Sustainable Practices at 81 Newgate Street J Coffey have been working in partnership with Mace for over 22 months on the deconstruction and subsequent construction of the 81 Newgate street building. We have made a firm commitment to minimise the use of diesel on the site by exclusively utilising sustainably sourced HVO and electric machinery. Every delivery of HVO to the site was carried out using dedicated HVO delivery vehicles. The statistics clearly demonstrate the effectiveness of these measures.