AIR QUALITY SERVICES
CGRS is a leader in air quality services and we deliver compliance management solutions every day. We advocate for our clients and maintain professional relationships with local and state regulatory agencies. Whether it’s permitting, reporting, or deciphering regulation applicability, we perform thorough site assessments to empower our clients with the regulatory knowledge to operate responsibly.
Air Quality Services
- Site assessments
- Emissions inventory
- Emissions modeling
- Operating permits
- Recordkeeping and reporting
- EPA OOOO and OOOOa
- EPA Greenhouse Gas Reporting
- CDPHE Regulation 7
- Compliance audit support
- Expert testimony for compliance advisories and hearings
Field Services
Leak Detection and Repair (LDAR) Inspections
An infrared camera sees what the naked eye cannot. Using a Forward Looking Infrared (FLIR) GF320 optical gas imaging camera, VOC emission leaks can be identified from components regulated at the state and federal level. Our LDAR inspections are documented and managed with Connect, an operational compliance database created by CGRS with regulatory reporting in mind.
Audio/Visual/Olfactory (AVO) Inspections
An AVO inspection seeks to identify and document operational and non-operational equipment on-site in order to notify clients of non-compliance occurrences. CGRS performs audio, visual, olfactory (AVO) inspections to meet various regulatory requirements.
E&P Site-Specific Sampling (Oil, Natural Gas, Production Water)
Site-specific emission factors are generated from a field sample, allowing for the most accurate emission factor for air permitting of various sources. Bubble point technology and strict adherence to sampling protocols ensures a high level of sampling integrity.
Demonstrating Compliance with EPA Method 9 Opacity Testing
Accurate, defensible emissions monitoring is essential for maintaining compliance with CDPHE air quality regulations. A key component of many permits is opacity observation conducted in accordance with EPA Method 9, the standard visual method for quantifying emissions opacity from stationary sources.
Our team provides certified Method 9 opacity testing to support permit compliance and self-certification. This method relies on trained observers to visually assess opacity at defined intervals under strict field conditions. Because results depend on human observation, current biannual certification, proper field positioning, and adherence to Method 9 protocols are critical to data quality.
We have successfully performed Method 9 observations across a range of equipment and industries, including:
- Emergency stationary internal combustion engines (e.g., backup generators)
- Stationary internal combustion engines
- Crematorium and incineration equipment
Our approach emphasizes accuracy, regulatory alignment, and efficiency. We coordinate closely with facility operators to schedule observations under appropriate operating conditions, ensuring data collected is both representative and compliant with EPA and CDPHE expectations.
In addition to field observations, we provide clear documentation and reporting to support permit self-certification and regulatory inspections. Our familiarity with Colorado-specific requirements allows us to help clients navigate compliance confidently while minimizing operational disruptions.
As air quality regulations continue to evolve, having a trusted partner for Method 9 Opacity Testing is essential. Our team is equipped to deliver dependable results and support your facility’s ongoing compliance efforts.
Colorado Regulatory Compliance
It’s no secret that Colorado has some of the most stringent air quality regulations in the country.
Our compliance services include:
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- Storage Tank Emission Management System (STEM) Plan Preparation
- Colorado Regulation 7 Reporting
- Air Pollutant Emissions Notice (APEN) Submittal
- Operating and Maintenance Plan Preparation
- Air Pollutant Emissions Permit Submittal
