Given the following analysis of groundwater:

a$.$ Convert all values to $me\frac{q}{L}.$

b$.$ Do an anion$-$cation balance.

c$.$ Plot the position on a trilinear diagram

$($Figure $9\mathrm{.}17).$

d$.$ Make a Stiff pattern of the analysis.

e$.$ Make a Schoeller diagram of the analysis.