Based on the skills and experience listed, I've estimated Mark's hourly rate to be around $75. This is a relatively conservative estimate, considering the demand for operations professionals with leadership skills in the Las Vegas Metropolitan Area. However, without specific salary benchmarks or industry standards, this is a rough estimate. Typical hourly rates for operations managers in this region can range from $50 to $100, but this estimate is lower due to the lack of specific experience in areas like Six Sigma or management.