Air Toxics Testing in California: Multimetals, Hexavalent Chromium & Dioxin/Furans — 2026 Compliance Guide
California continues to maintain one of the most comprehensive air-toxics regulatory frameworks in the United States. For facilities that emit or may emit toxic air contaminants (TACs), accurate emissions measurement is increasingly important for permitting, compliance demonstrations, health-risk assessments and regulatory reporting.
For industrial facilities, Air Toxics Testing can involve specialized testing for multimetals, hexavalent chromium (Hex Chrome), dioxins/furans and other toxic pollutants. The exact testing obligation depends on the facility’s permit, applicable air-district rules, source type, pollutant and regulatory program. CARB specifically notes that California compliance-testing requirements vary by local agency and may use CARB, U.S. EPA or other published test methods.
With regulatory activity continuing through 2026, now is an important time for facilities to review their air-toxics testing programs.
Why Is Air Toxics Testing Important in California?
Toxic air contaminants are different from ordinary criteria pollutants because the regulatory focus is strongly connected to potential human-health impacts.
California’s AB 1807 program established a framework for identifying and controlling toxic air contaminants. CARB describes the program as a two-step process involving risk identification and risk management.
California’s identified toxic-air-contaminant list includes substances such as:
Hexavalent chromium
Arsenic compounds
Cadmium compounds
Lead compounds
Nickel compounds
Mercury compounds
Manganese compounds
Dioxins and furans
Benzene
Formaldehyde
Other toxic compounds
CARB’s current TAC information identifies hexavalent chromium and chlorinated dioxins/furans among substances for which no threshold level has been identified in its listing.
That is why reliable emissions data matters.
You cannot effectively manage what you have not accurately measured.
California Air Toxics Testing
What Is Air Toxics Testing?
Air Toxics Testing is the measurement and laboratory analysis of hazardous or toxic pollutants emitted from an industrial process, combustion source, control device or other emission point.
Depending on the facility, testing can include:
Multimetals Testing
Measurement of multiple metals potentially present in industrial emissions, such as:
Arsenic
Cadmium
Chromium
Lead
Nickel
Manganese
Mercury
Antimony
Beryllium
Cobalt
Selenium
Other regulated metals
Hexavalent Chromium Testing
Specialized measurement of Cr(VI) emissions from applicable chromium-related processes.
Dioxin/Furan Testing
Measurement of chlorinated dioxins and furans, which can be associated with certain combustion and industrial processes.
CARB identifies dioxins as toxic air contaminants and notes that they can originate from waste incineration, some chemical manufacturing and other industrial sources that burn fuel.
2026 California Air Toxics Regulatory Updates
1. South Coast AQMD Is Updating Toxic-Air-Contaminant Requirements
One of the most important 2026 developments is continued work on Proposed Amended Rule 1401 — New Source Review of Toxic Air Contaminants.
South Coast AQMD’s 2026 rulemaking materials show workshops and draft rule language during 2026, with proposed changes addressing new toxic air contaminants identified by California’s Office of Environmental Health Hazard Assessment and revisions to health values for existing compounds.
What does this mean for facilities?
A pollutant that previously received little attention could become more important when:
Toxicity information changes → health values change → risk calculations change → permitting/testing requirements may change.
Facilities should therefore avoid assuming that an old emissions profile automatically represents today’s regulatory requirements.
2. Rule 1469 and Hexavalent Chromium Requirements Have Become More Stringent
Hexavalent chromium remains one of California’s most closely scrutinized toxic air contaminants.
South Coast AQMD amended Rule 1469 — Hexavalent Chromium Emissions from Chromium Electroplating and Chromic Acid Anodizing Operations on December 5, 2025. The rule incorporates more stringent requirements associated with CARB’s Chromium ATCM, including lower emission limits and increased source-testing requirements for applicable operations.
South Coast AQMD’s regulatory advisory states that beginning January 1, 2026, functional chrome-plating facilities face more stringent requirements, including lower limits for applicable Tier III tanks and source testing every two years for Tier III tanks.
This makes Hex Chrome source testing particularly important for applicable chrome-plating and chromic-acid-anodizing facilities.
3. Source-Test Protocols Are Becoming More Important
For applicable Rule 1469 facilities, the source-testing process isn’t simply a matter of showing up with sampling equipment.
South Coast AQMD’s Rule 1469 materials specify situations where a source-test protocol must be submitted in advance. For certain Tier III tanks beginning January 1, 2026, the protocol must be submitted at least 60 days before the first applicable source test for approval.
Waiting until the last minute can create avoidable scheduling and compliance problems.
4. Air Toxics “Hot Spots” Activity Continues in 2026
California’s AB 2588 Air Toxics “Hot Spots” Program remains an important part of the regulatory landscape.
South Coast AQMD’s current 2026 AB 2588 activity includes approved health-risk assessments, facility public-notification activity and updated guidance documents. The District lists, for example, a January 2026 update to its emission-factor reference-source template and 2026 health-risk-assessment activity.
For facilities subject to AB 2588 requirements, emissions information can ultimately feed into health-risk assessments and risk-management decisions.
This is another reason why reliable source-test data is valuable.
Air Toxics Testing (Multimetals, Hex Chrome & Dioxin/Furans) in California | Energy Environmental Solutions, Inc.
Multimetals Testing: Why It Matters
Industrial processes can release several metals simultaneously.
A facility might not have a compliance concern involving only one metal. Depending on the source and applicable requirements, the emissions profile could contain multiple regulated metals.
Multimetals testing can therefore provide a more comprehensive picture of emissions.
Potential applications include:
Metal processing
Metal melting
Foundries
Plating
Aerospace manufacturing
Welding-related operations
Chemical manufacturing
Waste processing
Combustion processes
Manufacturing operations
Industrial furnaces
South Coast AQMD’s Regulation XIV contains multiple rules addressing toxic and non-criteria pollutants, including metal-related rules and Rule 1469 for hexavalent chromium.
Hexavalent Chromium Testing
Hexavalent chromium, commonly written as Cr(VI) or Hex Chrome, deserves special attention.
It can be associated with processes including:
Hard chrome plating
Decorative chrome plating
Chromic acid anodizing
Certain chromium-containing coating operations
Other applicable industrial processes
The regulatory environment around chrome operations has tightened.
South Coast AQMD’s 2025 Rule 1469 amendment incorporated the state’s more stringent chromium requirements, including phase-out provisions, lower emission limits and more frequent source testing for applicable operations.
If your facility handles chromium, don’t rely on an old testing schedule without checking the current rule.
Dioxin & Furan Testing
Dioxins and furans are another category where specialized testing is essential.
