Environmental Best Management Practices

The 2024 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 build a healthy community through an integrated system of exceptional parks, natural areas, recreation, arts and culture and a broad base of community 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.

Signs

PK-SI-01A – Sign – Park Entry – Large – Installation
PK-SI-02A – Sign – Park Entry – Small – Installation
PK-SI-03 – Sign – Park Entry – Approved Symbols
PK-SI-04 – Sign – Wayfinding Hatchet
PK-SI-05A – Sign – Wayfinding Hatchet with Trail Directional Signs – Hatchet Detail
PK-SI-05B – Sign – Wayfinding Hatchet with Trail Directional Signs – Sign Detail
PK-SI-06 – Sign Informational – 12”x18”
PK-SI-07 – Sign – Informational – 18”x24”
PK-SI-08 – Sign – Informational – 24”x24”
PK-SI-09 – Sign – Informational – 6.5”x10” – for Bollards
PK-SI-10 – Sign – Informational – 6.5”x15” – for Bollards
PK-SI-11 – Sign – Informational – Typical Installation
PK-SI-12 – Sign – Informational – Typical Installation - Bollard
PK-SI-13A – Sign – Directional Bollard
PK-SI-13B – Sign – Directional Bollard – Lake to Lake Trail
PK-SI-13C – Sign – Directional Bollard – Mountains to Sound Greenway Trail
PK-SI-13D – Sign - Directional Bollard – with Emergency Locator
PK-SI-14A – Sign – Directional Bollard – Removable
PK-SI-14B – Sign – Directional Bollard – Removable – Slide through Bracket Detail
PK-SI-14C – Sign – Directional Bollard – Removable – Anchor Detail
PK-SI-15 – Sign – Mutt Mitt Dispenser – Parks
PK-SI-16 – Sign – Mutt Mitt Dispenser – Trails
PK-SI-17 – Sign – Interpretive
PK-SI-18A – Sign – 1 or 2-sided Kiosk – Front Elevation
PK-SI-18B – Sign – 1 or 2-sided Kiosk – Side Elevation
PK-SI-18C – Sign – 1 or 2-sided Kiosk- Roof Layout and Display Case Section
PK-SI-19A – Sign – 3-sided Kiosk – Front Elevation
PK-SI-19B – Sign – 3-sided Kiosk – Rear Elevation
PK-SI-19C – Sign – 3-sided Kiosk – Roof Layout and Bracing Details
PK-SI-19D – Sign – 3-sided Kiosk – Display Case Plan
PK-SI-19E – Sign – 3-sided Kiosk – Post Detail
PK-SI-20 – Sign – Open Space Boundary Marker – Identification Decal
PK-SI-21 – Sign – Open Space Boundary Marker – Carsonite Post
PK-SI-22A – Sign – Open Space Boundary Marker – Pog Post Installation
PK-SI-22B – Sign – Open Space Boundary Marker – Pog Post Fabrication
PK-SI-23 – Sign – Parking Lot – A.D.A. Parking Stall
PK-SI-24 – Sign – Parking Lot – Typical Installation
PK-SI-25 – Sign – A Frame – Sport Field Reserved/Closed
PK-SI-26 – Sign – A Frame – Sidewalk or Parking Lot Display

Fencing

PK-FE-01A – Fence – Post and (2) Rail
PK-FE-01B – Fence – Post and (2) Rail with Fabric
PK-FE-02A – Fence – Post and (3) Rail
PK-FE-02B – Fence – Post and (3) Rail with Fabric
PK- FE-03A – Fence – Chain Link
PK-FE-03B – Fence – Chain Link – with Privacy Slats
PK-FE-03C – Fence – Chain Link – Single Swing Gate
PK-FE-03D – Fence – Chain Link – Double Swing Gate
PK-FE-04A – Fence – Board with Fabric – Standard
PK-FE-04B – Fence – Board with Fabric – Standard with Hog Wire to Grade Option
PK-FE-04C – Fence – Board with Fabric – Picture Frame Option
PK-FE-05A – Fence – Wooden Bull Rail – Elevation
PK-FE-05B – Fence – Wooden Bull Rail – Section
PK-FE-06 – Fence – Wooden Privacy
PK-FE-07A – Fence – Ball Control – Baseball/Softball
PK-FE-07B – Fence – Ball Control – Baseball/Softball – J Style Backstop – Section
PK-FE-07C – Fence – Ball Control – Baseball/Softball – J Style Backstop – Section at Backboard
PK-FE-07D – Fence – Ball Control – Baseball/Softball – J Style Backstop – Overall Elevation – Large
PK-FE-07E – Fence – Ball Control – Baseball/Softball – J Style Backstop – Overall Elevation - Small
PK-FE-07F – Fence – Ball Control – Baseball/Softball – Wing and Dugout Elevation – Large
PK-FE-07G – Fence – Ball Control – Baseball/Softball – Wing and Dugout Elevation - Small
PK-FE-07H – Fence – Ball Control – Baseball/Softball – Overall Layout – Large
PK-FE-07I – Fence – Ball Control – Baseball/Softball – Overall Layout – Small
PK-FE-07J – Fence – Ball Control – Baseball/Softball – Backstop Backboard Rear Elevation
PK-FE-07K – Fence – Ball Control – Baseball/Softball – Backstop Backboard Section
PK-FE-07L – Fence – Ball Control – Baseball/Softball – Backstop Backboard Angle Iron Connection
PK-FE-07M – Fence – Ball Control – Baseball/Softball – Concrete Curb/Mow Strips
PK-FE-07N – Fence – Ball Control – Baseball/Softball – Bottom Board Connections
PK-FE-07O – Fence – Ball Control – Baseball/Softball – Dugout – Section
PK-FE-07P – Fence – Ball Control – Baseball/Softball – Dugout – Plan
PK-FE-08A – Fence – Ball Control – Soccer Backstop
PK-FE-08B – Fence – Ball Control – Soccer Backstop – Overall Elevation

