1410 SEINER DR FISHERMAN JACKS 2025-08-21

WATERFRONT PLACE CENTRAL PORT OF EVERETT — PSA 1-2015-005 HYDROLOGIC AND HYDRAULIC REPORT PND No. 154016 — 005.01 8.2. PRE -DEVELOPED HYDROLOGY The pre -developed Fisherman's Harbor Project area is approximately 11.03 acres. Pre -developed conditions of the Fisherman's Harbor site consists of existing paved parking and gravel surfacing over the majority of the site. The majority of the existing site is graded to convey surface water to existing catch basins and which is then conveyed and discharged directly into the Snohomish River basin along Central Marina bulkhead segments A, B and C. The northeast corner of the project site is graded towards 131h street and surface water is conveyed to North Marina Basin. Figure 1 provides a detailed overview of the existing sites surface drainage. Proposed development changes to the project site will render the current stormwater collection and conveyance appurtenances inoperable and they shall be demolished, with the exception of the existing outfalls, as stated in section 2. Figure 1: Pre -Developed Basin Areas 8.3. DEVELOPED HYDROLOGY All surface water generated within the project site will be collected, conveyed, and discharged to the Central Marina Basin. The Fisherman's Harbor District property will be graded away from West Marine View Drive towards the central marina. A detailed drainage sub -basin map is provided in Appendix B. Surface runoff for the northern portion of the project site, sub -basins Al through A25, is to be collected A0Iq