Environmental Performance Assurance of Civil and Station Construction Works

Summary

Crossrail required a mechanism for assuring that its tier 1 contractors were performing to a level that would enable the Programme’s strategic objectives to be met. In response to this challenge, the Crossrail Performance Assurance tool was created in early 2012 following consultation with key members of the Programme and the supply chain (i.e. Crossrail’s Tier 1 Principal Contractors). The tool provided a means for objectively measuring the performance of Crossrail’s supply chain contractors and thereby also providing objective assurance evidence that Crossrail’s requirements were being met. It spanned 6 core areas, aligned to Crossrail’s corporate objectives.

This case study describes the approach taken to conduct Performance Assurance for environmental performance during the civil construction phase of the project. It describes the framework that was used to measure performance and the process for undertaking the assessment. It also sets out the benefits that have resulted from implementing the Performance Assurance Framework including an increase in environmental performance of 32% between 2012 and 2015.

This document may be of use to Clients considering developing a means of measuring the environmental performance of their principal contractor(s) on a construction project, and for Principal Contractors in turn to measure the environmental performance of their supply chain.