I'm unsure if we're currently extending the default Contrast rule set. How do I determine if any Level 2 rules are in use?
You can determine if any additional rules have been added to your setup directly in your Contrast server (TeamServer). Simply locate and open $CONTRAST_HOME/data/data/rulepack/contrast-rules-external.xml. If you find nothing but a commented out sample rule, then you are not using a Level 2 rule.