Where does all the water go? According to the Environmental Protection Agency (E

Question

Where does all the water go? According to the Environmental Protection Agency (EPA), in a typical wetland environment, 40% of the water is outflow: 48% is seepage: 6% evaporates: and 6% remains as water volume in the ecosystem (Reference: United States Environmental Protection Agency Case Studies Report 832-R-93-005). Chloride compounds as residuals from residential areas are a problem for wetlands. Suppose that in a particular wetland environment the following concentrations (mg/l) of chloride compounds were found: outflow, 53.6: seepage, 75.2: remaining due to evaporation, 50.2: In the water volume, 62.1. (a) Compute the weighted average of chlorine compound concentration (mg/l) for this ecological system. mg/l (b) Suppose the EPA has established an average chlorine compound concentration target of no more than 58 mg/l. Does this wetlands system meet the target standard for chlorine compound concentration? Yes. The average chlorine compound concentration (mg/l) is too high Yes. The average chlorine compound concentration (mg/l) is lower than the target. No. The average chlorine compound concentration (mg/l) is lower than the target. No. The average chlorine compound concentration (mg/l) is too high.

Explanation / Answer

A)The weighted average =(0.40*53.6+0.48*75.2+0.06*50.2+0.06*62.1)/(0.40+0.48+0.06+0.06) =64.274/1=64.274 mg/l

B)yes the average chlorine compound concentration is too high.

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