Hearing to consider a variance request to allow lanai enclosures in Waikiki for a nonconforming apartment building; hearing to consider a variance request to allow a two-car garage and utility room in Kapahulu to encroach into yards; hearing to consider a variance request to allow a projecting sign in Waikiki for a retail store that exceeds regulations; hearing on BHP Petroleum Americas Refining Inc. request to allow a liquid petroleum gas extraction tower to exceed height limit and increase nonconformity