This document is a quiz on site selection, water efficient practices, and sustainable stormwater design. It contains 20 multiple choice or short answer questions about topics like the impacts of straight pipe infrastructure, effects of impervious surfaces, green stormwater design principles, types of pervious paving, benefits of green roofs and living walls, what is greywater and how it differs from blackwater, water harvesting calculations, points systems for LEED and Green Point Rating water efficiency certifications, highest water using fixtures in homes, practices for efficient domestic water use, and determining home water leaks.

1. Site Selection/Design and Water Efficient Practices -
QUIZ
1. Name two impacts of the current infrastructure practice of straight lines to low
points.
Answer: Lost biodiversity, low stream flows, increased heat, more flooding, energy
impacts, water quality unsafe and unsanitary
2. Name three effects of impervious surfaces.
Answer:
a) Less infiltration of water and less replenishing the water table
b) More runoff into storm drains, and thus polluting our streams and waterways
c) More heat island effect d) Less evapotranspiration
3. What are three basic Sustainable Stormwater Design Principles?
Answer:
4. Give an example of how one of these design principles can be put into practice on a
municipal level.
Answer: a) Insert landscaping with bioswale in a street b) stormwater curb extensions
5. How does pervious paving work?

2. Answer:
6. Name two types of pervious paving.
Answer: Pervious concrete or asphalt with filter course, pervious joint concrete pavers set in
sand bed, gravel surface with reinforcing grid, grass surface with reinforcing grid
7. What is the difference between a “green roof” and a “living roof”?
Answer: Green roof can be a metal roof, or a roof made from sustainable materials.
A living roof is a roof with vegetation, typically native, drought tolerant plants, irrigation
and a waterproof membrane under the system.

3. 8. Name at least three benefits of a “Living wall”.
Answer: Water filtration, Storm-water conveyance, Storm-water detention, Reduction
of cooling demand, Habitat for birds and butterflies, Air quality, Aesthetic benefit,
Mitigate “Urban Heat Island”
9. What is greywater?
Answer: Greywater is water from a sink, shower, tub or laundry.
10. What is not considered black water?
Answer: Water from the kitchen sink, garbage disposal, dishwasher or toilet.
11. What are the benefits of a greywater system?
Answer: Reduces the amount of potable water used for landscaping and toilet flushing,
reduces the load on a septic system and waste treatment facilities, less water use
saves energy , adds nutrients to the soil as it filters the waste water
12. How many gallons of water can be harvested on a 2000 SF standard roof with 1” of
rainfall?
a) 500 b) 600 c) 1,000 d) 1,200
EASY METHOD (standard roof only):
each 1,000 SF of catchment area - 1” of rainfall = 600 gallons
Answer: 2,000 SF @ 1” rainfall = 1,200 gallons
13. What does LEED stand for?
Answer: Leadership in Energy and Environmental Design
14. What are the perquisite points for Water Efficiency in the LEED system?
Answer: There are no Prerequisites for Water Efficiency. There are five possible points.
15. What are the minimum points required for Green Point Rating?
a) 32 b) 50 c) 52 d) 69
Answer: 50 points are required for Green Point Rating.
16. In the Green Point Rating system there are 47 possible points given for Water.
The number required points for water are:
a) 4 b) 6 c) 7 d) 9
Answer: 9 points are required
17. Which fixture in a typical house uses the most water on a daily basis?
a) shower b) washing machine c) toilet d) sinks
18. Name three practices for efficient use of domestic water.
Answer:
•Distribute Hot Water Efficiently
–Insulate Water Heater

4. –Insulate Hot Water Pipes
–Install On Demand Circulation Pumps
–Locate Water Heater Within 12’ of Fixtures
•High Efficiency Toilets
•Water Efficient Fixtures
. No Plumbing Leaks
19. How do you determine if there are leaks between the water main and the house?
Answer: Turn off the main shutoff valve at the house and look to see if the meter is
running.
20. What percentage of a home’s water usage is typically for the landscaping?
a) 10-20% b) 20-30% c) 30-60%
Answer: 30-60% of a typical home’s water usage is for the yard.