1. (a) Except as provided in Env-A 1804.01(e) and 40 CFR 61.145(c)(1)(iii), prior to any demolition, including by intentional burning, of a structure or portion of a structure, the owner or operator shall remove all ACM in accordance with the applicable provisions of this chapter, subject to (b) below and part Env-A 1812.

2. (b) If a major asbestos abatement is performed as part of a demolition, then the owner or operator shall not dismantle the containment and worker decontamination system until clearance air sampling demonstrates the presence of no more than 0.10 fibers of length greater than 5 microns per cubic centimeter of air as determined by the following:

   1. (1) Except as provided in (2), below, phase contrast optical microscopy, performed as described in “Asbestos and Other Fibers by PCM: Method 7400, Issue 3”, NIOSH NMAM, 5th Edition, June 14, 2019, available as noted in Appendix B; and
   2. (2) For projects at schools subject to AHERA, TEM performed as stated in 40 CFR 763, subpart E, appendix A: “Mandatory and Non-mandatory” or as defined and accepted by the NIST for TEM accreditation.
3. (c) If a structure is being moved intact from one location to another, the owner or operator shall not be required to remove ACM prior to moving the structure if the ACM in the structure will not be disturbed and meets the requirements in 40 CFR 61.145(c)(1)(i) and (c)(1)(iv).

4. (d) For an ordered demolition, pursuant to Env-A 1804.01(e), the owner or operator shall:

   1. (1) Prevent the release of asbestos fibers by adequately wetting ACM with amended water and maintaining ACM wet during demolition;
   2. (2) Handle all debris in accordance with Env-A 1812.02(a), (b) and (d); and
   3. (3) Submit a waste shipment record in accordance with Env-A 1812.03.

Source. (See Revision Note #1, Revision Note #2, and Revision Note #3 at chapter heading for Env-A 1800) #14104, eff 11-1-24, EXPIRES: 11-1-34