Fig. 6. Modeled variation over time of + ß fraction and total riverine endosulfan concentration, integrating all transport pathways (spray + vapor + dust + runoff), for the (a) Namoi River and (b) Pian Creek, using model parameters in Table 3. Time traces are given for X = 10, 40, and 100 km downstream. A major runoff input occurs on Days 8 and 9 at X = 35 km.