Please request information from the Washington State Emergency Management Agency relating to the Department of Transportation Emergency Order of May 7, 2014 http://www.dot.gov/briefing-room/emergency-order requiring railroads to disclose the approximate volumes of Bakken crude oil and their routes through Washington State.
Information on public records request-- http://www.mil.wa.gov/about/about_public_records_disclosure.shtml
Here is the request form-- http://www.mil.wa.gov/about/documents/mil_public_records_request_form.pdf
This article outlines the use of this records request strategy. It appears as though the railroads will have to get protective orders against anyone who requests information.