2.—(1) The noise measurements shall be made so as to provide not less than 20 valid data points as defined in sub-paragraph (2). Such measurements shall provide valid data points for the range of wind speeds, wind directions, times of day and power generation requested by the relevant planning authority. In specifying such conditions the relevant planning authority shall have regard to those conditions which were most likely to have prevailed during times when the complainant alleges there was disturbance due to noise. At its request the undertaker shall provide within 28 days of the completion of the measurements all of the data collected under Requirement 31 to the relevant planning authority.E+W
(2) Valid data points are those measured in the climatic conditions specified by the relevant planning authority but excluding periods of rain. Rainfall shall be assessed by use of a rain gauge that shall log the occurrence of rainfall in each 10 minute period concurrent with the measurement periods set out in paragraph 1(3) and is situated in the vicinity of the sound level meter.
(3) A least squares, “best fit” curve of a maximum 4th order polynomial or otherwise as may be agreed with the relevant planning authority shall be fitted between the standardised mean wind speed (as defined in paragraph 1(4)) plotted against the measured LA90,10min noise level. The noise level at each integer speed shall be derived from this best-fit curve.
Commencement Information
I1Sch. 1 Pt. 4 para. 2 in force at 2.10.2014, see art. 1