Calculate the exposure concentration in mg/m3 for the aerosols.
The sampling results for the chemical hazards you tested for Acme Automotive Parts (AAP) are listed in the following table. The volumes that are listed are what you provided to the laboratory.
Hazard Analytical Result Volume (Time)
Manganese Fume 5 µg 30 L (15-minute)
Copper Fume 140 µg 960 L (8-hour)
Lead Fume 40 µg 960 L (8-hour)
1,2,4 trimethylbenzene 5 µg 48 L (8-hour)
Toluene 125 µg 48 L (8-hour)
Xylene 20 µg 48 L (8-hour)
Metal Working Fluids 500 µg 720 L (8-hour)
Part I: For each of the chemical hazards complete the following:
Calculate the exposure concentration in mg/m3 for the aerosols.
Calculate the exposure in parts per million (ppm) for the vapors.
Discuss where you think errors might have been introduced into the results.
Part II: The results for the noise sampling in the following table were recorded from your noise dosimeters. All the samples were collected for the full shift using 90 decibels on the A scale (dBA) as the criterion level and a 5 decibels (dB) exchange rate.
Location Shift Length Result
Shipping/Receiving 8 hours 78.3 dBA (Lavg)
Hydraulic Press 12 hours 93.0 dBA (Lavg)
Metal Working Line 12 hours 84 dBA (Lavg)
Robotic Welding 12 hours 80.5 dBA (Lavg)
Hand Welding 12 hours 81.3 dBA (Lavg)
Paint Booth 12 hours 79.5 dBA (Lavg)
QA/QC Laboratory 8 hours 70.0 dBA (Lavg)
Final Inspection 8 hours 73.5 dBA (Lavg)
Answer the following for each of the locations listed above:
Convert the results from dBA to percent.
Make sure you show all your work for calculations.
Your assignment must be a minimum of two pages in length, not including title or reference pages. Your assignment must use at least two references. One must be gathered from the CSU Online Library; the other may be your textbook. All references and in-text citations must be formatted according to APA standards.
Answer preview to calculate the exposure concentration in mg/m3 for the aerosols.
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