1. Examples decision trees to make up IH sampling plans
Ingrid Vande Velde
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2. Content
Baseline monitoring decision tree
Periodic monitoring decision tree
IH exposure data

3. Baseline monitoring decision tree (1/3)
Outcome qualitative risk assessments is input for decision tree to make up sampling plan
Overview process flow: see next 2 slides (+ also Word document above)

4. Baseline monitoring decision tree (2/3)
Continued on next slide

5. Baseline monitoring decision tree (3/3)

6. Chart of 100 industrial hygiene air sample results
IH exposure data (1/2)
Chart of 100 industrial hygiene air sample results y c n e u q e r F e g n a R n o i t a r t n e 2 5 5 7 5 1 1 2 5 1 5 1 7 5 c n C o n c e n t r a t i o n ( p p m ) o C
IH exposure data are most of the time lognormal distributed

7. Geometric mean (GM) versus arithmetic mean (AM)
IH exposure data (2/2)
Geometric mean (GM) versus arithmetic mean (AM) GM AM y c n e u q e r F e g n a R n o i t a r t n e 2 5 5 7 5 1 1 2 5 1 5 1 7 5 c n C o n c e n t r a t i o n ( p p m ) o C
Geometric mean = median of lognormal distributed data

8. Periodic monitoring decision tree (1/3)
Outcome quantitative risk assessments (= after first IH measurements are done) is input for decision tree to make up sampling plan
Overview process flow: see next 2 slides (+ also Word document above)

9. Periodic monitoring decision tree (2/3)
Continued on next slide

10. Periodic monitoring decision tree (3/3)