30.63A.820 Phased submittal of full stormwater site plans.
An applicant may phase the submittal of a full stormwater site plan pursuant to this section.
(1) When a project requires a full stormwater site plan, and the proposed development activity is subject to a public hearing where the hearing examiner has original jurisdiction, an applicant may submit a targeted stormwater site plan pursuant to SCC 30.63A.805, along with the underlying permit application, to initiate review.
(2) As part of a phased submittal, in addition to compliance with minimum requirements 1 through 5 (SCC 30.63A.400 through 30.63A.525), the targeted stormwater site plan shall comply with additional requirements as follows:
(a) If the site analysis required by minimum requirement 1 identifies site conditions that require compliance with minimum requirement 6, 7 or 8, the targeted stormwater site plan shall address water quality treatment, flow control, and wetlands protection pursuant to SCC 30.63A.530 through SCC 30.63A.570, when applicable.
(b) Detailed engineering and design information shall be provided when required by the director for site-specific conditions, development in the public right-of-way, or compliance with any required conveyance sizing, on-site stormwater management BMPs, LID design or detention or treatment design, as needed to protect the public health, safety and welfare.
(3) The department shall review the targeted stormwater site plan and make written findings regarding whether it adequately assesses the LID feasibility for the project as proposed and whether the proposed new development or redevelopment will:
(a) Adversely affect existing water quality conditions of any surface or ground water;
(b) Alter the existing surface or subsurface drainage patterns or flow rates on or off the site;
(c) Increase peak discharge or stormwater runoff volume sufficiently to cause adverse impacts downstream; or
(d) Cause erosion, sedimentation or flooding on upstream or downstream properties.
(4) The department shall provide a written recommendation regarding the targeted stormwater site plan to the hearing examiner. If the department recommends conditional approval of the targeted stormwater site plan, the recommendation shall include a statement requiring the submittal and approval of a full stormwater site plan, which must be found by the department to comply with the requirements of this chapter prior to any construction plan approval.
(5) If the hearing examiner approves the new development or redevelopment, the approval shall be conditioned upon submittal of a full stormwater site plan to the department which complies with minimum requirements 1 through 9 (SCC 30.63A.400 through SCC 30.63A.605).
(6) The applicant shall not initiate construction until the department approves a full stormwater site plan and issues construction permits. (Added by Amended Ord. 10-026, June 9, 2010, Eff date Sept. 30, 2010; Amended by Ord. 15-102, Jan. 11, 2016, Eff date Jan. 22, 2016).