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"Drainage manual" or "Snohomish County drainage manual" means the drainage manual adopted by the director of public works pursuant to SCC 30.63A.110. The drainage manual provides detail and specificity regarding the requirements of chapters 7.53, 7.54, 30.63A and 30.63B SCC. (Added by Amended Ord. 02-064, Dec. 9, 2002, Eff date Feb. 1, 2003; Amended by Amended Ord. 10-026, June 9, 2010, Eff date Sept. 30, 2010; Amended by Ord. 15-103, Jan. 11, 2016, Eff date Jan. 22, 2016).