The South Coast Air Quality Management District (AQMD) has released a much-awaited draft report on its “MATES III” study. MATES stands for Multiple Air Toxics Exposure Study and, as the number indicates, it’s the third such study the agency has done. The studies estimate cancer risk for residents of the greater
Like MATES II, its predecessor, MATES III bases its findings on air quality measurements taken over one to two years at a combination of 10 fixed and five mobile monitoring sites around the region, including one in
The result for the
To put this risk in context, note that according to the American Cancer Society, “Half of all men and one third of all women in the
Another significant finding of MATES II was that diesel exhaust was estimated to contribute 70% of the excess cancer risk. MATES III, using updated methods to determine diesel exhaust particulates, raises the estimate of this contribution to 84%. In summary, MATES III shows less risk overall than MATES II, but confirms the patterns showing that mobile sources – cars, vans, trucks – are responsible for a major part of cancer risk to residents of the LA basin.
To quote from the report, “While there has been improvement in air quality regarding air toxics, the risks are still unacceptable and are higher near sources of emissions such as ports and transportation corridors… The results from this study underscore that a continued focus on reduction of toxic emissions, particularly from diesel engines, is needed to reduce air toxics exposure.”
Free news isn’t cheap.
We believe that everyone should have access to important local news, for free.
However, it costs money to keep a local news organization like this one—independently owned and operated here in Long Beach, without the backing of any national corporation—alive.
If independent local news is important to you, please consider supporting us with a monthly or one-time contribution. Read more.