COLORADO QS/CO PESTICIDE FINAL EXAM STUDY GUIDE 2025/2026 ACCURATE QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES || 100% GUARANTEED PASS <RECENT VERSION>

COLORADO QS/CO PESTICIDE FINAL EXAM STUDY GUIDE 2025/2026 ACCURATE QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES || 100% GUARANTEED PASS &lt;RECENT VERSION&gt; 1. Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) - ANSWER Laws that provide federal control of pesticide distribution, sale, and use. EPA carries out enforcement. Users must take exams for certification as applicators. EPA must register new pesticides and re-register all existing pesticides. Applies to people who manufacture, market, distribute, use, or dispose of pesticide products. 2. What are the two main pesticide classifications? - ANSWER General use and restricted use 3. General Use Pesticide - ANSWER Generally have a lower toxicity and have less potential to harm humans or the environment Can be bought and used by the public without special permits or restrictions 4. Restricted Use Pesticide (RUPs) - ANSWER Might result in an unreasonable adverse effect on human health and/or the environment Application by trained persons is required to use these products This classification will be stated on the label 5. Pesticide Registration - ANSWER Since 1988, the EPA has been in charge of this. A pesticide must have a substantially complete database and must not cause unreasonable risks to human health or the environment when used in accordance with its approved label directions and precautions. 6. 4 types of pesticide registration - ANSWER Section 3 - full federal label Section 18 - emergency exemptions Section 24c - special local needs label Section 25b - minimum risk pesticides 7. Pesticide Registration: Section 3 - Full Federal Label - ANSWER Outlines pesticide registration requirements that manufacturers must follow. Most pesticides are registered this way 8. Pesticide Registration: Section 18 - Emergency Exemptions - ANSWER Allows state and federal agencies to permit an additional use during a short term pest management crisis in a specific locality. Manufacturer is not allowed to advertise or promote the use of the product under this, even though the use is legal. This is used when there is a crisis and there are no federally registered pesticides available to control the problem. 9. Why is proper pesticide storage important (5)? - ANSWER Protects people and animals from exposure Reduces the chances of environmental contamination Prevents damage to pesticides from temperature extremes and excess moisture Safeguards the pesticide from theft, vandalism, and unauthorized use Reduces the likelihood of liability 10. Pesticide storage best practices (9) - ANSWER Should have concrete floor Structure should be fire resistant Should have on-site fire extinguisher Adequate ventilation Insulation and supplemental heating Adequate lighting Never store with food Store in original containers with the label Running water should be close by 11. Pesticide Security Procedures (11) - ANSWER Follow storage responsibilities outlined in CO Pesticide Applicators Act Limit access Keep list of emergency phone numbers Post emergency phone numbers at entrance to storage area Inspect facilities at least once a week Secure application equipment Keep inventory of products Do not keep excess inventory Keep labels and MSDS Protect confidential information All employees who handle pesticides should have proper training 12. Best Practices for a Pesticide Fire (7) - ANSWER Notify the FD and tell them what is being stored there Evacuate and isolate downwind areas Do not take unnecessary risks When fighters arrive, inform them again of products that are stored within Local authorities should be allowed to let the structure burn down if necessary Vehicles and other equipment should be moved away if it is safe to do so Dikes should be constructed to prevent excess water from contaminating surrounding area 13. Appropriate pesticide mixing and loading area - ANSWER Outdoors or indoors (well ventilated and lit) away from unprotected people, animals, food, and other items that could be contaminated 14. Back-Siphoning and how to avoid this - ANSWER Reverse flow of a liquid into a fill hose. Always make sure there is an air gap between the hose and the tank. 15. Pesticide Tank Mixing Order - ANSWER Fill tank 1/5 to 1/2 full with carrier Start agitation Add compatibility agent (if needed) Add suspension products - first add dry formulations, then liquids Add solution products Add surfactants or other adjuvants Add emulsion products 16. Procedures to Applying Pesticide - ANSWER Take time to be sure pesticide is reaching the surface or area toward which you are directing it Apply pesticide evenly and in the correct amounts Ensure pesticide maintains a uniform mix or appearance during application Check hoses, valves, nozzles, hoppers, and other equipment parts often during the application Turn equipment off when you pause for any reason Move to an untreated area to correct any problems with application equipment Check label for post-application requirements 17. When should pesticide equipment be cleaned? - ANSWER Immediately after use if you are going to use a different pesticide in the tank 18. What is the most important maintenance practice for pesticide equipment? - ANSWER Thorough and consistent cleaning 19. Best Cleaning Practices for Yourself After Applying - ANSWER Wash hands and face thoroughly with soap and water before eating, drinking, smoking, or using the bathroom Shower and change clothing as soon as possible Make sure to scrub scalp, neck, behind your ears, and under your nails 20. What are some ways to reduce production of pesticide waste (4)? - ANSWER Purchase only the amount of pesticide needed to accomplish the job Mix only the amount needed to cover the intended site Protect pesticides from damage and contamination Use pesticides before they are no longer effective 21. What to do with canceled or banned pesticides (3)? - ANSWER Check if there is a recall program available If legal, use the remaining product according