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Applicant says average site lighting is low; board questions localized brightness over tanks
Summary
The applicant reported a site-wide average illumination of 0.3 foot-candles, but staff noted higher localized values over tank walkways; the applicant said those lights are switched or motion-activated and are not continuously on.
Staff asked the applicant to provide average lighting levels (photometric summary) for the Bartlett Bay site. The applicant's electrical engineer reported that the average ground-level illumination across the site is 0.3 foot-candles, which the applicant presented as meeting the LDR intent for minimized illumination at boundaries.
Staff observed higher localized readings over some tank walkways; those points were discussed on the plans and the applicant explained that those lights are not continuously on — many are manually switched on when staff need to access tanks or are motion-activated for the walkway. Board members accepted the explanation but asked that the applicant include a photometric summary table and clarify which fixtures are scheduled as intermittent, switched, or motion-activated in the next submittal.
