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ESTRICTED MATERIALS FERMI cont. Page 5 30EHRING FARMS Permit #: 39-96-=904187 ------------ CONDITION - U ENDOSULFAN GENERAL 1 . Do not apply endosulfan to fields under irrigation . �. Do not irrigate fields treated with endosulfan for 72 hours following application . _ . Do not apply more than 1 . 5 lbs. a. i . /acre/application . Orchard crops and strawberries are exempted . 4. A minimum 300 foot buffer zone shall exist between the treated area and a drain or canal to contain irrigation/rain runoff before it is discharged into surface waters. The buffer zone may be a fallow field , pasture land or an untreated portion of the field . AERIAL APPLICATION 5. Endosulfan shall not be discharged at a height of more than 10 feet above the crop or target. Discharge shall be shutoff whenever it is necessary to raise the equipment over obstacles such as trees or poles . 6. Do not apply endosulfan when the wind velocity exceeds 10 miles per hour (m. p. h. ) . 7. The flow of liquid to aircraft nozzles shall be controlled by a positive shutoff system as follows: ( 1 ) each individual nozzle shall be equipped with a check valve and the flow controlled by a suckback device or a boom pressure release device; or (2) each individual nozzle shall be equipped with a positive action valve. 8. Aircraft nozzles shall not be equipped with any device or mechanism which would cause a sheet, cone, fan , or similar type dispersion of the dis- charged material , , except as otherwise provided . 9. Aircraft boom pressure shall not e::ceed 40 psi . 10. Aircraft nozzles shall be equipped with orifices directed backwards, parallel to the horizontal axis of the aircraft in flight. 11 . Fixed wing aircraft and helicopters operating in excess of 6C_) m . p. h. shall be equipped with jet nozzles having an orifice of not less than 1/6 inch in diameter. 12. Helicopters operating at 60 m. p. h. or less shall be equipped as follows: ( 1 ) nozzles having an orifice not less than 1/16 inch in diameter, a number 46 (or equivalent) or larger whirlplate may be used ; or (2) fan nozzles with a fan angle number not larger than 8(7 degrees and a flow rate not less than one gallon per minute at 40 psi (or equivalent) ; or (7) the Microfoil (R) boom (a coordinanted spray system including airfoil shaped nozzles with each orifice not less than O.iU3, inches in diameter) . 13. The working boom length on fixed wing aircraft shall not e.-ceed 3/4 of the wing span . The working boom length on helicopters shall not exceed 6/7 of the total rotor length or 3/4/ of the total rotor length where the rotor length exceeds forty (40) feet. ** Last Page ***