A well drilling contractor installs and repairs water wells and pumps by boring, drilling, excavating, casing, cementing and cleaning to provide a supply of uncontaminated water.
Authority cited: Sections 7008 and 7059, Reference: Sections 7058 and 7059 (Business and Professions Code)
Content of the Examination
The Well Drilling (C-57) Examination is divided into five major sections. These sections are:
1. Job planning and estimating (18%)
Site inspection
Equipment selection
Documentation
2. Drilling and boring (37%)
Potential for contamination
Equipment transport and use
Drill boring and lithology log
Completion of well construction
3. Pumping systems (18%)
Pump installation
Valve installation
Piping installation
Electrical control installation
4. Service and repair (9%)
Defective part identification
Defective system and component repair or replacement
5. Safety (18%)
Work site hazards
Public hazards
Tool and equipment operation and maintenance
*Percentages are approximate*
Sample Questions
The following questions are typical of the types of items that are on the examination. The correct answer is highlighted.
1. Which of the following types of well would use Teflon well casing?
Inclinometer
Ag production
Piezometer
Monitoring
2. Which of the following components lowers and hoists drilling tools in and out of the well?
Draw works
Hoisting clutch
Pinion gear
Cathead
3. When sizing a pump to system requirements, which of the following conditions will directly impact the pump horsepower rating?
Well depth
Pumping level
Well diameter
Static water level
*All questions are written and reviewed by licensed contractors who are actively working in the field*
Resources
Groundwater and Wells Second Edition, U.S. Filter/Johnson Screens.