Summary and Recommendation
A review of background data indicates that the annual mean objective is likely to be achieved in 2003. Industrial source information provided by WBC, has been reviewed in line with revised Government guidance and are considered unlikely to release significant emissions of 1,3- butadiene.
A Detailed Assessment of 1,3-butadiene is not required.
A Progress Report should identify any changes to the data utilised within this review and be completed by April 2004.
h:\projects\em-260\10000 projects\10151 aq w.berks r&a - phase 2\d design\reporting\10151 aq final u&sa.doc10151-01