For high NOX issues:
1) change the oil
2) 87 octane gasoline - no additives in the tank like octane boosters, seafoam or injector cleaner!
3) before you have it inspected, make sure it is well warmed up. Drive it around at highways speeds 60+mph for at least 15 minutes before taking it to be inspected.
4) make sure your spark plugs, wires, distributor cap and rotor are all good.
5) make sure your ignition timing is correct.
6) make sure your coollant level is good and the coolant isnt old. (test it)
7) make sure your engine air filter is good.
This will give you a good baseline to determine if the problem is either:
1) EGR Valve
2) O2 sensor
However, based on the low HC and CO numbers posted above I would say the problem is O2 sensor. Everytime I have seen numbers like those posted, replacing the O2 sensor fixes the problem.