Specifications include, but are not limited to:This solicitation is for services to provide commercial heating, ventilation, and air conditioning (HVAC) maintenance and repair at the locations specified in the solicitation. 9.1. Perform repair services on HVAC equipment upon receipt of an authorized service call from the designated TxDOT representative. 9.2. Perform HVAC service as identified on Attachment A – Quarterly and Seasonal Service Requirements if identified in the solicitation. 9.3. Obtain approval of the designated TxDOT representative prior to performing work required to correct any problems diagnosed by the contractor. 9.4. Obtain prior approval from the designated TxDOT representative for services requiring multiple technicians. TxDOT will not pay for additional contractors without the prior approval of the designated TxDOT representative (Ref. Para. 7.9.). 9.5. Cover the furnishings and floor area located below the equipment with tarps or plastic sheeting, prior to commencing work. 9.6. Complete all work required by the end of the business day. In the event the work is not completed by the end of the business day, the contractor(s) shall provide the designated TxDOT representative in writing, the status of the work, the reason for delay and the estimated completion date. 9.7. Clean, repair, or replace any item damaged by the vendor or its subcontractor(s) during the performance of the service to the satisfaction of TxDOT, at no additional cost to TxDOT. 9.8. Leave the work area clean and free of materials, debris and vendor equipment to the satisfaction of the designated TxDOT representative. The contractor(s) shall: 9.8.1. Obtain approval of the designated TxDOT representative for the removal of all mechanical and electrical parts prior to removal. 9.8.2. Remove from the building and dispose of all defective materials removed in performance of the service and in strict accordance with all applicable rules, regulations, codes, laws, ordinances, and statutes or return defective material, mechanical, and electrical parts to the designated TxDOT representative, as directed by the designated TxDOT representative.