CARB explains that dioxins can be produced through certain combustion activities and chemical manufacturing processes and identifies dioxins as toxic air contaminants.
Potentially relevant sources can include:
Waste combustion
Incineration
Certain thermal processes
Chemical manufacturing
Industrial combustion
Certain metal-processing activities
Other processes identified by the applicable regulatory program
Dioxin/furan testing generally requires highly specialized sampling and laboratory analysis.
This is not a routine emissions test.
The sampling, sample handling, analytical procedures and quality-control requirements must be carefully planned.
What Can a Professional Air Toxics Test Evaluate?
Depending on the applicable regulation and test method, a testing program may evaluate:
Testing can help determine whether an air-pollution-control device is achieving its intended performance.
5. Improved Regulatory Preparedness
Facilities that maintain current emissions information are better positioned to respond to permit modifications and regulatory changes.
6. Greater Confidence for Management
Facility managers can make decisions using measured data instead of assumptions or outdated emission factors.
Challenges and Cons of Air Toxics Testing
Challenge
What It Can Mean for Facilities
Cost
Specialized testing and laboratory analysis can be expensive
Complexity
Toxic-air-contaminant methods can be technically demanding
Scheduling
Testing may need coordination with production
Downtime
Some tests require specific operating conditions
Protocol Requirements
Certain programs require advance protocol preparation/submission
Laboratory Requirements
Applicable rules may require qualified or approved laboratories
Corrective Action
Elevated results may require investigation or additional testing
South Coast AQMD operates a Laboratory Approval Program under which independent laboratories/source-testing firms are evaluated method-by-method for personnel, equipment, documentation, QA and related criteria.
Why Choosing the Right Testing Company Matters
Air toxics testing is not simply about collecting a sample.
The complete process can involve:
Regulatory Review
↓
Test Protocol Development
↓
Sampling Plan
↓
Field Testing
↓
Sample Handling
↓
Laboratory Analysis
↓
QA/QC Review
↓
Engineering Calculations
↓
Compliance Report
A mistake at any stage can affect the usefulness of the final results.
That’s why industrial facilities should work with an experienced environmental testing provider familiar with California air-district requirements and source-testing procedures.
How EES Helps Industries With Air Toxics Testing
Energy Environmental Solutions, Inc. (EES) can help industrial facilities manage specialized air-toxics testing programs.
1. Multimetals Testing
EES can support testing programs for applicable metal emissions, including multi-metal analysis.
2. Hex Chrome Testing
For applicable chromium-related operations, EES can support hexavalent chromium emissions testing and associated compliance programs.
3. Dioxin/Furan Testing
EES can support specialized testing programs involving dioxins and furans for applicable industrial sources.
4. Test Protocol Development
Before testing begins, EES can help develop a protocol addressing:
Applicable regulations
Sampling methods
Sampling locations
Operating conditions
Analytical methods
QA/QC
Reporting requirements
5. Source Testing
EES can coordinate and perform applicable source-testing services based on the requirements of the relevant air district and permit.
6. Laboratory Coordination
Specialized air-toxics testing requires appropriate analytical capabilities. EES can coordinate applicable laboratory analysis and documentation.
7. Compliance Reporting
The final objective isn’t just a laboratory result.
It is a defensible compliance record.
8. Regulatory Support
EES can help facilities understand how their testing program fits within applicable California air-quality requirements.
Industries That May Need Air Toxics Testing
Potential clients include:
Metal Plating Facilities
Chrome Plating Facilities
Aerospace Manufacturers
Metal Fabrication Facilities
Foundries
Chemical Manufacturers
Waste Processing Facilities
Industrial Combustion Facilities
Manufacturing Plants
Coating Operations
Refineries
Power Generation Facilities
Thermal Processing Facilities
Incineration Operations
Other Facilities Subject to TAC Requirements
CARB’s Air Toxics Tool notes that different industries can be associated with different toxic pollutants and that the listed substances are not necessarily a complete list for every industry.
2026 Air Toxics Compliance Checklist
Before your next test, ask:
☑ What toxic pollutants could my source emit?
☑ What does my current permit require?
☑ Does my air district require source testing?
☑ Is multimetals testing required?
☑ Is Hex Chrome testing applicable?
☑ Are dioxin/furan emissions relevant to my process?
☑ Is a source-test protocol required?
☑ Does the protocol require advance agency approval?
☑ Is a qualified/approved laboratory required?
☑ Is my previous test still representative?
☑ Has the equipment or production process changed?
☑ Have applicable rules changed for 2026?
Why You Should Not Wait Until the Testing Deadline
Imagine discovering two weeks before your regulatory deadline that:
Your sampling ports need modification.
Your old protocol is no longer appropriate.
The applicable test method has changed.
Your laboratory needs advance scheduling.
Your facility cannot achieve the required operating condition.
The air district requires advance protocol submission.
Now your testing deadline becomes a business problem.
Early planning turns regulatory pressure into a manageable project.
For specialized testing such as Hex Chrome or Dioxin/Furan, advance coordination is especially important.
Stack Testing
Why 2026 Is the Right Time to Review Your Air Toxics Program
California’s toxic-air-contaminant regulatory environment continues to evolve.
South Coast AQMD’s 2026 rulemaking schedule includes activity surrounding Rule 1401, toxic-air-contaminant health values and additional toxic-emission controls.
At the same time, Rule 1469 requirements for applicable chromium operations have become more stringent, with increased attention to source testing.
The practical takeaway for facility owners and EHS managers is simple:
Don’t manage today’s emissions with yesterday’s compliance assumptions.
Review your:
Permit + Rules + Equipment + Testing Schedule + Test Methods + Emissions Data
Turn Air Toxics Compliance Into a Competitive Advantage
Compliance is often treated as a cost.
But smart companies can look at it differently.
Reliable emissions testing can help you:
Identify problems early → improve process control → reduce compliance uncertainty → maintain better records → respond faster to regulatory changes
That’s a much stronger position than waiting for an inspection or regulatory deadline.
Air Quality Compliance Test Protocol Development in California: 2026 Guide, Latest Updates & How EES Helps Industries
California’s air-quality compliance environment is becoming increasingly technical. For facilities subject to source testing, developing the correct Air Quality Compliance Test Protocol before testing can be just as important as performing the test itself.
A source test is not simply “collect a sample and issue a report.” The protocol establishes what will be tested, how it will be tested, where samples will be collected, what operating conditions must be maintained, which test methods will be used, what quality-control procedures apply, and how compliance will be demonstrated.