Site Furnishings

PK-SF-01A – Bollard – Wood – Removable
PK-SF-01B – Bollard – Wood – Removable – Slide-Through Bracket
PK-SF-01C – Bollard – Wood – Removable – Anchor
PK-SF-02 – Bollard – Wood – Fixed
PK-SF-03 – Bollard – Steel – Fixed
PK-SF-04 – Drinking Fountain Installation
PK-SF-05A – Dugout Cover – Plan
PK-SF-05B – Dugout Cover – Section
PK-SF-06 – 12’x16’ Storage Building
PK-SF-07 – Garbage/Recycle Receptacle Installation
PK-SF-08A – Produce Stand – Fixed – Front Elevation
PK-SF-08B – Produce Stand – Fixed – Side Elevation & Section
PK-SF-09A – Produce Stand – Movable – Front Elevation
PK-SF-09B – Produce Stand – Movable – Side Elevation & Section

Hard Surfaces

PK-HS-01 – Typical Asphalt Pavement Section
PK-HS-02 – Parking Lot – A.D.A. Reserved Stall
PK-HS-03 – Parking Lot – A.D.A. Reserved Parking Symbol
PK-HS-04 – Parking Lot – Typical Concrete Wheel Stop Installation
PK-HS-05 – Concrete – Typical Slab on Grade
PK-HS-06 – Concrete – Typical Stairs
PK-HS-07 – Concrete – Steel Handrail for Stairs
PK-HS-08 – Hard Surface Reference Material

Irrigation

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 LXME2 Pro 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

Site Improvements

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

Trails

PK-TR-01 – Trail – Dimension and Material Options
PK-TR-02 – Trail – Mulch
PK-TR-03 – Trail – Gravel
PK-TR-04 – Trail – Asphalt
PK-TR-05A – Trail – On Slope
PK-TR-05B – Trail – On Slope with Retaining Poles
PK-TR-06A – Trail – Timber Stairs
PK-TR-06B – Trail – Timber Stairs – Landing
PK-TR-06C – Trail – Timber Stairs – Railing
PK-TR-06D – Trail – Timber Stairs – with Cheek Wall
PK-TR-06E – Trail – Timber Stairs – Railing with Cheek Wall
PK-TR-07 – Trail – Timber Retaining Wall
PK-TR-08A – Trail – Footbridge/Boardwalk – with Sleeper Footings – Section
PK-TR-08B – Trail – Footbridge/Boardwalk – with Sleeper Footings – Elevation
PK-TR-08C – Trail – Footbridge/Boardwalk – with Sleeper Footings – Plan
PK-TR-08D – Trail – Footbridge/Boardwalk – with Sleeper Footings – Alternative Safety Rail Cap
PK-TR-09A – Trail – Footbridge/Boardwalk – with Pin Pile Footings – Safety Rail Option – Section
PK-TR-09B – Trail – Footbridge/Boardwalk – with Pin Pile Footings – Safety Rail Option – Elevation
PK-TR-09C – Trail – Footbridge/Boardwalk – with Pin Pile Footings – Safety Rail Option – Framing Plan
PK-TR-09D – Trail – Footbridge/Boardwalk – with Pin Pile Footings – Safety Rail Option – Pin Pile to Boardwalk Connection
PK-TR-09E – Trail – Footbridge/Boardwalk – with Pin Pile Footings – Safety Rail Option – Connector Details
PK-TR-09F – Trail – Footbridge/Boardwalk – with Pin Pile Footings – Safety Rail Option – Post to Beam Connection
PK-TR-09G – Trail – Footbridge/Boardwalk – with Pin Pile Footings – Safety Rail Option – Decking Plan
PK-TR-09H – Trail – Footbridge/Boardwalk – with Pin Pile Footings – Safety Rail Option – Alternative Rail Cap
PK-TR-10A – Trail – Footbridge/Boardwalk – with Pin Pile Footings – Kick Rail Option – Section
PK-TR-10B – Trail – Footbridge/Boardwalk – with Pin Pile Footings – Kick Rail Option – Elevation
PK-TR-10C - Trail – Footbridge/Boardwalk – with Pin Pile Footings – Kick Rail Option – Framing Plan
PK-TR-10D - Trail – Footbridge/Boardwalk – with Pin Pile Footings – Kick Rail Option – Pin Pile to Boardwalk Connection
PK-TR-10E - Trail – Footbridge/Boardwalk – with Pin Pile Footings – Kick Rail Option – Connector Detail
PK-TR-10F - Trail – Footbridge/Boardwalk – with Pin Pile Footings – Kick Rail Option – Post to Beam Connection
PK-TR-10G - Trail – Footbridge/Boardwalk – with Pin Pile Footings – Kick Rail Option – Decking Plan
PK-TR-11A – Trail – Bridge – Section
PK-TR-11B – Trail – Bridge – Elevation
PK-TR-11C – Trail – Bridge – Plan
PK-TR-12 – Trail – Bollard– Wood - Fixed
PK-TR-13A – Trail – Bollard – Wood – Removable
PK-TR-13B – Trail – Bollard – Wood – Removable – Slide through Bracket Detail
PK-TR-13C – Trail – Bollard – Wood – Removable – Anchor Detail
PK-TR-14 - Trail - On Bog Soils
PK-TR-15A - Trail - Bench - Greenway
PK-TR-15B - Trail - Bench - Arbor

