Document ID: chunk:federal_register_of_legislation:F2011C00855:front:0:p13
Version: federal_register_of_legislation:F2011C00855
Segment Type: other
Provision Reference: 
Character Range: 38658–41757

an alternative method to the reference method for formaldehyde the following method may be used:
United States Environmental Protection Agency Compendium Method TO15, Determination Of Volatile Organic Compounds (VOCs) In Air Using Specially-Prepared Canisters And Analysed By Gas Chromatography/Mass Spectrometry (GC/MS) – January 1999.
Note 3 – United States Environmental Protection Agency Compendium Method TO15 can be used for monitoring formaldehyde provided that: canisters suitable for the detection of formaldehyde are used and, validation for formaldehyde is carried out to the requirements of the accrediting body used by the laboratory and in accordance with the method.
Note 4 - United States Environmental Protection Agency Compendium Method TO17 can be used as an alternative method provided that equivalence can be demonstrated.
4. Sampling Regime
 (i) The sampling regime for benzene, toluene, xylenes and PAHs is as follows:
• One sample every six days over an entire year; or
• 30 samples per season (one day in three is the recommended frequency) for two seasons per year to obtain maximum variability in ambient levels of air toxics as appropriate.
 (ii) The sampling regime for formaldehyde  is as follows:
• One sample every six days over an entire year; or
• 30 samples (one day in three is the recommended frequency) over a sufficient timeframe to include periods when maximum concentrations would be expected (to be conducted within one calendar year).
5. Monitoring Investigation levels
 The monitoring investigation levels specified in Table 2 are for use in assessing any air monitoring data collected for the purposes of this Measure.  The monitoring investigation levels are established for use in assessing the significance of the monitored levels of air toxics with respect to protection of human health.  If the monitoring investigation levels are exceeded then some form of further investigation by the relevant jurisdiction of the cause of the exceedance is appropriate.
Note: The monitoring investigation level values are levels of air pollution below which lifetime exposure, or exposure for a given averaging time, does not constitute a significant health risk.  If these limits are exceeded in the short-term it does not mean that adverse health effects automatically occur.
 Investigation of exceedances may include, but is not limited to:
• Further monitoring to ascertain whether the exceedance was an anomaly to typical of this area;
• Further monitoring over shorter time periods for the irritants to assess whether the health based guideline value is being exceeded;
• Identification of unusual events, such as bushfires, spills, major traffic accidents;
• Assessment of unusual meteorological conditions.
 If there are regular exceedances at the same site jurisdictions may wish to consider management actions.
Table 2: Monitoring investigation levels
Column 1                                                         Column 2          Column 3                        Goal
Pollutant                                                        Averaging period