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Replace the second sentence of the paragraph with "Temporary irrigation systems used for plant establishment are allowed only if removed within a period not to exceed 18 months of installation."

Date: 
Monday, July 19, 2010
Updated date: 
Saturday, February 14, 2015
Internationally Applicable: 
Campus Applicable: 
Ref Guide Name and Edition Pre-v4: 
Green Building Design and Construction, 2009 edition
Credits: 
USGBC nid: 
2650948