In a very informative conversation with Colorado state boiler inspector Randy Austin, resolution of the paperwork for #12 is in progress with John Braun of Mammoth Locomotive Works. Mammoth (http://mammothlocomotiveworks.net) was the builder of the replacement boiler and has an excellent reputation for steam locomotive manufacturing, boiler repair and replacement, as well as other railroad-related projects.
Per Mr. Austin, had the #12 been Colorado-certified before 1998 and a 1988 ‘paper mishap’ not happened, the documentation would have been in place and questions about its use in Colorado would not have arisen. He also said the boiler construction met or exceeded code requirements, and a recent inspection of the interior and exterior of the boiler revealed it to be in very good condition.
Also, a washout plug repair performed in Idaho had the "R"-stamp approval.
Bottom line: get the paperwork in order, take care of some minor details, re-hydro the boiler, and get ready for May 28th.
It looks like there’s gonna be steam on the Loop in 2005.