Part B. Selection and Construction of Underground Infrastructure Improvement Projects. § 34–1313.07. Underground infrastructure improvement projects plan. § 34–1313.08. Content of application and plan. § 34–1313.09. Consideration of triennial Underground Infrastructure Improvement Projects Plan. § 34–1313.10. Commission order. § 34–1313.11. Use of DDOT Underground Electric Company Infrastructure Improvements. § 34–1313.12. Content of an application to amend an Underground Infrastructure Improvement Projects Plan and financing order. § 34–1313.13. Application to amend order authorizing Underground Project Charges, financing order. § 34–1313.14. Approval of schedule provisions applying the true-up mechanism to the Underground Rider. § 34–1313.15. Application for approval of annual adjustment of Underground Project Charges.