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Developing the Sampling Strategy

Developing the Sampling Strategy. Lecture Notes. Purpose and goal of the sampling strategy. Accurately and as completely as possible document worker exposure profiles, control equipment performance, environmental release, etc. Outcomes of developing a good sampling strategy. You will

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Developing the Sampling Strategy

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  1. Developing the Sampling Strategy Lecture Notes IH&S 725 Dr. Myers, C.I.H.

  2. Purpose and goal of the sampling strategy • Accurately and as completely as possible document worker exposure profiles, control equipment performance, environmental release, etc IH&S 725 Dr. Myers C.I.H.

  3. Outcomes of developing a good sampling strategy • You will • Collect exposure data suitable for your needs • Reduce chances of unnecessary, wasteful sampling • Produce sampling data that is representative and accurately analyzed • Develop recommendations based upon sound data analysis IH&S 725 Dr. Myers C.I.H.

  4. Key steps to develop and conduct the sampling strategy • Recognition of potential exposures by agent and worker group to form SEG. • Develop basis to prioritize evaluation • Selection of instruments and analytical methods to do the evaluation • Quality assurance of sampling and analytical instruments IH&S 725 Dr. Myers C.I.H.

  5. Key steps to develop and conduct the sampling strategy • Determine sample parameters consistent with the purpose and scope of the survey • Data reduction and interpretation suitable for and consistent with the stated purpose of the survey IH&S 725 Dr. Myers C.I.H.

  6. Developing the basis to prioritize evaluation IH&S 725 Dr. Myers, C.I.H.

  7. Use of risk assessment principles • Risk assessment is a multidimensional problem • exposure levels, health consequences of over exposure, whether the risk is voluntarily accepted, whether the perception is that alternate risks are higher, the immediacy of consequences if the risk is accepted, and who is at risk IH&S 725 Dr. Myers C.I.H.

  8. Use of risk assessment principles • Two parameter generally suffice to manage an occupational air sampling strategy • Exposure ranking and • Health effect ranking • Sometimes the number of workers potentially exposed is also an important parameter IH&S 725 Dr. Myers C.I.H.

  9. Exposure ranking • Exposure ranking is a monotonic semi- subjective scale • available air sampling data, and or • on process models that predict both airborne concentrations and their frequency of occurrence • Scale can be defined for each agent IH&S 725 Dr. Myers C.I.H.

  10. Health effects ranking • Based on the consequences of exposure to the agent • Constructed on a semi-subjective scale • Scale can be tailored to fit different situations IH&S 725 Dr. Myers C.I.H.

  11. Example 1 of an exposure ranking scheme based on level of control IH&S 725 Dr. Myers C.I.H.

  12. Example 2 of an exposure ranking scheme based on level of the OEL IH&S 725 Dr. Myers C.I.H.

  13. Example 1 of a health effects ranking scheme IH&S 725 Dr. Myers C.I.H.

  14. Example 2 of a health effects ranking scheme IH&S 725 Dr. Myers C.I.H.

  15. Sampling priorities: Example 1 • Based on of the exposure ranking and the health effects ranking scales • can very low/trivial, low, medium, high or very high IH&S 725 Dr. Myers C.I.H.

  16. Sampling priorities: Example 2 IH&S 725 Dr. Myers C.I.H.

  17. Resource allocation: example budget proportions for assessment & control IH&S 725 Dr. Myers C.I.H.

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