Nitrogen Selenium Management Program

Location: Orange County, CA

Michael Baker International implemented the Nitrogen Selenium Management Program (NSMP) Work Plan in the Newport Bay Watershed. In 2004, the Santa Ana Regional Water Quality Control Board issued a general National Pollutant Discharge Elimination System (NPDES) permit regulating discharges of groundwater in the Newport Bay watershed due to elevated levels of nitrogen and selenium in the shallow groundwater posing a threat to water quality. No feasible treatment technology or BMP existed to treat the water prior to discharge and so a group of watershed stakeholders formed and launched the NSMP and developed a comprehensive work plan to address nitrogen and selenium discharges in the watershed. Michael Baker International, leading a consulting team, implemented the work plan, consisting of five main program elements.

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