You live in a world where you have Benzene and Trichloroethylene exposures. Give

Question

You live in a world where you have Benzene and Trichloroethylene exposures. Given requirements to limit the risks, what concentrations of these materials are acceptable in the water you drink and air that you breath?

a. Benzene is present in your home drinking water well and it came froma leaking underground storage tank for Gasoline. The lifetime acceptable risk is 1×(10^-5). The units of concentration ar mg/L

b. Trichloroethylene is used at your workplace for degreasing metal parts and your exposure is through the air your breath. The lifetime acceptable risk is given to be 1×(10^-6). The units of concentration are mg/m3

Explanation / Answer

Promote the use of alternative solvents in industrial process,glues,paints,develop and implement policies and legislation to remove benzene from consumer products,reduce exposure at petrol filling stations,

Maximum contamination level for benzene in water is 0.005mg/l,in air it should be less then 0.1 to 1mg/m3,

The Minnesota Pollution control agency develops intrusion screening values to understand what actions may be needed to protect health.

For Trichloroethylene permissible level in water is 0.005mg/l,where as in air it is 135mg/m3.

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