Agenda - 12-07-2009 - 5a - Laserfiche WebLink

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30 As the Board is already aware, staff's recommendation on the proposed lumen level limits, as currently contained with Section 6.31.6 (a), was based on existing documentation outlining the types of light fixtures at various non-residential developments. This regulation was being proposed to establish an overall lumen `cap' on non-residential development within urban and rural areas of the County. Unfortunately, staff has discovered that some of this data was incorrectly recorded and, as a result, our assumptions on existing lighting levels were incorrect. This means that our recommend lumen caps are not consistent with existing non-residential development within the County. EXAMPLES: Board member's asked for examples of existing lighting intensity within the County. Staff is able to provide the following detail: Churton Grove Commercial Center (i.e. Food Lion, etc) • The property is approximately eleven (11) acres in area, • There are a total of twenty-eight (28) parking lot lights on thirty (30) foot tall fight poles each with a 1,000 watt Metal Halide fixture generating approximately 110,000 lumens per fixture. • There are a total of three (3) bollard style lights each with a 50 watt Metal Halide fixture generating approximately 1,900 lumens per fixture. • There are several internally illuminated wall signs that contribute a negligible amount of light on the property. • In total, there are approximately 3,085,700 lumens being generated on the eleven (11) acre property, which translates to approximately 280,518 lumens per acre. It should be noted that original data recorded for this property indicated the light fixtures were 100 watt Metal Halide bulbs, not 1,000 watt. As a result out calculations, relating to acceptable lumen limits, were off. Hampton Paint (Town of Hillsborough) -Home Depot • The property is approximately twenty (20) acres in area, • There are a total of thirty-four (34) parking lot lights on forty (40) foot tall light poles each with a 1,000 watt High Pressure Sodium light fixture generating approximately 135,000 lumens per fixture. • There are a total of nine (9) wall mounted light fixtures generating 20,500 lumens per fixture. • There are several internally illuminated wall signs that contribute a negligible amount of light on the property. • In total, there are approximately 4,774,500 lumens being generated on the twenty (20) acre property, which translates to approximately 238,725 lumens per acre. Gravelly Hill Middle School (West Ten Road) - no outdoor sports field lights approved as of this abstract • The property is approximately sixty-five (65) acres in area,