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Consulting Services Agreement between City of San Leandro and 6 November 2023 Schaaf and Wheeler for Trash Load Reduction Planning Exhibit A – Page 2 of 5 HMS. • Determine localized hydraulic impacts based on the selected trash capture device. This scope does not include a model of the entire storm drain system but includes impacts for the area directly upstream of the device only. If a device requires a weir in the system for diversion, the weir height will be calculated to capture the 1-year 1-hour event considering device head loss. • Review of available ACFCD pump station hydraulic design criteria, existing equipment, and operating conditions. • Should any device result in flooding or cause impacts to upstream hydraulic grade or to the pump stations, such as excessive cycling, alternatives will be considered, or mitigation may be proposed. Mitigation may include altering pump station set points, installing longer weirs, installing diversion piping or placing devices offline. Up to two concept drawings for each location would be developed. Should ACFCD require the installed TCDs to have no hydraulic impact during design storm events, significant and costly design measures would be required for compliance. Task 1.4 Conceptual Cost Estimates. This task involves the preparation of construction cost estimates for the proposed alternatives. Task 1.5 Basis of Design Report. A Basis of Design report would be prepared to summarize, synthesize, and document information obtained from the above tasks. This report would include the following items: • An evaluation of possible alternatives and a discussion of their pros and cons; including such issues as cost, complexity, constructability and maintenance. • Recommended alternatives for each location and an overall scope of work that would achieve regulatory compliance. • An opinion of regulatory and jurisdictional permit requirements; including California Environmental Quality Act (CEQA), environmental permits, Caltrans, ACFCD and EBRPD. One meeting with each agency is anticipated. Meetings would occur after hydraulic impacts analysis is completed. Includes Biological Resources Technical Report in support of CEQA. • Identify additional work tasks needed to complete the project that are not already addressed by the current contract and scope of work; such as: geotechnical investigations, structural design, ROW or easement acquisition, additional permits needed, or utility locating and coordination. (The City will complete any identified right of way negotiations, agreements, and appraisals as necessary.)