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I <br /> r <br /> C FAMILY — SLOPE/DRAINSNEGETATION <br /> Nonlandscaped Chemical Vegetation Control <br /> OPERATIONAL . Minimize the use of pesticides in or near storm water drainage system <br /> PROCEDURES or watercourses. <br /> (CONT'D) . Calibrate the spray rig to ensure accurate application of pesticides. <br /> • Do not spray chemicals when rainfall-causing runoff is forecast within <br /> 12 hours. <br /> Water used for chemical mixing or in application must be controlled to <br /> prevent rmpermitted non-storm water discharges. <br /> • Preserve existing vegetation by defining the work area and,replacing the <br /> damaged vegetation outside the defined work area. <br />