Cerrudo Services replaced roofing material and installed new area drainage improvements to the housing units at Coast Guard Group Humboldt Bay. All layers of the existing shingles were removed down to the existing roof deck and new asphalt shingle roofing system installed. Dry rotted roof sheathing was replaced. Approximately 300 lineal feet of trench drain with three drainage inlets were installed. Asbestos was discovered in the existing shingles and required abatement.