California Air Resources Board (CARB) confirms that compliance-testing requirements vary by local agency and may use CARB, U.S. EPA or other published test methods. South Coast AQMD likewise maintains a dedicated collection of source-test methods and protocols for regulated facilities.
For industrial facilities planning a source test in 2026, the message is straightforward:
A poorly prepared protocol can create a poorly defensible compliance test.
Air Quality Compliance Testing Services California
What Is an Air Quality Compliance Test Protocol?
An Air Quality Compliance Test Protocol is a technical testing plan prepared before a regulatory source test.
It translates the applicable rule and permit requirements into a practical testing program.
Depending on the source, a protocol may define:
Source and emission point identification
Equipment and process description
Applicable regulatory requirements
Pollutants to be measured
Test methods
Sampling locations
Sampling ports
Traverse points
Sampling duration
Number of test runs
Operating conditions
Fuel or material usage
Production rate
Control-device operating parameters
Calibration requirements
QA/QC procedures
Laboratory analysis
Calculations
Data reporting
Compliance determination
South Coast AQMD explains that source testing measures actual emissions that may be used to determine compliance with emission limits or, for toxic emissions, to support health-risk assessments. The District also notes that third-party contractors prepare source-test protocols detailing the testing program.
Why Is Test Protocol Development Important in California?
Imagine spending thousands of dollars preparing for a source test, coordinating production, arranging access to the stack, shutting down equipment, collecting samples and waiting for laboratory results—only to discover that the testing conditions did not adequately demonstrate compliance.
If any of these three pieces is disconnected, the final result can become difficult to defend.
California’s regulatory framework recognizes the importance of approved testing procedures. CARB states that local compliance-testing requirements can involve published CARB methods, U.S. EPA methods or other published methods.
2026 California Regulatory Update: Source Testing Remains a Major Compliance Activity
Current 2026 South Coast AQMD materials show that source testing remains an active part of the District’s regulatory program.
The District’s Stationary Source Committee materials describe source testing as a measurement of actual emissions used for compliance determinations and health-risk assessments, with third-party contractors preparing source-test protocols.
South Coast AQMD also maintains an extensive Methods & Procedures program containing source-test methods and protocols, including protocols for combustion sources, VOC capture efficiency and RECLAIM-related boiler testing.
This matters because protocol development is not a generic paperwork exercise. The protocol needs to match the applicable regulatory method and the physical characteristics of the source.
Cement Plant Stack Testing
2026 Update: Toxic-Air-Contaminant Testing Is Increasingly Important
California’s air-quality programs continue to place significant attention on toxic air contaminants.
CARB’s current research priorities include identifying emerging air toxics of concern and developing monitoring protocols for pollutants that may become priorities for future air-toxics monitoring.
At the local level, South Coast AQMD’s ongoing rule-development and enforcement activities also demonstrate the importance of toxic-emission measurements.
For example, South Coast AQMD’s 2026 materials concerning chromium-related sources include source-testing requirements and tighter emission demonstrations for applicable operations.
For facilities handling metals, chromium compounds or other toxic substances, protocol development therefore needs to consider not only what pollutant is being measured, but also the analytical sensitivity, sampling approach and regulatory reporting requirements.
2026 Update: Rule 1469 Shows Why Protocols Matter
One of the clearest examples is South Coast AQMD Rule 1469, addressing hexavalent chromium emissions from chromium electroplating and chromic-acid anodizing operations.
Proposed amendments have included more stringent requirements and increased source-testing frequency for certain operations.
The proposed Rule 1469 language also specifies detailed information that may need to be included in a source-test protocol, including:
Source-test criteria
Assumptions
Required data
Target concentrations
Preliminary analytical information
Sampling parameters
This is a useful example for every facility:
The protocol can be a technical compliance document—not merely a scheduling form.
What Should an Air Quality Test Protocol Include?
The exact contents depend on the rule and source, but a professional protocol commonly addresses the following.
1. Facility and Source Identification
The protocol should clearly identify:
Facility name
Facility location
Permit number
Equipment ID
Emission point
Process
Control device
Test date
This prevents confusion when a facility has multiple similar emission points.
2. Description of the Process
The testing agency needs to understand what is actually happening during the test.
For example, a protocol for a thermal oxidizer might describe:
Production process → VOC-containing exhaust → capture system → oxidizer → stack
The final calculation should correspond to the applicable regulatory standard.
Why Protocol Approval Can Matter
Some California regulations require the source-test protocol to be submitted to the applicable air district before testing.
For example, CARB’s regulatory materials include requirements under certain programs for submitting a pre-test protocol to the air district before conducting a source test.
South Coast AQMD’s regulatory materials likewise contain rules requiring source-test protocols and, in some circumstances, approval before the test is performed.
Therefore:
Never assume that the testing contractor can simply arrive and begin sampling.
The applicable rule and permit should be reviewed first.
California Source Test Protocol Services
Common Problems With Poor Test Protocols
Problem 1: Wrong Test Method
A facility may identify the pollutant correctly but select an inappropriate or outdated method.
Result:
The test may not provide the intended compliance demonstration.
Problem 2: Incorrect Operating Condition
A test performed at the wrong production rate may fail to demonstrate compliance under the required conditions.
Problem 3: Missing Sampling Information
If stack dimensions, port configuration or traverse information are incomplete, the testing team may face problems on test day.
Problem 4: Permit and Rule Do Not Match
Sometimes facility personnel rely on an old permit or historical test report without checking current requirements.
Problem 5: Equipment Has Changed
A burner replacement, process modification, pollution-control upgrade or production change can make an older protocol unsuitable.
Problem 6: Insufficient QA/QC Documentation
Even good measurements can become difficult to defend if required QA/QC information is missing.
Air Quality Compliance Test Protocol Development: Pros & Cons
Pros
Cons / Challenges
Creates a clear testing roadmap
Requires engineering expertise
Reduces testing-day surprises
Requires advance planning
Connects testing to permit requirements
Rule requirements can be complex
Helps select appropriate methods
Some protocols need agency approval
Improves data defensibility
Additional preparation cost
Identifies operating conditions in advance
Facility operations may need coordination
Supports accurate compliance reporting
Changes may require protocol revision
Helps prevent invalid testing
Testing deadlines can be tight
When Should a Facility Develop a Test Protocol?
Don’t wait until the day before the test.
A facility should consider starting protocol development when:
A source-test deadline is approaching
A new permit is issued
A permit is modified
Equipment is installed
A burner is replaced
A control device is modified
Production changes
Fuel changes
A new pollutant becomes regulated
A regulatory amendment changes testing requirements
A previous source test failed
An agency requests additional testing
A health-risk assessment requires updated emissions information
Which California Industries Need Test Protocol Development?
