NYC 9/11 Public Portal Document
Staten Island Landfill Debris Disposal Operation Health and Safety Program
4.7 MONITORING
4.7.1 Air Monitoring
This section describes the collection, analysis and interpretation of personal exposure monitoring air
samples. The USEPA, in conjunction with the USCG has been conducting perimeter air monitoring
on a regular basis. Data from the perimeter monitoring will be posted on a regular basis, and will be
available from the USEPA representative.
The purpose of personnel exposure monitoring is to assess individual exposures to chemicals that
occur during work shifts while workers are performing a defined work activity. Data collected is
compared to established time weighted averages, based on 8-hour work shifts, promulgated by the
Occupational Safety and Health Administration (OSHA), or other industry-recognized organizations.
These standards are health-based, and are typically considered the concentration belowwhich a
worker could be exposed to without experiencing adverse health effects. Since the project requires
12-hour work shifts, it will be necessary to adjust exposure criteria appropriately. This may include
the adjustment of the allowable exposure limit, or adjusting air data to compensate for the longer
work shift.
Methods-
The potential of worker exposure is dependent on several key variables:
Work activities - The establishment of job classifications will be used to assess different groups of
workers having similar potential exposure issues. Assessment of work groups will be periodically
reviewed and may be re-defIned as process methods are modified. Potential parameters may vary
from one work group to another, and therefore, the chemical parameters being sampled for may
vary between different work groups. The following work groups have been identified:
Hand sorters - This includes workers using hand tools to manually sift through
debris on the ground.
53
NYC-WTC_000150390
OCR can misread numbers and units. Confirm readings against the page image before using them.