D.C. Mun. Regs. tit. 15, § 2814
2814.1 The amount of contribution required from each LEC shall be based on total revenues for local exchange services of the local exchange carrier as a percentage of all the LEC's total retail revenues for local exchange service provided in the District of Columbia, for the previous 12-month period ending December 31.
2814.2 The Fund Administrator shall, based on the amount to be contributed to the DC USTF, calculate the contribution required to be made to the Fund by each contributor, based on the fund level established by the Commission and the information provided pursuant to 15 DCMR §§ 2804.1-2804.2.
2814.3 Each LEC shall pay its contribution directly to the Fund Administrator on a monthly basis. The check or other negotiable instrument shall be payable to the "DC USTF." The invoice or other request for DC USTF contributions shall be past due thirty (30) calendar days after the date on the invoice or other request for DC USTF contributions, unless otherwise ordered by the Commission.
2814.4 Interest shall be charged on any payment not received by the past due date at the rate of 1.5 percent monthly.
2814.5 All contributions and interest payments made to the DC USTF shall be deposited into the DC USTF account by the Fund Administrator.
SOURCE: Notice of Final Rulemaking published at 50 DCR 8198 (October 3, 2003); as amended by Final Rulemaking published at 56 DCR 9450, 9451 (December 18, 2009).