Monthly air quality and noise data sets for HS2 Phase One as required by the Phase One Code of Construction Practice. Data to be reviewed in conjunction with the relevant monthly air quality and noise reports: https://www.gov.uk/government/collections/monitoring-the-environmental-effects-of-hs2 HS2 Phase Code of Construction Practice: https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/593592/Code_of_Construction_Practice.pdf