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Figure 8


FIG. 8. Probability that the lysimeter study generates a maximum annual leaching concentration below 0.1 µg L–1 as a function of the 80th percentile leaching concentration in the field calculated for application every 3 yr. Points are averages of at least three Monte Carlo simulations (of 500 runs each), and bars indicate the standard deviations. The 80th percentile leaching concentration is the 80th percentile of a series of 20 3-yr average flux concentrations. Each line was calculated using an average organic-matter/water distribution coefficient, KOM, of 35 L kg–1 and average DegT50 values ranging from 20 to 100 d. Upper line is for stochastic DegT50, KOM, Freundlich exponent, and dispersion length. Other lines are simulations in which all parameters were kept fixed except the parameter indicated in the legend.