I just installed a new Rheem Powervent water heater (natural gas). My wife said she smelled natural gas in the basement a week later so I checked all of the lines with soap and water and didn't find anything. So I called the gas company and they came out and said that they found a ".05" leak at the water heater's gas valve (it says Honeywell on it). I then called Rheem and they said it was normal to have a leak there. I think they're just avoiding action because the gas company didn't red flag the leak.
2 questions: Is a leak of this sort "normal"? What does a ".05" leak mean for my family's health?