CGM Remediation & Mitigation Strategies 2

Question 1

Which bioremediation technique involves introducing oxygen and nutrients into contaminated groundwater to stimulate indigenous microbial degradation?

Accepted Answer

Air sparging with nutrient injection

Answer

Air sparging with nutrient injection enhances in-situ bioremediation by providing oxygen and nutrients that stimulate native microorganisms to degrade contaminants.

Question 2

A grounds manager discovers lead contamination in a children's play area. What is the MOST immediate remediation priority?

Accepted Answer

Install a clean soil cap and restrict access

Answer

Installing a clean soil cap and restricting access immediately eliminates exposure risk while a long-term remediation plan is developed.

Question 3

What does the term 'pump-and-treat' refer to in groundwater remediation?

Accepted Answer

Extracting contaminated groundwater, treating it above ground, and reinjecting or discharging it

Answer

Pump-and-treat systems extract contaminated groundwater to the surface for treatment before safe discharge or reinjection.

Question 4

Which cover crop is most effective at mitigating soil erosion on a steep slope during winter months in the mid-Atlantic US?

Accepted Answer

Winter rye

Answer

Winter rye establishes quickly in cool temperatures and provides dense ground cover through the winter, effectively protecting slopes from erosion.

Question 5

A turf area shows compaction-induced water runoff. Which mitigation strategy provides the longest-lasting benefit?

Accepted Answer

Deep-tine aeration followed by organic matter incorporation

Answer

Deep-tine aeration combined with organic matter incorporation improves soil structure and macroporosity for long-term compaction relief.

(CGM) Certified Grounds Manager Practice Test

(CGM) Certified Grounds Manager Practice Test

CGM Remediation & Mitigation Strategies 2