Safety and Environmental Protection Flashcards
7 cards from real CFA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Safety and Environmental Protection flashcards as text
Which of the following fertilizer application scenarios presents the HIGHEST risk of phosphorus loss to surface water?
Answer: Broadcasting liquid phosphate on frozen, sloping ground before a thaw
Frozen soil cannot absorb nutrients or water, so snowmelt or rain carries surface-applied phosphorus directly into streams and lakes without any filtration.
What does the 4R Nutrient Stewardship framework stand for?
Answer: Right source, Right rate, Right time, Right place
The 4Rs — Right Source, Right Rate, Right Time, Right Place — provide a framework for optimizing fertilizer use efficiency and minimizing environmental impact.
When transporting bulk liquid fertilizer, USDOT regulations require that the tanker be placarded when the load exceeds:
Answer: 1,000 pounds of hazardous material
USDOT regulations generally require placarding when transporting 1,000 pounds or more of a hazardous material in a single container, with some materials requiring placards at any quantity.
Which environmental regulation most directly applies to a large fertilizer storage facility that handles more than 10,000 pounds of anhydrous ammonia?
Answer: EPA Risk Management Program (RMP) under Clean Air Act Section 112(r)
The EPA RMP requires facilities storing more than 10,000 pounds of anhydrous ammonia (a listed extremely hazardous substance) to develop and register a Risk Management Plan.
A soil test recommends 60 lbs P₂O₅/acre. If you are applying 11-52-0 (MAP) fertilizer, how many pounds of MAP per acre are needed?
Answer: 115 lbs/acre
MAP is 52% P₂O₅, so divide 60 ÷ 0.52 ≈ 115 lbs of MAP per acre to deliver the recommended 60 lbs P₂O₅.
Which practice is most effective at reducing ammonia volatilization losses when surface-applying urea?
Answer: Incorporating urea into the soil or applying before a light rainfall
Incorporation or rainfall moves urea below the soil surface where urease activity and volatilization are reduced, dramatically improving nitrogen retention.
Which of the following is considered a best management practice (BMP) for preventing fertilizer contamination of wellheads?
Answer: Maintaining a minimum setback distance and avoiding fertilizer applications in wellhead protection areas
Setback distances and restricting applications in wellhead protection areas prevent nutrients from entering the recharge zone and contaminating drinking water supplies.