A331 DIFFUSION TUBE MONITORING LOCATIONS Distance to Tube Distance to A331 Site X OS Y OS Grid Pollutants Relevant collocated with Site Name Site Type kerb of nearest Height (m) ID Grid Ref Ref Monitored Exposure (m) a Continuous road (m) (2) (1) Analyser? A31/A331 A331 - 1 Roadside 487964 148510 NO2 NA <5m N 2 -3 Northbound A31/A331 A331 - 2 Roadside 487987 148495 NO2 NA <5m N 2 -3 Southbound 28m (Slip road A331 3 Ashbridge Kerbside 488288 149875 NO2 in between tube <1m (A331 Slip) N 2 -3 – and receptor) Courier A331 4 Kerbside 488339 150079 NO2 NA <1m N 2 -3 – House May A331 5 Near Road 488461 150351 NO2 3m 47m N 2 -3 – Crescent A331 - 6 Lakeside Rd Roadside 488446 151937 NO2 NA <5m N 2 -3
A331 DIFFUSION TUBE MONITORING LOCATIONS A331 Site ID Site Name Site Type X OS Grid Ref Y OS Grid Ref Pollutants Monitored Distance to Relevant Exposure (m) (1) Distance to kerb of nearest road (m) (2) Tube collocated with a Continuous Analyser? Height (m) A331 - 1 A31/A331 Northbound Roadside 487964 148510 NO2 NA <5m N 2 -3 A331 - 2 A31/A331 Southbound Roadside 487987 148495 NO2 NA <5m N 2 -3 A331 – 3 Ashbridge Kerbside 488288 149875 NO2 28m (Slip road in between tube and receptor) <1m (A331 Slip) N 2 -3 A331 – 4 Courier House Kerbside 488339 150079 NO2 NA <1m N 2 -3 A331 – 5 May Crescent Near Road 488461 150351 NO2 3m 47m N 2 -3 A331 - 6 Lakeside Rd Roadside 488446 151937 NO2 NA <5m N 2 -3
A331_DIFFUSION_TUBE_MONITORING_LOCATIONS.docx