Abstract
Light pollution is a negative lighting condition because it prevents views of the night sky from the general population and
astronomers. As a solution to light pollution, proper lighting system design is vital. The location, mounting height, and aim of
exterior luminaries need to be taken into consideration for efficient use of lighting energy. In line with the effort, this paper
presents the assessment results on light pollution at the port area, which is one of the brightest spots on Earth. In doing so, a GIS
model is created to determine the level of light pollution at the study areas. The lighting power densities of ASHRAE 90.1-2007
are applied in order to find a way to reduce the level of light pollution. The effect of light pollution generated from the Long
Beach Port area is examined by comparing against the sky glow generated from the Port of Long Beach area and other areas
throughout the coast of Southern California, as well as comparing how deep the sky glow penetrates the ocean. The results are
validated by comparing against the lighting specification used in the study areas. The lighting strategies proposed include the
decreased height of light poles and increased spacing between light poles. This study will serve as a platform in which future
researchers may continue and expand on the designs of heights and spaces of lighting poles in order to make severe light
pollution areas better sustainable places.