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DMRB Model

DMRB Model

DMRB Model

(OP)
Any air quality assessment specialists in UK out there who can help?

Firstly, is there anyone or an organisation who provides training of the use of DMRB model Chapter 11 SECTION 3 Air Quality Assessment?

Secondly, I am trying to run the DRMB for predicted air quality assessment of a new housing development. I am running it in accordance with a similar AQA we had commissioned previously. I have AADT values, average speed, %HDV/LDV and bacground concentrations. I am modelling for prdeicted NO2 AND PM10 impacts. Traffic increases are minmimal but the regulatory is asking to run the DRMB to identify the annual predicted concentrations. Now when running the model using the previous AQA, I am getting all the same results for PM10, benzene, 1,3 butadiene and CO, but I am getting different results for NOX and N02.

Basically I am running the model where I already know the results to gain confidence in using the model. I am aware there is a NOX - NO2 calculator which has to be used to obtain NO2 and NOX but am not too sure on how to use it and when I input the required values from DRMB I get different levels of NO2 and NOX that the results already run. Does anyone know where I am going wrong or can provide any input Help greatly appreciated.
 

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