In 2024 the Town of Erin retained Ainley Group (Ainley) to review and update the recommendations of the Erin Schedule “B” Water Class Environmental Assessment on the basis of new information, including an up-to-date understanding of proposed development within the urban Erin boundary. As a result, The Town of Erin is undertaking an Addendum to the 2020 Urban Centre Water Servicing Municipal Class Environmental Assessment (MCEA). This study is being conducted in accordance with the Municipal Class Environmental Assessment document (as amended in 2024). The intent of the Addendum is to review alternative sites for the Erin-Hillsburgh Booster Pumping Station (BPS), and the Hillsburgh water storage facility, and ultimately select a preferred alternative for each. The Addendum incorporates new information, including an up-to-date understanding of proposed development within the Erin urban boundary, and associated water system requirements.