Potentially affected facilities include:
Manufacturing plants
Chemical facilities
Petroleum facilities
Refineries
Metal-processing plants
Aerospace facilities
Automotive facilities
Food-processing plants
Pharmaceutical manufacturing
Power-generation facilities
Waste-management facilities
Landfills
Coating operations
Printing facilities
Boiler operations
Industrial furnaces
Thermal oxidizer operations
RTO facilities
Chrome-plating facilities
The actual testing requirement depends on the applicable air district, permit and source.
How EES Helps With Air Quality Compliance Test Protocol Development
Energy Environmental Solutions, Inc. (EES) can help facilities turn complicated regulatory requirements into a structured testing plan.
1. Regulatory Review
EES can review applicable rules and permit conditions to identify the testing requirements.
EES can coordinate testing requirements with facility personnel to minimize operational disruption.
4. Sampling Location Evaluation
The team can review stack and duct configurations to identify appropriate sampling locations.
5. Operating-Condition Planning
EES can help establish the production/load/fuel conditions required during the test.
6. Method Selection
The testing program can be designed around the applicable CARB, EPA, South Coast AQMD or other approved method.
7. Compliance Testing
After protocol development, EES can support the actual source-testing program.
8. Engineering Calculations
Raw analytical data can be converted into the appropriate emissions units and compliance metrics.
9. Test Report Preparation
EES can prepare technical documentation describing the testing methodology, results, calculations and compliance determination.
10. Corrective-Action Support
If results indicate an emissions problem, EES can help identify potential technical causes and evaluate the need for additional testing or engineering work.
Why Choose a Professional Test Protocol Developer?
The cheapest protocol is not necessarily the least expensive option.
Suppose a facility spends $5,000–$20,000 or more coordinating a complex source test, but the protocol fails to address an important regulatory requirement.
The company may then face:
Retesting + additional laboratory costs + production disruption + engineering time + regulatory delays
A properly developed protocol can reduce that risk by identifying potential problems before the sampling team arrives.
Think of it like an aircraft flight plan.
The test itself is the flight.
The protocol is the flight plan.
You don’t want to discover the route, fuel requirements and destination after takeoff.
Identify pollutants, emission points and applicable methods.
↓
STEP 3 — DEVELOP
Prepare the detailed source-test protocol.
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STEP 4 — COORDINATE
Coordinate facility operations, access, production and agency requirements.
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STEP 5 — TEST
Conduct the source test according to the approved requirements.
↓
STEP 6 — ANALYZE
Perform laboratory analysis and QA/QC evaluation.
↓
STEP 7 — CALCULATE
Convert measurements into the required emissions units.
↓
STEP 8 — REPORT
Prepare and submit the source-test report as required.
Cement Plant Stack Testing
2026 Compliance Strategy: Test Smarter, Not Just Faster
The regulatory environment is becoming more sophisticated.
South Coast AQMD’s current Methods & Procedures resources include dedicated protocols for different applications, while CARB continues to maintain approved compliance-testing methods and contractor requirements.
At the same time, active regulatory changes—including toxic-air-contaminant programs and source-specific requirements—can affect testing obligations. South Coast AQMD’s 2026 materials show continuing activity around source testing, toxic emissions and compliance evaluation.
For facility managers, this means one thing:
Your old source-test protocol should not automatically be reused for the next test.
Before every significant test, ask:
Has the rule changed?
Has the permit changed?
Has the equipment changed?
Has the process changed?
Has the test method changed?
Has the required operating condition changed?
If the answer to any of these is yes, the protocol should be reviewed.
Air Quality Compliance Test Protocol Checklist
Before submitting or conducting your next source test, verify:
Current facility permit reviewed
Current applicable rule reviewed
Emission points identified
Pollutants identified
Correct test methods selected
Sampling locations confirmed
Stack/duct dimensions verified
Operating conditions established
Production rate documented
Control-device parameters identified
QA/QC requirements established
Laboratory requirements confirmed
Agency notification requirements checked
Protocol approval requirements checked
Test schedule coordinated
Reporting requirements confirmed
The Bottom Line
Air Quality Compliance Test Protocol Development is the foundation of a defensible source-testing program.
California’s regulatory framework gives air districts significant responsibility for implementing and enforcing air-quality requirements, while CARB confirms that compliance-testing requirements vary by local agency and may rely on CARB, EPA or other approved methods.
In 2026, with continuing rule development, source-testing activity and increasing attention to toxic and criteria pollutants, facilities should treat protocol development as a technical compliance function—not administrative paperwork.
The goal isn’t simply to complete a test.
The goal is to produce reliable data that can demonstrate compliance.
Need Air Quality Compliance Test Protocol Development in California?
Energy Environmental Solutions, Inc. (EES) provides professional support for:
Thermal Oxidizer Testing in California (2026): Latest Updates, Pros, Cons & How EES Helps Industries Stay Compliant
California continues to maintain some of the nation’s most demanding requirements for controlling VOC and toxic air contaminant emissions from industrial operations. For facilities using thermal oxidizers, regenerative thermal oxidizers (RTOs), catalytic oxidizers, afterburners, or related combustion-control equipment, performance testing can be an important part of demonstrating that the control device is actually achieving the required emissions-control performance.
A key 2026 development is that South Coast AQMD is actively evaluating control technologies and emissions requirements across several industrial sectors. Its March 2026 staff report for aerospace coating operations, for example, discusses thermal oxidizers as VOC and toxic-air-contaminant controls and notes that they can achieve destruction efficiencies above 98% in appropriate applications. At the same time, the report highlights an important challenge: thermal oxidation of certain compounds can create secondary pollutants such as HCl and HF, potentially requiring additional control equipment.
For industrial facilities, this means thermal oxidizer testing should not be viewed simply as a one-time emissions test. Temperature, residence time, combustion conditions, VOC destruction efficiency, NOx, CO, and potentially other pollutants all need to be considered according to the applicable permit and Air District requirements.
Energy Environmental Solutions, Inc. (EES) helps California industries with Thermal Oxidizer Testing, VOC Testing, Source & Stack Testing, NOx and CO Testing, Compliance Test Protocol Development, CEMS/RATA/CGA, Engineering Studies, and Regulatory Reporting.
What Is Thermal Oxidizer Testing?
A thermal oxidizer destroys VOCs and other combustible pollutants by oxidizing them at elevated temperatures.
Testing can be used to determine whether the equipment is achieving the required destruction or removal efficiency (DRE) and whether emissions from the control device comply with applicable permit or regulatory limits.
