Appendix Figure 1. Frequency plots of well depth (A) and casing depth (B) of 210 Florida Department of Environmental Protection permitted Class 5 disposal wells on Key Largo. The three major groupings reflect age with older wells being shallower and newer wells being deeper. The bulk of wells with shallow casings is located in an older developed community (Ocean Reef). Our monitoring well ORO-1A&B are located approximately 1,500 feet from the cluster of 50 wells. [click on each graph to view a larger version]

Appendix Figure 2. Frequency plots of all 619 DEP permitted Class 5 wells (1991 data) in the entire Florida Keys. An additional two 90-ft. wells, not included in these data, were installed near our KLI-1A&B wells while the study was in progress. [click on each graph to view a larger version]