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Panoramic Hill Emergency Egress Route

Panoramic Hill Emergency Egress Route

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Panoramic Hill Emergency Egress Route

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  1. Panoramic Hill Emergency Egress Route Sara Gale, MPH Colleen Reid, MPH May 8, 2007 CP255: Urban Applications of Geographic Information Systems

  2. Problem Panoramic Hill has many hazards • Hayward fault • Wildfires • Landslides • Narrow roads with hairpin turns • Steep terrain Problems of Egress and Access

  3. Data Inputs Data layer list: Source: Digital orthographic photos Oakland 2002 Imagery Miers Project, USGS Seamless site 2004, City of Berkeley Planning Department 2004? Berkeley roads AEGIS, UC Berkeley Oakland roads Miers Project, 2002 Elevation points Hypso—USGS 1:24,000 orthoquads, C-spots 1995 Fire project by John Radke Liquefaction hazard zones California Geologic Survey, Seismic Hazards Zone Report 080 www.conservation.ca.gov/cgs Landslide hazard zones California Geologic Survey, Seismic Hazards Zone Report 080 www.conservation.ca.gov/cgs Berkeley parcels 1999 AEGIS lab study Oakland parcels Miers Project, 2002 Parcel ownership data Effie Yee, Old Republic Title Company via John and Judith Radcliff and Jerry Wachtel EB Regional Parks boundary Meg Peterson East Bay Regional Park District Planning, Stewardship and GIS Services Streams Based on hypsography lines from USGS 1:24,000 orthoquads Fault lines and other Earthquake data USGS

  4. Map of Past Fires

  5. Potential Landslide Zones

  6. Slope

  7. Landslides and Slope

  8. Strategic Approach: Suitability Analysis • Weight each hazard (e.g. steep slope value) • Overlay each layer and union all data into one layer • Sum the hazard weights to get a total hazard score

  9. Slope (degrees) 46-90 = 3 31-45 = 2 16-30 = 1 0-15 = 0 Fault Line (distance to fault) <100 feet = 3 101-200 feet = 2 201-300 feet = 1 >300 feet = 0 Landslide In landslide zone = 2 Otherwise = 0 Stream Within 10 ft on either side of stream = 1 Otherwise = 0 Fire Property Ownership Values for Suitability Analysis

  10. Suitability Map

  11. Possible Walking Routes

  12. Possible Road Routes

  13. Conclusions • There should be many routes for egress on foot, which would save egress by car for those with mobility concerns • There are many proposed emergency access roads • Our final analysis will detail the pros and cons of each route

  14. Special Thanks • Prof. John Radke • Jerry Wachtel and Dick White