Estimation of Ozone Reactivities for Volatile Organic Compound Speciation Profiles in the Speciate 4 . 2 Database Prepared

Incremental reactivities for ground-level ozone formation were assigned for all volatile organic compound (VOC) emissions profiles in the Speciate 4.3 database. Best estimate and upper and lower limit reactivity values are given for the maximum incremental reactivity (MIR), maximum ozone incremental reactivity (MOIR) and equal benefit incremental reactivity (EBIR) calculated using the latest version of the SAPRC-07 chemical mechanism. The results are given in an Excel spreadsheet included as an appendix to this report. Estimates were made for compounds for which no reactivity data are available, and methods were developed to derive upper, lower, and estimated reactivity values for poorly defined or unspeciated VOC categories. The upper and lower reactivity estimates reflect only uncertainties in making reactivity assignments to the chemical categories used in the Speciate database and not reactivity values for individual chemical compounds and uncertainties in how the profiles were developed. The methods employed and the uncertainties in the results are discussed in this report.