On October 28, 2011, Region 1 signed an Administrative Order on Consent (AOC) (Docket No. 12-001) with the Rhode Island Army National Guard (RIARNG), in order to resolve violations of the Safe Drinking Water Act at its Coventry, Rhode Island facility. Region 1 negotiated the AOC with RIARNG because of its failure to install optimal corrosion control treatment and comply with the sampling requirements identified in the Lead and Copper Rule. The failure to install optimal corrosion control treatment has caused the facility to exceed the action levels established under the Safe Drinking Water Act for lead and copper. The facility regularly serves a population of at least 25 of the same persons and during weekend reserve exercises the daily population served by the water system increases to approximately 50-100 individuals. Under the AOC, RIARNG will have 90 days to install and construct a Corrosion Control System. The facility will also need to continue to sample the drinking water for lead and copper and provide Region 1 and the RI Department of Health with the lead and copper monitoring results until such time that the water system meets the lead and copper action levels during each of two consecutive six-month monitoring periods.