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RAPID TECHNIQUES FOR CALCULATING THE POLLUTANT STANDARDS INDEX (PSI)
Citation:
Wallace, L. AND Wayne R. Ott. RAPID TECHNIQUES FOR CALCULATING THE POLLUTANT STANDARDS INDEX (PSI). U.S. Environmental Protection Agency, Washington, D.C., EPA/600/4-78/002 (NTIS PB282028).
Description:
Rapid techniques for calculating the Pollutant Standards Index (PSI) for daily public reporting of air quality are discussed. A complete set of original nomograms for calculating the PSI in gravimetric or volumetric units is presented. The nomograms are recommended for use by all State and local air pollution control agencies as a means of determining its PSI rapidly and accurately. Examples of linear and logarithmic graphs for calculating the PSI are also included. Tables for rapidly identifying the critical pollutant on a given day and automatically determining its PSI value to the nearest unit are listed in Appendix A. Tables A-2 and A-4 list precise pollutant concentrations corresponding to consecutive unit values of PSI between 1 and 500, and can, therefore, provide the definitive verification of estimates of PSI obtained from the nomograms or other graphs. Computer programs for creating these or similar tables appear in Appendix B.