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and transfer bus, bus potential transformers, and metering current <br /> transformers; and <br /> 9.1.5 One (1) under build distribution circuit, including cross-arms and <br /> appurtenances, attached to LCRA TSC's 138-kV Hilltop to Strahan <br /> transmission line structures (no. 4 through 9) of LCRA TSC's. <br /> 9.1.6 One(1) 120/240 AC Panel <br /> 9.1.7 One (1) 125 VDC Panel <br /> 9.2 LCRA TSC owns: <br /> 9.2.1. The following transmission lines comprised of structures, conductors, <br /> insulators, OPGW, splice cans, and connecting hardware: <br /> 9.2.1.1. 138-kV Hilltop to Strahan transmission line; <br /> 9.2.1.2. 138-kV San Marcos to Strahan transmission line; <br /> 9.2.2. 138-kV ring bus including structures, bus supports, insulators, <br /> hardware, foundations, and jumpers; <br /> 9.2.3. One(1)power transformer Tl with associated surge arresters; <br /> 9.2.4. One (1) 138-kV circuit switcher (CS9515) with bypass switch <br /> (9517) and disconnect switch(9512); <br /> 9.2.5. Two (2)mobile transformer disconnect switches (ST582 and ST585) on <br /> the ends of the 12.5-kV operating and transfer buses; <br /> 9.2.6. Station Service equipment; and <br /> 9.2.7. One (1) control enclosure with battery bank, charger, HVAC, and <br /> other appurtenances. <br /> 9.3 LCRA TSC is responsible for installing and will own the following to <br /> support the Project: <br /> 9.3.1 Upgrading the existing T230 San Marcos—Strahan 138-kV transmission line <br /> to a minimum 105 deg F ambient temperature rating of 580 MVA (MOT 482 <br /> deg. F)using single 1433.6 ACSS/TW Merrimack conductor and 144 OPGW. <br /> 9.3.5 Replace CCVT2 with potential transformers (PT-2) and associated surge <br /> arrestors (SA-4). <br /> 9.3.6 Install a mobile transformer at Strahan to serve SMTXU load during T1 <br /> Transformer bus outage. <br /> 9.3.7 Install one PVT-1 with associated surge arrestor(SA-5). <br /> 9.4 SMTXU is responsible for the following in association with the project: <br /> 9.4.1 Coordination with LCRA TSC on the installation of the mobile transformer at <br /> Strahan to install the new PVT-1. <br /> 10. Operational Responsibilities of Each Party: Each Party will be responsible for <br /> the operation of the equipment it owns. <br /> 11. Maintenance Responsibilities of Each Party: Each Party will be fully <br /> responsible for the maintenance of the equipment it owns. <br /> 12. Other Terms and Conditions: <br /> 12.1. Access and Physical Security <br /> Fourth Amendment to the Interconnection Agreement between LCRA TSC and SMTXU Page 5 of 7 <br />