MCU15/0095 Air Quality Assessment

                   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
                                    + T°C); and P, the pressure in mm Hg, the conversion is as follows:
mg/m3
                                    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)

                                    For the purposes of the air quality assessment all conversions were
                                    made at 25°C.


g/s                                 Grams per second


mg/m3                               Milligrams (10-3) per cubic metre. Conversions from mg/m3 to parts per
                                    volume concentrations (ie, ppm) are calculated at 25 °C as required by
                                    the SEPP(AQM).


μg/m3                               Micrograms (10-6) per cubic metre. Conversions from g/m3 to parts per
                                    volume concentrations (ie, ppb) are calculated at 25 °C.


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.




                                                                                                                                        Page 30 of 30
                        Synergy Property Partners Pty Ltd- Air Quality Assessment - Proposed Service Station, 123 Eumundi-Noosa Road, Noosaville
                                                                                                    /Network/Projects/4484/Reporting/4484 Report02.odt