The Government Says

Monitoring Noise and Vibration on the HS2 Phase One and 2a route (November 2023)

Monitoring Noise and Vibration on the HS2 Phase One and 2a route (November 2023)
Local copy of Birmingham_Noise_Monthly_Report_November_2023.pdf

https://www.gov.uk/government/publications/monitoring-noise-and-vibration-on-the-hs2-phase-one-and-2a-route-november-2023

seen at 16:39, 9 February in Policy papers and consultations.
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