FIG. 11. Breakthrough curves calculated using the Dual-Porosity Model with One Kinetic Site for a 10-cm-long soil column and the following parameters: solute pulse duration = 10 d, q = 3 cm d^–1, = 0.5, _mo = 0.3, _im = 0.2, _mo = 1 cm, K_d = 1 cm³ g^–1, _b = 1.5 g cm^–3, f_mo = 0.6, = 0.1 d^–1; on the left, f_em = 0.4 and _ch = 0.1, 0.5, and 10 d^–1 ; and on the right, _ch = 0.1 d^–1 and f_em = 1.0, 0.7, 0.4, and 0.1.