The York Potash Harbour Facilities Order 2016

PART 2 LICENSED ACTIVITIES

2.  For the purpose of constructing and maintaining the authorised development the licence holder may carry out the activities set out in this Part as if those activities were licensed under the 2009 Act.

Construction of the quay

3.  The undertaker is permitted to construct the quay (Work No. 2) within the quay limits (as described in Schedule 6 (quay limits)) according to the following specification—

(a) the quay length must be no more than 486 metres;

(b) the quay width must be no more than 87 metres; and

(c) the deck level of the structure must be no more than +5.6 metres Ordnance Datum.

Open quay structure

4.  The undertaker is permitted to construct the open quay structure according to the following specification—

(a) suspended deck structures comprised of a reinforced concrete deck supported by approximately 200 driven steel tubular piles in phase 1, with an additional 200 piles required for phase 2, in the order of 0.9 metres diameter;

(b) the area of the deck structure (quay) is to be no more than 28 metres wide by 280 metres long in phase 1, increasing up to a total of 486 metres long in phase 2;

(c) the quayside is to consist of engineering fill to create a trafficable surface adjacent to the quay, for the full length of the quay. The width of the quayside is to be between 43 metres and 53 metres;

(d) 2 access bridges are to be constructed during phase 1, allowing one to be used for the construction of phase 2 whilst maintaining the other for operational access;

(e) installation of a revetment on the re-graded slope, either to be placed on the re-graded slope prior to installation of piles, or placed following installation of the piles; and

(f) replacement of the existing pipe through the embankment between the Tees estuary and the lagoon with 2 new pipes of larger capacity each incorporating independently operated flow control structures.

Solid quay structure

5.  The undertaker is permitted to construct the solid quay structure according to the following specification—

(a) phase 1—

(i) the combi-pile wall is to consist of 120 king piles (of approximately 2 metres diameter) with intermediate sheet piles;

(ii) the anchor wall is to consist of a length of approximately 210 metres of sheet piles; and

(iii) 40 piles of 660 millimetre diameter are required for the cope beam to support the landside ship loader rails, installed between the tie rods that connect the king piles to the anchor wall;

(b) phase 2—

(i) the combi-pile wall is to consist of an additional 90 king piles with intermediate sheet piles;

(ii) the anchor wall is to consist of an additional plan length of approximately 200 metres of sheet piles; and

(iii) a further 35 piles of 660 millimetre diameter are required for the cope beam to support the landside ship loader rails;

(c) the quayside is to consist of engineering fill to create a trafficable surface adjacent to the quay, for the full length of the quay – the width of the quayside is to be between 65 metres and 87 metres;

(d) the footprint is to be no more than 87 metres wide by 280 metres long in Phase 1, increasing up to a total of 486 metres long in phase 2 – access to the quay is to be directly from the reclaimed area behind the quay wall; and

(e) replacement of the existing pipe through the embankment between the Tees estuary and the lagoon with 2 new pipes of larger capacity each incorporating independently operated flow control structures.

Capital dredging and disposal

6.—(1) The undertaker is permitted to carry out capital dredging at the following locations—

(a) the current approach channel to a depth of 14.1 metres below Chart Datum (16.95 metres below Ordnance Datum); and

(b) the berth pocket to a depth of 16 metres below Chart Datum (18.85 metres below Ordnance Datum).

(2) The materials must be dredged in the approximate quantities according to the following table—

Dredged material type	Open quay (cubic metres)	Solid quay (cubic metres)
Silts	181,000	66,000
Sands and Gravels	326,000	196,000
Clays	230,000	194,000
Mercia Mudstone	385,000	358,000
TOTAL (MAXIMUM)	1,122,000	814,000

(3) For phases 1 and 2, the dredging of the contaminated silts is to be undertaken using enclosed grabs.

(4) For phase 1 the dredging of the sands and gravels is to be undertaken using a Trailing Suction Hopper Dredger (“TSHD”).

(5) For phases 1 and 2 the dredging of the clay and Mercia mudstone (marl) must be undertaken using a backhoe dredger, TSHD or Cutter Suction Dredger (“CSD”). For phase 2, dredging of sands and gravel is to be by a backhoe dredger, TSHD or CSD.

(6) The following maximum quantities of dredged material are to be disposed at Tees Bay C (TY 150) offshore dredged material disposal sites—

(a) 615,000 cubic metres of clay and mudstone; and

(b) 326,000 cubic metres of sand and gravel,

unless otherwise agreed with the MMO.

Lagoon habitat enhancement

7.—(1) The lagoon habitat enhancement works must not commence until a written lagoon habitat enhancement plan (to include details of pre and post construction monitoring) has been submitted to and approved by the MMO (following consultation with Natural England, the Environment Agency and the local planning authority).

(2) The lagoon habitat enhancement plan must include—

(a) details of proposals for pre and post construction monitoring;

(b) details of the enhancement of habitat in the lagoon for water birds and a construction method statement regulating the construction of those works; and

(c) a timetable for the implementation of those works.

(3) The lagoon habitat enhancement plan (including pre and post construction monitoring information) must accord with the mitigation and monitoring strategy.

(4) The lagoon habitat enhancement plan must be implemented as approved.