Because state agencies cannot explicitly endorse specific vendors or methodologies, confirming where a state stands on virtual smoke school certification has historically meant piecing together information from multiple sources, an acceptance letter here, a statute reference there. CAA’s VR smoke school state acceptance pages have now been updated to bring that information into a single visit.

CAA’s VirtualOpacity® acceptance pages provide direct links to state information pages (see example: Colorado) that include ALT-152A status, the letter of acceptance, an in-person smoke school schedule, state air quality agencies, and state air visible emissions opacity standards.

Colorado’s own compliance division has formally acknowledged EPA’s determination approving ALT-152 as an alternative to Test Method 9 field certification, citing the method’s approval in the Federal Register.

Why This Matters for Multi-State Facility Operators

This update is especially useful for clients managing observer certifications across multiple states, where confirming ALT-152A acceptance state by state has been part of planning training and recertification schedules. Having the supporting statute references and acceptance letter in one place can help compliance teams document their basis for using VirtualOpacity® certifications in a given jurisdiction. For a look at how multi-state compliance planning works more broadly, see our post on nonattainment areas.

Key Points

  • State information pages now include each state’s relevant air statute references
  • The ALT-152A letter of acceptance is now available directly on the state pages
  • These additions support clients tracking VEO certification requirements across multiple states
  • State agencies cannot explicitly endorse specific vendors, so documentation of acceptance is especially useful for compliance recordkeeping

Explore the Updated State Pages

Compliance Assurance Associates, Inc. (CAA) helps clients stay current on VirtualOpacity® acceptance across jurisdictions. Visit the VR smoke school state listing page to determine if your state accepts ALT-152A. Click on the state to review the air statutes, air agency information, and ALT-152A documentation, or reach out to our team with questions about a state not yet reflected there.

To learn more about how CAA supports visible emissions compliance across states, contact us by email or by phone.

Compliance Assurance Associates, Inc. (CAA) is a nationally recognized provider of smoke school training and opacity certification, helping facilities navigate visible emissions requirements and state-by-state VirtualOpacity® acceptance across the country.