Question

Where does all the water go? According to the Environmental Protection Agency (EPA), in a typical wetland environment, 37% of the water is outflow; 49% is seepage; 4% evaporates; and 10% 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, 63.8; seepage, 72.7; remaining due to evaporation, 57.0; in the water volume, 74.0.

Compute the weighted average of chlorine compound concentration (mg/l) for this ecological system. (Round your answer to one decimal place.)

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?

a. Yes. The average chlorine compound concentration (mg/l) is too high.

b. Yes. The average chlorine compound concentration (mg/l) is lower than the target.

c. No. The average chlorine compound concentration (mg/l) is lower than the target.

d. No. The average chlorine compound concentration (mg/l) is too high.

Answer 1