This work element will identify and evaluate potential regulatory approaches for achieving nutrient load reductions in SFB should reductions be necessary. A variety of approaches will be considered and evaluated for their applicability to the San Francisco Bay setting and for their potential effectiveness for achieving nutrient objectives. A work group will be convened to specify goals, and develop a work plan and scopes of work. As with Work Element 7, this work will be carried out in parallel with other tasks so that, should nutrient regulations be necessary, a range of options will already have been evaluated to a certain degree. Where necessary and feasible, the potential effectiveness of different regulatory approaches (and related control strategies) will be evaluated through scenario modeling (Task 6.3).