1 After individual lists are prepared, the class prepares a list of all of the pollutants and types of pollution that they have identified. 2  The items in the class list are sorted as to whether they are examples of point source pollution or non-point-source pollution. After individual lists are prepared, the class prepares a list of all of the pollutants and types of pollution that they have identified. 2  The items in the class list are sorted as to whether they are examples of point source pollution or non-point-source pollution.
How much does a Machine Operator I make? The median annual Machine Operator I salary is $31,632, as of March 31, 2017, with a range usually between $27,820-$36,741, however this can vary widely depending on a variety of factors.
Average and Median Earnings. As of May 2011, the Bureau of Labor Statistics estimates that about 41,070 crane and tower operators were employed in the United States. These workers earned an average wage of $24.06 an hour and $50,040 a year. The middle-earning 50 percent of crane operators reported wages of between $17.07 and $29.36 an hour, with annual salaries ranging from $35,510 to $61,060 per year.