Question to the Department for Environment, Food and Rural Affairs:

To ask the Secretary of State for Environment, Food and Rural Affairs, pursuant to the Answer of 19 April 2018 to Question 135379, and the reference therein to there being no commercially available equipment for monitoring emissions of PM10 and PM2.5, to what sort of equipment the references on pages 7 and 9 of the Technical Guidance Note M15 on Monitoring PM10 and PM2.5 refer which give advice about continuous monitoring of PM10, PM2.5 and PM1.

Page 7 refers to the requirement to know the results from the continuous emissions monitoring systems (which measure total particulate matter). The results are needed to select an appropriate sampling duration to carry out the discontinuous monitoring of PM10 and PM2.5.

Page 9 refers to techniques for the continuous measurement of PM10 and PM2.5 in ambient air and not in the exhaust gases from the stacks (chimneys) of processes such as waste incinerators (for which there is no commercially available equipment).