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discharge to Rucker Avenue on the west end of the site and Colby Avenue on the east end <br /> of the site. <br /> CONDITIONS AND REQUIREMENTS <br /> This project is subject to the provisions and requirements of the 2019 Washington State <br /> Department of Ecology Stormwater Management Manual for Western Washington (the <br /> "Manual"). In accordance with Volume 1, Section1-2.4, Minimum Requirements 1 through <br /> 9 apply to this proposal, as this project proposes more than 5000 square feet of new <br /> impervious surface. <br /> MINIMUM REQUIREMENT #1 - OFFSITE ANALYSIS <br /> TASK 1 — MAP AND DEFINE STUDY AREA <br /> See attached off-site basin mapping. <br /> TASK 2 — RESOURCE REVIEW <br /> In accordance with Volume 1, Section 2.5.1, the following resources, if available, were <br /> reviewed for existing/potential problems within one mile downstream of the project site: <br /> • Floodplain/floodway (FEMA) maps — entire study area, including 1 mile <br /> downstream of project site, outside of flood hazard area (FEMA Panel 01200) <br /> Snohomish County Soils Survey — checked and included in appendix <br /> • Wetlands Inventory — no wetland studies found within 1 mile downstream project <br /> wetland study submitted as part of project application <br /> • Migrating river studies — no rivers within downstream study area <br /> • Watershed Studies — Snohomish River Watershed Study, 1998 <br /> • Water Quality 303d listings — Snohomish River listed for pH, temperature, <br /> dissolved oxygen, bacteria, and ammonia <br /> TASK 3 — FIELD INSPECTION <br /> A field inspection of the downstream system was conducted on October 16, 2019, under <br />