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DRB asks for photometric study after debate over clarifier floodlights
Summary
Board members expressed concern about off-site light dispersion from clarifier floodlights and asked the applicant to provide a photometric plan showing foot‑candles and mounting angles; the applicant agreed to obtain vendor photometrics and return with data.
During the Bartlett Bay review the board questioned whether cut sheets and diagrams were sufficient to judge nighttime light spill from clarifier floodlights and wall‑pack fixtures.
Several members said the diagrams did not establish the mounting angle or dispersion pattern and that neighborhood impacts could not be judged without a photometric plan. One member summarized the board’s direction: “I believe I’m hearing that the board would like a photometric study, please.” The applicant said cut sheets were provided and that the electrical engineer and lighting supplier would be asked to produce a photometric plan; the board asked staff to receive and circulate the study ahead of the continued hearing on Nov. 4.
Board members emphasized they were not contesting the operational need for floodlights above clarifiers but said technical photometrics were necessary to evaluate impacts at property lines and to craft any lighting conditions, shielding or angle restrictions.
