1605 SE EVERETT MALL WAY WALMART 2018-01-01 MF Import

Seattle,Washington 11) www.pacland.com , 2T 06 522 9510 TURNING VISIONS INTO REALITY Table of Contents Section Page I. PROJECT DESCRIPTION 4 PROPOSED IMPROVEMENTS 4 PROJECT LOCATION 4 MINIMUM REQUIREMENTS 5 II. SITE ASSESSMENT 7 TOPOGRAPHY 7 DRAINAGE 8 SOILS 8 GROUND COVER 8 CRITICAL AREAS 8 ADJACENT AREAS 8 III. SITE DEVELOPMENT PLAN W/ON-SITE STORMWATER MANAGEMENT 9 IV. CONSTRUCTION STORMWATER POLLUTION PREVENTION PLAN 12 EROSION CONTROL RISK ASSESSMENT 12 CONSTRUCTION STORMWATER POLLUTION PREVENTION PLAN(C-SWPPP) 12 CONSTRUCTION SEQUENCE AND PROCEDURE 13 V. SOURCE CONTROL PLAN 14 VI. SPECIAL REPORTS AND/OR STUDIES 16 VII. OTHER PERMITS 17 VIII. PERMANENT STORMWATER CONTROL PLAN 17 A. OFF-SITE ANALYSIS 17 B. PRE-REDEVELOPED HYDROLOGY 18 Table 1 —Pre-Redeveloped/Existing Conditions 19 Table 2—Pre-Redeveloped/Existing Flow Rates 19 C. REDEVELOPED HYDROLOGY 19 Table 3—Proposed Conditions 19 Table 4—Proposed Flow Rates.... 20 D. STORMWATER FLOW CONTROL PLAN 20 Table 5—Existing Flow Control Structure Information 21 Table 6—Existing Detention Pipe Information 21 E. STORMWATER TREATMENT PLAN 22 Table 7—Stormwater Treatment Facility Information 23 Table 8—Equivalent Treatment Areas 23 F. CONVEYANCE ANALYSIS 24 G. OPERATION AND MAINTENANCE PLAN 25 APPENDIX A-FIGURES 27 FIGURE 1 —VICINITY MAP 28 FIGURE 2—EXISTING BASIN MAP _ 29 FIGURE 4—PROPOSED CONDITIONS MAP 31 FIGURE 5—GRADING AND DRAINAGE PLAN 32 FIGURE 6—SITE PLAN 33 FIGURE 7—SOURCE CONTROL ACTIVITY WORKSHEET 34 APPENDIX B-CONVEYANCE ANALYSIS CALCULATIONS 37 RATIONAL METHOD CALCULATIONS 38 CATCH BASIN SUB-BASIN TABLE 38 RATIONAL METHOD SUMMATION OF CATCH BASIN SUB-BASINS TABLE 39 MANNING'S FORMULA PIPE FLOW CALCULATION 40 CATCH BASIN SUB-BASIN MAP 41 APPENDIX C—STORMWATER FLOW CONTROL—SUPPLEMENTAL INFORMATION 42 Everett Mall Plaza Parcel Ill Retail Expansion Stormwater Site Plan — Page 2