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This methodology is a precautionary approach and is used to determine whether new permits or variations to existing permits are acceptable.  In addition, all existing discharges that might affect a SAC or SPA have been assessed using this methodology \[1\].  Out of the 277 sites assessed, two exceeded the dose rate threshold: the Ribble and Alt Estuaries SPA (520µGy/h) and the Drigg Coast SAC (41µGy/h).  Additional assessments were completed for these sites and the results reported in the [Impact of Radioactive Substances on Ribble and Alt Estuarine Habitats report |^SCHO0106BKDV-e-e.pdf]\[6\], and are summarised as follows:
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