For the FMC Middleport Environmental Program, on-site and certain off-site impacted areas have been assigned Operable Unit (OUs) numbers that are designated, for technical or administrative reasons, to investigate, and as appropriate, eliminate, or mitigate a release, threat of release, or potential exposure pathways resulting from site-related impacts.

Please click on the links below or on the side menu to see a summary description and latest status of the individual OUs associated with the FMC Middleport environmental program. A map is also provided for the specific OU designations.

• OU1 – On-Site
• OU2 – Air Deposition Area 1
• OU3 – Air Deposition Area 2
• OU4 – Roy-Hart School Property
• OU5 – Culvert 105
• OU6 – Tributary One South
• OU7 – Tributary One North
• OU8 – Jeddo and Johnson Creeks
• OU9 – Former FMC R&D Facility
• OU10 – Groundwater
• OU11 – Eastern Parcel