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PUBLIC WORKS SERVICES 2017 Redwood Shores Lagoon Aquatic Plant Management and Environmental Engineering Services RFP 1 1. Introduction The City of Redwood City is soliciting proposals for professional aquatic plant management and environmental engineering services to maintain the ambient water quality and beneficial uses of the Redwood Shores Lagoon. The qualified firm must be experience d in all aspects of lagoon maintenance, including the control of nuisance aquatic plant growth through chemical application and mechanical harvesting, and understand the importance of maintaining the aesthetic appearance and quality of the lagoon system. The firm must possess and maintain the necessary license(s) from the California Department of Pesticides Regulation required to apply aquatic pesticides. The firm’s approach to maintaining the Redwood Shores Lagoon must be consistent with and adhere to the City’s draft Lagoon Management Plan: Redwood Shores Lagoon, July 2003, and its amendments, where appropriate. This is a Public Works Project. Contractor and all subcontractors shall pay their employees performing labor under this Contract salaries or wages at least equal to the general prevailing wage rates in effect at the time this RFP is issued, as determined by the Director of the Department of Industrial Relations of the State of California, for the particular crafts, classifications or types of workers employed on the project and shall comply with all applicable requirements of California Labor Code §§1720 et seq. 1.1. The Redwood Shores Lagoon The Redwood Shores development is located on the Redwood Peninsula along the west shore of San Francisco Bay in the City of Redwood City, San Mateo County. The peninsula is bounded by Belmont Slough to the north, San Francisco Bay to the east, Steinberger Slough to the south, and the Bayshore Freeway to the west, shown in figure 1. Levees ring the peninsula, since the ground elevations are below that of the higher tides. Within the interior of the Redwood Peninsula lies Redwood Shores Lagoon. The lagoon is a focal point of the development and contributes to the area's visual aesthetics, aquatic habitat, and recreation (boating, swimming, and windsurfing). The lagoon also serves as a stormwater retention pond for the adjacent developed areas and storing surface runoff during periods of high tide in San Francisco Bay. The City’s Public Works Services Department provides overall operation and maintenance of the lagoon, in cooperation with county, state, and federal oversight agencies. The entire lagoon system covers approximately 150 acres. The main lagoon is approximately 9,000 feet long. It is oriented in a northeast to southwest direction between Marine Parkway and Redwood Shores Parkway. At the two ends, the lagoon becomes wider (the southwest end of the lagoon is diamond shaped). At mid-length, the main lagoon connects with two smaller lagoons located on either side of Marlin Drive. A recreational area known as Neptune Beach is part of the small lagoon on the southwest side of Marlin Drive. These two lagoons interconnect under Marlin Drive by small diameter culverts. The lagoon connects to sloughs leading to San Francisco Bay at six locations: • Two gravity inlets from Belmont Slough, • One gravity inlet from Bay Slough, located near the northeast end of the lagoon system, • One gravity outlet to Belmont Slough from the diamond-shaped portion of the lagoon, 6.1.B. - Page 13