final report - King County

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I-PLACES Development and Application FINAL REPORT

I-PLACE3S Health & Climate Enhancements and Their Application in King County

FINAL REPORT Prepared by: Lawrence Frank & Co., Inc. The Sacramento Area Council of Governments Mark Bradley Associates June 1, 2009 Funded by: Federal Transit Administration Part of the HealthScape project:

Prepared by: Lawrence Frank and Company, SACOG, and Mark Bradley


I-PLACES Development and Application FINAL REPORT

Table of Contents Executive Summary



Background About HealthScape Project purpose About this report



I-PLACE3S Overview



White Center/SW 98th Street Case Study Application Study area description Scenario description Interpretation of Results



Conclusions Other potential uses of I-PLACE3S in King County


Appendix A. I-PLACE3S Background Appendix B. Methodology Data sources Independent variables Dependent variables Model results Application of results to I-PLACE3S Other changes to I-PLACE3S Caveats and cautions Appendix C. Creating CO2, NOx, HC and CO Emissions Estimates

Prepared by: Lawrence Frank and Company, SACOG, and Mark Bradley

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I-PLACES Development and Application FINAL REPORT

EXECUTIVE SUMMARY Project Purpose HealthScape is King County’s effort to promote public and environmental health through community design. HealthScape builds upon the findings of the LUTAQH (Land Use, Transportation, Air Quality and Health) 1 study. The purpose of this part of the HealthScape project was to create and test a tool that can evaluate potential transportation, health, air quality and climate change impacts of different development alternatives. The results of the LUTAQH research on the relationships between land use patterns, air quality, transportation and health, completed in 2005, provided the foundation for the tool. The original research results were updated, integrated into a modeling tool (I-PLACE3S), calibrated for application within all of King County, and tested on a case study site – SW 98th Street in White Center (unincorporated King County). Methods I-PLACE3S is a web-based modeling platform for scenario planning. It can evaluate how alternative development approaches or transportation investments may impact a number of indicators, including transportation patterns, energy usage, cost efficiency, and climate change. I-PLACE3S analysis is conducted through a web-based map display. This strong visual component and interactivity supports scenario development and testing by non-technical users in settings such as public workshops, as well as in more technical settings. An updated analysis of built environment, transport, physical activity, and air pollution data in King County generated the statistical relationships that were programmed into I-PLACE3S, creating a version of I-PLACE3S that is calibrated especially for the County. To generate those equations, we measured land use patterns around each King County household location in the 2006 Puget Sound Regional Council (PSRC) household travel survey, and correlated these land use patterns to travel, air pollution (oxides of nitrogen, hydrocarbons, and carbon monoxide), carbon dioxide, physical activity and body mass index (BMI). Travel information came from the 2006 PSRC travel survey as well. Emissions estimates were developed from travel survey information using a detailed process that accounts for vehicle occupancy, travel speeds, and hot/cold starts – for each vehicle trip in the survey. Information on Body Mass Index and Land Use, Transportation, Air Quality, and Health, developed by Lawrence Frank & Co., Inc. for King County, funded from a Federal Transit Authority Grant (For a full copy of the LUTAQH final repo