Non-Professional Services Agreement between May 19, 2026 City of San Leandro and Calcon Systems, Inc.—Exhibit A Page 1 of 1
EXHIBIT A
AMENDMENT 1 SCOPE OF SERVICES
Calcon will provide the following Eaton Electrical Engineering Services & Systems (EESS) work under Calcon's contract. Eaton's proposals SFK1-260915-01-RC Rev.2, SFK1-260916-03-RC and SFK1-260908- 01-RC define the scope of work in detail.
Item 1 - Medium voltage switchgear maintenance and testing (SWGR-MAIN) • Switchgear inspection, clean and torque
• Maintenance and testing of seven (7) MV vacuum circuit breakers and protective relays per Eaton's Preventive Maintenance Testing Guidelines
• Engineering report with findings, test data and recommendations Item 2 - Transformer TR-G (generator step-up, 1500 kVA) testing • Inspection, insulation resistance (Megger), turns ratio (TTR), fluid sample and connection torque per Eaton's guidelines, to rule out a shorted winding or loose connection between the generator and the line side of 52-G
Item 3 - Power quality investigation, generator start/transfer • Eaton power systems engineer onsite (one day) with a Fluke 1777 power quality analyzer at the 52-G PT/CT circuits and at the generator terminals during two generator start/transfer events, to isolate the cause of the single-phase undervoltage at the 12.3 kV switchgear • Engineering analysis and report with potential causes and recommendations Item 4 - Short circuit, coordination and arc flash study update • Update of the 2017 Eaton study (TQSIMSF005403.1A) in SKM with current utility data and facility changes since 2017
• Updated study report, one-line diagrams, system review and recommendations, and new arc flash labels (labels shipped to the City; field application by City/others) Item 5 – Additional support as needed to repair the generator switching system, which may include additional subcontracting.