Common sense suggests that a failure to produce or preserve relevant evidence may involve conduct that falls “along a continuum of fault — ranging from innocence through the degrees of negligence to intentionality.”
In Aramburu v. Boeing Co., 112 F.3d 1398, 1407 (10th Cir. 1997), the Tenth Circuit held that “the bad faith destruction of a document relevant to proof of an issue at trial gives rise to an inference that production of the document would have been unfavorable to the party responsible for its destruction.” In the same decision, the Tenth Circuit further reasoned that no adverse inference should arise where the destruction of a document resulted from mere negligence, because only bad faith would support an “inference of consciousness of a weak case.” FN11.
FN11: “‘Bad faith’ is the antithesis of good faith and has been defined in the cases to be when a thing is done dishonestly and not merely negligently. It is also defined as that which imports a dishonest purpose and implies wrongdoing or some motive of self-interest.” Of course, in cases where an adverse inference instruction is neither requested nor appropriate, the Tenth Circuit has held that a finding of bad faith is not required to impose non-dispositive sanctions, such as excluding evidence.
Asher Assocs., LLC v. Baker Hughes Oilfield Operations, Inc., 2009 U.S. Dist. LEXIS 40136 at *27-28 (D. Colo. May 12, 2009)(internal citations removed).