Depending on the facility and permit, testing may evaluate:
VOC destruction efficiency
VOC concentration
NOx emissions
CO emissions
CO₂
O₂
Flow rate
Temperature
Residence time
Combustion conditions
Particulate matter
Toxic air contaminants, where applicable
The exact testing requirements are facility- and permit-specific. There is no single California-wide thermal-oxidizer test that automatically applies to every facility.
Latest California Thermal Oxidizer Updates for 2026
1. South Coast AQMD Is Actively Evaluating Thermal Oxidizers
One of the clearest 2026 regulatory developments comes from South Coast AQMD’s work on Proposed Amended Rule 1124, covering aerospace assembly and component manufacturing operations.
The March 2026 staff report evaluates thermal oxidizers as a potential control technology for VOC and toxic-air-contaminant emissions. South Coast AQMD states that thermal oxidizers can achieve destruction efficiencies exceeding 98% under suitable operating conditions.
However, the agency also identifies limitations for some compounds. For example, thermal oxidation of chlorinated and fluorinated compounds can generate acidic byproducts such as hydrochloric acid and hydrofluoric acid, potentially requiring scrubbers and additional controls.
What this means for industry: choosing a thermal oxidizer is not simply about achieving a high VOC destruction percentage. Facilities must also evaluate the pollutants created by the combustion process.
2. 2026 Rulemaking Continues Across California’s Industrial Air Sector
South Coast AQMD’s 2026 regulatory agenda includes numerous proposed amendments and new rules addressing particulate matter, toxic air contaminants, monitoring, New Source Review, and other air-quality requirements.
This broader regulatory activity matters to facilities operating thermal oxidizers because a control device may address one pollutant while creating or affecting another.
For example, South Coast AQMD’s emissions-reporting guidance for thermal oxidation notes that when VOC vapors are destroyed through thermal oxidation, NOx, SOx, CO, PM, and toxic air contaminants may also be generated. The agency encourages operators to use site-specific test results where available for emissions calculations.
That makes comprehensive testing increasingly valuable.
3. Source Testing Can Be a Permit Requirement
Thermal oxidizer testing requirements are often written directly into individual facility permits.
For example, a Bay Area Air Quality Management District permit requires a thermal oxidizer to be source tested annually for VOC control efficiency as well as NOx and CO emissions, with results reported to the District. The permit also specifies continuous temperature monitoring and recordkeeping requirements.
This demonstrates an important point:
Thermal oxidizer testing frequency and pollutants are determined by the applicable permit and regulatory requirements.
Some facilities may require annual testing; others may have different schedules or testing triggers.
4. California Facilities Continue Using Performance Testing to Demonstrate Control Efficiency
South Coast AQMD Hearing Board documents also show real-world applications of thermal oxidizers.
In a 2025 case involving a petroleum facility, a portable thermal oxidizer was allowed temporarily to replace an afterburner, subject to conditions including a minimum overall VOC control efficiency of 99% and a performance test shortly after startup to demonstrate compliance.
Although that order was issued in 2025, it remains a useful example of how regulators can use performance testing to verify control-device performance during temporary or modified operating conditions.
Why Is Thermal Oxidizer Testing Important?
A thermal oxidizer may look like a simple solution:
VOC-containing gas → high-temperature combustion → cleaner exhaust
But real-world performance depends on several variables.
If the temperature is too low, residence time is inadequate, mixing is poor, or the system is overloaded, destruction efficiency can decline.
Testing helps answer the critical question:
Is the thermal oxidizer actually performing as required under real operating conditions?
Key Parameters That Can Affect Performance
Temperature
Thermal oxidation requires sufficient temperature to initiate and maintain the oxidation reaction.
Temperature requirements vary depending on the equipment, pollutants, permit, and process.
Residence Time
The contaminated gas needs enough time inside the combustion chamber for the oxidation reaction to occur effectively.
Turbulence & Mixing
Good mixing of combustion air and contaminated gas is essential for consistent oxidation.
South Coast AQMD specifically identifies temperature, residence time, and turbulence/mixing as important design factors for thermal oxidizers.
VOC Loading
An oxidizer operating with a highly variable VOC concentration may behave differently from one receiving a stable waste stream.
Testing under representative operating conditions is therefore critical.
Pros of Thermal Oxidizer Testing
1. Demonstrates Compliance
Testing can provide documented evidence that the control device is meeting applicable permit requirements.
2. Verifies VOC Destruction Efficiency
Testing can determine whether the thermal oxidizer is achieving its required VOC control efficiency.
3. Identifies Performance Problems
Testing can reveal declining control efficiency, combustion problems, unusual emissions, or operational conditions requiring investigation.
4. Supports Permit Compliance
Reliable source-test results can support permit renewals, modifications, inspections, and regulatory reporting.
5. Improves Environmental Performance
Properly operated thermal oxidizers can substantially reduce VOC emissions and associated air-quality impacts.
6. Provides Better Emissions Data
Site-specific testing can provide more defensible information than relying exclusively on generic emission factors.
Cons & Challenges of Thermal Oxidizer Testing
Thermal oxidizer testing also comes with challenges.
Testing Costs
Professional source testing requires specialized equipment, trained personnel, laboratory analysis where applicable, and technical reporting.
Production Scheduling
Testing may need to be performed during specific operating conditions, making coordination with production important.
Complex Testing Requirements
VOC destruction efficiency testing can require simultaneous inlet and outlet measurements, operating-condition documentation, and carefully designed sampling procedures.
Secondary Pollutants
Thermal oxidation can produce NOx, CO, SOx, PM, and potentially toxic or acidic combustion byproducts, depending on the waste stream. South Coast AQMD specifically highlights these considerations in its emissions-reporting guidance.
Equipment Maintenance
Burners, combustion chambers, temperature sensors, controls, fans, dampers, and related equipment need appropriate maintenance to maintain performance.
Regulatory Changes
California’s air-quality regulations continue evolving, making it important for facilities to verify current requirements rather than relying on an old test protocol.
Thermal Oxidizer Testing: What May Be Tested?
A facility’s testing program may include:
Parameter
Why It May Be Tested
VOC
Determine emissions and/or destruction efficiency
NOx
Evaluate combustion-related emissions
CO
Identify incomplete combustion
CO₂
Support combustion and emissions calculations
O₂
Support emissions calculations and combustion evaluation
Flow Rate
Determine mass emissions
Temperature
Verify operating conditions
PM
Evaluate particulate emissions where applicable
Toxic Air Contaminants
Evaluate pollutants specific to the process
Inlet/Outlet VOC
Calculate control efficiency
The exact parameters should always be determined from the facility permit, applicable Air District rules, approved test protocol, and regulatory requirements.
