§ Mr. Nick AingerTo ask the Secretary of State for the Environment what is the health risk level accepted by his Department for ground level concentrations of(a) vanadium and (b) nickel in nanograms per cubic meters.
§ Mr. Atkins[Pursuant to his reply 2 March 1995, c. 695]I regret that some of the factual information given was incorrect. The answer should have been as follows:
My Department has no air quality standards for these substances but the World Health Organisation guideline for vanadium is 1 microgram per cubic meter—averaging time 24 hours. There is no WHO guideline for nickel, but the WHO estimate a lifetime cancer risk of 4 x 10-4 at a nickel dust concentration of 1 microgram per cubic meter.