Breathing zone samples representative of 8-hour TWA and 30-minute Excursion Limit of each employee
to produce exposures above the Excursion Limit.
Assessment by a competent person before or at the initiation of an operation -- so all appropriate control systems can be applied
Basis:
-Exposure monitoring if feasible
-Observations, information, or calculations which indicate employee exposure, including any previous monitoring
-“Negative Exposure Assessment” required to conclude that exposures are likely to be consistently below the PELs
-Exposure above the PELs is assumed for Class I work until exposure monitoring documents otherwise, or employer makes a “negative exposure assessment”
Periodic Monitoring
For Category 1 and 2 work in a regulated area: daily monitoring representative of each employee’s exposure unless the employer has a negative exposure assessment for the entire operation. All other operations: periodic monitoring sufficient to document the exposure.
Exception: employees doing Category 1 work who are using a control listed in (g)(4)(i), (ii), or (iii) and employees doing Category 2 work may be equipped with supplied-air respirators operated in the positive-pressure mode in lieu of daily monitoring
Other
If exposures are shown to be below the PELs by a statistically reliable method, monitoring may be discontinued. Additional monitoring is required whenever a change in process, control equipment, personnel, or work practice may produce exposures above the PELs. Employees and their designated representatives may observe monitoring. Employers will notify affected employees of the monitoring results, in writing or by posting.
Asbestos Work Categories
Category 1: Work includes the installation or removal of non-friable asbestos in which the asbestos fiber is locked in a binder such as cement, vinyl or asphalt which holds the material together. E Light Electric Service employees shall not participate in Category 1 work.
Category 2: Work involves work with friable asbestos that is of short duration in situations which create low levels of airborne asbestos. Example of category 2 work are enclosure of friable asbestos, application of tape or sealant to asbestos, asbestos pipe insulation and minor removal of friable asbestos and minor installation, maintenance or repair work above false ceilings where sprayed asbestos fireproofing is present on beams. E Light Electric Service employees shall not participate in Category 2 work.
Category 3: Work involves possible exposure to friable asbestos over long periods of time or work that generates high levels of asbestos. Included in category 3 work are removal projects where relatively large amounts of asbestos are removed from a building including removal of friable asbestos from structural material, cleaning or removal of heating or air handling equipment that has been insulated with asbestos. Also included in category 3 work are cutting or grinding of asbestos-containing materials using power tools.
E Light Electric Service employees shall only conduct work in Category 3 and only as exposed during the course of their electrical operations, repair and installation. No E Light Electric employee shall conduct work that classified as Category 1 or 2.