What Does the Arizona A-4 Drilling License Cover?

The Arizona A-4 Drilling classification covers a wide range of drilling and well-related work.

The current scope includes:

• Horizontal drilling.
• Vertical drilling.
• Boring.
• Constructing wells.
• Deepening wells.
• Repairing wells.
• Abandoning wells.
• Exploring for water.
• Exploring for gas.
• Exploring for oil.
• Constructing dry wells.
• Constructing monitoring wells.
• Erecting rigs and derricks.
• Constructing related substructures.
• Installing pumps and pumping equipment.
• Servicing and repairing pumps and pumping equipment.

Step 1: Confirm That A-4 Is the Classification You Need

Before scheduling an exam, confirm that A-4 matches the work your company plans to perform.

Arizona currently requires four years of qualifying hands-on and/or managerial experience for the A-4 Drilling classification.

The classification also lists the Arizona Statutes and Rules Exam and the A-4 trade examination as required unless the Arizona Registrar of Contractors approves an applicable waiver.

This is important because passing PSI is only one part of the licensing process. You still need to meet the ROC's qualifying requirements.

Review the Arizona Registrar of Contractors classification requirements before starting your application.

Step 2: Know the A-4 Exam Numbers

A short exam can be unforgiving. You do not have 100 questions where a few mistakes disappear into the crowd.

Prepare to answer straightforward trade questions quickly so you have enough time for questions requiring a deeper reference search.

Step 3: Learn the Official A-4 Exam Breakdown

PSI divides the current A-4 Drilling exam into eight subject areas.

Drilling Methods and Materials is the biggest section, but notice how evenly the rest of the exam is spread out.

You cannot safely ignore one of the three-question topics. On a 30-question exam, three questions represent 10% of the entire test.

Step 4: Make Drilling Methods and Materials Your First Priority

Drilling Methods and Materials contains seven questions, more than any other category.

Build a strong understanding of common drilling methods and the conditions that affect the choice of equipment and materials.

Review subjects such as:

• Drilling methods.
• Borehole construction.
• Formation conditions.
• Drilling equipment.
• Drilling fluids.
• Well construction materials.
• Hole stability.
• Development practices.
• Monitoring well construction.
• Common drilling terminology.

Avoid studying methods as isolated names. Understand why a method may work better in one formation or project condition than another.

The exam may include questions based on trade knowledge and general industry practices, so knowing where the answer lives in a book is helpful, but understanding the work is still important.

Step 5: Study Pumps and Pumping Equipment

Pumps and Pumping Equipment contributes four questions.

Review:

• Common well pumps.
• Pump selection concepts.
• Pump installation.
• Pump servicing.
• Pumping equipment.
• Water-system components.
• Pressure and flow concepts.
• System troubleshooting.

Remember that Arizona's A-4 scope specifically includes installing, servicing, and repairing pumps and pumping equipment.

Do not treat pumps like a side topic added to the end of a drilling exam. Four questions make them one of the larger sections.

Step 6: Learn Casings and Screens

Casings and Screenings contributes three questions.

Review how well casing and screens function inside a properly constructed well.

Study:

• Casing materials.
• Casing installation.
• Screen selection.
• Screen placement.
• Openings and slots.
• Formation considerations.
• Filter and gravel-pack concepts.
• Well development.

Try to connect each component to its purpose. Casing, screens, seals, and pumps are not separate trivia questions in the field. They are parts of one system.

Step 7: Understand Grouting and Sealing

Grouting and Sealing accounts for three questions.

Review the reasons wells and boreholes need proper seals, including protection against unwanted water movement and contamination.

Study:

• Grout materials.
• Grout placement.
• Annular seals.
• Sealing procedures.
• Contamination prevention.
• Monitoring-well practices.
• Well abandonment sealing.

Pay attention to the sequence of work. A question may test not only what material is used but when and how it should be placed.

Step 8: Review Water Quality and Testing

Water Quality and Testing provides another three questions.

Candidates should understand the basic purpose of well testing and water-quality evaluation.

Review:

• Water sampling.
• Well testing.
• Yield concepts.
• Water-level measurements.
• Contamination concerns.
• Testing procedures.
• Well development and performance.

The goal is not simply to make a hole that contains water. A properly completed well has to perform as intended while protecting the groundwater resource.

