[2021] NZEnvC 171 Public and Population Health Unit of the Northland District Health Board v Northland Regional Council [pdf, 546 KB]
...the risk of spray drift (for boom or blast spraying release should be no higher than 1m below the top of the shelter to prevent spray drift) • Spray quality • Sensitivity of receivers • Toxicity of spray 2 Refer to Appendix H.X H.10.1 for measurement of wind speed requirements. Aerial spraying – assessed risk 0-1 m/s Any wind direction (not inversion conditions) There is a buffer distance on all boundaries of the target application area of at l...