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incorporated wherever feasible (mercury vapor shall be avoided, and incandescent lights shall be avoided unless they are integrated with a control mechanism that limits their operation time). The use of such lighting shall help minimize impacts on reduced visibility of the night sky. Plans submitted to the Building and Safety Division for permits shall demonstrate compliance with this measure to the satisfaction of the Director of Community Development. 28. In accordance with measure VQ-3.3, all interior lighting in buildings without residents shall be turned off during non-operational evening hours, with the exception of lighting needed for security reasons. 29. In accordance with measure AQ-2.1, the applicant shall implement the following mitigation measures during all construction phases to reduce impacts associated with construction dust to the extent feasible, as determined by the City Engineer. These measures shall be incorporated into the construction documents describing procedures and specifications for contractors to follow. a. Water all active construction areas at least twice daily. b. Cover all trucks hauling soil, sand, and other loose materials to or from the Project Area or require all trucks to maintain at least two feet of freeboard. c. Pave, apply water three times daily, or apply (non-toxic) soil stabilizers on all unpaved access roads, parking areas and staging areas at construction sites. d. Sweep daily (with water sweepers) all paved access roads, parking areas and staging areas at construction sites. e. Sweep streets daily (with water sweepers) if visible soil material is carried onto adjacent public streets. f. Hydroseed or apply (non-toxic) soil stabilizers to inactive construction areas (previously graded areas inactive for ten days or more). g. Enclose, cover, water twice daily or apply (non-toxic) soil binders to exposed stockpiles (dirt, sand, etc.). h. Limit traffic speeds on unpaved roads to 15 mph. i. Install sandbags or other erosion control measures to prevent silt runoff to public roadways. j. Replant vegetation in distributed areas as quickly as possible. k. Suspend excavation and grading activities to the extent feasible when instantaneous wind gusts exceed 25 mph. I. Limit, to the extent feasible, the number of areas adjacent to residences subject to excavation, grading and other construction activity at any one time. 30. In accordance with measure AQ-3.1, the applicant shall employ measures as described within the Operational Air Emissions Plan in Exhibit B of the original PUD approval. 31. In accordance with measure BIO-5.1, prior to the beginning of tree removal or mass grading, between February 15 and August 15, including grading for major 5