Why didn't the Base investigate or turn off the wells when the contamination was first found?

When the VOCs first appeared as sample interference, Base officials began to investigate – starting with the sampling process, proceeding to eliminate laboratory error, and finally exploring the water treatment plant and piping infrastructure as sources of the VOCs. In late 1984, the Base began receiving the results of the first round of sampling conducted as part of the Naval Assessment and Control of Installation Pollutants (NACIP) program. These results were the first indication the Base had that VOCs in the groundwater were impacting some of the drinking water wells. Base officials promptly shut down the wells.