3.6.19
Encasement of ACM
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NOTE: Delete items not required for the project.
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Prior to applying the first layer of the polymer system, the structural
stability of the ACM shall be verified. Encasement materials shall not be
applied until all removal work within the regulated area has been completed
and materials to be encased have been decontaminated. The asbestos
substrate shall be completely encased. A polymer finish containing
fiberglass shall be applied over the low density cellular foam to a
thickness of 25 mm 1 inch. All system components shall be applied
according to the system manufacturer's instructions and data. Encasement
shall be applied to:
a.
Beams and Decking:
See Detail Sheet 66
b.
Columns:
See Detail Sheet 67
c.
Acoustical Ceiling Insulation:
See Detail Sheet 69
d.
Storage Tank and Boiler Breeching:
See Detail Sheet 90.
3.6.20
Sealing Contaminated Items Designated for Disposal
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NOTE: Use this paragraph only when asbestos
contaminated items are also designated for removal
and disposal.
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Contaminated items designated for removal shall be coated with an asbestos
lockdown encapsulant before being removed from the asbestos control area.
The asbestos lockdown encapsulant shall be tinted a contrasting color and
shall be spray applied by airless method. Thoroughness of sealing
operation shall be visually gauged by the extent of colored coating on
exposed surfaces.
3.7
FINAL CLEANING AND VISUAL INSPECTION
After completion of all asbestos removal work and the gross amounts of
asbestos have been removed fromm every surface, any remaining visible
accumulations of asbestos shall be collected. For all classes of indo0r
asbestos abatement projects a final cleaning shall be performed using HEPA
vacuum and wet cleaning of all exposed surfaces and objects in the
regulated area. Upon completion of the cleaning, the Contractor shall
conduct a visual pre-inspection of the cleaned area in preparation for a
final inspection before final air clearance monitoring. The Contractor and
the CO shall conduct a final visual inspection of the cleaned regulated
area in accordance with ASTM E 1368 and document the results on the Final
Cleaning and Visual Inspection as specified on the SET-UP DETAIL SHEET 19.
If the CO rejects the clean regulated area as not meeting final cleaning
requirements, the Contractor shall reclean as necessary and have a
follow-on inspection conducted with the CO. Recleaning and follow-up
reinspection shall be at the Contractor's expense.
SECTION 13280A
Page 46
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