Paragraph 6 Time limits
Each steel monopile foundation forming part of the authorised development (excluding scour protection) shall not have a diameter which is greater than 8 metres.
Each gravity base foundation forming part of the authorised development (excluding scour protection) must not have—
a diameter at the level of the seabed which is greater than 35 metres;
in the case of the WTGs, a base height which is greater than 6 metres above the level of the seabed;
in the case of the offshore substation, a base height which is greater than 16 metres above the level of the seabed and less than 1 metre below LAT;
in the case of the WTGs, a column diameter of greater than 9 metres.
Each jacket foundation forming part of the authorised development (excluding scour protection) must not have—
a width spacing between each leg at the level of the seabed which is greater than 35 metres;
a leg diameter which is greater than 3 metres;
a width spacing between each leg at MHWS which is greater than 35 metres;
a pile sleeve height which is greater than 18 metres above the level of the seabed;
a pile diameter which is more than 3 metres;
more than one pile per leg, save in the case of the offshore substation where it shall not have more than four piles per leg;
more than four legs;
in the case of the offshore substation only, a suction caisson per leg which is greater than 15 metres in diameter.
To reduce potential impacts on adult salmon migration—
no more than 69 steel monopile foundations with a pile diameter of 6 metres or less (excluding scour protection) shall be installed as part of the authorised development;
no more than 65 steel monopile foundations with a pile diameter between 6 metres and 6.5 metres (excluding scour protection) shall be installed as part of the authorised development;
no more than 55 steel monopile foundations with a pile diameter between 6.5 metres and 7.5 metres (excluding scour protection) shall be installed as part of the authorised development;
no more than 45 steel monopile foundations with a pile diameter between 7.5 metres and 8 metres (excluding scour protection) shall be installed as part of the authorised development.