2016 PUBLIC WORKS STANDARDS October 27Novermber 9 , 2016 Public Works Department City of Sammamish 801 228th Ave SE Sammamish, WA 98075 Page intentionally left blank. CONTENTS FOREWORD........................................................................................................ viiivii DIVISION 1 – ADMINISTRATION ............................................................................. 1 Chapter 1. Introduction ................................ ................................ ............................ 3 1.1. General Authority ...................................................................................................................... 3 1.2. Vesting ...................................................................................................................................... 54 1.3. Copy of the PWS..................................................................................................................... 54 1.4. Contact Information ................................................................................................................. 54 Chapter 2. Permits ................................ ................................ ................................ 97 2.1. Public Utilities ........................................................................................................................... 97 2.2. Other Agencies ........................................................................................................................ 97 Chapter 3. Permit Process ................................ ................................ ................. 13 11 3.1. Permit Issuance ................................................................................................................... 1311 3.2. Pre-construction Meeting ................................................................................................... 1311 3.3. Permit Inspections ............................................................................................................... 1311 3.4. Final Project Approval ......................................................................................................... 1412 3.5. Permit Timing and Expiration ............................................................................................. 1412 3.6. Right-of-Way Use Notification ............................................................................................ 1513 3.7. Franchises, Electric and Communication Facilities ......................................................... 1513 Chapter 4. Permit Submittals ................................ ................................ ............. 17 15 4.1. Design Professionals .......................................................................................................... 1715 4.2. Plans and Specifications .................................................................................................... 1816 4.3. Survey .................................................................................................................................. 1917 4.4. Surface Water Report ......................................................................................................... 1917 4.5. Geotechnical Report ........................................................................................................... 2018 4.6. Traffic Impact Analysis (TIA) .............................................................................................. 2118 4.7. Traffic Control Plan ............................................................................................................. 2119 4. 8. Declaration of Covenant ..................................................................................................... 2119 4.9. Easements ........................................................................................................................... 2119 4.10. Tracts .................................................................................................................................... 2220 Public Works Standards i 4.11. Dedication ............................................................................................................................ 2220 4.12. Dewatering Plan .................................................................................................................. 2321 4.13. Maintenance Plan ............................................................................................................... 2321 4.14. Financial Guarantee ........................................................................................................... 2321 4.15. Insurance ............................................................................................................................. 2421 Chapter 5. Permit Fees ................................ ................................ ..................... 25 23 DIVISION 2 – RIGHT-OF-WAY ............................................................................ 2725 Chapter 6. Standards ................................ ................................ ........................ 29 27 6.1. Companion Documents ..................................................................................................... 2927 6.2. Deviation from Engineering Standards ............................................................................. 3129 Chapter 7. General Requirements ................................ ................................ ...... 33 31 7.1. Americans with Disabilities Act .......................................................................................... 3331 7.2. Low Impact Development .................................................................................................. 3331 7.3. Maintenance ........................................................................................................................ 3331 7.4. Tree Removal/Pruning ....................................................................................................... 3331 7.5. Connectivity ......................................................................................................................... 3432 7.6. Connectivity to Substandard Roadways .......................................................................... 3432 7.7. Underground Utilities .......................................................................................................... 3533 7. 8. Frontage Improvements ..................................................................................................... 3634 7.9. Dedication of Right-of-Way ................................................................................................ 3836 7.10. Illumination ........................................................................................................................... 3836 7.11. Curbing ................................................................................................................................. 4038 7.12. Traffic Calming Devices...................................................................................................... 4038 7.13. Pavement Cut Moratorium ................................................................................................. 4139 Chapter 8. Traffic Impact Analysis ................................ ................................ ...... 43 41 Chapter 9. Street Classification ................................ ................................ .......... 45 43 9.1. Arterial Streets ..................................................................................................................... 4543 9.2. Non-Arterial Streets............................................................................................................. 4745 9.3. Alley ...................................................................................................................................... 4947 9.4. Woonerf ................................................................................................................................ 5048 9.5. Private Street ....................................................................................................................... 5048 Chapter 10. Access Management ................................ ................................ ........ 52 50 10.1. General ................................................................................................................................. 5250 Public Works Standards ii 10.2. Access Requirements ........................................................................................................ 5452 Chapter 11. Access Design ................................ ................................ ................. 56 54 11.1. General ................................................................................................................................. 5654 11.2. Access Width ....................................................................................................................... 5654 11.3. Access Clearance ............................................................................................................... 5755 11.4. Access Approach ................................................................................................................ 5755 11.5. Driveway .............................................................................................................................. 5856 11.6. Parking Lot Throat Lengths ...............................................................................................