6. Bluestone Wall and Toilets

The 1881 Bluestone Wall, stairs, gate, fence, lamps and toilets are scheduled in the Auckland Unitary Plan (ID 01906) as a Category B historic heritage place.

During phase 4 of the works (approximately between September 2020 and December 2020), the Bluestone Wall will be deconstructed to accommodate the construction of the station. Once the necessary station works are complete, the Bluestone Wall will be reconstructed (approximately between July 2022 and November 2022).

Excavation is required behind and below the level of the wall to construct the tunnel box. The reinstated wall will be strengthened and supported in conjunction with the tunnel piling and tunnel box structure. The Bluestone Wall Management Plan will be produced in accordance with condition 45 and will be certified by the Heritage Advisory Group and provided to Auckland Council. The purpose of the Bluestone Wall Management Plan is to manage the adverse effects on the heritage values of the Bluestone Wall during construction.

A contractor with experience in heritage projects has been engaged to individually label, remove

and safely store the stone blocks and other elements including the stairs, kerbs, piers and cast-iron

balustrade. The wall will be re-erected in its new position, with each stone and element placed back in the exact order of the original wall 6 . The Bluestone Wall will be fully scaffolded for this operation with access to Durham Lane remaining.

Work in Albert Street in the area of the Bluestone Wall includes piling with a capping beam installed on the west side of Albert Street. Excavation follows, east of the piled wall, with removal of the

Bluestone Wall in layers. Piling with a capping beam is installed to the east side of Albert Street,

followed by further excavation, construction of the tunnel box including its roof, and reinstatement of the Bluestone Wall 7 .

The Bluestone Wall Management Plan will be prepared to manage adverse effects on the heritage values of the wall. The Management Plan will confirm the key heritage values of the wall 8 , and

summarise alternative construction methods to ensure an approach with the least impacts on the heritage value of the wall, within the practical constraints of constructing the project. The Management Plan will include the methodology for recording, deconstructing and reconstructing the Bluestone Wall, including:

recording in situ, prior to any change (archival photographic record/ point cloud scan/ /photogrammetry/ measured drawings). recording and drawings for the deconstruction phase- annotated drawings and photographs with every block/element numbered. drawings for reconstruction- in conjunction with new structural work, as well as reinstatement of missing sections, repairs. Physical numbering of every block, and sections of balustrade ready for deconstruction. Deconstruction and pallet storage, in layers/sections. Transport and off-site storage. Reconstruction phase.

6 Aotea CMP 20 August 2019.Section 1.1.4.1.1 7 Diagrams showing stages of works in Albert Street; CMP Extract Maps, Sheet 4 of 4. 8 Described in reports including the Durham Street Wall Heritage Assessment, 2014, prepared by Salmond Reed and

Detailed Heritage Assessment, 2015 prepared by Reverb. Page 28 | Aotea Station Main Works