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SA-2 Pressure Control Station Relocation <br />and Transmission Main Improvements <br />RFP No. 21-127 <br />Aliso Creek - Limekiln Creek Restoration Project I City of Los Angeles Bureau of <br />Engineering <br />_ _...__......_,, Flores, PE-2131485-4496-andy.flores@lacity.org <br />The City of Los Angeles selected Tetra Tech to provide pre -design and design services for the Aliso Creek — Limekiln Creek <br />Restoration Project, located adjacent to the Los Angeles River. The project is located at the confluence of the concrete lined <br />Aliso and Limekiln Creek flood channels, which merge together in the southern portion of the project site. The project <br />improvements involve constructing several stormwater Best Management Practices (BMPs) intended to divert, capture, filter <br />and use on -site and off -site runoff from the creeks in order to reduce contamination in Aliso Creek, Limekiln Creek, and the <br />Los Angeles River. The proposed BMPs include low flow channel diversions, pre-screening treatment devices, stormwater <br />pump stations, bioretention basins, the restoration of upland and riparian habitats, and BMP educational signage. A passive <br />trail system is included to expand the existing park facilities. <br />The goal of the project is to significantly reduce the pollutant loads, as well as transform a specifically built flood control facility <br />into a multi -function green infrastructure facility. The project will also be designed to achieve a Platinum Envision Rating. This <br />important water quality project is part of the City's overall efforts through the Proposition 0 Bond Program to improve water <br />quality and reduce pollutant loads that are currently being conveyed to the rivers, lakes, and oceans within the greater Los <br />Angeles area. <br />4 <br />IIIIIIIIIIIIIIL <br />ENGINEERING <br />CITY OF LOS FNGEEE£ <br />TETRA TECH <br />