How Energy Environmental Solutions, Inc. Helps Industries
Energy Environmental Solutions, Inc. (EES) provides comprehensive testing and engineering support for facilities using thermal oxidizers and other air pollution control devices.
Thermal Oxidizer Performance Testing
EES can help facilities evaluate thermal oxidizer performance through appropriate source-testing programs.
VOC Destruction Efficiency Testing
We can support testing programs designed to determine VOC inlet and outlet concentrations and control efficiency, where required.
NOx & CO Testing
Because combustion can create secondary pollutants, EES can support testing for NOx and CO where required by permits or regulations.
Source & Stack Testing
Our team provides source and stack testing using applicable EPA, CARB, and local Air District methods.
Compliance Test Protocol Development
Before testing begins, a well-developed protocol can define:
Sampling locations
Test methods
Operating conditions
Number of runs
QA/QC requirements
Analytical procedures
Calculations
Reporting requirements
CEMS, RATA & CGA
EES also supports:
CEMS Certification
RATA
CGA
QA/QC programs
Monitoring support
Engineering Studies
Engineering evaluations can help facilities understand equipment performance and identify potential emissions-control improvements.
Regulatory Reporting
After testing, EES can provide technical reports containing emissions calculations, field information, QA/QC documentation, and test results suitable for regulatory review.
Industries That May Use Thermal Oxidizers
Thermal oxidizers are used across many industrial applications, including:
Chemical Manufacturing
Aerospace Manufacturing
Petroleum & Refining
Pharmaceutical Manufacturing
Printing Operations
Coating Operations
Food Processing
Industrial Manufacturing
Waste Treatment
Landfill Gas Control
Solvent-Using Operations
Fuel Processing
Composite Manufacturing
The applicable testing requirements vary significantly by industry and facility.
Why Choose EES for Thermal Oxidizer Testing?
When a thermal oxidizer is part of your compliance strategy, the question isn’t simply “Can it burn VOCs?”
The real questions are:
Is it achieving the required control efficiency?
Are operating conditions documented?
Are secondary emissions being evaluated?
Is the testing performed according to the applicable protocol?
Is the final report defensible during an inspection?
EES helps facilities address these questions through:
✔ Experienced environmental professionals
✔ California regulatory expertise
✔ Source & stack testing
✔ VOC testing
✔ Thermal oxidizer performance testing
✔ NOx & CO testing
✔ Compliance test protocols
✔ CEMS/RATA/CGA support
✔ Engineering studies
✔ QA/QC documentation
✔ Inspection-ready reporting
✔ Responsive technical support
Don’t Wait Until Your Thermal Oxidizer Fails a Test
A thermal oxidizer is a control device, not a guarantee of compliance.
Its performance depends on equipment condition, operating parameters, waste-stream characteristics, combustion conditions, monitoring, and maintenance.
With California continuing to develop and amend air-quality requirements in 2026, proactive testing and compliance planning can help industrial facilities identify potential issues before they become larger regulatory problems. South Coast AQMD’s current rulemaking activity and facility-specific permit requirements demonstrate why companies should review their testing obligations regularly.
Need Thermal Oxidizer Testing in California?
Energy Environmental Solutions, Inc. can help with:
Air Emissions Testing in California (2026): Latest Updates, Pros, Cons & How EES Helps Industries Stay Compliant
California continues to operate one of the most comprehensive air-quality regulatory systems in the United States. In 2026, air emissions testing, source testing, stack testing, emissions monitoring, QA/QC, and compliance reporting remain important tools for industrial facilities demonstrating compliance with air permits and applicable state, federal, and local requirements.
The regulatory environment is also evolving. South Coast AQMD’s 2026 rulemaking calendar includes more than two dozen planned rule amendments and adoptions addressing particulate matter, toxic air contaminants, monitoring, New Source Review, and other air-quality objectives. At the same time, CARB continues updating statewide programs and test methods, while EPA’s current implementation framework continues to rely on emissions inventories, monitoring, modeling, and control strategies to demonstrate progress toward federal air-quality standards.
For industrial operators, this means one thing: accurate emissions data and defensible testing are becoming increasingly important.
Energy Environmental Solutions, Inc. (EES) helps facilities manage this process through professional Air Emissions Testing, Source & Stack Testing, Compliance Test Protocol Development, CEMS Certification, RATA, CGA, QA/QC, Engineering Studies, and Regulatory Reporting.
Emissions Testing
What Is Air Emissions Testing?
Air emissions testing is the measurement and evaluation of pollutants released from industrial processes, combustion equipment, stacks, vents, and other emission sources.
Depending on the facility and permit requirements, testing may address pollutants such as:
NOx – Nitrogen Oxides
SOx – Sulfur Oxides
CO – Carbon Monoxide
VOC – Volatile Organic Compounds
PM – Particulate Matter
PM10
PM2.5
Hazardous Air Pollutants (HAPs)
Air toxics
Metals
Hexavalent chromium
Dioxins and furans
Ammonia
Greenhouse gases
California’s stationary-source testing framework can involve CARB, EPA, and local Air District test methods, with requirements varying according to the applicable agency and regulation. CARB specifically notes that compliance testing requirements can include published CARB, EPA, or other approved test methods.
Why Is Air Emissions Testing Important in California?
California’s air-quality programs are built around controlling emissions from both mobile and stationary sources. CARB identifies stationary point sources such as power plants, oil refineries, manufacturing facilities, and food-processing plants as important categories of permitted emission sources.
For facilities subject to permits, testing provides regulators and operators with information about the actual performance of emission sources. It can also support permit demonstrations, compliance determinations, emissions inventories, engineering evaluations, and corrective actions.
South Coast AQMD’s Annual Emissions Reporting program illustrates the importance of accurate emissions information: facilities meeting specified reporting thresholds must submit annual emissions reports, and the information is used to support air-quality planning and evaluation of clean-air strategies.
Latest California Air Emissions Updates for 2026
1. California’s Regulatory Activity Remains High
South Coast AQMD announced a 2026 rule calendar containing more than two dozen planned rule amendments and adoptions. The planned activities include particulate-matter reductions, toxic-air-contaminant controls, New Source Review changes, and additional monitoring requirements.
This is important for industrial facilities because testing programs designed around yesterday’s requirements may not automatically address tomorrow’s requirements.
2. Particulate Matter Continues to Receive Attention
South Coast AQMD’s 2026 public-hearing schedule includes proposed amendments involving PM10 and particulate matter, including proposed amendments to Rule 1157 and other particulate-related rules.
The agency also scheduled consideration of proposed Rule 444.1 and amendments involving Visible Emissions, Particulate Matter – Concentration, and Solid Particulate Matter – Weight.
