Download - City of Burlingame Rain Garden
City of Burlingame Rain Garden
City of Burlingame Rain Garden
AgendaLocationProject History and DesignRain Garden parking lotDrainage storm runoffCurb Extension street runoff Landscaping California nativesConstruction changes in fieldFinancing - grantInterpretive SignLessons Learned
Location Downtown BurlingameProject LocationProject History and DesignExisting parking lot with on-street parking behind shopping district
Public Parking Lot C
Existing ConditionsMultiple drivewaysOriginal landscaping
Poor DrainageStreet runoff collects in gutterParking lot drainage ponds
RAIN GARDENLayout of Redesigned Parking Lot
Rain Garden Photos
STORM DRAINAGE Captures runoff from commercial buildings and parking lot1.32 acres of runoff equals 0.25 cfs for a 30 year eventDesigned for 0.43 cfs almost twice the required C3 guidelinesOverflow to curb for 50 to 100 year storm event
Rain Garden - runoff
Overflow to street
Cross Sections
CURB EXTENSIONCaptures Runoff from Street and Parking Stalls0.11 acres of runoff at 0.285 cfs design for 0.33 cfs exceeding C3 guidelines.Treats overflows from center cell of garden as well
LANDSCAPINGAll plants are California NativesIncludes Rush, Sedges, Carmel Creeper or Ceanothus, Iris, Barberry and BuckwheatTree specified was native Hackberrys - could not find and used Valley OaksIrrigation for first few years only -contractor installed as part of 6 month maintenance periodUse mulch that knits together not bark that floats
Valley Oak Trees
White flowering Ceanothus
Rushes and SedgesLandscape Plan
CONSTRUCTION Demolition of parking lot Relocation of lights Restriping of parking
Construction - continued Excavation Installation of rock Boardwalks Topsoil Landscaping Irrigation
Financing
Interpretive Sign Educating the public Staff designed sign Ordered from the Web
Lesson Learned: Infiltration TestPercolation test did not workInfiltration test didWorks like toilet floatThree tests through out the site
Lesson Learned continuedErosion along edgeGutter debris into curb extension use rock not pea gravel
LESSONS LEARNEDQuestions and CommentsThank you