Environmental Best Management Practices

The 2020 Environmental Best Management Practices and Design Standards Manual was written in cooperation with multiple city departments to provide clear direction on standard operational procedures; to effectively communicate Parks & Community Services Department operational practices to the public; and to respond to regional, state and federal environmental issues. Proper care and maintenance, as well as the understanding of certain practices and systems, is essential in perpetuating the longevity and usefulness of city assets.

In order to continue to improve the standard of care and our maintenance practices, this manual is reviewed and revised every four years. Any changes, modifications or comments regarding these best management practices should be directed to Rick Bailey - ribailey@bellevuewa.gov or 425-452-6031.

The city has also developed Tree Pruning Guidelines ( PDF, Flipbook ) to inform property owners about appropriate tree maintenance practices that are allowed in geological hazard critical areas.

The Parks & Community Services Department’s mission is to contribute to a healthy community through an integrated system of exceptional parks, open space, recreational, cultural and human services. This mission is based on the Parks and Community Services Department’s philosophy to:

  • Protect and preserve environmentally sensitive natural areas;
  • Provide connections for an integrated open space system;
  • Enhance the City’s visual character throughout the park system by perpetuating the “City in a Park” ideal;
  • Acquire and develop park facilities to meet the present and future needs of the community; and to renovate or modify parks for optimum use of resources.

The following are lists of updated and current park and street tree/arterial landscape design standards available for individual download in PDF format. Please contact Rick Bailey at ribailey@bellevuewa.gov or 425-452-6031 if you would like to obtain an associated CAD file.

  • PK-IR-01A - Typical Point of Connection Schematic with Master Valve Outside of Vault 
  • PK-IR-01B - Typical Point of Connection Schematic with Master Valve Inside of Vault 
  • PK-IR-01C - Typical Point of Connection Schematic with Quick Coupler Line 
  • PK-IR-01D - Typical Point of Connection Schematic for D.C.V.A. in Valve Box 
  • PK-IR-02A – Irrigation – Double Check Valve Assembly in Valve Box

  • PK-IR-02B – Irrigation – Double Check Valve Assembly in Vault

  • PK-IR-02C – Irrigation – Double Check Valve Assembly in Vault with Automatic Control Master Valve

  • PK-IR-02D – Irrigation – Double Check Valve Assembly in Vault with Pressure Reducing Valve

  • PK-IR-02E – Irrigation – Double Check Valve Assembly in Vault with Pressure Reducing Valve and Automatic Control Master Valve

  • PK-IR-03 – Irrigation – Pressure Reducing Valve Assembly
  • PK-IR-04 – Irrigation – Automatic Control Master Valve Assembly
  • PK-IR-05 – Irrigation – Flow Sensor Assembly
  • PK-IR-06 – Irrigation – Combined Automatic Control Master Valve & Flow Sensor Assembly
  • PK-IR-07A – Irrigation – Isolation Valve Assembly – Curb Stop Valve

  • PK-IR-07B – Irrigation – Isolation Valve Assembly – Gate Valve

  • PK-IR-07C – Irrigation – Isolation Valve Assembly – Ball Valve

  • PK-IR-08A – Irrigation – Automatic Control Valve Assembly – Standard

  • PK-IR-08B – Irrigation – Automatic Control Valve Assembly – Drip

  • PK-IR-08C – Irrigation – Automatic Control Valve Assembly – Gasketed Mainline

  • PK-IR-08D – Irrigation – Automatic Control Valve Assembly – Standard in Vault

  • PK-IR-08E – Irrigation – Automatic Control Valve Assembly – Standard with DC Latching Solenoid

  • PK-IR-08F – Irrigation – Automatic Control Valve Assembly – Drip with DC Latching Solenoid

  • PK-IR-09A – Irrigation – Head and Swing Arm Assembly – Rotary – Section

  • PK-IR-09B – Irrigation – Head and Swing Arm Assembly – Rotary - Plan

  • PK-IR-10A – Irrigation – Head and Swing Arm Assembly – Spray – Rigid – Section

  • PK-IR-10B – Irrigation – Head and Swing Arm Assembly – Spray – Rigid – Plan

  • PK-IR-10C – Irrigation – Head and Swing Arm Assembly – Spray – Flex Tubing – Section

  • PK-IR-10D – Irrigation – Head and Swing Arm Assembly – Spray – Flex Tubing - Plan

  • PK-IR-10E – Irrigation – Head and Swing Arm Assembly – Spray – Flex Tubing – At ACP Supported Curb – Section

  • PK-IR-10F – Irrigation – Head and Swing Arm Assembly – Spray – Flex Tubing – At ACP Supported Curb - Plan

  • PK-IR-10A – Irrigation – Head and Swing Arm Assembly – Spray – Rigid – Section

  • PK-IR-10B – Irrigation – Head and Swing Arm Assembly – Spray – Rigid – Plan

  • PK-IR-10C – Irrigation – Head and Swing Arm Assembly – Spray – Flex Tubing – Section

  • PK-IR-10D – Irrigation – Head and Swing Arm Assembly – Spray – Flex Tubing - Plan

  • PK-IR-10E – Irrigation – Head and Swing Arm Assembly – Spray – Flex Tubing – At ACP Supported Curb – Section

  • PK-IR-10F – Irrigation – Head and Swing Arm Assembly – Spray – Flex Tubing – At ACP Supported Curb - Plan

