City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking...
-
Upload
zoey-grubbs -
Category
Documents
-
view
223 -
download
1
Transcript of City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking...
![Page 1: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/1.jpg)
City of Burlingame Rain Garden
![Page 2: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/2.jpg)
Agenda• Location• Project History and Design• Rain Garden – parking lot• Drainage – storm runoff• Curb Extension – street runoff • Landscaping – California natives• Construction – changes in field• Financing - grant• Interpretive Sign• Lessons Learned
![Page 3: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/3.jpg)
Location – Downtown Burlingame
Project Location
![Page 4: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/4.jpg)
Project History and Design• Existing parking lot with on-street parking behind
shopping district
![Page 5: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/5.jpg)
Public Parking Lot C
![Page 6: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/6.jpg)
Existing ConditionsMultiple driveways
Original landscaping
![Page 7: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/7.jpg)
Poor DrainageStreet runoff collects in gutter
Parking lot drainage ponds
![Page 8: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/8.jpg)
RAIN GARDEN
Reconfigure parking lot with two entrances and 90 degree stalls
Capture 16’ x 160’ area for bioswale
Design for 4’ wide channel at 5”-6” deep
California native landscaping
Irrigation for first few years only, by contractor choice
Two boardwalks for pedestrian access to parking lot
![Page 9: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/9.jpg)
Layout of Redesigned Parking Lot
![Page 10: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/10.jpg)
Rain Garden Photos
![Page 11: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/11.jpg)
STORM DRAINAGE • Captures runoff from commercial buildings and parking lot• 1.32 acres of runoff equals 0.25 cfs for a 30 year event• Designed for 0.43 cfs – almost twice the required C3
guidelines• Overflow to curb for 50 to 100 year storm event
![Page 12: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/12.jpg)
Rain Garden - runoff
![Page 13: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/13.jpg)
Overflow to street
![Page 14: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/14.jpg)
Cross Sections
![Page 15: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/15.jpg)
CURB EXTENSION• Captures Runoff from Street and Parking Stalls• 0.11 acres of runoff at 0.285 cfs – design for 0.33 cfs
exceeding C3 guidelines.• Treats overflows from center cell of garden as well
![Page 16: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/16.jpg)
LANDSCAPING• All plants are California Natives• Includes Rush, Sedges, Carmel Creeper
or Ceanothus, Iris, Barberry and Buckwheat
• Tree specified was native Hackberrys - could not find and used Valley Oaks
• Irrigation for first few years only -contractor installed as part of 6 month maintenance period
• Use mulch that knits together not bark that floats Valley Oak Trees
White flowering Ceanothus Rushes and Sedges
![Page 17: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/17.jpg)
Landscape Plan
![Page 18: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/18.jpg)
CONSTRUCTION• Demolition of parking lot
• Relocation of lights
• Restriping of parking
![Page 19: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/19.jpg)
Construction - continued
• Excavation
• Installation of rock
• Boardwalks
• Topsoil
• Landscaping
• Irrigation
![Page 20: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/20.jpg)
Grant from San Mateo County Storm Water Pollution Prevention
Cost – about $270,000 for design, engineering, and construction
Sustainable, Green Streets and Parking Lots program
Vehicle License Fees
Managed thru C/CAG
Financing
![Page 21: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/21.jpg)
Interpretive Sign • Educating the public
• Staff designed sign
• Ordered from the Web
![Page 22: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/22.jpg)
Lesson Learned: Infiltration Test• Percolation test did
not work• Infiltration test did• Works like toilet float• Three tests through
out the site
![Page 23: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/23.jpg)
Lesson Learned continued
Erosion along edge
Gutter debris into curb extension – use rock not pea gravel
![Page 24: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/24.jpg)
LESSONS LEARNED
Infiltration test for soil drainage
Added one foot rock strip to deter erosion
Enlarged rock storage area in swale
Include maintenance period and simple irrigation system
Check on plant availability
Contractor qualifications in specifications important
![Page 25: City of Burlingame Rain Garden. Agenda Location Project History and Design Rain Garden – parking lot Drainage – storm runoff Curb Extension – street runoff.](https://reader031.fdocuments.in/reader031/viewer/2022020921/56649c905503460f94949e0e/html5/thumbnails/25.jpg)
Questions and Comments
Thank you