Perranporth Aerodrome - Planning Application for Change of use
The former Carrick District Council Planning Department employed the services of Cornwall Acoustics to conduct an independent expert assessment, of noise from proposed maintenance activities within a hanger. We were also tasked to determine if more site noise would be caused from all sources, if an aircraft servicing facility was in use.
A site survey and noise assessment was conducted for all sources. Noise limits for fixed plant machinery and power tools were set at 10dB below the background noise level LA90 when measured or calculated 3.5m from the nearest facade of any residential dwelling.
Control measures were devised for the applicant for the one item of plant which did not meet target limits, planning conditions were also proposed and the application was recommended for approval by the planning authority.
Stuart gave evidence to the planning committee at the public meeting. The aerodrome was subsequently given permission for change of use. There were over 50 objections to the proposal.
Denzell Downs Wind Farm Application Scroll
Cornwall Council has received an application for 5 additional windturbines to be installed at Denzell Downs. Cornwall Acoustics were employed by a local resident who has valid concerns over Amplitude Modulation Noise.
The resident is already subjected to and caused material interference by noise from the existing Bears Down Wind Farm, which probably complies with the planning conditions imposed on the site based on the ETSU- R--97 Document.
Stuart witnessed AM at the resident's property when he worked with the former North Cornwall Environmental Protection Service. However a measurement protocol did not exist to prove or disprove on the balance of probabilities that a statutory nuisance was likely to occur.
The only protocol available was ETSU-R-97 which does not adequately cater for the affects of AM. Recent planning application appeals to High Court have set a new and welcomed president in applying conditions to attempt to control AM. The question will be whether the local authorities will have the resources to enforce conditions if necessary.
Cornwall Acoustics have submitted a report to the Planning Authority on behalf of the residents, outlining major concerns based on previous government research reports which have investigated the site.
Unfortunately a planning condition related to AM would not work at this for this application because the new wind farm would be operated by a different company to the wind farm already existng. This would make any planning condition unenforceable, especially given that AM already occurs and the existing site would not be subject to any new specific AM conditions.
If you are thinking of making a planning application or if an application may affect your noise environment then please feel free to contact us to discuss the matter.