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Chlorpyrifos <br />Continued <br />CONDITION D <br />Determining Setback distances are for a broadcast application. When labels specify the <br />application application rate as fluid ounces per 1000 feet of row or 100 feet of row, the <br />rate- "broadcast equivalent application rate" is the rate of active ingredient (lbs <br />Converting AUac) within the entire application block. The "broadcast equivalent <br />row feet rate to application rate" must be calculated to determine the setback distance. <br />lbs Al/ac <br />Generalized formula converting fl oz Der row feet to pints per acre <br />(fl oz per 1000 row feet) (row width in inches) x 32.67* <br />x`32.67 is a factor combining several unit conversions, including inches <br />to feet, square feet to acres, and fluid ounces to pints. For rates <br />expressed as fl oz / 100 row feet, use 326.7 instead. <br />Example — Lorsban Advanced <br />Label application rate for onions is 0.37 fluid ounces per 1000 feet of <br />row, if the row spacing is 6 inches. <br />Pints/acre = 0.37 x 32.67 6 = 2.01 pints/acre. <br />2.01 pints /acre is converted to lbs Al/ac using the calculation above. <br />Setback A setback distance must be established for every chlorpyrifos application near <br />distances a sensitive site. The setback distance must extend outward from the perimeter <br />of the sensitive site to the perimeter of the application block. <br />Use the following application and rate specific setback distance tables for all <br />chlorpyrifos applications. <br />Aerial application — fixed wing or rotary <br />Application Rate Occupied Sensitive Site <br />(lbs Al /ac) Setback Distance (feet) <br /><_1 250 <br />>1-2.3 500 <br />Ground applications <br />Application Rate <br />(lbs AUac) <br />Occupied Sensitive Site Setback Distance (feet) <br />Sprinkle Chemigation or ground boom <br />Airblast <br /><1 <br />150 <br />150 <br />>1-2 <br />350 <br />350 <br />>2-4 <br />400 <br />400 <br />>4 — 6 <br />prohibited <br />500 <br />Continued on next page <br />Chlorpyrifos <br />