new dissolution model confirm the hypothesis that residual chloride
from highway deicing applications dissolves into precipitation through-out the year. The measured input includes 52 storm hyetographs and
logs of salt and premix applications on an access road with a closed
drainage systemsubject to runoff, interflow, and baseflow. The output
data feature discharge and conductivity in an outlet weir measured
continuously from February 1998 to May 2000. Individual storm hy-drographs and pollutographs yield calibrated first flush dissolved chlo-ride concentrations and residual solid chloride loads that persist at appreciable levels over the entire period of record. The storm calibra-tionsimply a source strength w of
s that accurately models chloride dissolution kinetics through three salt seasons on the access road. This w rests on physically plausible values for the depression storage depth
(3 mm) and porosity n (0.40) that storethe residual chloride.
jeq.scijournals.org
