NRDC: No Breathing in the Aisles: Diesel Exhaust Inside School ...

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US EPA and governmental air quality management organizations in U.S. states. A standard for allowable BC concentrations has been legislated by the German Government, and instruments are being installed across Germany with matching interest in other European countries. Aethalometer Model Series The “classic” Aethalometer AE1-series (Andersen RTAA-800) measures BC (“Elemental Carbon”) using optical absorption at 880 nm. Aerosol Black Carbon is the only commonlyfound species that has a strong absorption: the absorption is quantitative and the instrument's response can be calibrated as a mass concentration of BC. The “dual channel” AE2-series (Andersen RTAA-900) combines this measurement with a simultaneous measurement of optical absorption at 370 nm in the near ultraviolet. Many aromatic organic species have strong absorbance at this wavelength, and the UV channel responds very strongly to species such as those present in tobacco smoke, fresh diesel exhaust, etc. 48
APPENDIX D PORTABLE MONITOR/DATA LOGGER MIE, Inc. Tel: (781) 275-1919 Fax: (781) 275-2121 Toll free No.: (888)643-4968 Website: www.mieinc.com DataRAM Real-Time Aerosol Monitor Real-Time measurement of Airborne particulate Concentrations The DataRAM Real-Time Aerosol Monitor measures mass concentrations of airborne dust, smoke, mists, haze, and fumes and provides continuous real-time readouts. With optional accessories, the DataRAM can also provide respirable, PM-2.5, or PM-10 correlated measurements. Designed for High Sensitivity A high-sensitivity nephelometric monitor, the DataRAM samples the air at a constant, regulated flow rate by means of a built-in diaphragm pump. The DataRAM's light scattering configuration is optimized for the measurement of airborne particle concentrations, maximizing the unit's sensitivity. The detected signal is processed by state-of-the-art lock-in circuitry followed by high-resolution digitization, achieving ultimate detectability of atmospheric Rayleigh scattering fluctuations. The Widest Measurement Range of Any Real-Time Particulate Monitor In addition to its high sensitivity, the DataRAM has the widest measurement range of any real-time aerosol monitor-from 0.0001 mg/m 3 (0.1µg/m 3 ) to 400 mg/m 3 . The DataRAM is capable of measuring mass concentrations of airborne particles in industrial and ambient environments ranging from exceptionally pristine to extremely polluted. The DataRAM's auto-ranging digital display provides both real-time and time averaged concentrations. DataRAM with Omnidirectional Sampling Inlet for Ambient Monitoring The DataRAM incorporates several technological advances which guarantee exceptional longterm stability. Near infrared source output feedback control provides drift-free operation and excellent temperature stability. For either manual or preprogrammed/automatic zeroing of the monitor, an electronically controlled latching solenoid valve diverts the entire filtered air stream though the optical sensing stage in order to achieve “zero” air reference. In addition, instrument span checks (secondary calibration) can be performed simply by turning a knob on the DataRAM's back panel, which inserts a built-in optical scattering/diffusing element into 49
Page 1 and 2: NO BREATHING IN THE AISLES Diesel E
Page 3 and 4: TABLE OF CONTENTS Introduction 1 Hi
Page 5 and 6: INTRODUCTION t’s a common occurre
Page 7 and 8: advance of 2006 so that school buse
Page 9 and 10: • A growing number of states have
Page 11 and 12: with children. We were unable to ac
Page 13 and 14: FIGURE 2 Diesel Exhaust Particulate
Page 15 and 16: INTERPRETATION OF THE RESULTS Diese
Page 17 and 18: according to the SCAQMD study, 71 p
Page 19 and 20: espiratory diseases, chronic obstru
Page 21 and 22: Studies have also shown that the pr
Page 23 and 24: y 2002. In addition, there is overw
Page 25 and 26: to be as cost-effective as CNG. Nev
Page 27 and 28: CHAPTER 4 CLEAN FUEL SCHOOL BUS SUC
Page 29 and 30: well trained in-house mechanics con
Page 31 and 32: complaints. Maintenance costs are l
Page 33 and 34: TABLE 4 Certified Emissions Levels
Page 35 and 36: using historical data on in-use die
Page 37 and 38: CHAPTER 6 AFTERTREATMENT, REPOWERS,
Page 39 and 40: CHAPTER 7 FUNDING IS AVAILABLE TO H
Page 41 and 42: Georgia—Clean Fuels Grant Program
Page 43 and 44: CHAPTER 8 LOCAL AIR QUALITY AGENCIE
Page 45 and 46: APPENDIX A SCHOOL BUS MONITORING ST
Page 47 and 48: 2. Load secon d A ethalo m eter in
Page 49 and 50: APPENDIX B POTENTIAL CANCER RISK TO
Page 51: APPENDIX C Magee Scientific Company
Page 55 and 56: • Alarm averaging time : real tim
Page 57 and 58: APPENDIX F Examples of Available Fu
Page 59 and 60: APPENDIX G Sample Letter to Air Boa
Page 61 and 62: Sample Letter to Elected Officials
Page 63 and 64: ENDNOTES 1 State and Territorial Ai
Page 65 and 66: 54 Wiley, J., J. Robinson, T. Piazz
Page 67: 123 Department of Energy, Clean Cit

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