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Aeros has been approved for the following source test methods:

SCAQMD Methods 1, 2, 3, and 4

SCAQMD Method 100.1

SCAQMD Methods 5.1, 5.2, 5.3, and 6.1 (Sampling and Analysis)

SCAQMD Method 25.1 (Sampling)

SCAQMD Method 25.3 (Sampling)

SCAQMD Method 307-91 

The Independent Contractor program was designed to approve private independent testing contractors for sources who may choose to have the contractors conduct compliance testing instead of the Air Resources Board (ARB) for ARB required testing.  

Aeros Environmental, Inc. is devoted to providing the highest caliber of source testing solutions and exceptional expertise for the benefit of our clients.  As part of our Quality Management System, we are dedicated to a rigorous training program and participate in certification by regulatory authorities and 3rd party auditors.

• ARB Method 1

• ARB Method 2

• ARB Method 3

• ARB Method 4

Laboratory Approval Program

Through the Laboratory Approval Program (LAP) the South Coast AQMD approves independent laboratories or source testing firms that collect and analyze emission samples for reporting to the SCAQMD.  Test facilities are approved on a method-by-method basis. Approval means that the test facility's management, personnel, policies, facilities, methods, equipment, documentation, quality assurance and audit performance have been evaluated and found to meet SCAQMD criteria.

The Qualified Source Testing Individual (QSTI) program is conducted by the Source Evaluation Society (SES) as a service to the source testing industry.  QSTI exams are designed to assess the candidate’s knowledge of the technical requirements and specifications of EPA and other related test methods.  In addition, the exams also gauge the candidate’s understanding of the implementation of those methods.  Stationary source air emissions testing implementation issues include:


     • General industrial process characteristics and operations;

     • Regulatory requirements related to air emissions compliance

        testing, particularly EPA regulations;

     • Fundamental gas relationships (e.g., temperature, dilution,

        and moisture corrections); and

     • On-site safety and equipment handling practices.


The SES believes that a characteristic of the approved QSTI is the ability to demonstrate this broader knowledge in any emissions testing situation.  This knowledge is relevant to the success of an emissions testing project including

evaluating the suitability of a

test site for safety and

accessibility purposes,

completing and verifying

emissions calculations,

preparing effective compliance

test reports and assessing

emissions measurement data for

process optimization purposes.


All Technical Operations Directors and Field Testing Division Project Managers are QSTI certified. Field Testing Division Team Leaders are also QSTI certified.

On March 28, 2011 the U.S. EPA issued final approval of amendments to 40 CFR 75. These amendments require that all Part 75 relative accuracy test audits (RATAs) and stack tests related to Appendix E conducted on or after March 27, 2012 be conducted by an Air Emission Testing Body (AETB) that conforms to ASTM D7036.  This standard provides a framework for a quality system that when established and followed, promotes the acquisition of consistent quality data. The quality system is outlined in a Quality Manual. The Quality Manual and its implementation provide the sole basis for determining the conformance of the AETB with the ASTM standard.


Aeros Environmental is certified for relevant

Part 75 RATA methods in accordance with the requirements of ASTM D7036. Proof of conformance to the ASTM standard is in the form of a Letter of Certification signed by the the Company's senior management.

Aeros has been approved for the following source test methods:

Qualified Source Testing

Individual (QSTI) Program

Air Emission Testing Body (AETB) Certification for 40 CFR 75 RATAs

• U.S. EPA Method 18

• U.S. EPA Method 202

• U.S. EPA Method 205

• Visible Emissions Evaluation (VEE)

• ARB Method 100

 (CO, CO2 NOX, O2, SO2, THC)


• ARB Method 501

• ARB Method 5

• ARB Method 6

• ARB Method 8

• ARB Method 20