 2.0 tool for submitting monitoring plans, QA data, and emissions data.

QAQC Manuals: What You Need to Know
In this article, we will outline requirements and discuss the elements a good QAQC Manual typically includes.

Resubmitting Data to ECMPS
While resubmitting data can seem intimidating, it does happen from time to time. This article covers helpful tips for such a process.

Continuous Emission Monitoring System: Upgrade or Replace?
Are you upgrading or replacing a Continuous Emission Monitoring System? Read more to learn which one is right for your facility so your CEM System is up to date with the latest technology.

How to Avoid Errors With the Right ECMPS Evaluation Selections
Learn more about the valuable lessons our Reporting Engineers have learned while working with ECMPS to achieve the best results.
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

New Release: StackVision™ Version 7.2 Data Acquisition System
Industry-leading DAS StackVision Version 7.2 presents new features and provides enhancements and updates to existing features that will improve user efficiency.

New Release: RATAView™ Version 1.3 Now Available
RATAView Version 1.3 release offers new features and enhancements to help stack testers’ perform RATA tests accurately and efficiently.

New Release: Prism Version 1.7 Data Acquisition System
We’re excited to announce the release of Prism Version 1.7! This release provides new features designed to make CEMS compliance and monitoring easier and more productive than ever.

Control Analytics, Inc. and Monitoring Solutions Change Name to ESC Spectrum Corporation
ESC Spectrum, an industry leader in air emissions monitoring and compliance, acquired Monitoring Solutions in December 2021 and Control Analytics, Inc. in February 2022 to grow the company’s footprint in the Continuous Emissions Monitoring (CEM) market. On January 1, 2023 Monitoring Solutions and Control Analytics will be merged into ESC Spectrum Corporation to build on this successful alliance.
Discover Upcoming Events
4C Marketplace Conference
Hilton Austin Hilton Austin 500 East 4th Street, Austin, TXCome to 4C HSE to learn from the foremost experts in the field, and increase your skillset and marketability to future clients. Walk away with knowledge on regulatory changes, compliance strategies, and technological advancements. With over 100 presentations and 20-plus trainings, you won't want to miss out on this great learning experience.
Webinar: How Do I Evaluate My CEMS?
Join CEMS Proposal Engineer III Bobbi Greenwalt as she dives into how to evaluate your CEMS for ongoing reliable operation. She'll discuss the life expectancy of equipment and equipment obsolescence, […]
Analyzer Technology Conference
Galveston Island Convention Center 5600 Seawall Blvd., Galveston, TXThe Houston Analysis Committee is holding a conference and exposition focusing on analysis and measurement in the chemical processing industries. In the tradition of similar technical conferences, this event will […]