GSI Manual: Volume V - Operations, Maintenance and Inspection Green Stormwater Infrastructure Manual Volume V: Operations & Maintenance July 2015 GSI Manual: Volume V – Operations & Maintenance This is the fifth volume in a 5-volume series for the GSI Manual. Please consult other volumes for additional information: VOLUME: I Project Initiation / Partnering Framework II SPU’s Options Analysis / WTD’s Problem Definition Phase III Design Phase IV Construction & Commissioning V Operations & Maintenance This document was prepared and compiled by SvR Design Company for Seattle Public Utilities (SPU) and King County Wastewater Treatment Division (WTD) for the GSI Program (SPU Contract C12-004). Additional contributors to this document included representatives from SPU, WTD, and PRR (Section 10 – Public Engagement). This document includes documentation relevant to GSI in the right-of-way from the Washington State Department of Ecology Guidance Document “Western Washington Low Impact Development (LID) Operations and Maintenance” 7/2013; generally these excerpts are in italics. For revisions or comments on this document, contact: Seattle Public Utilities: Tracy Tackett, PE, [email protected] Drena Donofrio, PE, [email protected] KC Wastewater Treatment Division: John Phillips, [email protected] F:\12\12034 SPU GSI PM\Task 2-Tech Analysis&Support\GSI Manual\Vol V - O&M & Inspections\Vol-V_GSI_OM_Manualdraft_Rev8_10_2015.Docx ii Updated July 2015 GSI Manual: Volume V – Operations & Maintenance Vol. V - Operations, Maintenance Table of Contents SECTION 1. Introduction to GSI Operations and Maintenance for Right-of-Way Projects ............................................................................................... 1-1 1.1 Purpose and Regulatory Context ............................................................... 1-1 1.2 GSI – A New Infrastructure ........................................................................ 1-2 1.3 Maintaining within Public View ................................................................... 1-2 1.4 Right-of-Way Context ................................................................................. 1-3 1.5 Coordination with O&M, GIS and Asset Management Staff during Design . 1-3 1.6 Transition from Construction & Commissioning Period ............................... 1-4 1.7 Differentiating Operations, Maintenance and Annual Inspection ................. 1-4 1.8 GSI Construction Period Maintenance ....................................................... 1-4 1.9 GSI Maintenance Guidance Tables ............................................................ 1-5 1.10 Acceptable / Unacceptable Guidance ......................................................... 1-6 SECTION 2. Operations .......................................................................................... 2-1 2.1 Defining Parameters and Resources .......................................................... 2-1 2.2 Contract Coordination for Commissioning .................................................. 2-2 2.3 Contract Coordination for Construction Phase Establishment of Plantings . 2-3 2.4 Performance Standard ............................................................................... 2-3 2.5 GIS Based Asset Tracking for GSI Facilities .............................................. 2-4 2.6 Regulatory Reporting; Agency Reporting and Updates .............................. 2-4 2.7 Staffing ....................................................................................................... 2-4 2.8 Training ...................................................................................................... 2-5 2.9 Equipment .................................................................................................. 2-6 2.10 Materials .................................................................................................... 2-6 2.11 Pavement Surfacing Materials for Repair/Replacement ............................. 2-7 2.12 Plant Replacement Materials...................................................................... 2-7 2.13 Other Materials Required during Plant Replacement .................................. 2-9 2.14 GSI Facility Component Corrective Actions .............................................. 2-10 2.15 Removal of Voluntary GSI Facilities ......................................................... 2-11 2.16 Coordination with Other Right-of-Way Uses, Policies and Programs ........ 2-11 2.17 Emergency Management: Response ....................................................... 2-12 2.18 Update Risk Management ........................................................................ 2-12 2.19 Feedback Loop to Update GSI Manual .................................................... 2-13 2.20 Public Information .................................................................................... 2-13 SECTION 3. Maintenance of Bioretention Surface Facilities............................... 3-1 3.1 Overview .................................................................................................... 3-1 3.2 Establishment Period ................................................................................. 3-1 3.3 Maintenance for Established Facilities ....................................................... 3-2 3.4 Maintenance for Specific Components within Facility ................................. 3-2 3.5 Future ........................................................................................................ 3-3 SECTION 4. Maintenance of Structures and Subsurface Storm Drainage ......... 4-1 4.1 Overview .................................................................................................... 4-1 SECTION 5. Maintenance of Deep Infiltration Infrastructure Placeholder ......... 5-1 5.1 Overview .................................................................................................... 5-1 5.2 Underground Injection Control Wells for Stormwater .................................. 5-1 iii Updated July 2015 GSI Manual: Volume V – Operations & Maintenance 5.3 Screen Wells .............................................................................................. 5-2 5.4 Drilled Drains ............................................................................................. 5-2 5.5 Pit Drains ................................................................................................... 5-3 SECTION 6. Maintenance of Permeable Pavements ............................................ 6-1 6.1 Overview .................................................................................................... 6-1 6.2 Components of Permeable Pavement System ........................................... 6-1 6.3 Sidewalks ................................................................................................... 6-1 6.4 Pervious Concrete Neighborhood Streets/Alleys ........................................ 6-2 6.5 Future ........................................................................................................ 6-2 SECTION 7. Outsourced and Stewardship Maintenance ..................................... 7-1 7.1 Overview .................................................................................................... 7-1 7.2 Outsourced and/or Work Order Contracts .................................................. 7-1 7.3 Stewardship ............................................................................................... 7-1 SECTION 8. Storm Events, Extreme Weather or Emergency Maintenance ....... 8-1 8.1 Storm Events ............................................................................................. 8-1 8.2 Extreme Weather ....................................................................................... 8-1 8.3 Spills .......................................................................................................... 8-2 8.4 Vandalism .................................................................................................. 8-2 8.5 Vehicular Damage ...................................................................................... 8-2 SECTION 9. Inspection ........................................................................................... 9-1 9.1 Overview .................................................................................................... 9-1 9.2 Regulatory .................................................................................................. 9-1 9.3 Record Keeping ......................................................................................... 9-1 9.4 Asset Management .................................................................................... 9-1 9.5 Complaint-Based ........................................................................................ 9-1 9.6 Role of Inspector ........................................................................................ 9-2 SECTION 10. Public Engagement .......................................................................... 10-1 10.1 Purpose and Objective ............................................................................. 10-1 10.2 Outreach Tools ........................................................................................ 10-2 10.3 Work Plan ................................................................................................ 10-3 10.4 Training and Handoff ................................................................................ 10-3 10.5 Reporting ................................................................................................