I think in general it's a very good article and I like the summary in the end how the different interventions can also have trade offs.

The only thing I would disagree with is the recommendation of the uHoo monitor. There are many people not happy with the accuracy and AQSpec, a US EPA test center, also tested the unit with pretty bad results.

See http://www.aqmd.gov/docs/default-source/aq-spec/field-evalua...