A committee set up under the Federal Advisory Committee Act monitored the progress of SAP 4.1, and questioned several aspects of the final report. The original plan included maps and estimates of wetland loss from a then-ongoing EPA mapping study conducted by James G. Titus, who was also a lead author of SAP 4.1. Early drafts included the maps and results, but the final draft did not. Experts and environmental organizations objected to the deletions. The federal advisory committee also took issue with the maps' removal from SAP 4.1 and recommended that EPA publish the mapping study. EPA later confirmed that EPA management had altered the report and suppressed the mapping study, although it declined to explain why.