In June, LQM released a simple to use PAH Profiling Tool designed to test whether your site data supports the use of assessment criteria derived based on the Surrogate Marker Approach (SMA). Several Generic Assessment Criteria for assessing human health risks from PAH mixtures in soil have been published that adopt this approach, including the C4SL for benzo[a]pyrene and the S4UL for “Coal tar (BaP as a surrogate marker)”. These criteria have the potential to significantly simplify human health assessments for PAHs in soils, but only where site data meets the underlying assumptions of the SMA and, in particular, that the PAH profile is similar to that of the coal tars studied by Culp et al. (1998). This is study used as the basis for the toxicological benchmarks used to derive the C4SL and S4ULs.
We have discussed the LQM PAH Profiling Tool previously on this blog. Since then we have run two, very well attended webinars explaining the Surrogate marker approach and how the PAH Profiling Tool can support its use on a site-specific basis.
If you couldn’t make either of the webinars, a recording of the second one is now available on line at https://attendee.gotowebinar.com/recording/6502431869984349953 or to find out more about the PAH Profiling Tool go to http://www.lqm.co.uk/publications/pahprofile/.