The Hornsea One Offshore Wind Farm Order 2014

Chemicals, drilling and debris

11.—(1) All chemicals used in the construction of the authorised scheme shall be selected from the List of Notified Chemicals approved for use by the offshore oil and gas industry under the Offshore Chemicals Regulations 2002(1) (as amended), unless otherwise agreed in writing by the MMO.

(2) The licence-holder shall ensure that any coatings or treatments are suitable for use in the marine environment and are used in accordance with guidelines approved by Health and Safety Executive or the Environment Agency Pollution Prevention Guidelines.

(3) The storage, handling, transport and use of fuels, lubricants, chemicals and other substances shall be undertaken so as to prevent releases into the marine environment including bunding of 110 per cent of the total volume of all reservoirs and containers.

(4) Where foundation drilling works are proposed, in the event that any system other than water based mud is proposed the MMO’s written approval in relation to the proposed disposal of any arisings shall be obtained before the drilling commences, which disposal may also require a marine licence.

(5) The licence-holder shall ensure that any debris arising from the construction of the authorised scheme or temporary works placed below MHWS are removed on completion of the authorised scheme, where practicable.

(6) Prior to the commencement of the licensed activities the licence-holder must submit to the MMO an audit sheet covering all aspects of the construction of the authorised scheme and no works shall commence until the audit sheet content has been agreed with the MMO. The audit sheet shall include details of—

(a) loading facilities;

(b) vessels;

(c) equipment;

(d) shipment routes;

(e) working schedules; and

(f) all components and materials to be used in the construction of the authorised scheme.

(7) The audit sheet shall be maintained throughout the construction of the authorised scheme and the MMO shall be notified of any changes on a fortnightly basis.

(8) In the event that the MMO becomes aware that any of the materials on the audit sheet cannot be accounted for it shall require the licence-holder to carry out a side scan sonar survey to plot all obstructions across Wind Farm Area 1 where construction works and related activities have been carried out under this licence. Local fishermen shall be invited to send a representative to be present during the survey. Any new obstructions that the MMO believes to be associated with the authorised scheme shall be removed at the licence-holder’s expense, where practicable.

(9) The licence-holder shall inform the MMO of the location and quantities of inert material disposed of each month under this licence, by submission of a disposal return by 31st January each year for disposals occurring during the months July to December inclusive of the preceding year, and by 31st July each year for disposals occurring during the months January to June inclusive of that year.

(10) The licence-holder shall ensure that only inert material of natural origin, produced during construction drilling and seabed preparation for foundation works comprised in Work No. 1, and drilling mud shall be disposed of at disposal site reference HU206 (Hornsea Project One Subzone 1).

(11) The licence-holder shall ensure that no waste concrete slurry or wash water from concrete or cement works are discharged into the marine environment. Concrete, cement mixing and washing areas should be contained to prevent run-off entering the water through the freeing ports.

(12) The licence-holder shall ensure that any rock material used in the construction of the authorised scheme is from a recognised source, free from contaminants and containing minimal fines.

(1)

2002/1355, as amended by S.I. 2011/982. There are amendments to instrument not relevant to this Order.