CMI Compliance with Environmental Sustainability Standards 5 — Questions and Answers
Question 1: Under which condition is it permissible to mix two different cleaning chemicals together?
- Only when the manufacturer's instructions explicitly state they are compatible (Correct answer)
- When both chemicals are labeled as non-toxic
- When both chemicals are water-based
- When a supervisor gives verbal approval
Correct answer: Only when the manufacturer's instructions explicitly state they are compatible
Chemicals should only be mixed when manufacturers specifically state compatibility, as many common combinations (e.g., bleach and ammonia) create toxic gases.
Question 2: A custodial program is certified under ISSA's Cleaning Industry Management Standard (CIMS). What does this certification indicate about sustainability?
- The organization demonstrates best practices in cleaning management, including environmental stewardship (Correct answer)
- All products used are USDA Certified Biobased
- The facility has achieved a zero-waste designation
- Staff are certified to handle EPA-registered disinfectants
Correct answer: The organization demonstrates best practices in cleaning management, including environmental stewardship
CIMS certification, including the optional Green Building designation, demonstrates that a cleaning organization meets industry standards for quality and sustainable practices.
Question 3: Why should custodians avoid using hot water when cold or warm water is sufficient for a cleaning task?
- Hot water consumes more energy, increasing the facility's carbon footprint (Correct answer)
- Hot water degrades microfiber cloths faster than cold water
- Hot water activates chemical residues in drain lines
- Hot water requires additional PPE under OSHA standards
Correct answer: Hot water consumes more energy, increasing the facility's carbon footprint
Heating water requires energy; using the lowest effective temperature reduces energy consumption and the associated greenhouse gas emissions.
Question 4: A custodian is asked to clean a LEED-certified building's restrooms. Which product characteristic is most important to verify before use?
- The product meets VOC content limits specified in the LEED IEQ credit requirements (Correct answer)
- The product container is made from 100% post-consumer recycled plastic
- The product is fragrance-free and dye-free
- The product is registered with the EPA as a hospital-grade disinfectant
Correct answer: The product meets VOC content limits specified in the LEED IEQ credit requirements
LEED IEQ credits specify VOC content limits for cleaning products to protect indoor air quality, and using non-compliant products can jeopardize the building's certification.
Question 5: What is the environmental risk of improperly storing cleaning chemicals near floor drains?
- Spills or leaks can enter the stormwater system and contaminate local waterways (Correct answer)
- Chemical vapors can enter HVAC systems faster
- It violates OSHA lockout/tagout requirements
- Chemicals will degrade faster due to humidity near drains
Correct answer: Spills or leaks can enter the stormwater system and contaminate local waterways
Floor drains often connect to stormwater systems, so chemical spills near them can bypass wastewater treatment and discharge directly to waterways.
Question 6: A facility is implementing a sustainability initiative and asks custodians to track chemical usage. What is the primary purpose of this tracking?
- To identify overuse, reduce waste, and demonstrate progress toward sustainability goals (Correct answer)
- To ensure chemicals are repurchased before they run out
- To comply with OSHA's Hazard Communication Standard
- To verify staff are using premium products instead of generics
Correct answer: To identify overuse, reduce waste, and demonstrate progress toward sustainability goals
Usage tracking reveals patterns of overuse or waste, enables cost and environmental impact reductions, and provides data to document sustainability progress.
Question 7: Which of the following is an example of 'source reduction' in a sustainable custodial program?
- Switching from single-use product packets to a bulk dispenser system (Correct answer)
- Recycling empty chemical containers after use
- Using a neutralizer before disposing of acidic cleaners
- Purchasing carbon offsets for cleaning product shipping
Correct answer: Switching from single-use product packets to a bulk dispenser system
Source reduction means generating less waste in the first place; bulk dispensers eliminate the packaging waste created by individual single-use packets.
CMI Compliance with Environmental Sustainability Standards 5
Under which condition is it permissible to mix two different cleaning chemicals together?