The lessor is responsible for total maintenance and repairs of the leased premises. Such maintenance and repairs include site and private access roads. All equipment and systems shall be maintained to provide reliable, energy efficient service without unusual interruption, disturbing noises, exposure to fire and safety hazards, uncomfortable drafts, excessive air velocities, or unusual emissions of dirt. The lessor's maintenance responsibility includes initial supply and replacement of all supplies, materials, and equipment necessary for such maintenance. Maintenance work and the testing and inspection of appropriate equipment and systems must be done in accordance with applicable codes, and inspection certificates must be displayed as appropriate.