Appendix 5 - Air quality assessment report

                   APPENDIX A: GLOSSARY OF AIR QUALITY TERMINOLOGY

Conversion of ppm to          Where R is the ideal gas constant; T, the temperature in Kelvin (273.16
mg/m3                         + T°C); and P, the pressure in mm Hg, the conversion is as follows:
                                          g m-3 = (P/RT) x Molecular weight x (concentration in ppm)
                                         = P x Molecular weight x (concentration in ppm)
                                                    62.4 x (273.2 + T°C)

g/s                           Grams per second

mg/m3                         Milligrams (10-3) per cubic metre.

μg/m3                         Micrograms (10-6) per cubic metre.

ppb                           Parts per billion.

ppm                           Parts per million.

PM10, PM2.5, PM1              Fine particulate matter with an equivalent aerodynamic diameter of less
                              than 10, 2.5 or 1 micrometres respectively. Fine particulates are
                              predominantly sourced from combustion processes. Vehicle emissions
                              are a key source in urban environments.

50th percentile               The value exceeded for 50 % of the time.

NOx                           Oxides of nitrogen – a suite of gaseous contaminants that are emitted
                              from road vehicles and other sources. Some of the compounds can react
                              in the atmosphere and, in the presence of other contaminants, convert
                              to different compounds (eg, NO to NO2).

VOC                           Volatile Organic Compounds. These compounds can be both toxic and
                              odorous.




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                                                   Belo Developments- Air Quality Assessment - Proposed Service Station, Noosaville
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