The average noon duty salary at Castaic Union was $14,273 , which is 210 percent higher than the average salary for this job in California, and 210 percent higher than the national average for this job . Noon Duty salaries at Castaic Union typically range from $11,023 to $12,396 (25th to 75th percentile). The highest reported noon duty salary was $28,997. There are 24 employees at Castaic Union with the job title noon duty.