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al-z <br />IUl-zo(J <br />ILo <br />uJJ <br />m <br />F <br />Table of Contents <br />1. lntroduction <br />1. L Project Purpose.....,. <br />1.2. Report Purpose <br />1.3. Design Codes and References... <br />1.3.1. Department of Ecology... <br />1.3.2. City of Roslyn <br />2 Basin Descrrption............... <br />2.1. General <br />2.2. Historic and Existing Conditions <br />2.3. Proposed Conditions <br />3. Pro.iect Site Description..... ....... . <br />3. 1. Project Limits.........,. <br />3.2. Project Site Conditions.........,.....,.. <br />3.3. Stormwater Features. <br />1 <br />,1 <br />1 <br />1 <br />,| <br />1 <br />c <br />2 <br />2 <br />2 <br />2 <br />3 <br />3 <br />4 <br />4 <br />4 <br />6 <br />6 <br />6 <br />I <br />8 <br />I <br />I <br />4. <br />A <br />6. <br />Core Element Analysis ...... <br />Alternatives Considered .... <br />Design Analysis <br />6.1. Existing Stormwater Drainage System <br />6.2. Proposed BMP Design and lmprovements..... <br />7 Water Quality Benefit...... <br />7. 1. Runoff Treatment Comparison..... <br />7.2. Equivalent NedRedevelopment Areas <br />8. CapilallmprovementPlan <br />EXHIBITS <br />Exhibit 1 - Basin and Study Map <br />APPENDICES <br />Appendix A - Drainage Parameters <br />Appendix B - Existing Flow Rates <br />Appendix C - Swale Calculations <br />Appendix D - Equivalent New Redevelopment Areas for Bioliltration Swales Calculaiions Sheet <br />Appendix E - CIP 1 Cost Estimate <br />Appendix F - Operations and Maintenance Tables