In a large site that has a short, intense rainy season and a long, dry season, what component of a collected rainwater irrigation system is most likely to make it cost prohibitive over a conventional system?

In a large site that has a short, intense rainy season and a long, dry season, what component of a collected rainwater irrigation system is most likely to make it cost prohibitive over a conventional system?
A . Irrigation piping systems
B . Irrigation control systems
C . Rainwater storage cisterns
D . Landscaping plant selection

Answer: C

Explanation:

Rainwater storage cisterns are components of a collected rainwater irrigation system that are most likely to make it cost prohibitive over a conventional system in a large site that has a short, intense rainy season and a long, dry season. A collected rainwater irrigation system is a system that collects, stores, and distributes rainwater for irrigation purposes. Rainwater storage cisterns are containers that store the collected rainwater until it is needed for irrigation. In a large site that has a short, intense rainy season and a long, dry season, the rainwater storage cisterns would need to be very large and durable to capture and store enough rainwater for the dry season. This would increase the initial cost and maintenance cost of the system compared to a conventional system that uses potable water or groundwater for irrigation1.

Reference: LEED v4 Green Associate Candidate Handbook1, EPA’s Rainwater Harvesting