The results of the air quality measurement campaign are available for all SENDRA members.

We took two samples at two different sites: Thames Street and Dale Close of Nitrogen Dioxide (NO2), a typical product of combustion, especially of diesel engines. NO2 is sadly known for it effects on human health, as this sheet from DEFRA explains well.

The results of our measurements are as shown in this table:

 

Sample Number	Site	Date and Time ON	Date and Time OFF	Exposure Time (Hours)	Total μg	μg m-3	ppb	Bias Adjusted
OXF/15A/NA1S1	8 THAMES ST OXF	10/01/16 12:36	10/02/16 19:17	750.68	1.13	21.6	11.2	17.928
OXF/15A/NA1S2	DALE CLOSE OXF	10/01/16 12:43	10/02/16 19:10	750.45	1.36	25.9	13.5	21.497

Note: bias is 0.83

Both measurements are much less than the limit for the annual mean of 40 microgrames m3 of NO2. It has to be considered that our monitoring was only a ‘snapshot’ of one month, the situation could change over time or there could be peaks that are not detected with this technique. Nonetheless, these measurements give an indication that, at least for what regards NO2, air quality is satisfactory in our area.

 

To confirm these measurement, we can have a look at the official county’s figures. If we select the measurements done in Thames Street at the height of Trinity Street, you can see that the numbers are always below the threshold of 40 and consistent with our measurement.

In the future, it would be interesting to observe what are the level of noise and dust, especially since the works at the Westgate have started.