[Code of Federal Regulations] [Title 33, Volume 2] [Revised as of July 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 33CFR133.23] [Page 60] TITLE 33--NAVIGATION AND NAVIGABLE WATERS CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 133--OIL SPILL LIABILITY TRUST FUND; STATE ACCESS--Table of Contents Sec. 133.23 Investigation to determine the source and responsible party. (a) The State official shall promptly make a thorough investigation to determine the source of the incident and the responsible party. (b) Upon completion of the investigation, the State official shall forward the results of the investigation and copies of the supporting evidence identifying the source and the responsible party to both the cognizant OSC and the NPFC official specified in Sec. 133.25(c).