The undertaker must continuously log wind speed wind direction and power generation at each of the turbines on the site relating to authorised development. The undertaker must continuously log wind speed and wind direction at all anemometer masts on the site. The undertaker must provide all logged data to the relevant planning authority at its written request and in accordance with the Noise Guidance within 28 days of such request. All data is to be retained until the commencement of a decommissioning and site restoration scheme under Requirement 5.