Water Supply, Energy and GHG Emissions
description
Transcript of Water Supply, Energy and GHG Emissions
![Page 1: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/1.jpg)
A Clear Blue FutureHow Greening our Cities can Address
Water Pollution, Water Supply, and Climate Change in the 21st Century
June 13, 2010
![Page 2: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/2.jpg)
Water Supply, Energy and GHG Emissions
![Page 3: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/3.jpg)
Water Supply Major water supply systems in
California are all over-allocated.
![Page 4: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/4.jpg)
Sources of Water Supply
![Page 5: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/5.jpg)
Courtesy California Climate Change Center
Water Supply Concerns
![Page 6: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/6.jpg)
Energy Intensity of Selected Water Supply Sources in Southern California
0
1000
2000
3000
4000
5000
6000
kWh/
acre
foot
![Page 7: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/7.jpg)
LID
![Page 8: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/8.jpg)
Land-Use in the Chino Basin
Wildermuth Environmental
![Page 9: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/9.jpg)
Impervious Surface in Coastal CA
![Page 10: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/10.jpg)
Stormwater Flows
![Page 11: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/11.jpg)
Stormwater Runoff: Impairment
Ballona Creek, Los Angeles (California Coastal Commission)
Los Angeles River (City of Los Angeles)
![Page 12: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/12.jpg)
Infiltration
City of Los Angeles/Haan-Fawn Chau
City of Los Angeles
![Page 13: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/13.jpg)
Rain Barrels / Cisterns
EPA / Abby Hall
![Page 14: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/14.jpg)
Potential Benefits of LID
![Page 15: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/15.jpg)
• Land Use: Existing percentage of impervious surface and projected development rate for commercial and residential land use.• Infiltration potential based on soil permeability
and availability of site open space.• Annual precipitation.
• Current groundwater use and potential for aquifer recharge or capture and reuse.
Steps in the Analysis
![Page 16: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/16.jpg)
• Land Use: incorporates only commercial and residential development, and not industrial, government, public use, or transportation.
Only new and redevelopment, with limited application to retrofitting. Does not include the existing built environment.
Constraints and Conservative Assumptions• Includes only urbanized southern California
and the San Francisco Bay Area; does not account for the rest of the state.
![Page 17: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/17.jpg)
Land Use - Southern California
![Page 18: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/18.jpg)
USDA Soil ClassificationsA, B, and (with amendments) C Soils are suitable for infiltration
![Page 19: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/19.jpg)
Shallow Groundwater/Contamination
Water Reclamation District of Southern California
Analysis assumes that 50% of Los Angeles County will augment water supplies through capture.
![Page 20: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/20.jpg)
Low Impact DevelopmentPotential Savings in Urbanized Southern California and SF Bay Area by 2020 (increasing each year thereafter):• 109,000 to 191,000+ acre-feet/year
• 273,000 to 583,000 megawatt-hours/year • 119,000 to 255,000 metric tons of CO2
equivalent/year
![Page 21: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/21.jpg)
Low Impact DevelopmentEquivalent to:• Water for more than 1,000,000 people• Electricity for more than 48,000 single family homes per year• More than 46,000 cars off the road annually
Does not take into account opportunity for use statewide or from industrial, government, public use, and transportation development.
![Page 22: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/22.jpg)
Rooftop Capture
Rooftop surface area averages 40-60% of an individual development site.
![Page 23: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/23.jpg)
Rooftop Capture Potential• Study contemplated ~55,000 acre-feet/year attributed to rooftop capture (remainder to infiltration and recharge)
• Potential for approximately 80,000-85,000 acre-feet/year rooftop capture by 2020 within the study area.
Enough water for more than 500,000 people per year
![Page 24: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/24.jpg)
LID is Cost Effective
…
National Association of Home Builders:
![Page 25: Water Supply, Energy and GHG Emissions](https://reader035.fdocuments.us/reader035/viewer/2022062222/5681649c550346895dd67cfb/html5/thumbnails/25.jpg)