according to the NTSB factual report, the runway surface condition is stated as "snow". So actual conditions seem to have been "contaminated".
edit to add the the final report makes many references to "contaminated" runway in its analysis and recommendations, but I haven't (yet) found an explicit statement "runway was contaminated" or similar, though it seems the only logical conclusion
Last edited by Mad (Flt) Scientist; 18th Aug 2010 at 16:49.