Mr. Hancock: To ask the Secretary of State for Defence what recent assessment he has made of the levels of radioactive pollution on foreshores close to the locations of Z berths (a) in Portsmouth harbour and (b) elsewhere; and if he will make a statement. 
Mr. Ingram: The Defence Science and Technology Laboratory (DSTL) Environmental Sciences Department monitors the level of radioactive pollution on foreshores close to the locations of Z berths as part of its wider marine environmental survey programme, the findings from which are published annually. Z Berths are monitored on a regular basis of between one and five years depending on their location. The Portsmouth Z berth is normally monitored every two years.
DSTL's November 2005 report, entitled 'Marine Environmental Radioactivity Surveys at Nuclear Submarine Berths 2004', includes information on samples taken in Portsmouth harbour. The report concluded that there was no radiological hazard to the public during 2004 as a result of operational nuclear-powered submarines. Copies of the report will be made available in the Library of the House.