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01, construction and maintenance, vessel access during operations, and various issues related to channel and other water -body crossings of a pipeline. Rosemont Geomorphic Study, Hudbay Mining Company, Pima County, AZ. Technical Lead. Prepared the long-term field monitoring protocol for the primary watersheds which drain the proposed Rosemont Copper Mine; and provided the first four applications of the protocol. Six channel monitoring points were designated in the watershed and nine stream reaches were evaluated for possible changes in stream channel regime and sediment load from year to year and ultimately over the life of the mine. Mesa Water District Water Wells No. 12 and No. 14 and Pipeline Project, Initial Study/Mitigated Negative Declaration, Santa Ana, CA. Project Manager. Prepared an Initial Study/Mitigated Negative Declaration for the construction of two new water wells and associated pipelines. Prepared analysis for several CEQA resource topics and assisted with the public hearing for the project. Peak Discharge Study, Six -County Region, Southern California Coastal Water Research Project (SCCWRP), Costa Mesa, CA. Project Manager and Principal Investigator. A groundbreaking investigation of semi -arid watersheds in southern California to evaluate the impacts of urbanization on stream channels. Study selected 10 stream reaches in Los Angeles, Orange and Ventura counties that had historical data on channel size and shape changes. Links were evaluated between those changes and the increases in urban/suburban area over the same time period. This investigation provided an initial basis for county and municipal governments seeking to establish hydromodification permitting goals. Drainage Study, Sapphire Development LLC, Riverside County, CA. Project Manager and Principal Investigator. Prepared hydrologic and hydraulic assessments for a proposed 15-lot development located in a one -square mile drainage at the foot of the Santa Ana Mountains. Modeled watershed runoff using HEC-HMS and floodplain/channel flow using HEC-RAS. Watershed was partly developed (lower end) and partly native vegetation (upper, mountainous end); channel was artificial and located cross -gradient on an alluvial fan. Support for the L55 Line Cover and Repair at Channel Crossings, Enbridge Energy, Montgomery County, KS and Lafayette County, MO. Technical Lead. Provided support for Enbridge Energy in the design of pipeline cover repair at two channel crossings. Dr. Coleman lead a team that provided geomorphic and hydraulic assessments of the proposed designs. Included 2-dimensional hydraulic modeling (HEC-RAS) of channel flow conditions under existing conditions and under proposed conditions. Prepared Technical Memo evaluating the results of these assessments to be used as part of the environmental permitting for the repair work. NRG Renewables, Dust Control Memo for the Daggett Solar Energy Project, San Bernardino County, CA. Task Lead. Supported NRG for environmental permitting of a proposed commercial -scale photovoltaic solar energy project on private land in Daggett, CA. A key component of site development, environmental permitting, and facility maintenance will be managing wind-blown materials at the project site. Tetra Tech prepared a Technical Memo evaluating site conditions with respect to climate (including prevailing winds), topography, cover, and potential for detachment and transport of fine particles. Recommendations for likely and viable mitigation measures were also provided. City of Santa Ana 2 6