C
Landscape
VERIFICATION
Documentation: The Rater will collect a shade study with calculations that show a minimum of 50 % shading of trees based on mature size.
INTENT
To utilize tree placement to reduce heating and cooling loads and the impact of residual heat build-up in developed areas( that is, the urban heat island effect). To reduce the evapotranspiration of water and stormwater runoff.
C6. HIGH-EFFICIENCY IRRIGATION SYSTEM THAT USES LOW-FLOW DRIP,
BUBBLERS, OR SPRINKLERS
CRITERIA FOR QUALIFICATION
Two points of credit are available for a project landscape design that provides for efficient irrigations and accounts for irrigation head performance specifications. All irrigation systems must be designed to prevent runoff, overspray, low-head drainage, and other similar conditions that cause water to flow onto nonirrigated areas, walks, roadways, or structures.
Avoid narrow and odd-shaped turf areas.
For non-turf areas, the maximum emitter flow rate should be 1 gallon / minute. Shrub areas should be irrigated exclusively with drip, bubblers, or low-flow( microspray) sprinklers.
Turf areas should be irrigated with efficient spray heads( such as multi-stream rotors) that have a maximum flow rate of one inch per hour. Turf irrigation design should not exceed 100 % head-to-head coverage. Do not use impact sprinklers or standard fan spray heads that create a misting spray.
Projects with plantings that require either no permanent irrigation or only temporary irrigation( that is, driponly irrigation operated only during the first two years of the establishment period) also meet this credit.
Turf is included in this measure. This measure applies to all projects that include landscaping, including planter boxes. This measure does not apply to projects that do not have an irrigated landscape.
VERIFICATION
DRAFT
Field Verification: The Rater will complete field verification and take representative photos of high efficiency irrigation system is installed.
Documentation: The Rater will collect the following:
� An Accountability Form with measure criteria signed by the landscape architect or irrigator. � Supporting documentation( including an irrigation plan) that indicates the specifications of the irrigation system that meets the low flow requirements of this measure.
INTENT To reduce water consumption and promote healthier plants and trees with efficient irrigation systems.
DRAFT GreenPoint Rated New Home Rating Manual 18 Version 6.0, September 2013
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