4. An industrial hygienist determined the TWA exposures to the following four solvent vapors for workers working in a spray paint booth. Calculate the \% TLV exposure for these workers. 5. For the scenario above the industrial hygienist had a measare of total oiganic vapor (ppm); the instrument being used to determine the airborne level seuld not distinguish any of the specific solvents listed in question q above. The estimated 8 hour TWA was 60ppm total organics. Assuming the organics measured included those listed in question q do you believe it would be safe for the workers to work in this environment