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NO2 Considerations
lIn lean burn engines  30-70% of the NOx is NO2
•Reciprocating gas lean-burn engine.
•Diesel engines & 2 stroke engines
•Turbines,
•
lNO2 is a reactive gas
–Sticky
–Soluble in water
•
lConsequence, NOx can be underreported by using improper sample conditioning methods or simply, by not measuring NO2.  (is NO2 considered in permit?)