ENV SP Water Conservation and Management 2

Question 1

Under Envision credit RA1.2 – Protect Freshwater Resources, which practice is most effective at reducing non-point source pollution entering waterways?

Accepted Answer

Using vegetated buffers and bioretention areas

Answer

Installing deeper stormwater detention tanks

Answer

Increasing impervious surface area near water bodies

Answer

Diverting all runoff to wastewater treatment plants

Question 2

What does 'stormwater runoff reduction' primarily achieve in urban infrastructure projects under the Envision framework?

Accepted Answer

Reduced peak flows and decreased pollutant loads to receiving waters

Answer

Faster evacuation of water from the watershed

Answer

Increased water consumption by the project

Answer

Elimination of the need for detention ponds

Question 3

Which of the following is an example of green infrastructure used to manage stormwater on infrastructure projects?

Accepted Answer

Green roofs and permeable pavements

Answer

Concrete culverts with large diameter pipes

Answer

Conventional storm drain inlets with grates

Answer

High-capacity underground cisterns without vegetation

Question 4

The concept of 'water balance' in a sustainability assessment requires the project team to account for which of the following?

Accepted Answer

All water inputs, outputs, and on-site storage over the project lifecycle

Answer

Only rainfall amounts during construction

Answer

The cost of municipal water supply only

Answer

Annual flood frequency statistics for the region

Question 5

In the Envision framework, why is protecting groundwater recharge areas important during infrastructure planning?

Accepted Answer

Disrupting recharge areas can reduce long-term availability of groundwater supplies

Answer

Recharge areas are typically abandoned industrial sites

Answer

Recharge areas have no ecological value

Answer

Protecting recharge areas increases stormwater runoff

Question 6

Which water quality parameter is most commonly monitored to assess the effectiveness of stormwater best management practices (BMPs)?

Accepted Answer

Total suspended solids (TSS) in runoff

Answer

Air temperature adjacent to the water body

Answer

Noise levels near retention ponds

Answer

Groundwater methane concentration

Question 7

How does reducing impervious surface coverage on a project site contribute to sustainable water management?

Accepted Answer

It promotes infiltration, replenishing groundwater and reducing peak runoff

Answer

It increases the speed of stormwater runoff

Answer

It eliminates the need for stormwater permits

Answer

It increases water consumption by landscaping