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Opening of Bids - VPA 2019 Chemical Supply - Harrell's LLC
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Opening of Bids - VPA 2019 Chemical Supply - Harrell's LLC
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4/7/2025 3:23:30 PM
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1/8/2019 11:10:24 AM
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Board of Public Works
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Projects
Document Date
1/8/2019
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• Nozzle Type — Use a nozzle type that is designed for the intended application. With most nozzle types, narrower spray angles produce larger droplets. Consider using <br />low -drift nozzles. Solid stream nozzles oriented straight back produce the largest droplets and the lowest drift. <br />• Boom Length — For some use patterns, reducing the effective boom length to less than 3/4 of the wingspan or rotor length may further reduce drift without reducing swath width. <br />• Application Height — Applications must not be made at a height greater than 10 feet above the top of the target plants unless a greater height is required for aircraft <br />safety. Making applications at the lowest height that is safe reduces exposure of droplets to evaporation and wind. <br />SWATH ADJUSTMENT <br />When applications are made with a crosswind, the swath will be displaced downwind. Therefore, on the up and downwind edges of the field, the applicator must compensate <br />for this displacement by adjusting the path of the aircraft upwind. Swath adjustment distance should increase with increasing drift potential (higher wind, smaller drops, etc.). <br />WIND <br />Drift potential is lowest between wind speeds of 2-10 mph. However, many factors, including droplet size and equipment type determine drift potential at any given speed. <br />Application must be avoided below 2 mph due to variable wind direction and high inversion potential. NOTE: Local terrain can influence wind patterns. Every applicator <br />should be familiar with local wind patterns and how they affect spray drift. <br />TEMPERATURE AND HUMIDITY <br />When making applications in low relative humidity, set up equipment to produce larger droplets to compensate for evaporation. Droplet evaporation is most severe when <br />conditions are both hot and dry. <br />TEMPERATURE INVERSIONS <br />Applications must not occur during a temperature inversion because drift potential is high. Temperature inversions restrict vertical air mixing, which causes small sus- <br />pended droplets to remain in a concentrated cloud. This cloud can move in unpredictable directions due to the light variable winds common during inversions. Temperature <br />inversions are characterized by increasing temperatures with altitude and are common on nights with limited cloud cover and light to no wind. They begin to form as the sun <br />sets and often continue into the morning. Their presence can be indicated by ground fog; however, if fog is not present, inversions can also be identified by the movement <br />of smoke from a ground source or an aircraft smoke generator. Smoke that layers and moves laterally in a concentrated cloud (under low wind conditions) indicates an <br />inversion, while smoke that moves upward and rapidly dissipates indicates good vertical air mixing. <br />SENSITIVE AREAS <br />The pesticide must only be applied when the potential for drift to adjacent sensitive areas (e.g., residential areas, bodies of water, known habitat for threatened or endan- <br />gered species, non -target crops) is minimal (e.g., when wind is blowing away from the sensitive areas). <br />Avoid direct application to any body of water. <br />Aircraft Maintenance —Thoroughly wash aircraft, especially landing gear, after each day of spraying to remove residues of this product accumulated during spraying or from <br />spills. PROLONGED EXPOSURE OF THIS PRODUCT TO UNCOATED STEEL SURFACES MAY RESULT IN CORROSION AND POSSIBLE FAILURE OF THE PART. LANDING GEAR ARE <br />MOST SUSCEPTIBLE. The maintenance of an organic coating (paint), which meets aerospace specification MIL-C-38413, may prevent corrosion. <br />FOR AERIAL APPLICATION IN CALIFORNIA ONLY <br />Aerial applications of this product are allowed in the following situations: <br />1. In fallow and reduced tillage systems prior to the emergence or transplanting of labeled crops. <br />2. In alfalfa and pasture renovation applications. <br />3. Over -the -top applications in Roundup Ready® corn and cotton. <br />4. Preharvest in alfalfa, corn, cotton, wheat, Roundup Ready® corn and Roundup Ready® cotton. <br />Do not plant subsequent crops other than those listed in the label booklet for 30 days following application. <br />When tank mixing this product with 2,4-D for aerial applications, only 2,4-D amine formulations may be used. This tank mixture may be used for fallow and reduced tillage <br />systems and alfalfa and pasture renovation applications only. <br />DO NOT EXCEED A MAXIMUM RATE OF 2 QUARTS PER ACRE OF THIS PRODUCT WHEN MAKING APPLICATIONS BY AIR IN FALLOW AND REDUCED TILLAGE SYSTEMS AND <br />ALFALFA AND PASTURE RENOVATION APPLICATIONS. <br />DO NOT EXCEED A MAXIMUM RATE OF 1 QUART PER ACRE OF THIS PRODUCT WHEN MAKING APPLICATIONS BY AIR IN ALFALFA, CORN, COTTON, WHEAT, ROUNDUP READY° <br />CORN AND ROUNDUP READY® COTTON PRIOR TO HARVEST. THIS RESTRICTION ALSO APPLIES TO OVER -THE -TOP APPLICATIONS IN ROUNDUP READY® CORN AND COTTON. <br />Aerial Equipment <br />Use the recommended rates of this product in 3 to 15 gallons of water per acre. <br />Use the following guidelines when aerial applications are made near crops or desirable perennial vegetation after bud break and before total leaf drop, and/or near other <br />desirable vegetation or annual crops. <br />1. Do not apply within 100 feet of all desirable vegetation or crop(s). <br />2. If wind up to 5 miles per hour is blowing toward desirable vegetation or crop(s), do not apply within 500 feet of the desirable vegetation or crop(s). <br />3. Winds blowing from 5 to 10 miles per hour toward desirable vegetation or crop(s) may require buffer zones in excess of 500 feet. <br />4. Do not apply when winds are in excess of 10 miles per hour or when inversion conditions exist. <br />
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