The Big Green Sponge

580 views

Published on

Published in: Business, Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
580
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
2
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide
  • Over 100 projects, $10M+ investment, capturing 40 million gallons
  • Demonstration Projects on Public Properties
  • Insert final design
  • The Big Green Sponge

    1. 1. IMPERVIOUS AREA IN CITY OF LANCASTER Roadway Railroad 25% Building 2% 41% Parking Lot 32%
    2. 2. IT’S BEEN FUN, BUT NOW…Figuring out scaleInstitutionalizing -ordinance -sustainable funding
    3. 3. EXAMPLE DEMONSTRATION PROJECT POROUSPAVEMENT PLAY COURT: 6TH WARD PARK
    4. 4. 6TH WARD PARK UNIT COST COMPARISON
    5. 5. PARKING LOTS
    6. 6. PLUM STREET PARKING LOT
    7. 7. PLUM STREET
    8. 8. TOTALParking Lot Drainage GI Area Capture Capital Area Volume Costs with Contingenc yPlum Street 23,402 4,680 511,000 $89,862Dauphin 20,582 4,516 411,000 $61,822Penn 22,758 4,219 455,000 $60,749Mifflin 13,242 1,324 265,000 $27,013TOTAL 1,642,000 $239,446 COST PER GALLON = $0.14/gallon
    9. 9. GREEN STREETS & ALLEYS
    10. 10. ALLEY 148: BEFORE
    11. 11. ALLEY 148: AFTER
    12. 12. HOW MUCH WE NEED TO MANAGE? Assumed Assumed Impervious Total WQv or Average Percent of Runoff Green Infrastructure Project / Area SW BMP Annual Area / Impervious Source Impervious Reduction Program Type Managed Runoff Capture Runoff Area (MG/yr) (acres) (MG/yr) Volume Reduction Managed (in.) Roads / Alleys Green Streets 30% 158.7 513 1.0 86% 132.4 Parks Park Improvements / Greening 85% 17.0 19 1.0 86% 14.2 Sidewalks Disconnection, Porous Pavement 35% 43.3 120 1.0 86% 36.1 Parking Lots Porous Pavement, Bioretention 20% 129.5 628 2.0 97% 121.3 Flat Roofs Vegetated Roofs 15% 32.7 212 1.0 86% 27.3 Sloping Roofs Disconnection/Rain Gardens 25% 163.5 635 1.0 86% 136.5 Street Trees Enhanced Tree Planting N/A 45.1 44 0.3 49% 21.5 Public Schools Green Schools 75% 38.4 50 1.0 86% 32.0Various (Ordinance) First-Flush Ordinance 50% 637.0 1236 1.0 86% 531.6Total 1,265 3,752 1,053 55%
    13. 13. PUT ANOTHER WAY…Area/Impervious Assumed PercentSource of Impervious Area ManagedRoads/Alleys 30% 468 BlocksParks 85% 26 ParksSidewalks 35% 89 MilesParking Lots 20% 287 Parking LotsFlat roofs 15% 246 RoofsSloping Roofs 25% 2,195 BuildingsStreet Trees N/A 56,700 TreesPublic Schools 75% 15 SchoolsVarious (ordinances) 50% 2,536 non-residence parcels
    14. 14. PARCEL VS. IMPERVIOUS AREA Parcels Impervious Area Residential Residential Multi-Family Multi-Family Non-Residential Non-Residential 14% 20% 11% 4% 75% 76%
    15. 15. OUR THANKS…National Fish and Wildlife FoundationKeith Campbell Foundation for the EnvironmentPA Department of Environmental ProtectionPA Department of Conservation and Natural ResourcesLancaster County Planning CommissionChesapeake Bay CommissionPENNVESTAnd many individual donors…

    ×