A recent (June 2016) MCERTS policy update from the Environment Agency fully supports on site or rapid measurement techniques to be used for regulatory purposes. The data from the on site or RMT (Rapid Measurement Technique) method can only be used if the quality control procedures for the technique are suitable (QROS has excellent quality control standards) and that a few samples are confirmed by sending them to an MCERTS accredited laboratory when the data is to be used for regulatory purposes. There is no specified number of samples required, for example in the recent Crossrail project in London, QROS analysed over 14,000 samples by on site methods, and a total of 84 samples were used for MCERTS corroboration, which was excellent throughout. The number of samples to be sent for verification will depend on the project and the nature of the contamination present, and is not necessary unless the data is to be used for regulatory purposes.

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Click on the images below to read the full statement.