(Solved): A waste pit contains a mixture of hazardous chemicals, including tetrachloroethene (tetrachloroethy ...

A waste pit contains a mixture of hazardous chemicals, including tetrachloroethene (tetrachloroethylene, or PCE), trichloroethene (trichloroethylene, or TCE), cis-1,2dichloroethene (cis-1,2-DCE), and vinyl chloride (VC). These chemicals are part of the decay chain of PCE. The waste pit is in contact with underlying groundwater. If concentrations in the leachate draining to groundwater are 3 times less than the concentrations in the waste pit, and concentrations in the groundwater at a domestic well located $$1/2$$ mile downgradient are one seventh the concentrations in the leachate, what concentration of these chemicals at the waste pit would be protective of a resident drinking the groundwater from the well if ingestion is the only exposure route? Assume the following: Calculate the cleanup level based on both carcinogenic risk and non-carcinogenic risk. If there is no slope factor, the chemical is not carcinogenic so that you can only calculate a noncarcinogenic risk.