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The transmission line rights-of-way are managed to remove vegetation that has the potential to ' <br /> interfere with the operation and maintenance of the line. The applicant would conduct vegetation <br /> surveys and remove undesired vegetation that may interfere with the operation of the transmission <br /> line. Typical vegetation maintenance for a 115 kV transmission line is on a three to seven year cycle <br /> dependent on vegetation growth and weather events. Vegetation management generally includes a <br /> combination of mechanical,hand clearing,and herbicide application to remove or control the <br /> growth of vegetation in or impinging upon the right-of-way. <br /> Herbicide application would be applied following U.S. Environmental Protection Agency (EPA) and <br /> state agency regulations and is applied by licensed applicators. ' <br /> Substations require a certain amount of maintenance to keep them functioning in accordance with <br /> accepted operating parameters and NESC and NERC requirements.Transformers,circuit breakers, <br /> batteries,protective relays,and other equipment need to be serviced periodically in accordance with <br /> the manufacturer's recommendation. The site itself must be secure,kept free of vegetation,and <br /> proper drainage must be maintained. <br /> 1 <br /> 1 <br /> Environmental Assessment <br /> PUC Docket E002/TL-11-223 Page 20 <br /> 1 <br />