The expansion of the Chumash Indian Casino and Resort involved the staged construction of a temporary casino, the demolition of the existing casino, and the construction of a new permanent three-story casino, as well as two five-story parking structures, a four-story hotel and spa, a new Tribal Hall and Health Clinic, and infrastructure including over two miles of roadway improvements and utility installation, the bridges, and a wastewater treatment plant.
The first five-story parking structure provides 1,000 parking spaces. It is supported on a drilled, cast-in-place caisson foundation system, with a precast/prestressed concrete superstructure. The second five-story parking structure encompasses 500 parking spaces and utilizes a conventional continuous and spread footing foundation system, with a post-tensioned ductile moment frame concrete superstructure.
The new 190,000 square foot three-story casino utilizes a conventional continuous and spread footing foundation system, cast-in-place post-tensioned concrete suspended slabs, and a FEMA structural steel moment frame. The 80,800 square foot, four-story hotel and spa structure utilizes a conventional continuous and spread footing foundation system, with a post-tensioned ductile moment frame concrete superstructure. The wastewater treatment plant is constructed of cast-in-placed reinforced concrete on a raft foundation. Two of the bridges are of prefabricated structural steel, and one is a cast-in-place post-tensioned bridge with abutments founded on drilled caissons and a box girder bridge deck. The infrastructure improvements included roadway improvements, modifications and improvements to existing water, sewer, storm-drain, and high voltage power-utility systems, flood protection improvements, and landscaping.
Earth Systems has a long history of providing professional services for the Chumash Indian Casino and Resort. We provided all geotechnical services, materials testing, and special inspection for the project. The soils engineering investigations included subsurface exploration, laboratory analysis of samples, geotechnical engineering and geologic analysis, and development of recommendations for foundation and seismic design criteria, grading and sitework, pavement, and drainage around improvements. During the construction phase of the project, the Earth Systems team performed observation and testing of soils during grading, and special inspection of concrete, masonry, and steel.