WAC 296-843-13010
Evaluate employee exposure to
hazardous substances during clean-up operations.
IMPORTANT:
The clean-up operation begins when soil, surface water,
or containers are moved or disturbed.
You must:
• Identify the type of personnel monitoring and
environmental sampling you plan to use, including
instrumentation.
• Include requirements for maintaining and calibrating
the monitoring and sampling instruments used.
• Monitor whenever employees may be exposed to
concentrations exceeding PELs or other published exposure
levels.
• Evaluate employees who are likely to have the highest
exposure:
– Monitor all employees who are likely to have the
highest exposure to hazardous substances or health hazards
above the PEL or published exposure limit.
– Use personal sampling frequently enough to characterize
the exposures of these employees.
▪ When results indicate exposure is over the PEL or other
published exposure level, identify all employees likely to be
above the PEL or published exposure limit.
Note:
You may use a representative sampling approach by documenting that the employees and chemicals chosen for
monitoring are representative of both:
• Employee exposure to hazardous substances;
AND
• Employees not sampled.
You must:
• Conduct monitoring when the possibility of one of the
following exists:
– An atmosphere that is immediately dangerous to life or
health (IDLH);
OR
– A flammable atmosphere;
OR
– Employee exposures exceeding PELs or other published
exposure levels.
Examples of situations where these possibilities may
exist:
▪ Work begins on a different portion of the site.
▪ Contaminants other than those previously monitored are
being handled.
▪ A different type of site operation starts, such as
moving from drum opening to exploratory well drilling.
▪ Handling leaking drums or containers.
▪ Working in areas with obvious liquid contamination such
as a spill or lagoon.
▪ Time has passed and employee exposure levels may have
significantly increased.