Examples decision trees to make up IH sampling
- Slides: 10
Examples decision trees to make up IH sampling plans Ingrid Vande Velde
Content n Baseline monitoring decision tree n Periodic monitoring decision tree n IH exposure data 2
Baseline monitoring decision tree (1/3) n Outcome qualitative risk assessments is input for decision tree to make up sampling plan n Overview process flow: see next 2 slides (+ also Word document above) 3
Baseline monitoring decision tree (2/3) Continued on next slide 4
Baseline monitoring decision tree (3/3) 5
Concentration Range Frequency IH exposure data (1/2) Chart of 100 industrial hygiene air sample results 0 25 50 75 100 125 Concentration (ppm) 150 175 IH exposure data are most of the time lognormal distributed 6
Concentration Range Frequency IH exposure data (2/2) GM 0 AM 25 Geometric mean (GM) versus arithmetic mean (AM) 50 75 100 125 Concentration (ppm) 150 175 Geometric mean = median of lognormal distributed data 7
Periodic monitoring decision tree (1/3) n Outcome quantitative risk assessments (= after first IH measurements are done) is input for decision tree to make up sampling plan n Overview process flow: see next 2 slides (+ also Word document above) 8
Periodic monitoring decision tree (2/3) Continued on next slide 9
Periodic monitoring decision tree (3/3) 10