Question: a) For a groundwater sample with a radiocarbon activity of 36 pMC, estimate the groundwater 'age' (also called 'residence time'), showing all working. b)

a) For a groundwater sample with a radiocarbon activity of 36 pMC,

a) For a groundwater sample with a radiocarbon activity of 36 pMC, estimate the groundwater 'age' (also called 'residence time'), showing all working. b) Analysis of the same groundwater sample also detected the presence of CFCS (man- made compounds widely released into the atmosphere beginning in the 1960s) above the detection limit. How might you explain this? In your answer discuss and or illustrate what is meant by a 'groundwater age distribution'.

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