Pollutant Concerns

Highlighted Project

Newport Bay Fecal Coliform TMDL and Source Management Plan

County of Orange

EOA assisted the County of Orange, Irvine Ranch Water District and the Santa Ana Regional Water Quality Control Board to develop a proposed scope for conducting a Fecal Coliform TMDL for Newport Bay. EOA developed a Work Plan to conduct the health risk assessment associated with elevated levels of microbial contaminants in Newport Bay and facilitated risk management decisions by integrating the health risk assessment with potential water quality program/structural costs. As a follow up to the TMDL, EOA also developed a Fecal Coliform Source Management Plan for the County of Orange. The management plan identified and quantified the contribution of fecal coliform sources to Newport Bay, and identified current and planned practical management actions that could reduce the impacts associated with pathogens in Newport Bay. Source and receiving water monitoring plans were also developed and presented to the Newport Bay Watershed Committee and submitted to the Santa Ana Regional Board in compliance with the TMDL. EOA also developed recommended revisions to the TMDL consistent with the level of public health risk related to pathogens in Newport Bay water.

Bay Area Stormwater Management Agencies Association