Chapter 21B.85
DEVELOPMENT STANDARDS – INTERIM STORMWATER STANDARDS Repealed Ord. O2021-540 SeeTitle 21: Sammamish Development Code

Sections:

21B.85.010    Purpose and intent. Repealed Ord. O2021-540 SeeTitle 21: Sammamish Development Code

21B.85.020    Applicability. Repealed Ord. O2021-540 SeeTitle 21: Sammamish Development Code

21B.85.030    Town Center interim stormwater standards adopted. Repealed Ord. O2021-540 SeeTitle 21: Sammamish Development Code

21B.85.040    Review and appeal. Repealed Ord. O2021-540 SeeTitle 21: Sammamish Development Code

21B.85.010 Purpose and intent. Repealed Ord. O2021-540 SeeTitle 21: Sammamish Development Code

Low impact development (LID) is an approach to land use planning and project design that seeks to:

(1) Increase the ability of a developed site to effectively emulate predevelopment hydrologic conditions, including, without limitation, stormwater retention, water quality treatment, and infiltration functions;

(2) Minimize overland stormwater runoff from a developed site;

(3) Maximize the retention of trees, native vegetation, understory plants, and native soils;

(4) Minimize soil disturbance;

(5) Minimize the conversion of site surfaces from vegetated to nonvegetated surfaces; and

(6) Maximize the quantity and use of appropriate native plants on site.

The purpose of this chapter is to require that development proposals within the Town Center sub-area fully incorporate the interim stormwater standards and low impact development into all aspects of project design. (Ord. O2016-429 § 12 (Att. L); Ord. O2010-293 § 1 (Att. A))

21B.85.020 Applicability. Repealed Ord. O2021-540 SeeTitle 21: Sammamish Development Code

(1) The provisions of this chapter shall apply to all land uses in the City of Sammamish Town Center zones, and all persons within the Town Center shall comply with the requirements of this chapter.

(2) The City shall not approve any permit or otherwise issue any authorization to alter the condition of any land, water or vegetation or to construct or alter any structure or improvement without first assuring compliance with the requirements of this chapter.

(3) Approval of a development proposal pursuant to the provisions of this chapter does not discharge the obligation of the applicant to comply with the provisions of this chapter. (Ord. O2016-429 § 12 (Att. L); Ord. O2010-293 § 1 (Att. A))

21B.85.030 Town Center interim stormwater standards adopted. Repealed Ord. O2021-540 SeeTitle 21: Sammamish Development Code

(1) Stormwater standards in the Town Center shall be in accordance with the adopted Surface Water Design Manual and Sammamish Addendum.

(2) The City is hereby authorized, subject to the review provisions of SMC 21B.85.040, to modify the stormwater requirements, standards, and specifications. (Ord. O2016-429 § 12 (Att. L); Ord. O2010-293 § 1 (Att. A))

21B.85.040 Review and appeal. Repealed Ord. O2021-540 SeeTitle 21: Sammamish Development Code

(1) Process. The use of the stormwater standards and specifications, along with applicable low impact development design, shall be reviewed concurrently with a primary proposal to consider the proposed site plan and methods used to earn the incentives as follows:

(a) For the purpose of this section, a “primary proposal” is defined as a proposed unified zone development plan, subdivision, binding site plan, conditional use permit, or commercial site development permit;

(b) The applicant shall identify the primary proposal’s low impact development improvements at the time of application;

(c) When the primary proposal requires a public hearing under this title or SMC Title 19A or 20, the public hearing on the primary proposal shall serve as the hearing on the stormwater standards and specifications and applicable low impact development improvements proposed, and the reviewing authority shall make a consolidated decision on the proposed development;

(d) When the primary proposal does not require a public hearing under this title or SMC Title 19A or 20, the stormwater standards and specifications, and applicable low impact development improvements, shall be subject to the decision criteria for conditional use permits outlined in Chapter 21A.100 SMC and to the procedures set forth in SMC Title 20 as a Type 2 land use decision type for conditional use permits; or permits requesting a drainage adjustment subject to full or large project drainage review and any project requiring drainage review in a critical drainage area under Chapter 13.20 SMC.

(2) Review. In evaluating a primary proposal and associated stormwater standards and specifications, and applicable low impact development improvements, the City shall have the authority to request additional technical information prepared by a certified professional to:

(a) Determine whether the development proposal is consistent with this chapter;

(b) Determine if a proposed approach is consistent with the standards of the King County Surface Water Design Manual, City of Sammamish Stormwater Comprehensive Plan, or the Low Impact Development Technical Guidance Manual for Puget Sound, or other suitable reference, as determined by the director;

(c) Determine whether the proposed combination of techniques adequately work together toward meeting the goals of this chapter;

(d) Determine if the monitoring plans and bonding measures proposed by the applicant are sufficient to protect the public benefit, health, safety, and welfare, consistent with this chapter; and

(e) Determine that the proposed LID approaches shall function as intended.

(3) Health and Safety. Approval of all proposed stormwater design and required low impact development improvements shall be subject to the review of the City to determine that the proposed development does not pose an unreasonable threat to the public health, safety, or welfare on or off the development proposal site and is consistent with the general purposes of this chapter and the public interest.

(4) Adjustments.

(a) Minor. Minor changes to proposed stormwater standards and specifications or low impact development improvements may be authorized by the City following approval of the primary proposal. Minor changes include, but are not limited to, changes related to improvement sizing, location, and components.

(b) Major. Major changes to proposed stormwater standards or specifications, or low impact development improvements, may not be authorized by the City following approval of the primary proposal. Major changes shall require re-submittal of the land use applications associated with the primary proposal. Major changes include, but are not limited to, elimination of proposed low impact development improvements and changes to site layout that preclude the success of approved low impact development improvements.

(5) Appeals. Any person or agency aggrieved by an act or decision of the City pursuant to this title may appeal said act or decision to the City of Sammamish pursuant to the appeal provisions for the underlying development permit application as contained in Chapter 20.05 SMC. (Ord. O2021-533 § 4 (Att. D); Ord. O2016-429 § 12 (Att. L); Ord. O2010-293 § 1 (Att. A))