Suppose, during an 8-hour workday, a worker was exposed to a TWA of 130ppm of Cy

Question

Suppose, during an 8-hour workday, a worker was exposed to a TWA of 130ppm of Cyclohexene (PEL is 300ppm), a TWA of 22ppm of Cument (PEL is 50ppm) and a TWA of 1.75ppm of Formic acid (PEL is 5ppm). Assuming no other contaminants are present what is the TWA? Does the exposure exceed the PEL? (5 points) Question 3 options: Percentage of TWA reached is 122.33% and the PEL has been exceeded Percentage of TWA reached is 73.42% and the PEL has not been exceeded Percentage of TWA reached is 91.26% and the PEL has not been exceeded Percentage of TWA reached is 135.25% and the PEL has been exceeded

Explanation / Answer

Assuming the percentage is as the below:

So, its option A

TWA PEL % (TWA/PEL) Cyclohexene 130 300 43.33% Cument 22 50 44.00% Formic 1.75 5 35.00% Total 122.33%

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