This rate is quite low, considering Stephen's role as a Yard Supervisor involves supervising staff, managing inventory, and ensuring efficient logistics operations. In the US, a Yard Supervisor's salary can range from $40,000 to over $70,000 depending on experience, company, and location. Given the location of San Diego County, California, and the industry, a more realistic hourly rate for Stephen would be around $25-$35 per hour, but this estimate is on the lower end of the range. Typically, experienced professionals in similar roles can charge higher rates, around $40-$60 per hour, considering the skills and responsibilities involved.