Question to the Department for Environment, Food and Rural Affairs:

To ask His Majesty's Government, further to the Written Answer by Baroness Hayman of Ullock on 20 March (HL5461), how many marine disposal sites there are, and how many are monitored each year.

There are 727 marine disposal sites in total. Of these, 251 are open, 432 are closed, and 44 are disused.

Before a disposal site is designated, an applicant must submit a disposal site characterisation report to the Marine Management Organisation (MMO), or evidence to satisfy the MMO that the area is suitable for disposal. In addition, all sediment being disposed of to sea is regularly sampled and analysed, with continued disposal requiring sign off from the MMO. Monthly disposal volumes are reported to the MMO in line with OSPAR requirements.

The MMO, in conjunction with the Centre for Environment, Fisheries and Aquaculture Science (Cefas), also undertakes an annual Disposal Site Monitoring programme. The programme sets out how sites are monitored based on location, activity level, public interest, age of current monitoring data for the area, and frequency of site usage.