LAQM FAQs

FAQSort by TitleKeywordsPublished Date (sort)
8 Where can I find information about Air Quality Monitoring Equipment Suppliers?Monitoring supplier equipment mcerts 01/06/2011
11 Are the references in Box 2.2 of TG(09) correct?Monitoring Modelling Box 2.2 error background monitoring reporting tg09 technical guidance 21/11/2016
6 What is meant by the term local background in LAQM.TG(09)Monitoring Modelling Background Local 21/11/2016
32 What is expected of local authorities who identify potential exceedences through monitoring data in a Progress Report?Monitoring Reporting AQMA Exceedence exceeding exceedance progress report monitoring AQMA Detailed Assessment 21/11/2016
34 For diffusion tube locations with triplicate tubes, how do I know whether to discount outlying tubes in calculating my bias adjustment factor?Diffusion Pollutant Monitoring diffusion tube triplicate outlier bias adjustment factorNitrogen NO2 21/11/2016
43 How long do I need to monitor for?Monitoring monitor duration minimum length month 21/11/2016
49 How should model uncertainty be accounted for within the review and assessment process?Modelling Monitoring model uncertainty account predict 21/11/2016
52 How can I calculate a local bias adjustment factor for nitrogen dioxide diffusion tubes?Diffusion Monitoring local bias adjustment factor diffusion tube calculateNitrogen NOx NO2 21/11/2016
54 If I upgrade my TEOM analyser to a FDMS analyser, or replace it with an FDMS, is it possible to compare the data for the purpose of trend analyses?Pollutant Monitoring PM10 FDMS Particulate 21/11/2016
58 What influence does location have on diffusion tube bias? In particular, can roadside co-location studies be used to adjust background diffusion tubes and vice versa?Diffusion Monitoring Pollutant Bias tube No2 nox nitrogen location co-location colocation collocation 21/11/2016
63 Measurements of nitrogen dioxide have been made over the last few years at the kerbside using diffusion tubes. Is there any way the results can be used to assess concentrations at the facade of nearby residential properties, to allow comparison with the annual mean objective?Monitoring Pollutant Road Fall Distance nox no2 nitrogen kerb road diffusion tube 21/11/2016
64 What if a local authority feels it has insufficient monitoring data? A local authority may feel it has insufficient time for an adequate period of monitoring between embarking on a Detailed Assessment following the conclusion of an Updating and Screening Assessment or Progress Report and submitting the Detailed Assessment in April of the following year.Monitoring Reporting Data Insufficient DA Detailed 21/11/2016
66 Monitoring Equipment - What are the recommended methods for making measurements of sulphur dioxide?Monitoring Pollutant SO2 Equipment 21/11/2016
67 Monitoring Equipment - What are the recommended methods for making measurements of nitrogen dioxide?Monitoring Pollutant Diffusion NO2 Equipment NOX Nitrogen diffusion tube 21/11/2016
68 Monitoring Equipment - What are the recommended methods for making measurements of PM10 particles?Monitoring Pollutant PM10 Particulate Equipment 21/11/2016
69 When defining nitrogen dioxide diffusion tube bias, is it better to use the local co-location result or the average of as many co-location studies for the laboratory and tube preparation method as possible?Diffusion Pollutant Monitoring NO2 NOX nitrogen Bias co-location collocation colocation local bias national bias diffusion tube 21/11/2016
71 Site Location - Once I've identified a suitable area for monitoring, what do I need to take into consideration when locating a specific site?Monitoring Location Site 21/11/2016
76 QA/QC - What QA/QC procedures do I need to implement for diffusion tube monitoring?Monitoring Diffusion Pollutant QA QC NOX NO2 nitrogen diffusion tube 21/11/2016
77 QA/QC - What QA/QC procedures do I need to implement for gravimetric PM10 monitoring?Monitoring Pollutant QA QC PM10 particulate 21/11/2016
78 QA/QC - What QA/QC procedures do I need to implement for automatic NOx and SO2 monitoring?Monitoring Pollutant QA QC SO2 Sulphur NOX NO2nitrogen 21/11/2016
82 Should kerbside data be used in the Review & Assessment?Monitoring Reporting Kerb data location relevant exposure 21/11/2016
87 Site Location - Where should I try to locate my monitors for investigating emissions from point sources?Monitoring Industrial Location Site Point Exposure 21/11/2016
88 Site Location - Where should I try to locate my monitors for investigating road traffic emissions?Monitoring Road Location Site Road Kerb Exposure 01/03/2010
92 I have read that the TEOM has failed to meet the ECMonitoring Pollutant PM10 Particulate TEOM FDMS 21/11/2016
102What are the implications of the equivalence tests for Particulate Matter monitoring for local authorities?Monitoring Pollutant equiv PM10 Monitoring particulate 21/11/2016
104What has been the outcome of the equivalence tests for Particulate Matter monitoring that has been carried out by Defra and the Devolved Administrations? What are the implications for local authorities?Monitoring Pollutant equivalence PM10 Monitoring particulate 21/11/2016
109What QA/QC procedures do I need to consider with data management and back-up?Monitoring QA QC 21/11/2016
114What should I do with information on diffusion tube precision?Diffusion Pollutant Monitoring NO2 NOX Precision nitrogen 21/11/2016
118Where can information be obtained on the quality of diffusion tube results?Diffusion Pollutant Monitoring NO2 NOX Bias diffusion tube WASP precision laboratory performance 21/11/2016
121Why was there an update to the VCM web portal in April 2009?Monitoring Pollutant VCM PM10 21/11/2016
123Monitoring Data Tables in the USA Template have a column headed "Worst Case Location?" . What does this mean?Monitoring Worst Exposure worse case location 21/11/2016
134Box 2.3 of LAQM.TG(09): how to predict nitrogen dioxide concentrations at different distances from roads. The calculation specifies that distances should be measured from the kerb of a road. I am interested in a road along which cars are parked most of the time, so moving traffic does not use the nearside lane. Should I measure my distance to the kerb or to the edge of the nearest trafficked lane?road kerbside distance from kerb fall-off monitoring diffusion21/11/2016

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