After watching the recent WC race from Killington on TV, I came to realize that the problem is not the wax on our skis. It is the excess wax that is scraped off by the service techs in the start arena. I saw one tech scraping a good 2mm thickness of wax off a ski onto the snow. Maybe they should use the fiberlene method? That's a lot of waste IMO.
Karl
I brought this up in regard to a study that had been done in a big nordic center and checked for fluoro content in local critters. It actually amazes me that it's still considered an acceptable practice to scrape outdoors and let wax fall where it may or take a tarp covered with wax scrapings outside and just shake it out, when we wouldn't do that with many other substances these days. To a lesser degree, the same is true if applying an overlay and/or brushing at the start; by definition, you're trying to remove wax from the ski and leaving it in the environment. I doubt there's much real impact from doing a final brush, especially with hydrocarbon waxes (the solution to pollution is dilution, after all), but I can see how cumulative effects could have an impact.
I'm a bit surprised that World Cup techs are scraping that thick a layer at the start, though. It's a heck of a lot easier to scrape and brush and get good results in a warm room on a bench than it is at the start (even with a portable bench, which I'd assume they were using). Anyone care to comment on why they'd choose to wait and do final prep in an outdoor environment? Structure protection getting the skis to the top? Time constraints?