The lead time for the PFAS vessels drives the critical path of the construction schedule regardless of media type. Manufacturers are quoting 24-40 week lead-times from approval of shop drawings. The procurement schedule for treatment equipment and building materials (e.g. Pre-engineered metal buildings) has grown over the course of 2021. The 24-40 week time frame does not include time for design, bidding, shop drawing review, or construction. An option for improving timeline for commissioning a long-term PFAS system is to pre-purchase the equipment.
In order to meet peak demands last summer without the Morses Pond WTP, the Town operated the existing MWRA interconnection at full capacity. Demands last summer were depressed by a combination of water conservation measures and unusually high precipitation. We expect that the summer of 2022 will be hotter and drier than 2021, which means the Town will be further challenged to meet peak summer demands without the Morses Pond WTP available to supplement supply.