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(b) Fig. 9 (a) Unreinforced/reinforced pile pattern within 5-pile secant wall panels (b) Photograph of secant pile wall under construction on Emergency Spillway 4. REGULATORY REVIEW The declaration of State and Federal Emergencies for the Oroville Dam Spillway Incident greatly facilitated the regulatory permitting process, particularly environmental permitting. However, State and Federal laws also required that the California Division of Safety of Dams (DSOD) and the Federal Energy Regulatory Commission (FERC) review the safety of any dam modifications or repairs, including those for the spillways. Usually, the review and approval process requires months after designs or contract drawings and specifications are submitted for regulatory approval, time that the OER project did not have. The solution to this was to dedicate full-time DSOD and FERC staff to the OER project, both in Sacramento and Oroville. Both agencies were able to commit full-time staff to review the work of OER as it was being developed and implemented in the field. During the foundation excavation and treatments for the chute slabs on the FCO Spillway chute, the final inspection for each slab foundation was approved in the field not only by OER engineers and geologists, but also by an inspector from DSOD and an inspector from FERC, both assigned on-site. The dedication of regulatory staff to the project, while still retaining their independent regulatory function, greatly reduced the time required for regulatory review and approval, typically down to a matter of days or a week for each design review. State and Federal laws also required that the spillway designs and construction be reviewed by an independent Board of Consultants to provide an independent expert peer review of the work. The members of the Board of Consultants nominated by DWR and approved by DSOD and FERC were:  John Egbert, P.E.  Kerry Cato, Ph.D., C.E.G.  Eric Kollgaard, P.E. 80