(2) Any landscaping scheme prepared under sub-paragraph (1) must be in general accordance  with the landscaping plans and set out details of all proposed hard and soft landscaping works,  including—  (3) All landscaping works must be carried out and maintained to a reasonable standard in  accordance with the relevant recommendations of appropriate British Standards or other  recognised codes of good practice.  6. —(1) No part of the authorised development which comprises any part of a surface water  drainage system may commence until written details of that surface water drainage system have  been submitted to the county planning authority by the undertaker following consultation with the  local planning authority, the harbour authority and the surface water drainage system has been  approved in writing by the county planning authority.  (2) The surface water drainage system submitted for approval by the county planning authority  under sub-paragraph (1) must be in accordance with the drainage strategy.  (3) The surface water drainage system must be constructed in accordance with the approved  details referred to in sub-paragraph (1).  7. —(1) No part of the authorised development may commence until a written scheme of the  proposed highway lighting to be provided for that part of the authorised development has been  submitted to the county planning authority by the undertaker following consultation with the local  planning authority and the harbour authority and the written scheme of the proposed highway  lighting for that part of the authorised development has been approved in writing by the county  planning authority.  (2) The written scheme of proposed highway lighting submitted for approval by the county  planning authority under sub-paragraph (1) must be in accordance with the highway lighting plan.  (3) The authorised development must be carried out in accordance with the scheme approved  under sub-paragraph (1).  (4) Nothing in this requirement restricts lighting of the authorised development during its  construction or where temporarily required for maintenance.  8. —(1) The undertaker must carry out further ground investigation surveys—  (2) In the event that contaminated land, including groundwater—  Surface water drainage  Highways lighting  Contaminated land and groundwater  (b) of land within the limits of deviation of Work No. 5, prior to the commencement of the  construction of Work No. 5.  (a) as near as reasonably practicable to boreholes BHC06 and BHC101 referred to in the  ground investigation report, prior to the commencement of the construction of Work No.  1E; and  55 (h) implementation timetables for all landscaping works.  (g) details of the maintenance regime for the landscaping scheme; and  (f) details of any existing trees to be retained;  (e) ecological areas;  (d) hard surfacing materials;  (c) proposed finished ground levels;  (b) cultivation, importing of materials and other operations to ensure plant establishment;  (a) location, number, species, size and planting density of any proposed planting; 