In the Light Industrial District, a building may be erected, altered or used or a lot or premises may be used for a recreational complex consisting of indoor or outdoor facilities, including, but not limited to, swimming pool, gym and health club facilities, tennis, squash, handball, racquetball and badminton courts, together with related community service facilities, meeting room facilities, provided that the same is operated by an association, not-for-profit corporation or membership corporation not operating as a gainful business, and shall be a tax-exempt organization pursuant to the Internal Revenue Code as evidenced by a ruling or determination from the Internal Revenue Service.