Can you calculate the equivalent exposure for the following two metals using the formula and the information provided?
Em=(C1÷L1+C2÷L2)+. . .(Cn÷Ln)
Where:
Em is the equivalent exposure for the mixture.
C is the concentration of a particular contaminant.
L is the exposure limit for that substance specified in subpart Z of 29 CFR part 1910.
The value of Em shall not exceed unity (1).
Metal Fume concentration result of sampling OSHA PEL ACGIH TLV
Cadmium 0.025 mg/m³ 0.1 mg/m³ 0.01 mg/m³
Chromium 0.02 mg/m³ 1 mg/m³ 0.5 mg/m³