According to Appendix E, reported odors inside the building reflect the need for ambient air, indoor air, and sub-slab vapor sampling. The plan also said that "potential preferential pathways" will also be considered and identified. Norfolk Southern's Manager of Environmental Operations Bob Scobie also referred to the vapor intrusion plan when discussing possible contamination of CeramFab, calling the plan "a year-long process of sampling and analyzing the air inside that building." Norfolk Southern declined to comment on the lawsuit, citing a policy of not commenting on pending litigation.