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I know that the SGV for Arsenic was derived by looking at the Oral and Dermal Pathways only. However, when bioaccessibility data is applied to the oral pathway this changes things considerably. Are we to take note of the inhalation HCV generated when undertaking further risk assessment or are we to ignore the inhalation pathway completely because it makes a very minor contribution to the total exposure from the soil? Your thoughts would be greatly appreciated. Regards James Langley Pollution Control Officer Public Health and Protection Cornwall Council [log in to unmask] Room 251, 39 Penwinnick Road, St Austell, Cornwall www.cornwall.gov.uk