For facilities with particulate-emitting processes, these developments reinforce the value of maintaining reliable PM testing and documentation.
3. Monitoring Requirements Are Expanding
South Coast AQMD’s 2026 rule forecast includes proposals concerning fenceline monitoring for metal toxic air contaminants and monitoring/sampling for facilities identified as having significant high-risk levels for gaseous toxic air contaminants.
This reflects a broader regulatory direction toward more detailed emissions information and greater visibility into facility impacts.
4. Air-Quality Conditions Continue to Drive Regulatory Attention
South Coast AQMD’s 2026 news releases have included ozone advisories, particle-pollution advisories, wildfire-smoke advisories, and windblown-dust advisories. In July 2026, for example, the agency issued an ozone advisory associated with a heat wave.
These events don’t mean every industrial facility must automatically perform a particular emissions test. However, they demonstrate why California continues to prioritize air-quality management and emissions-control programs.
EPA’s current guidance explains that implementation of ozone and particulate-matter standards relies on programs including air-quality monitoring, modeling, emissions inventories, and emission-control strategies.
For industrial facilities, reliable source-level emissions information can therefore become an important component of the broader regulatory picture.
Pros of Professional Air Emissions Testing
1. Stronger Regulatory Compliance
Testing provides measurable evidence that an emission source is operating within applicable permit and regulatory requirements.
Rather than relying solely on assumptions or operating conditions, facilities can use documented test results to demonstrate actual performance.
2. Better Emissions Data
Properly designed testing provides traceable and technically defensible emissions data.
This can be particularly important when data is used for:
Permit compliance
Emissions inventories
Regulatory reporting
Engineering evaluations
Corrective actions
Permit renewals
3. Early Identification of Problems
Testing can reveal problems with combustion equipment, pollution-control devices, process conditions, sampling systems, or operating parameters.
Finding a problem early is generally easier than discovering it during an inspection or after a compliance issue develops.
South Coast AQMD states that its inspectors regularly inspect businesses and may issue compliance notices when additional information is required or when minor violations are identified.
4. Improved Process Performance
Emissions testing isn’t only about compliance.
Test results can also help engineers understand how equipment is performing and identify opportunities to improve combustion, pollution-control efficiency, or operating conditions.
That can potentially translate into lower emissions, better efficiency, and improved operational control.
5. Better Inspection Readiness
A facility with organized test protocols, calibration records, field data, QA/QC documentation, laboratory information, calculations, and final reports is generally better prepared when regulators request information.
Cons and Challenges of Air Emissions Testing
Professional testing has significant benefits, but industrial operators should also understand the challenges.
Testing Can Be Expensive
Specialized equipment, qualified personnel, laboratory analysis, engineering support, and reporting can increase project costs.
Production Scheduling Can Be Difficult
Some tests must occur during representative operating conditions, which means production schedules may need to be coordinated around the testing event.
Testing Can Require Specialized Expertise
Different pollutants require different sampling and analytical approaches. Selecting the wrong method or test condition can compromise the usefulness of the results.
Regulations Can Change
California’s regulatory environment is continuously evolving. South Coast AQMD’s 2026 rule calendar itself demonstrates the volume of regulatory activity underway.
Documentation Requirements Can Be Extensive
Testing is not simply about collecting a sample. Facilities may need protocols, calibration information, operating-condition records, QA/QC documentation, calculations, and regulatory reports.
The solution isn’t to avoid testing. The solution is better planning.
What Does a Typical Air Emissions Testing Program Include?
A professional program may include:
Permit and regulatory review
Test-method selection
Compliance test protocol development
Pre-test coordination
Equipment calibration
On-site source or stack testing
QA/QC verification
Laboratory analysis when applicable
Emissions calculations
Technical report preparation
Regulatory submission support
Corrective-action or engineering recommendations when necessary
CARB maintains published stationary-source test methods for criteria pollutants and toxic air contaminants, while local agencies can establish additional requirements.
How Energy Environmental Solutions, Inc. Helps Industries
Energy Environmental Solutions, Inc. (EES) provides end-to-end environmental compliance support for industrial facilities throughout California.
Our Air Emissions Testing Services Include
Source & Stack Testing Testing of industrial emission sources using applicable EPA, CARB, and local Air District methodologies.
NOx Testing Measurement of nitrogen oxide emissions from combustion and industrial processes.
Particulate Matter Testing Testing for Total PM, PM10, PM2.5, filterable particulate matter, and condensable particulate matter where applicable.
VOC Testing Testing and evaluation of volatile organic compound emissions.
Air Toxics Testing Testing for applicable hazardous air pollutants, metals, hexavalent chromium, dioxins/furans, and other regulated contaminants.
CEMS Services
CEMS Certification
RATA
CGA
QA/QC
Monitoring support
Compliance Test Protocol Development Detailed protocols prepared around applicable permits, regulations, test methods, sampling requirements, and operating conditions.
Engineering Studies Technical assessments designed to support emissions compliance, equipment performance, and regulatory decision-making.
Compliance Reporting Clear, organized, inspection-ready reports with supporting technical documentation.
Why Choose EES?
When emissions compliance is on the line, facilities need more than a test result. They need confidence in the entire testing process.
EES helps clients with:
✔ Experienced environmental professionals
✔ EPA & California regulatory expertise
✔ Source and stack testing
✔ Accurate emissions measurements
✔ Customized test protocols
✔ Comprehensive QA/QC
✔ CEMS, RATA & CGA support
✔ Engineering assistance
✔ Compliance reporting
✔ Responsive technical support
✔ Inspection-ready documentation
✔ End-to-end project management
Industries EES Serves
EES supports emissions compliance programs for industries including:
Petroleum Refineries
Power Generation
Chemical Manufacturing
Cement Manufacturing
Manufacturing Facilities
Food Processing
Pharmaceutical Manufacturing
Waste-to-Energy
Industrial Boilers
Metal Processing
Aerospace
Municipal Utilities
Fuel and Petroleum Operations
Partner With EES for California Air Emissions Testing
California’s 2026 regulatory environment demonstrates a continuing emphasis on emissions reductions, monitoring, source testing, particulate matter, toxic air contaminants, and defensible environmental data. South Coast AQMD’s current rulemaking activity includes particulate-matter controls, toxic-air monitoring, and other measures designed to support state and federal air-quality objectives.
For industrial facilities, proactive emissions testing can turn compliance from a reactive exercise into a planned process.
