Section 140.203 - Investigation procedures(a) Insofar as practicable, investigations conducted pursuant to this subchapter shall follow the procedures of 46 CFR part 4.(b) Representatives of the U.S. Geological Survey may participate in these investigations. This participation may include, but is not limited to:(1) Participating in a joint on-scene investigation;(2) Making recommendations concerning the scope of the investigation;(3) Calling and examing witnesses; and(4) Submitting or requesting additional evidence.(c) Reports of investigations conducted under this subchapter shall be made available to parties to the investigation and the public upon completion of agency action.