CASE NUMBER: 10-0439-EL-ESS CASE DESCRIPTION: COLUMBUS SOUTHERN POWER COMPANY/OHIO POWER COMPANY DOCUMENT SIGNED ON: 5/22/2024 DATE OF SERVICE: ________________________________________ 04/05/2010 In the matter of the response to Staff Request considered in O.A.C. Rule 4901:1-10-10 electronically filed by Mr. Matthew J Satterwhite on behalf of Columbus Southern Power Company and Ohio Power Company.