Well Casing Extension
- Section 25-129-1 - Unlimited well driller contractor W-1
- Section 25-129-2 - Unlimited well driller W-2
- Section 25-129-3 - Limited non-water-supply contractor W-3
- Section 25-129-4 - Limited non-water-supply driller W-4
- Section 25-129-5 - Limited well casing extension contractor W-5
- Section 25-129-6 - Limited well casing extension journeyperson W-6
- Section 25-129-7 - Limited geothermal contractor W-7
- Section 25-129-8 - Limited geothermal driller W-8
- Section 25-129-9 - Limited direct exchange geothermal contractor W-9
- Section 25-129-10 - Limited direct exchange geothermal driller W-10
- Section 25-129-11 - Driller trainee