Don't know about your specific community, but in many cities, they inject atmosphere into the natural gas stream in the winter to boost flow and pressure during the winter, typically below 10%. The utilities state this is quite safe and other than loss of range, the 3000 psi CNG bus I drove had no issues.
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casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.
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