In collaboration with the Association of Environmental Clerk of Works, IEMA are looking to shine a light on construction phase environmental performance and the implementation of mitigation outlined in supporting information. We will also review the monitoring process and how consistent role specifications can improve the sector. The Association of Environmental Clerk of Works, in partnership with IEMA invite construction phase environmental professionals of all disciplines to discuss the challenges of implementing construction phase mitigation outlined in supporting information. During the webinar we explored the following questions: 1) Is the mitigation outlined in supporting information deployed during the construction phase? 2) Who is designing and or implementing the mitigation? 3) How do we know projects are not having a significant impact on the receiving environment? Through this process we looked to identify current practice, good or bad, and how consistency in role specification can achieve improved construction phase environmental performance.