Description
This report documents the Fiscal Year 2023 groundwater monitoring performed for Waste Area Group 10 at the Idaho National Laboratory (INL) Site, as identified in the Post-Record of Decision Groundwater Monitoring and Field Sampling Plan for Operable Unit 10-08. Seven wells and three intervals from two Westbay® wells were sampled. The wells sampled for Waste Area Group 10 were along the southern INL Site boundary and in the southern part of the INL Site. Groundwater samples from all wells were analyzed for chloride, nitrate/nitrite as nitrogen, and gross alpha and gross beta radioactivity. Sulfate and volatile organic compounds were collected from a subset of the Operable Unit 10-08 monitoring wells. None of the above analytes exceeded U.S. Environmental Protection Agency maximum contaminant levels or secondary maximum contaminant levels.