CFA Safety and Environmental Protection Questions and Answers 1 — Questions and Answers
Question 1: An applicator is loading liquid UAN (28-0-0) into a sprayer tank when a hose ruptures, causing a significant spill onto a concrete containment pad. What is the IMMEDIATE first priority for the applicator?
- Use absorbent materials to clean up the spill.
- Notify the state environmental agency.
- Stop the flow of the fertilizer from the source. (Correct answer)
- Wash down the pad with water to dilute the spill.
Correct answer: Stop the flow of the fertilizer from the source.
The first step in any spill response is to control the source of the spill to prevent it from worsening. Before any containment or cleanup can effectively begin, the flow of the material must be stopped. This is often referred to as the 'Control' step in the 'Control, Contain, Clean up' spill response model.
Question 2: When handling anhydrous ammonia (82-0-0), which piece of Personal Protective Equipment (PPE) is most critical for protecting the applicator from severe chemical burns and respiratory damage?
- Leather gloves and standard safety glasses.
- Non-vented chemical splash goggles and ammonia-rated rubber gloves. (Correct answer)
- A disposable dust mask and cloth coveralls.
- Steel-toed boots and a hard hat.
Correct answer: Non-vented chemical splash goggles and ammonia-rated rubber gloves.
Anhydrous ammonia aggressively seeks water and can cause severe, permanent damage to moist tissues like the eyes, skin, and lungs. Therefore, non-vented goggles (to prevent gas from entering) and ammonia-rated rubber gloves are the minimum essential PPE to prevent devastating injuries. A respirator is also required for many situations.
Question 3: To protect surface water quality from nutrient contamination, which of the following is a critical best management practice when applying fertilizer near a river?
- Apply fertilizer directly up to the riverbank to treat the riparian zone.
- Increase the application rate to ensure rapid crop uptake.
- Ensure the spreader is turned off when crossing the river on a bridge.
- Establish and observe a mandatory no-application setback or buffer zone. (Correct answer)
Correct answer: Establish and observe a mandatory no-application setback or buffer zone.
Establishing a setback or buffer zone where no fertilizer is applied is a key regulatory requirement and best management practice. This untreated strip of land helps prevent direct application into the water and filters runoff, protecting against nutrient losses that can cause issues like algal blooms.
Question 4: A facility stores liquid fertilizer in multiple large above-ground tanks. To comply with environmental regulations and prevent groundwater contamination in case of a tank failure, what structural feature is required?
- A chain-link fence with a locked gate for security.
- An overhead roof to prevent rainwater from contacting the tanks.
- Secondary containment capable of holding at least 110-125% of the largest tank's volume. (Correct answer)
- A concrete foundation pad sloped away from all tanks.
Correct answer: Secondary containment capable of holding at least 110-125% of the largest tank's volume.
Secondary containment, such as a dike or basin, is a standard legal requirement for bulk liquid fertilizer storage. Its purpose is to contain a catastrophic leak from the primary tank. Regulations typically require the containment volume to be 110% to 125% of the largest tank's volume, plus displacement for other tanks and sometimes precipitation.
Question 5: Certain fertilizer materials, such as ammonium nitrate, are regulated by the Department of Homeland Security. Why is this specific fertilizer of particular concern from a safety and security standpoint?
- It has an extremely high salt index that can burn crops.
- It can be misused as a component in the manufacturing of illegal explosives. (Correct answer)
- It is highly corrosive to all metal application equipment.
- It readily leaches into groundwater as nitrate.
Correct answer: It can be misused as a component in the manufacturing of illegal explosives.
Ammonium nitrate, while an excellent fertilizer, can also be used as an oxidizer in homemade explosives. Because of this potential for misuse in terrorist activities, its sale, transfer, and storage are regulated to prevent theft and ensure it is only sold to legitimate users.
Question 6: Which of the following environmental conditions creates the HIGHEST risk for significant nitrate (NO3-) leaching into groundwater following a nitrogen fertilizer application?
- Heavy clay soil with poor drainage during a dry period.
- Sandy soil with low organic matter followed by heavy rainfall. (Correct answer)
- Silt loam soil with high organic matter during a period of warm, windy weather.
- Frozen, sloped ground with a significant snowpack.
Correct answer: Sandy soil with low organic matter followed by heavy rainfall.
Nitrate is highly soluble in water and is not held by negatively charged soil particles. Sandy soils have high permeability and low water-holding capacity, which allows water from heavy rainfall to move rapidly downward through the soil profile, carrying dissolved nitrates with it below the root zone and into groundwater.
CFA Safety and Environmental Protection Questions and Answers 1
An applicator is loading liquid UAN (28-0-0) into a sprayer tank when a hose ruptures, causing a significant spill onto a concrete containment pad.
What is the IMMEDIATE first priority for the applicator?