What is the maximum distance between readings required to represent the illumination levels at the...

The maximum distance between readings required to represent the illumination levels at the property perimeter for the Sustainable Sites Credit, Light Pollution Reduction, is 100 feet (30 meters). This ensures that the measurements accurately reflect the lighting conditions along the perimeter.

References: The LEED v4.1 O+M reference materials specify that at least eight measurements are required, at a maximum spacing of 100 feet (30 meters) apart, to accurately gauge the illumination levels for the purpose of light pollution reduction1.