Step 9: Study Rigs, Derricks, and Rigging

Rigs and Derricks contributes three questions and has its own technical reference on the PSI list.

Study:

• Rig setup.
• Derrick components.
• Hoisting.
• Lifting practices.
• Wire rope concepts.
• Slings.
• Rigging hardware.
• Load considerations.
• Equipment inspection.
• Safe lifting practices.

Rigging questions can depend on terminology, equipment condition, and safe operating practices.

Heavy equipment has a wonderful ability to turn small mistakes into large meetings, so take this section seriously.

Step 10: Know Well Abandonment Procedures

Abandonment accounts for three questions.

Proper well abandonment is an important part of groundwater protection. An unused or improperly abandoned well can become a pathway for contamination.

Review:

• When abandonment is required.
• Removal or treatment of well components.
• Sealing materials.
• Placement methods.
• Preventing vertical water movement.
• Monitoring-well abandonment.
• Documentation and general procedures.

Do not think of abandonment as simply filling a hole. The objective is to properly close the well and protect subsurface conditions.

Step 11: Do Not Give Away the OSHA Safety Questions

OSHA Safety accounts for four questions, tying Pumps and Pumping Equipment for the second-largest category.

Review OSHA construction topics that relate to drilling operations, including:

• Personal protective equipment.
• Equipment safety.
• Electrical hazards.
• Material handling.
• Hoisting and rigging.
• Excavation hazards.
• Fall protection.
• Ladders.
• Housekeeping.
• Jobsite access.

OSHA questions can involve exact requirements. Learn how to use the index and locate the rule rather than relying only on memory.

Step 12: Get the Correct A-4 Reference Books

PSI's current A-4 outline identifies several references that are allowed inside the examination center.

They include:

• Code of Federal Regulations, 29 CFR Part 1926, OSHA, with the latest available amendments, or the applicable PSI OSHA selections.
• Groundwater & Wells, 3rd Edition, edited by Robert Sterrett.
• Handbook of Rigging: Lifting, Hoisting, and Scaffolding for Construction and Industrial Operations, 5th Edition.
• Handbook of Suggested Practices for the Design and Installation of Ground Water Monitoring Wells.
• Manual of Water Well Construction Practices, 2nd Edition, 1998.
• Water Systems Handbook, 12th Edition.

Browse the Arizona contractor exam books and preparation resources from Contractor Exam Preps while building your A-4 reference set.

Step 13: Learn Which Reference Handles Which Topic

Six references can become a lot of paper when you are watching a 75-minute timer.

Build a simple mental map before exam day:

• OSHA: construction safety requirements.
• Groundwater & Wells: drilling, well design, construction, groundwater, testing, and related technical information.
• Handbook of Rigging: lifting, hoisting, rigging, derricks, and related equipment.
• Monitoring Wells Handbook: monitoring-well design and installation practices.
• Manual of Water Well Construction Practices: well construction methods and recommended practices.
• Water Systems Handbook: pumps, pumping equipment, and water-system concepts.

During practice, identify the likely book before touching the reference.

Knowing where to look is often almost as useful as knowing the answer.

Step 14: Prepare the Books Correctly

PSI allows approved A-4 references to be prepared before the examination.

References may be:

• Highlighted before the exam.
• Underlined before the exam.
• Annotated before the exam.
• Indexed before the exam.
• Tabbed with permanent tabs.

PSI defines permanent tabs as tabs that would tear the page if removed.

Temporary tabs such as Post-it notes and removable markers are not permitted.

Candidates may not bring unauthorized loose or attached papers with their approved references, and they may not continue writing, highlighting, underlining, or indexing the books during the exam.

Downloaded references may be brought into the examination center when properly bound, such as spiral bound or hole punched and placed in a binder.

Step 15: Practice With an Approved-Style Calculator

PSI allows a silent, nonprinting, non-programmable calculator in the A-4 examination center.

Use the same type while practicing.

Depending on the question, drilling work can involve measurements, depth, volume, flow, pumping, or other practical calculations.

Your calculator should feel boring by exam day. Boring is good. The exam already has enough drilling.

Step 16: Use a Four-Week A-4 Study Plan

Adjust the schedule according to your experience. A drilling contractor with years of well-construction experience may need extra rigging or OSHA review. Someone who works mainly with pumps may need more time on monitoring wells and abandonment.

