Wrong. Furthermore. It is not just the EPA that has done this research. It has been conducted by the American Cancer Society, NIOSH, OSHA, and the FDA. Now, if you want to argument with all of those agencies and declare it safe at low concentrations, I challenge you to live on a low concentration diet that includes benzene and lets see how that turns out. Good luck with that:
Benzene
ATSDR - Public Health Statement Benzene
The fact is that there is no known safe level of exposure to benzene.
ROFL! It's not wrong. It's 100% correct. Even the EPA says it's safe at low concentrations. The only question is, what concentration is safe? In most cases, take Mercury for instance, there is no laboratory evidence that the substance is toxic in low doses.
You're document doesn't say a thing about any labratory tests that prove low doses of Benzine are toxic. In fact, it doesn't even discuss doses below 700 ppm - that's parts per MILLION, not parts per BILLION.
Your claim that any dose of benzene is harmful is totally unproven. It definitely not a fact that there is no safe level of exposure to Benzene.