Whether you need Air Emissions Testing, Source Testing, Stack Testing, NOx Testing, PM10/PM2.5 Testing, VOC Testing, Air Toxics Testing, CEMS Certification, RATA, CGA, Compliance Test Protocol Development, Engineering Studies, or Compliance Reporting, Energy Environmental Solutions, Inc. can help you plan, test, document, and respond with confidence.
Don’t wait for an inspection to discover a testing or documentation problem.
NOx Testing in California (2026): Latest Updates, Benefits, Challenges & How Energy Environmental Solutions, Inc. Helps Industries Stay Compliant
California remains at the forefront of air quality regulation, and Nitrogen Oxides (NOx) Testing continues to play a critical role in protecting public health and meeting stringent emissions standards. In 2026, the California Air Resources Board (CARB) and local Air Quality Management Districts continue to strengthen regulations aimed at reducing NOx emissions from industrial boilers, combustion equipment, turbines, engines, refineries, power plants, and manufacturing facilities. CARB has also updated its climate programs and continues developing new Tier 5 engine standards focused on further reducing NOx emissions from off-road equipment.
For facilities operating under air permits, accurate NOx emissions testing is essential for demonstrating compliance, optimizing combustion efficiency, and avoiding costly compliance issues.
At Energy Environmental Solutions, Inc. (EES), we provide comprehensive NOx Testing, Source Testing, Stack Testing, Compliance Test Protocol Development, Engineering Support, and Regulatory Reporting to help industries confidently meet EPA, CARB, and California Air District requirements.
What Is NOx Testing?
NOx (Nitrogen Oxides) Testing measures emissions of nitric oxide (NO) and nitrogen dioxide (NO₂) released during fuel combustion.
NOx testing is commonly required for:
Industrial Boilers
Process Heaters
Furnaces
Gas Turbines
Internal Combustion Engines
Refineries
Cement Plants
Chemical Manufacturing
Power Generation Facilities
Waste-to-Energy Plants
Testing is performed using EPA-approved reference methods and California Air District requirements to verify emissions remain within permitted limits.
Latest California News & Updates (2026)
1. CARB Continues Advancing Low-NOx Regulations
CARB is continuing development of Tier 5 off-road engine standards, including updated test procedures and compliance requirements designed to further reduce NOx and particulate matter emissions from new diesel engines.
2. South Coast AQMD 2026 Compliance Deadlines
South Coast AQMD has announced several 2026 compliance deadlines, including lower NOx standards and new source-testing requirements for certain oil and gas production equipment, as well as compliance requirements for nitric acid tanks under Rule 1159.1.
3. Stronger Focus on Accurate Emissions Data
Regulators continue emphasizing:
Accurate NOx measurements
QA/QC documentation
Calibration records
Inspection-ready reports
Defensible emissions data
Complete compliance documentation
Facilities with well-planned emissions testing programs are generally better positioned for efficient regulatory reviews.
4. Climate Programs Continue Expanding
CARB adopted updates to California’s Cap-and-Invest Program in 2026 to support long-term emissions reductions while maintaining regulatory certainty for industry, reinforcing the importance of reliable emissions monitoring and compliance planning.
Why NOx Testing Is Important
Professional NOx testing helps facilities:
Demonstrate permit compliance.
Verify combustion performance.
Reduce NOx emissions.
Improve fuel efficiency.
Support EPA, CARB, and Air District inspections.
Maintain inspection-ready documentation.
Support permit renewals.
Reduce environmental impact.
Benefits of Professional NOx Testing
Regulatory Compliance
Testing confirms compliance with EPA, CARB, and local Air District emission limits.
Improved Combustion Efficiency
Testing helps optimize burner performance and reduce fuel consumption.
Lower Operating Costs
Efficient combustion often results in lower fuel use and improved equipment performance.
Reduced Environmental Impact
Lower NOx emissions contribute to improved air quality and reduced smog formation.
Better Inspection Readiness
Complete documentation simplifies agency inspections and regulatory reporting.
Challenges Facilities May Face
Facilities conducting NOx testing may encounter:
Frequently changing regulations.
Complex testing methodologies.
Combustion optimization challenges.
Detailed QA/QC documentation requirements.
Production scheduling around testing activities.
Working with experienced environmental professionals helps reduce these challenges and improve project efficiency.
How Energy Environmental Solutions, Inc. Helps Industries
Energy Environmental Solutions, Inc. (EES) provides complete NOx compliance support throughout California.
Our Services Include
NOx Emissions Testing
Accurate measurement of NO and NO₂ emissions using EPA-approved methodologies.
Source & Stack Testing
Professional emissions testing supporting permit demonstrations and compliance reporting.
Air Quality Compliance Testing
Reliable emissions testing tailored to facility-specific permit requirements.
Boiler Certification & Combustion Testing
Performance evaluations to improve efficiency while reducing emissions.
Compliance Test Protocol Development
Preparation of agency-ready testing protocols customized for your facility.
CEMS Services
CEMS Certification
Relative Accuracy Test Audits (RATA)
Cylinder Gas Audits (CGA)
QA/QC Programs
Engineering Studies
Technical evaluations supporting emissions reduction and process optimization.
Compliance Reporting
Inspection-ready reports with complete QA/QC documentation and technical summaries.
Why Industries Choose EES
Energy Environmental Solutions, Inc. is trusted across California because we provide:
✔ Experienced Environmental Engineers
✔ EPA & California Regulatory Expertise
✔ Accurate & Defensible Emissions Data
✔ Advanced Testing Equipment
✔ Comprehensive QA/QC Procedures
✔ Fast Scheduling & Responsive Technical Support
✔ Inspection-Ready Documentation
✔ Reliable Compliance Reporting
✔ Engineering & Regulatory Support
✔ End-to-End Environmental Compliance Solutions
Industries We Serve
EES supports:
Petroleum Refineries
Power Generation Facilities
Chemical Manufacturers
Cement Plants
Food Processing Facilities
Pharmaceutical Manufacturers
Aerospace & Metal Processing
Waste-to-Energy Facilities
Industrial Boilers
Manufacturing Plants
Municipal Utilities
Glass Manufacturing
Partner with EES for Reliable NOx Testing
As California continues strengthening air quality regulations, NOx Testing has become more important than ever for facilities operating combustion equipment.
Whether your facility requires NOx Testing, Source Testing, Stack Testing, Boiler Testing, CEMS Certification, RATA, CGA, Compliance Test Protocol Development, Engineering Studies, or Regulatory Reporting, Energy Environmental Solutions, Inc. has the expertise to help.
Our experienced team delivers technically sound testing, reliable emissions data, and inspection-ready reporting that help facilities reduce compliance risk, improve operational efficiency, and confidently meet EPA, CARB, and California Air District requirements.
