January 2024:

High flows and extremely corrosive water chemistry make it difficult to maintain desired pH and Alkalinity levels.

The limestone beds associated with the south treatment system were cleaned in August of 2023. The stone was excavated to the bottom of the beds as indicated in the photo. This largest discharge to Fall Brook continues to be difficult to treat due to the large volume of water and the extremely corrosive nature of the water being treated. Options to reduce the amount of oxygen exposure prior to the water entering the system did little to help improve water quality. The contractor is evaluating options to improve the water quality results. The majority of the water from this discharge will ultimately be diverted to the proposed Tioga River Abandoned Mine Drainage Treatment Plant, reducing the load on the south system which will continue to treat water from this discharge and also serve as back-up to treat overflow in times of high water events.