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The Harrah's San Diego project scope 
          included $165M of work in 12 months:

*casino expansion:  existing 4 story hotel 
and casino expanded while open for business
*new 21 story hotel on driven piles and pile caps
*new 4 story parking structure, pool & poolside bar
*new wastewater treatment plant
*100 acres of underground utilities, paving & grading
The Architect was Paul Steelman of Las Vegas, and I worked as Mechanical / Electrical / Plumbing & Pipefitting Superintendent and Project Engineer for the General Contractor, W.E. O'Neil.  In addition to the challenge of 12 hour days, 6 days per week, we performed all work while the existing 4 story hotel and casino were operational, with revenues during construction of $300 million per year.  The structure is poured in place concrete, a choice made primarily because of the vibration absorption concrete offers in this seismic zone of Southern California.  During the project we experienced a 5.3 magnitude earthquake off the coast of San Diego with 2 tower cranes operating.