CFA Safety and Environmental Protection 2 — Questions and Answers
Question 1: Which of the following best describes the primary route of fertilizer-related nitrate contamination of groundwater?
- Volatilization from soil surface into precipitation
- Leaching of excess nitrate through the soil profile below the root zone (Correct answer)
- Runoff carrying nitrate directly into surface water only
- Denitrification converting nitrate to nitrogen gas in groundwater
Correct answer: Leaching of excess nitrate through the soil profile below the root zone
Nitrate is highly water-soluble and moves downward through the soil profile with percolating water, contaminating groundwater when applied in excess of crop uptake.
Question 2: A Material Safety Data Sheet (SDS) Section 8 provides information primarily about:
- First aid measures and emergency response
- Exposure controls and personal protective equipment (Correct answer)
- Physical and chemical properties of the substance
- Ecological and environmental impact data
Correct answer: Exposure controls and personal protective equipment
SDS Section 8 covers exposure limits (PELs/TLVs), engineering controls, and required PPE for safe handling of the substance.
Question 3: When storing ammonium nitrate fertilizer, which material must NEVER be stored nearby?
- Potassium chloride
- Organic materials and fuels (Correct answer)
- Calcium carbonate
- Micronutrient blends
Correct answer: Organic materials and fuels
Ammonium nitrate is a strong oxidizer that can violently react with organic materials and fuels, creating a serious fire and explosion hazard.
Question 4: Under the Clean Water Act, which program requires operators to develop and implement a plan to prevent fertilizer pollution from reaching nearby waterways?
- Total Maximum Daily Load (TMDL)
- Spill Prevention, Control, and Countermeasure (SPCC)
- Stormwater Pollution Prevention Plan (SWPPP) (Correct answer)
- National Ambient Water Quality Standards (NAWQS)
Correct answer: Stormwater Pollution Prevention Plan (SWPPP)
A SWPPP identifies potential pollution sources on a site and describes practices to reduce pollutants, including fertilizers, in stormwater discharges.
Question 5: Which personal protective equipment is most critical when mixing concentrated liquid fertilizer solutions?
- Hard hat and steel-toed boots only
- Chemical-resistant gloves, eye protection, and apron (Correct answer)
- Dust mask and cotton gloves
- Hearing protection and reflective vest
Correct answer: Chemical-resistant gloves, eye protection, and apron
Concentrated liquid fertilizers are corrosive and can splash, making chemical-resistant gloves, eye/face protection, and a chemical-resistant apron essential.
Question 6: What is the purpose of a buffer zone or setback when applying fertilizer near a water body?
- To allow equipment to turn around safely
- To reduce nutrient runoff and protect aquatic ecosystems (Correct answer)
- To mark property boundaries between fields
- To improve air circulation around the application area
Correct answer: To reduce nutrient runoff and protect aquatic ecosystems
Buffer zones and setbacks create a vegetated strip that slows runoff, filters nutrients, and protects adjacent water bodies from fertilizer contamination.
Question 7: Eutrophication of water bodies caused by fertilizer runoff is most directly characterized by:
- Increased water clarity due to reduced suspended solids
- Excessive algae and aquatic plant growth leading to oxygen depletion (Correct answer)
- Acidification of the water column below pH 4
- Accumulation of heavy metals in fish tissue
Correct answer: Excessive algae and aquatic plant growth leading to oxygen depletion
Excess nutrients, especially nitrogen and phosphorus, fuel rapid algal blooms; when the algae die and decompose, bacteria consume oxygen and create hypoxic dead zones.
CFA Safety and Environmental Protection 2
Which of the following best describes the primary route of fertilizer-related nitrate contamination of groundwater?