to the label Dispose through the Colorado Chemsweep pesticide waste collection program 22. What is hazardous waste? - ANSWER A solid, liquid, or contained gas material that is no longer used or that no longer serves the purpose for which it was produced, and could pose dangers to human health and the environment after it is discarded 23. Why is proper rinsing and handling of empty pesticide containers important (4)? - ANSWER Protects humans by removing hazardous materials Prevents sources of environmental contamination Saved you money by putting all the product into the spray tank Makes recycling or disposal of clean containers convenient and inexpensive 24. General Pesticide Container Handling Guidelines (4) - ANSWER Never abandon empty containers - this is against the law When mixing, add container rinse water to the spray mix to avoid disposal problems When purchasing pesticides, think about how you will dispose of the container Do NOT reuse pesticide containers for other purposes even if the pesticide is considered to be only slightly toxic 25. At least how many times do you need to rinse a pesticide container? - ANSWER 3 times at least 26. Triple rinse procedure - ANSWER 1. Empty as much of pesticide into the sprayer. Turn containers that are 5 gallons or smaller upside down over the spray tank 2. Add water or the mixing liquid to fill the empty container about 1/4 full 3. Cap container and shake smaller thoroughly. 4. Drain container completely by holding it over spray tank or pumping out liquid 5. Repeat process 2 more times 6. Puncture or crush container to prevent reuse 27. What are natural controls of pesticide application? - ANSWER These are naturally occurring biological and environmental agents 28. Examples of natural controls of pesticide application - ANSWER Climate, natural enemies, natural barriers, availability of shelter, food, and water 29. Pesticide drift - ANSWER The movement of pesticide to other areas other than the intended area of application 30. Pesticide vitalization or volatility - ANSWER Drift of pesticides when they evaporate from the application site and travel as fumes. 31. What affects the potential for pesticide drift (4)? - ANSWER Pesticide formulation Droplet size Height of pesticide release Weather 32. How does droplet size impact drift potential? - ANSWER Larger are less likely to travel than smaller droplets. Large nozzles and lower pressure decrease this 33. What methods should be used to minimize the number of small particle droplets while still allowing sufficient coverage? - ANSWER 1. Reduce sprayer pressure 2. Use drift reducing nozzles 3. Use thickening or drift control adjuvants 34. How does height of pesticide release impact drift potential? - ANSWER These can affect the time that it takes for spray droplets to reach the soil or plant. The higher you release, the greater the risk for travel 35. How do weather conditions impact drift potential? - ANSWER Air movement and high winds can make droplets travel. Temperature and humidity will impact evaporation of droplets. 36. What mph of wind should pesticides never be applied at? - ANSWER 10+ 37. What combo of temperature and humidity is bad for applciation? - ANSWER Very high temp (85-90+), low humidity 38. How does temperature and humidity impact drift potential? - ANSWER Particles evaporate more rapidly at high temperatures and low humidity, producing smaller droplets that can travel easier. 39. What is a temperature inversion? - ANSWER When the air near the soil surface remains cooler than the air above. Temperatures increase the higher one goes during these conditions. 40. What are a few ways to recognize a temperature inversion (4)? - ANSWER They can occur at any time, but most often in the early evening hours They intensify during the night and may persist until mid-morning Use dust or smoke movement to check for one If dust or smoke rises only slightly from its source and tends to hang in the air, that is a good sign one is developing 41. What are some ways surface water can become polluted with pesticide (4)? - ANSWER Drift Accidental application into water Disposal of waste at unapproved sites Runoff from irrigation or rainfall 42. What is an aquifer? - ANSWER A water saturated zone of soil, sand, gravel, or fractured bedrock 43. What is the upper layer of an aquifer known as? - ANSWER The water table 44. How does groundwater become contaminated with pesticide? - ANSWER When recharge water carries dissolved chemicals through the soil profile into the water table 45. What is a plume? - ANSWER Chemical contaminated area of an aquifer 46. What are some factors that contribute to groundwater contamination (4)? - ANSWER Site conditions Pesticide characteristics Application method Environmental conditions post application 47. Site conditions associated with groundwater contamination - ANSWER Soil texture Soil permeability Soil organic matter Soil pH Depth of water table 48. Pesticide characteristics affecting groundwater pollution - ANSWER Water solubility Environmental persistence Electrical charge 49. What does NIOSH stand for? - ANSWER National Institute for Occupational Safety and Health 50. What should be the last piece of PPE to come off? - ANSWER Gloves should be the last piece to come off. 51. What is Chronic Toxicity? - ANSWER Prolonge or frequently repeated exposure to lower toxicant doses. (long-term) 52. When do you have the greatest chance of pesticide exposure ? - ANSWER When mixing and loading as applicators handle the pesticide concentrate 53. How should pesticide be transported ? - ANSWER Always in the back of a truck in containers with intact, undamaged, and readable labels. 54. What is cholinesterase? - ANSWER An enzyme needed for the proper functioning of the nervous system 55. What is not easily absorbed through the skin ? - ANSWER Wettable powders, dust, and granular pesticide 56. What is acute toxicity? - ANSWER Results from a single exposure or several exposures over a short period of time (&lt;24 hr.) 57. What is LD 50 and LC 50? - ANSWER It is a term used to express the acute toxicity of a pesticide.