Sport Fields

PK-SP-01 – Skinned Baseball – 60’ Base Dimensions
PK-SP-02 – Skinned Baseball – 90’ Base Dimensions
PK-SP-03 – Skinned Softball – 60’ Base Dimensions
PK-SP-04 – Standard Base & Anchor Installation
PK-SP-05 – Safety Slide Base & Anchor Installation
PK-SP-06 – Batters & Catchers Box Fortification
PK-SP-07A – Synthetic Cricket Pitch – Typical Layout
PK-SP-07B – Synthetic Cricket Pitch – Section – with Gravel Base
PK-SP-07C – Synthetic Cricket Pitch – Section – with Concrete Base

Coal Creek Natural Area

PK-CC-01A – Coal Creek Natural Area – Sign – Park Entry – Large – Installation
PK-CC-02 – Coal Creek Natural Area – Sign – Wayfinding Hatchet
PK-CC-03 – Coal Creek Natural Area – Sign – Directional Bollard
PK-CC-04A – Coal Creek Natural Area – Sign – Directional Bollard – Removable
PK-CC-04B – Coal Creek Natural Area – Sign – Directional Bollard – Removeable – Slide through Bracket Detail
PK-CC-04C – Coal Creek Natural Area – Sign – Directional Bollard – Removeable – Anchor Details
PK-CC-05A – Coal Creek Natural Area – Sign – 1 or 2-Sided Kiosk – Front Elevation
PK-CC-05B - Coal Creek Natural Area – Sign – 1 or 2-Sided Kiosk – Side Elevation
PK-CC-05C - Coal Creek Natural Area – Sign – 1 or 2-Sided Kiosk – Roof Layout
PK-CC-05D - Coal Creek Natural Area – Sign – 1 or 2-Sided Kiosk – Display Case Section
PK-CC-05E - Coal Creek Natural Area – Sign – 1 or 2-Sided Kiosk – Post/Beam/Plate Connection
PK-CC-06 - Coal Creek Natural Area – Sign – Interpretive
PK-CC-07A – Coal Creek Natural Area – Trail – Timber Stairs
PK-CC-07B – Coal Creek Natural Area – Trail – Timber Stairs - Landing
PK-CC-08A – Coal Creek Natural Area – Trail – Timber Stairs – Railing – Section
PK-CC-08B - Coal Creek Natural Area – Trail – Timber Stairs – Railing – Inside Elevation
PK-CC-08C - Coal Creek Natural Area – Trail – Timber Stairs – Railing – Outside Elevation
PK-CC-08D - Coal Creek Natural Area – Trail – Timber Stairs – Railing – Connection at Stairs
PK-CC-08E - Coal Creek Natural Area – Trail – Timber Stairs – Railing – Connection at Top of Stairs
PK-CC-08F - Coal Creek Natural Area – Trail – Timber Stairs – Railing – Connection at Landing
PK-CC-08G - Coal Creek Natural Area – Trail – Timber Stairs – Railing – Connection at Bottom of Stairs
PK-CC-09A - Coal Creek Natural Area – Trail – Timber Stairs – Footbridge/Boardwalk – Elevation
PK-CC-09C - Coal Creek Natural Area – Trail – Timber Stairs – Footbridge/Boardwalk - Plan
PK-CC-10A – Coal Creek Natural Area – Trail – Bridge – Section
PK-CC-10B - Coal Creek Natural Area – Trail – Bridge – Elevation
PK-CC-10C - Coal Creek Natural Area – Trail – Bridge – Plan
PK-CC-11 - Coal Creek Natural Area – Trail – Bollard – Wood – Fixed
PK-CC-12 - Coal Creek Natural Area – Trail – Bollard – Wood – Removable