In March 2007, the Den Brook Judicial Review Group (DBJRG) was formed by local residents. Headed by Mike Hulme, whose property was one of the closest dwellings to the proposed site, the group came together over concerns regarding the potential for noise pollution from the turbines. A key concern was the potential for sleep disturbance due to a phenomenon known as amplitude modulation. This form of noise, which has been reported at a small number of windfarm sites, is poorly understood.
