3.8
LOCKDOWN
Prior to removal of plastic barriers and after final visual inspection, a
(lockdown) encapsulant shall be spray applied to ceiling, walls, floors,
and other surfaces in the regulated area.
3.9
EXPOSURE ASSESSMENT AND AIR MONITORING
**************************************************************************
NOTE: Air sampling regimen depends on the abatement
techniques specified and applicable laws. Consult
the state, local and customer requirements and edit
accordingly.
**************************************************************************
3.9.1
General Requirements
a. Exposure assessment, air monitoring and analysis of airborne
concentration of asbestos fibers shall be performed in accordance with
29 CFR 1926.1101, and the Contractor's air monitoring plan. Results of
breathing zone samples shall be posted at the job site and made
available to the CO.
b.
Worker Exposure.
(1) The Contractor's Designated IH shall collect samples
representative of the exposure of each employee who is assigned to
work within a regulated area. Breathing zone samples shall be
taken for at least 25 percent of the workers in each shift, or a
minimum of 2, whichever is greater. Air monitoring results at the
95 percent confidence level shall be calculated as shown in Table
2 at the end of this section.
(2) [[The Contractor shall] [The CO will] provide an onsite
independent testing laboratory with qualified analysts and
appropriate equipment to conduct sample analyses of air samples
using the methods prescribed in 29 CFR 1926.1101, to include NIOSH
94-113 Method 7400.]
(3) The Contractor's workers shall not be exposed to an airborne
fiber concentration in excess of 1.0 f/cc, as averaged over a
sampling period of 30 minutes. Should a personal excursion
concentration of 1.0 f/cc expressed as a 30-minute sample occur
inside a regulated work area, the Contractor shall stop work
immediately, notify the Contracting Officer, and implement
additional engineering controls and work practice controls to
reduce airborne fiber levels below prescribed limits in the work
area. Work shall not restart until authorized by the CO.
c.
Environmental Exposure
(1) All environmental air monitoring shall be performed by [the
Contractor's Designated IH] [and] [Contracting Officer's IH].
(2) Environmental and final clearance air monitoring shall be
performed using NIOSH 94-113 Method 7400 (PCM) with optional
confirmation of results by [OSHA] [or] [EPA] TEM.
(3) For environmental and final clearance, air monitoring shall be
SECTION 13280A
Page 47
Previous Page
