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(1) The following land disturbing activities require the submittal of construction plans prepared by and stamped by an engineer licensed in the State of Washington:

(a) All grading activity within two feet of a site boundary line;

(b) All land disturbing activity in excess of 5,000 cubic yards;

(c) All land disturbing activity located within public or private roads and their rights-of-way, tracts, or easements;

(d) All land disturbing activity that is subject to environmental review under chapter 30.61 SCC or is related to development activity that is subject to environmental review under chapter 30.61 SCC;

(e) All land disturbing activity projects that require civil engineering, as determined by the department pursuant to subtitle 30.5 SCC and IBC sections 1803.3, 1803.6, and 1804.5(2);

(f) All land disturbing activity that has drainage impacts that are required to be mitigated by construction of detention, water quality treatment (including low impact development best management practices used to meet requirements of Minimum Requirement 6 per the Drainage Manual), and/or bioretention systems; and

(g) All land disturbing activity that may cause impacts to wetlands or streams as described in chapter 30.63A SCC or volume I of the Drainage Manual.

(2) Engineered construction plans for the land disturbing activities identified in subsection (1) of this section shall also comply with chapter 30.52A SCC and the EDDS. (Added by Amended Ord. 10-023, June 9, 2010, Eff date Sept. 30, 2010; Amended by Ord. 15-103, Jan. 11, 2016, Eff date Jan. 22, 2016; Amended by Amended Ord. 17-070, Nov. 1, 2017, Eff date Dec. 1, 2017; Amended by Amended Ord. 18-106, Jan. 16, 2019, Eff date Jan. 27, 2019).