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ARIZONA (AZ) A4 DRILLING PRACTICE EXAM
2026 COMPLETE (135) CURRENT TESTING
QUESTIONS AND CORRECT ANSWERS WITH
DETAILED RATIONALES.
DRILLING
Prepare for the Arizona (AZ) A4 Drilling Exam with this comprehensive
practice resource designed to reinforce key drilling concepts, safety
requirements, equipment knowledge, and state-specific licensing topics.
This document helps you review essential material, assess your
understanding, and identify areas that may require additional study
before the exam. Use it to strengthen your knowledge and build
confidence through focused, organized practice. An excellent companion
for successful Arizona A4 Drilling exam preparation.
MULTIPLE CHOICE.
SECTION 1: A-4 License Scope & ROC Regulations (Questions 1–
15)
Question 1: Under the Arizona A-4 Drilling classification (AAC R4-
9-102), licensees are permitted to perform all of the following
EXCEPT:
A. Abandoning wells
B. Constructing monitor wells
C. Piers and foundations erection
D. Repairing pumps and pumping equipment
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Correct answer: C. Piers and foundations erection
Rationale: A-4 covers drilling or boring wells (water, gas, oil),
constructing/repairing dry or monitor wells, rigs, substructures, and
pumps—but does not include piers and foundations, which falls
under the A-7 classification.
Question 2: Horizontal drilling under the A-4 classification
includes which of the following?
A. Installing oil surfacing
B. Horizontal boring for utility installation
C. Constructing swimming pools
D. Trenching
Correct answer: B. Horizontal boring for utility installation
Rationale: A-4 includes both horizontal and vertical drilling/boring;
horizontal boring is in scope, while surfacing, pools, and trenching
belong to other license classifications.
Question 3: The erection of rigs, derricks, and related
substructures is permitted under which license?
A. A-4
B. A-5
C. B-1
D. C-53
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Correct answer: A. A-4
Rationale: A-4 includes the erection of rigs, derricks, and
substructures as part of drilling operations; other classifications do
not authorize this work.
Question 4: Servicing and repairing pumps connected to drilled
wells falls under which Arizona license classification?
A. A-4 only
B. A-4 and C-53
C. C-53 only
D. B-1
Correct answer: A. A-4 only
Rationale: A-4 includes installation, service, and repair of pumps
and pumping equipment.
Question 5: Which well type is NOT covered under the A-4
Drilling license?
A. Water wells
B. Oil and gas wells
C. Septic system leach wells
D. Dry wells and monitor wells
Correct answer: C. Septic system leach wells
Rationale: A-4 covers wells for water, gas, oil, dry wells, and
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monitor wells; septic tank or leach system installation falls under
sewer & pipe laying (A-12) or septic system scopes.
Question 6: Which activity below is outside the A-4 scope but
within the A-5 classification?
A. Boring a test well
B. Constructing a monitor well
C. Compacting soil for an oil-surfaced road
D. Repairing pump systems
Correct answer: C. Compacting soil for an oil-surfaced road
Rationale: Soil compaction and oil surfacing are part of the A-5
Excavating, Grading and Oil Surfacing scope—not drilling operations
under A-4.
Question 7: What is the minimum experience required for an A-4
Drilling license in Arizona?
A. 2 years of verifiable full-time experience
B. 3 years of verifiable full-time experience
C. 4 years of verifiable full-time experience
D. 5 years of verifiable full-time experience
Correct answer: C. 4 years of verifiable full-time experience
Rationale: The Arizona Registrar of Contractors requires 4 years of
ARIZONA (AZ) A4 DRILLING PRACTICE EXAM
2026 COMPLETE (135) CURRENT TESTING
QUESTIONS AND CORRECT ANSWERS WITH
DETAILED RATIONALES.
DRILLING
Prepare for the Arizona (AZ) A4 Drilling Exam with this comprehensive
practice resource designed to reinforce key drilling concepts, safety
requirements, equipment knowledge, and state-specific licensing topics.
This document helps you review essential material, assess your
understanding, and identify areas that may require additional study
before the exam. Use it to strengthen your knowledge and build
confidence through focused, organized practice. An excellent companion
for successful Arizona A4 Drilling exam preparation.
MULTIPLE CHOICE.
SECTION 1: A-4 License Scope & ROC Regulations (Questions 1–
15)
Question 1: Under the Arizona A-4 Drilling classification (AAC R4-
9-102), licensees are permitted to perform all of the following
EXCEPT:
A. Abandoning wells
B. Constructing monitor wells
C. Piers and foundations erection
D. Repairing pumps and pumping equipment
, Page 2 of 63
Correct answer: C. Piers and foundations erection
Rationale: A-4 covers drilling or boring wells (water, gas, oil),
constructing/repairing dry or monitor wells, rigs, substructures, and
pumps—but does not include piers and foundations, which falls
under the A-7 classification.
Question 2: Horizontal drilling under the A-4 classification
includes which of the following?
A. Installing oil surfacing
B. Horizontal boring for utility installation
C. Constructing swimming pools
D. Trenching
Correct answer: B. Horizontal boring for utility installation
Rationale: A-4 includes both horizontal and vertical drilling/boring;
horizontal boring is in scope, while surfacing, pools, and trenching
belong to other license classifications.
Question 3: The erection of rigs, derricks, and related
substructures is permitted under which license?
A. A-4
B. A-5
C. B-1
D. C-53
, Page 3 of 63
Correct answer: A. A-4
Rationale: A-4 includes the erection of rigs, derricks, and
substructures as part of drilling operations; other classifications do
not authorize this work.
Question 4: Servicing and repairing pumps connected to drilled
wells falls under which Arizona license classification?
A. A-4 only
B. A-4 and C-53
C. C-53 only
D. B-1
Correct answer: A. A-4 only
Rationale: A-4 includes installation, service, and repair of pumps
and pumping equipment.
Question 5: Which well type is NOT covered under the A-4
Drilling license?
A. Water wells
B. Oil and gas wells
C. Septic system leach wells
D. Dry wells and monitor wells
Correct answer: C. Septic system leach wells
Rationale: A-4 covers wells for water, gas, oil, dry wells, and
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monitor wells; septic tank or leach system installation falls under
sewer & pipe laying (A-12) or septic system scopes.
Question 6: Which activity below is outside the A-4 scope but
within the A-5 classification?
A. Boring a test well
B. Constructing a monitor well
C. Compacting soil for an oil-surfaced road
D. Repairing pump systems
Correct answer: C. Compacting soil for an oil-surfaced road
Rationale: Soil compaction and oil surfacing are part of the A-5
Excavating, Grading and Oil Surfacing scope—not drilling operations
under A-4.
Question 7: What is the minimum experience required for an A-4
Drilling license in Arizona?
A. 2 years of verifiable full-time experience
B. 3 years of verifiable full-time experience
C. 4 years of verifiable full-time experience
D. 5 years of verifiable full-time experience
Correct answer: C. 4 years of verifiable full-time experience
Rationale: The Arizona Registrar of Contractors requires 4 years of
