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8. A worker was exposed over his work shift to various levels of n-pentane as shown in the tabulated exposure history that follows. The TLV-TWA

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8. A worker was exposed over his work shift to various levels of n-pentane as shown in the tabulated exposure history that follows. The TLV-TWA for n-pentane is 600ppm. a. What was this worker 8-hour TWA exposure to n-pentane? (10 pts.) b. Was this exposure a violation of the 8-hour TLV-TWA? (5 pts.)

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