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0 Master Plan of Drainage, City of Los Angeles, CA. Project Engineer. Dr. Yen was the Project Engineer and Consulting Engineer on this drainage master plan. The efforts involved setting up the hydrologic link -node models and developing 10-, 25-, and 50-year storm events hydrology. 1-5/Empire Avenue Interchange — Stormwater Pump Station and Storm Drain PS&E, Caltrans, Burbank, CA. Project Engineer. Dr. Yen is the project engineer in charges of hydrology and hydraulic study. The project includes a new storm drain system and a pump station to collect and convey the runoff from the proposed Empire Avenue undercrossing. In addition, the existing storm drain system along the Empire Avenue need to be relocated and reconnected to the existing storm drain system downstream of the project site. Aliso Creek - Limekiln Creek Restoration Project, City of Los Angeles Los Angeles Bureau of Engineering, Los Angeles, CA. Project Engineer. Dr. Yen is the project engineer in charges of hydraulic study. The proposed project includes two diversion structures and two storm drain systems along the Aliso Creek and Limekiln Creek channels to divert flows unto three proposed bioretention basins. Vista Del Monte CLOMR Application, City of Desert Hot Springs, Riverside County, CA. Project Engineer. The proposed development is located at the alluvial fan area of two natural watercourses: the Big Morongo Wash to the northwest and the Little Morongo Wash to the north in the City of Desert Hot Springs. T-year (2-, 5-, 10-, 25-, 50-, 100-, and 500-year) hydrology was developed for both existing and proposed conditions using Riverside County Hydrology Manual procedures. HEC-RAS hydraulic model was used to analyze the existing and proposed channel hydraulics for the Little Morongo Wash and Big Morongo Wash channel. Sediment samples were collected and analyzed for use in the sediment transport analysis. The channel sediment transport was conducted using the USACE SAM Sediment Hydraulic Package for Channel. Due to the uncertainties of alluvial fan flooding, a 2-D FLO-2D hydraulic model was used for 100-year floodplain mapping. The modeling area includes the area from apex of the alluvial fan to downstream of the project site. The conceptual channel improvement plans and flood protection measures with the hydrology and hydraulic/sediment transport reports were submitted and approved by FEMA. Master Plan of Drainage, County of San Diego, CA. Project Engineer. Dr. Yen was the Project Engineer on this drainage pilot project included SDA-5 and SDA-6. The efforts involved setting up the hydrologic link -node models, developing 100-year storm event hydrology with deficiency and mitigation analysis of the existing storm drain systems, cost analysis for the proposed storm drain system, and preliminary detention basin analysis. Master Plan of Drainage, City of Costa Mesa, CA. Project Engineer. Dr. Yen was the Project Engineer and Consulting Engineer on this drainage study. The efforts involved setting up the hydrologic link -node models for existing conditions, developing multiple storm events hydrology, deficiency and mitigation analysis of the existing storm drain systems. Master Plan of Drainage, City of Huntington Beach, CA. Project Engineer. Dr. Yen was the Project Engineer and Consulting Engineer on this drainage master plan. The effort involved setting up the hydrologic link -node models. Master Plan of Drainage, City of Fullerton, CA. Project Engineer. Dr. Yen was the Project Engineer on this drainage study. The efforts involved setting up the hydrologic link -node models, developing multiple storm events hydrology with deficiency and mitigation analysis of the existing storm drain systems, and cost analysis. City of Santa Ana 2f 2