  • PK-IR-11A – Irrigation – Quick Coupler Valve Assembly - Standard

  • PK-IR-11B – Irrigation – Quick Coupler Valve Assembly – Pitching Mound

  • PK-IR-12A – Irrigation – Drip – Techline – Center Feed Layout

  • PK-IR-12B – Irrigation – Drip – Techline – End Feed Layout

  • PK-IR-12C – Irrigation – Drip – Techline – Irregular Area Layout

  • PK-IR-12D – Irrigation – Drip – Techline - Section

  • PK-IR-12E – Irrigation – Drip – Techline – Manual Flush Valve

  • PK-IR-12F – Irrigation – Drip – Operation Indicator
  • PK-IR-13A – Irritation – Typical
  • PK-IR-13B – Irrigation – Typical Trench Section under Pressure
  • PK-IR-14A – Irrigation – Control Panel – Single Controller – Land Line Connection

  • PK-IR-14B – Irrigation – Control Panel – ESP LXMEF Controller – Cellular Connection

  • PK-IR-14C – Irrigation – Control Panel – Single Controller – With Cluster Control Unit

  • PK-IR-14D – Irrigation – Control Panel – Two Controllers – With Cluster Control Units

  • PK-IR-14E – Irrigation – Control Panel – Single Controller l- For Two Wire Conductor Cable – Cellular Connection

  • PK-IR-14F – Irrigation – Control Panel – ESP Site Controller – Cellular Connection

  • PK-IR-15A – Irrigation – Wall Mount Control Enclosure – Single Controller

  • PK-IR-15B – Irrigation – Wall Mount Control Enclosure – Single Controller with Cluster Control Unit

  • PK-IR-15C – Irrigation – Wall Mount Control Enclosure – Two Controllers with Cluster Control Unit

  • PK-IR-16A – Irrigation – Control Pedestal – Single Sided

  • PK-IR-16B – Irrigation – Control Pedestal – Single Sided with Power Service Pedestal

  • PK-IR-16C – Irrigation – Control Pedestal – Two Sided

  • PK-IR-16D – Irrigation – Control Pedestal – Typical Grounding Rod Layout

  • PK-IR-17 – Irrigation – Reference Materials

  • PK-IR-18 – Irrigation – Frost-Proof Yard Hydrant

  • PK-IM-01A - Site Protection - Tree Protection During Construction 
  • PK-IM-01B - Site Protection - Tree Critical Root Zone Under Hard Surface Pathway 
  • PK-IM-01C - Site Protection - Tree Critical Root Zone Under Hard Surface Pathway
  • PK-IM-01D - Site Protection - Reference Material
  • PK-IM-02A – Planting – Shrub

  • PK-IM-02B – Planting – Shrub on Slope

  • PK-IM-03A – Planting – Tree

  • PK-IM-03B – Planting – Tree on Slope

  • PK-IM-03C – Planting – Conifer Seedling

  • PK-IM-04 – Planting – Groundcover

  • PK-IM-05A – Planting – Turf

  • PK-IM-05B – Planting – Turf with Reinforcement Grid

  • PK-IM-06A – Planting – Streetscape Medians – Planter Strip Grading

  • PK-IM-06B – Planting – Streetscape Medians – Type 1 Soil Preparation

  • PK-IM-06C – Planting – Streetscape Medians – Type 2 Soil Preparation

  • PK-IM-07A – Planting – Tree Protection in R.O.W.

  • PK-IM-07B – Planting – R.O.W. Tree

  • PK-IM-07C – Flexible Porous Surfacing at Tree Planter

  • PK-IM-07D – Planting – R.O.W. Tree in Continuous Trench with Pervious Surfacing

  • PK-IM-07E – Planting – R.O.W. Tree with Structural Soil Section

  • PK-IM-07F – Planting – R.O.W. Tree with Soil Cells Plan

  • PK-IM-07G – Planting – R.O.W. Tree with Soil Cells Section 
  • PK-Im-07H – Drip Irrigation at Tree Soil Cells
  • PK-IM-07I – Irrigation at Tree Soil Cells with Tree Planters and Planter Strips – Plans

  • PK-IM-07J – Tree Soil Cells for Bioretention – Plan and Section A

  • PK-IM-07K – Tree Soil Cells for Bioretention – Section B
  • PK-IM-07M – Walled Bioretention Planter – Plan
  • PK-IM-07N – Walled Bioretention Planter – Section
  • PK-IM-07O – Planting – Bioretention Swale in R.O.W.
  • PK-IM-07P – Tree Stock Observation – Roots
  • PK-IM-07Q – Tree Stock Observation – Crown
  • PK-IM-07R – Planted Median
  • PK-IM-08A – Drainage – Typical Intercept (French) Drain
  • PK-IM-08B – Drainage – Subsurface Drain for General Turf Area
  • PK-IM-08C – Drainage – Subsurface Drain for Natural Sport Field Turf Area
  • PK-IM-08D – Drainage – Concrete Catch Basic with Metal Grate
  • PK-IM-08E – Drainage – Typical Cleanout
  • PK-IM-09A – Retaining Wall – Poured-in-Place Concrete
  • PK-IM-09B – Retaining Wall – Manufactured Block
  • PK-IM-09C – Retaining Wall – Rockery
  • PK-IM-10 – Site Improvements – Reference Material