CEE 153 F07 PS7-1

CEE 153 F07 PS7-1 - UNIVERSITY OF CALIFORNIA, LOS ANGELES...

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Unformatted text preview: UNIVERSITY OF CALIFORNIA, LOS ANGELES Civil and Environmental Engineering Department CEE 153 Introduction to Environmental Engineering Science Fall Term 2007 T-Th 2-4 PM MS 4000A Prof. K. D. Stolzenbach 5732J Boelter Hall, 206-7624 stolzenb@ucla.edu Problem Set # 7 (due Thursday December 6) _____________________________________________________________________________ 1. Use the information below and the Air Quality Index chart to determine the AQI and the air quality description for a day in which the following maximums occurred. Follow the general instructions given in the text for the old Pollutant Standards Index (PSI): 1-hr O 3 concentration 0.15 ppm 8-hr CO concentration 12 ppm 24-hr PM 10 concentration 150 g/m 3 24-hr SO 2 concentration 0.12 ppm 1-hr NO 2 concentration 0.4 ppm [AQI = 143]] .805 - 1.004 .605 - .804 .305 - .604 .225 - .304 .145 - .224 .035 - .144 0 - .034 SO 2 505 - 604 425 - 504 355 - 424 255 - 354 155 - 254 55 - 154 0 - 54 PM 10 350.5 - 500.4 250.5 - 350.4 150.5 - 250.4 65.5 - 150.4 40.5 - 65.4 15.5 - 40.4 0 - 15.4 PM 2.5---- .125 - .374 .105 - .124 .085 - .104 .065 - .084 0 - .064 O 3 8-hour .505 - .604 .405 - .504 .205 - .404 .165 - .204 .125 - .164---- O 3 1-hour 1.65 - 2.04 1.25 - 1.64 0.65 - 1.24-------- NO 2 40.5 - 50.4 30.5 - 40.4 15.5 - 30.4 12.5 - 15.4 9.5 - 12.4 4.5 - 9.4 0 - 4.4 CO Concentration Ranges Pollutant 401 - 500 301 - 400 201 - 300 151 - 200 101 - 150 51 - 100 0 - 50 Index Value Hazardous Very Unhealthy Unhealthy Unhealthy for Sensitive Groups Moderate Good Category Air Quality Index (AQI) .805 - 1.004 .605 - .804 .305 - .604 .225 - .304 .145 - .224 .035 - .144 0 - .034 SO 2 505 - 604 425 - 504 355 - 424 255 - 354 155 - 254 55 - 154 0 - 54 PM 10...
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CEE 153 F07 PS7-1 - UNIVERSITY OF CALIFORNIA, LOS ANGELES...

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