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EXHIBIT "A" Scope of Services 4. Monthly Chemical Use Reports: Waterworks shall submit to the Department of Pesticide Regulations monthly chemical use reports detailing the chemicals that were used during each month. The report is due by the 10th day of the month following the month of chemical use. The report is sent directly to San Mateo County Agriculture Commissioners office. A copy of this report will be submitted to the City in the monthly billing along with corresponding forms A, B, and C. 5. Post-Season Review Meeting: Waterworks and city staff will meet at the end of each growth season to review lagoon maintenance issues encountered during the year and make note of management strategies that will help to improve the maintenance approach for the coming season. a. Waterworks is responsible for initiating the meeting and confirming the meeting date and time, and finalizing the agenda with input from City staff. All meetings will take place in Redwood City at the Municipal Service Center, 1400 Broadway, unless otherwise specified. b. The meeting will be scheduled at a mutually agreed upon date and time, within the months of October through November of each year. D. MECHANICAL HARVESTING 1. Mechanical harvesting of algae and widgeon grass will be performed as needed based on the Waterworks water quality monitoring (surveys) activity described in BA.(i)(iii) above. 2. Harvesting shall be performed when the widgeon grass is within one foot of the lagoon surface or sooner if it is determined that waiting would jeopardize the beneficial uses of the lagoon. 3. Hand harvesting by Waterworks Staff Technicians will be used for areas around docks and beaches where the mechanical harvester cannot be used. 4. Waterworks staffing and equipment includes one senior technician, one staff technician, eight foot head mechanical harvester, conveyer trailer, and 25,000 GVW vehicle to tow trailer and fuel. 5. Waterworks commits to having one (1) Harvester on location at Redwood Shores Lagoon from April 1 through September 30 of each year as a guarantee of service. 6. Waterworks will bring in a second Harvester within 24 hours of identifying the accelerated growth. E. CHEMICAL APPLICATIONS 1. Waterworks will assess the need for treatments and apply chemical treatments, following the communication protocol described under B. Water Quality Monitoring and in section G. Communication Protocols. 2. The following chemical will be applied to treat algae and widgeon grass growth: 13 of 18