Step 17: Practice Under the Real 75-Minute Limit

At least some of your practice sessions should match the actual exam.

Set a timer for 75 minutes and complete 30 questions.

A simple approach is:

1. First pass: Answer questions you know immediately or can research quickly.
2. Second pass: Return to longer reference searches and calculations.
3. Final check: Review marked questions before time expires.

PSI may also include a small number of experimental questions that do not affect your score but still use exam time.

That makes pacing important. One difficult question should not receive its own drilling permit.

Step 18: Watch the Wording of Every Question

Read carefully before selecting an answer.

Pay special attention to words such as:

• MINIMUM
• MAXIMUM
• FIRST
• MOST
• LEAST
• NOT
• EXCEPT
• REQUIRED
• PROHIBITED

Several answer choices may sound reasonable. Your job is to answer the exact question being asked, not the question you expected to see.

Step 19: Know the Current PSI Retake Rules

If you do not pass the examination, current PSI rules require a 30-day waiting period before retaking the failed exam.

Candidates currently receive three attempts to pass each examination. After three failed attempts, a 90-day waiting period applies before another attempt.

Use any diagnostic information from an unsuccessful attempt to change your preparation.

If rigs and derricks caused trouble, study rigs and derricks. Reading your favorite pump chapter again because you already understand it may feel productive, but it is mostly recreational studying.

Step 20: Remember the Arizona Statutes and Rules Exam

A-4 applicants may also need to complete the Arizona Statutes and Rules Exam, or SRE.

The SRE is an online computer-based training course and examination maintained by the Arizona Registrar of Contractors. It focuses on Arizona contractor statutes and rules rather than drilling trade knowledge.

Current PSI information lists the SRE at $61 and one trade examination at $66.

Exam waivers may apply in specific situations, so verify your exact requirements with the Arizona ROC.

Review the Arizona contractor licensing process before applying.

Step 21: Passing the Exam Is Only Part of Getting Licensed

Passing A-4 is an important milestone, but PSI does not issue your contractor license.

The complete licensing process can involve:

• Selecting the correct A-4 classification.
• Designating the qualifying party.
• Documenting the required qualifying experience.
• Completing the SRE when required.
• Passing the A-4 trade examination.
• Completing required background checks.
• Obtaining the appropriate contractor license bond.
• Providing required identification.
• Providing business information.
• Submitting the Arizona ROC license application.
• Paying applicable licensing fees.

Current PSI instructions state that candidates should complete all licensing requirements and submit the completed application and original score report to the Arizona ROC within two years of passing the required examination.

A Simple Arizona A-4 Drilling Exam Roadmap

1. Confirm A-4 matches the drilling work you plan to perform.
2. Verify the current four-year experience requirement.
3. Determine whether an examination waiver applies.
4. Complete or plan for the Arizona SRE.
5. Review the current PSI A-4 content outline.
6. Obtain all approved reference materials.
7. Prepare the books using permanent tabs and highlighting.
8. Make Drilling Methods and Materials your largest study category.
9. Study pumps and pumping equipment carefully.
10. Review casings, screens, grouting, and sealing.
11. Study water quality and testing.
12. Review rigs, derricks, lifting, and rigging.
13. Learn proper well-abandonment concepts.
14. Study OSHA construction safety.
15. Learn which reference answers each type of question.
16. Practice with an approved-style calculator.
17. Complete full 75-minute practice exams.
18. Review every missed question and locate the supporting reference.
19. Confirm PSI test-day rules before the appointment.
20. Complete the Arizona ROC licensing process after satisfying the exam requirements.

Arizona A-4 Drilling Contractor Exam Prep Resources

The A-4 exam is shorter than many Arizona contractor tests, but its 30 questions cover a wide range of technical subjects.

Drilling Methods and Materials is the largest category. Pumps and OSHA each contribute four questions. Casings, sealing, testing, rigs, and abandonment each supply another three.

That means successful preparation needs to be balanced. You cannot rely on one strong subject to carry the whole examination.

When you are ready to prepare, explore the Arizona A-4 contractor exam preparation resources from Contractor Exam Preps. Strong drilling knowledge, properly organized references, fast book navigation, and timed practice can make the Arizona A-4 Drilling Contractor exam much easier to manage.