Ordinance 3676-19 - Laserfiche WebLink

monitoring, and contingency.This guarantee shall not be released until the applicant's qualified professional and the planning director sign off that maintenance and monitoring have been completed per the plan,and the mitigation meets performance goals. B. Stream, lake and buffer impact mitigation plans shall: 1. Include a baseline study that quantifies the existing functions of the system,functions that will be lost, and the stream and buffer functions after mitigation; 2. Specify how functions will be replaced; 3. Specify when mitigation will occur relative to project construction and to the requirements of permits issued by other agencies; 4. Where buffer enhancement is proposed, include an analysis of the ability of the buffer to protect water quality,as outlined in the Update on Wetland Buffers: The State of the Science, Final Report,October 2013. Washington State Department of Ecology Publication#13-06-11,or as amended. 5. Include provisions for maintaining and monitoring the mitigated area on a long-term basis to determine whether the plan was successful; 6. Include a contingency plan specifying what corrective actions will be taken should the mitigation not be successful; and 7. Include provisions for an assurance device as provided by Chapter 19.40 of this title to ensure that work is completed in accordance with the mitigation plan and that restoration or rehabilitation is performed in accordance with the contingency plan if mitigation failure results within five years of implementation. C. Construction Plans.Construction plans necessary to implement requirements of the detailed mitigation plan shall be provided prior to issuance of construction permits. Plans shall include the proposed construction sequencing and timing;surface and subsurface hydrologic conditions, including proposed hydrologic regimes for compensatory mitigation areas;grading and excavation details, erosion and sediment control measures;a planting plan specifying plant species,quantities, location,size,spacing, density, proper placement,fertilization standards, and provisions for temporary irrigation systems. Section 9. Ordinance 2909-06, as amended, (Zoning Code, Critical Areas), is hereby amended by the addition of the following section,to be codified as EMC 19.37.076 (Critical area reports—Best Available Science Analysis): 19.37.076 Critical Area Reports-Alternative Best Available Science Analysis.The planning director may, using the review process described in EMC Title 15, Local Project Review Procedures, authorize a modification to the standards in this chapter as follows: A. An applicant must submit a critical area study by a qualified professional that documents that the proposed development design/standards will result in a net improvement of the functions of the critical area over that which would be obtained by applying the standard prescriptive measures contained in this chapter.The study must address best available science as it relates to the critical area functions. B. The study must be circulated to appropriate state and federal resource agencies for review and comment opportunity prior to planning director authorization. C. The development design/standards may include, but are not necessarily limited to, measures prescribed in an approved watershed conservation plan or other similar conservation plan that addresses critical areas protection consistent with this section. EMC Title 19.37 (Critical Areas) Page 22