I would place the MBR process in the category of a system that can produce very high quality effluent, but is very expensive from an initial cost standpoint, has high O&M costs, and is very operator sensitive. If this system is a serious option, the staff who will run the plant should be allowed to visit other installations to ask the operators of those facilities what are the pros and cons of the system. A clear understanding of the annual cost associated with this process is absolutely necessary.


Preliminary level OM&R estimates for MBR were included in the Report. BSCWSD’s GM operates an MBR facility in River Rock. In addition, District staff has already toured Butte’s water (ceramic membranes) and wastewater (MBR) plants, as well as River Rock.