When a Certified Asbestos Abatement Contractor is Required How trigger levels drive the need for certified abatement—and what that means for your project Trigger Levels • Abatement • Compliance Path

When the Wizard shows “Inspection & Possible General Abatement Contractor Required,” it means asbestos-containing materials (ACM) are either confirmed by testing or assumed present in amounts above Colorado’s trigger levels. At this point, state and federal rules shift from “inspection only” to requiring abatement by a certified professional.

​1. Colorado’s Trigger Levels (Inspection vs. Abatement)As defined in Colorado Regulation No. 8, Part B (Asbestos):

• Single-Family Residential Dwelling (SFRD):
  More than 32 square feet, 50 linear feet, or the volume of a 55-gallon drum of ACM.
• Public & Commercial (P&C) Buildings:
  More than 160 square feet, 260 linear feet, or the volume of a 55-gallon drum of ACM.

Once asbestos is present above these thresholds, the project typically requires a General Abatement Contractor (GAC) licensed by the Colorado Department of Public Health & Environment (CDPHE).

2. Why a General Abatement Contractor?

• Certified workforce: Abatement contractors are trained and licensed to safely remove, enclose, or encapsulate ACM.
• Engineering controls: Specialized methods (containments, negative air machines, wet removal) prevent asbestos fibers from becoming airborne.
• Waste handling: ACM must be sealed, labeled, transported, and disposed of at an approved landfill.
• Legal compliance: CDPHE requires abatement notifications, project designs, and clearance air testing for regulated projects.

3. OSHA and Worker Protection Still ApplyEven aside from CDPHE, OSHA regulations (29 CFR 1926.1101) require:

• Training and protection for all workers disturbing ACM.
• Respiratory protection, protective clothing, and exposure monitoring.
• Communication of hazards to anyone who may be exposed.

These requirements cannot be met without licensed abatement professionals when large amounts of ACM are involved.

4. Why This Matters for You

• Health: ACM can release microscopic fibers that cause asbestosis, lung cancer, and mesothelioma.
• Project success: Unlicensed removal can lead to stop-work orders, costly delays, and fines.
• Peace of mind: Certified contractors ensure your project passes clearance testing and is documented as compliant.

✅ In Plain English
​If asbestos is present above Colorado’s trigger levels, a certified abatement contractor may be required to handle the materials safely and legally.
This ensures:

• The work meets state and federal safety standards.
• Workers and neighbors are protected.
• Your project isn’t delayed or penalized for non-compliance.

References for Those Who Want to Read More

• Colorado Regulation No. 8, Part B – Asbestos Requirements CDPHE →
  • Section III.A – Inspection & trigger thresholds
  • Section III.C – Abatement requirements
• OSHA 29 CFR 1926.1101 – Construction Asbestos Standard OSHA →