5 Colo. Code Regs. § 1001-10-B-A
This section is non-mandatory. It was designed to provide guidance to contractors in conducting asbestos abatement in a safe fashion.
A. Small Scale Projects
A.1. If friable asbestos-containing materials, in any amount less than or equal to the trigger levels, will be abated, all of Section A.4. should be followed.
A.2. Nothing in this Appendix A shall prevent an owner or operator from employing the work practices contained in Section III. (Abatement, Renovation and Demolition Projects) if it is more prudent or practical to do so.
A.3. For the purposes of this Appendix A, small scale, short-duration renovation and maintenance activities include but are not limited to:
A.3.a. removal of asbestos-containing insulation on pipes;
A.3.b. removal of small quantities of asbestos-containing insulation on beams; or above ceilings;
A.3.c. replacement of an asbestos-containing gasket on a valve;
A.3.d. installation or removal of a small section of drywall;
A.3.e. installation of electrical conduits through or proximate to asbestos-containing materials.
A.4. The following controls and work practices may be used to reduce asbestos exposures during small maintenance and renovation operations:
A.4.a. All movable objects should be removed from the work area to protect them from asbestos contamination. Objects that cannot be removed should be covered completely with six (6) mil polyethylene plastic sheeting before work begins. If contamination has already occurred, they should be thoroughly cleaned with a HEPA vacuum or wet wiped before they are removed from the work area, or completely encased in plastic.
A.4.b. Wet methods
Whenever feasible, wet methods, such as those described in Section III.O.1.a.(i) (Wetting) should be used during small scale, short-duration maintenance and renovation projects.
A.4.c. Removal methods
A.4.c.(i) Use of glovebags should be in accordance with Section III.V.1. (Glovebags).
A.4.c.(ii) If a facility component is to be removed from a structure in order that abatement is performed at an alternate location, the facility component should be completely wrapped in polyethylene and removed to an area where the stripping can be done safely.
A.4.d. Containment Barriers
A.4.d.(i) Containment Barriers may be constructed in accordance with Section III.N. (Containment Components);
A.4.d.(ii) Mini containment barriers may be constructed in the following manner:
A.4.d.(ii) (A) Affix polyethylene sheeting to the walls with spray adhesive and tape;
A.4.d.(ii) (B) Cover the floor with polyethylene and seal it to the polyethylene covering the walls;
A.4.d.(ii) (C) Seal any penetrations such as pipes or electrical conduits with tape; and
A.4.d.(ii) (D) Construct a small change room (approximately 3 feet square) made of 6 mil polyethylene supported by 2 inch by 4-inch lumber (the polyethylene should be attached to the lumber supports with staples or spray adhesive and tape).
A.4.d(ii) (E) The change room should be contiguous to the work area and is necessary to allow the Worker to vacuum off his protective coveralls and remove them before leaving the work area.
A.4.d.(ii) (F) While inside the work area, the Worker should wear Tyvek® disposable coveralls, in accordance with Section III.K.2.b.
A.4.d.(ii) (G) Either a HEPA vacuum or a negative air HEPA unit should be used to establish negative air within the enclosure, in accordance with Section III.N. (Containment Components).
A.4.e. Clearance Air Monitoring
All requirements of Section III.P. (Clearing Abatement Projects) are optional, except that if air monitoring is performed, and the area has public access, the maximum allowable asbestos level shall not be exceeded.
5 CCR 1001-10-B-A