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The RBF team has been providing prlmarlly hydraulic analysis and design to E Toro Water District as part of our on. call contract. The primary contacts for the District are Kevin Gustorf and Tort Yokoyama, A select Ilsting of projects resulting from our on -call contract are listed below. Water and Sewer Model Update — RBF originally prepared the Water and Sewer Master Plan for ETWD In 2004 which Included hydraulic model development, Master Plan report, and a capital Improvement program. In 2011 as part of our on -call contract, we updated the water and sewer hydraulic models based on recent improvements and private development. Engineering and Design Services for Reduced High Zone Improvements. The District's Reduced High Zone Improvements Project further strengthened the District's ability to provide water to the customers In the Reduced High Zone during an emergency situation. The project Included the demolition of an existing pressure reducing station, the construction of a new pressure reducing station, the construction of a new interconnect with the Moulton Niguel Water District, and the construction of approximately 1200 lineal feet of 8 -Inch water main and 1200 lineal feet of 10 -Inch water main and all of the pipeline appurtenances. El Toro Water District Water Pipeline Interconnection. RBF identified a fire flow deficiency in the District's Reduced High Zone during the system analysis and preparation of the 2004 Water Master Plan. RBF conducted subsequent studies and hydraulic analyses to develop a cost effective solution to mitigate the fire flow deficiency and Improve the system reliability and redundancy. The project Included the design of 1,200 LF of new 10 -Inch water pipe, 1,200 LF of new 8 -inch water pipe, a new Inter - connection with the neighboring Moulton Niguel Water District, and the relocation of an existing pressure reducing station. RBF also provided engineering support during construction. Client Reference: Mr. Raul Cuellar, P.E. CIP Project Manager Orange County Sanitation Disldct 714.503.7828 MmIlartr0ocsd.com Key Staff serving this client: Kevin Gustorf Torl Yolcoyama Orange County Sanitation District - On -Call Services Re. Carbon Canyon Dam Sewer and Pump Station Abandonment Project "I ant pleased to provide a recommendation for RBF Consulting for your team's outstanding efforts on the design of the Corbon Canyon Dam Sewer and Pump Station Abandonment project. Kevin Gustorf, Project Manager, and Torl Yokoyama, Project Engineer, were instrumentalln delivering this complex project which involved the design of approximately 5,000 linear feet of 24 -inch, 33-inch, and 36-inch gravity sewer pipeline, Including two micro- tunnel drives totaling 1,550 linear feet to replace on existing lift station and force main. 7he project required extensive coordination with a private land owner and oil company, the U.S. Army Corps of Engineers, the County of Orange, the City of Brea, and numerous other regulatory agencies. They provided meticulous and timely support to the District which enabled the successful completion of this project under budget. it has been a pleasure working with your staff on this project anal look forward to many more. " Umesh Murthy, P.E., OP Project Manager Orange County. Sanitation District For more than 20 years, RBF has provided a variety of engineering design and related services to Orange County Sanitation District. Projects have included Carbon Canyon Dam Sewer and Pump Station Abandonment, Rehabilitation of College Avenue Pump Station, small to large capital improvements, and on-call services. Carbon Canyon Dam Sewer and Pump Station Abandonment, Orange County, CA. RBF provided design for approximately 5,000 linear feet of 24 -inch, 33 -inch and 36-inch gravity sewer pipeline that replaced an existing lift station and force main. The pipeline begins at the existing pump station in Carbon Canyon Regional Park and ends near the Intersection of Rose and Vesuvius Drives In the City of Brea. For the segment of the 1,500 linear feet of the pipeline constructed via trenchless methods, RBF evaluated 25C -89