Past Projects
- design of a commissioning and surveillance strategy for a modified process
involving a highly potent compound
- use of performance-based strategy design methods to fine tune a mature corporate
exposure assessment strategy
- analysis of a historical exposure database and construction of a job-exposure-matrix
A project consisted of assisting the company EHS staff to design multi-stage
exposure assessment commissioning and surveillance strategies where the process
was highly-controlled, but the substance involved was considered highly toxic.
Exposure data were expected to consistently be near or below the LOD. The company
wanted to minimize the sampling requirements, yet wanted to be highly confident
that the true 99th percentile task-based exposure is maintained below the corporate
exposure limit. A computer simulation of the proposed strategy was devised that
permitted the company to determine the optimum sample sizes and decision thresholds
for each stage of both the commissioning and surveillance strategies.
Another project involved assisting a company EHS staff to fine tune the exposure
Sampling Strategy built into a relatively mature exposure assessment and management
program. The interesting aspect of their strategy was that it explicitly incorporated
"professional judgment" into the process. The company adapted the
AIHA exposure assessment model (Mulhausen and Damiano, 1998) and classified
exposure potential into the four exposure control categories recommended by
the AIHA. The exposure Sampling Strategy called for a different Sampling Plan
for each SEG, depending upon the Initial (exposure) Rating assigned to the SEG
at the beginning of each sampling cycle (as well as the toxicity category of
the substance). EAS Inc devised a computer simulation of this strategy, which
allowed the EHS staff fine to fine tune the Sampling Strategy.
A recent project involved the analysis of 30 years of occupational exposure
data for several plants with the goal of constructing a job-exposure-matrix
(JEM) covering every plant, department, job, and year combination. The data
were reviewed, analyzed, and reduced to a dataset of valid personal TWA exposures
and the JEM was constructed. EAS Inc then worked with a team of industrial hygienists
with experience at the plants to fill the empty JEM cells.
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