Overall, the GBP monitoring tasks are designed to measure compliance with selenium load levels and to detect impacts due to the GBP. Another overall goal of the Project, as described in Section 1.4.1, is to improve, where possible, the current scientific understanding of selenium fate and transport. The monitoring approach provides the opportunity to increase the general understanding of selenium mass balance within the SLD (Grassland Bypass), Mud and Salt Slough and the San Joaquin River. The plan was developed and the tasks assigned to minimize duplication of effort, maximize cost effectiveness, and to coordinate reporting so that the GBP may have timely information to make informed decisions regarding the management of the GBP.