This repository contains the LaTeX source files and figures associated with the manuscript published in Water Resources Research by Malama, Kuhlman, and James (2013). Malama, B., K.L. Kuhlman & S.C. James, 2013. Core-Scale Solute-Transport Model Selection Using Monte Carlo Analysis, Water Resources Research. http://dx.doi.org/10.1002/wrcr.20273 The manuscript is also available for download on arXiv: http://arxiv.org/abs/1304.6738 The input data, normal PEST estimation results, and null-space Monte Carlo results are contained in the "pest" subdirectory. The implementation of the Multirate model used in this manuscript is given in the "code" subdirectory (with change from Haggerty & Gorelick corresponding to the use of the infinite domain and the truncated lognormal distribution).