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Arizona Excavating Contractor Exam Questions | 100% Correct
Answers with Detailed Rationales (2026/2027 Edition)
Arizona Excavating Contractor Licensing Examination
==============================
SECTION 1: Arizona Contractor Licensing Laws and Regulations
Question 1
Under the Arizona Registrar of Contractors (ROC), an excavating contractor performing
trenching and backfill for utility installation on commercial projects must typically hold
which license classification?
A. A-9 (Swimming Pools)
B. R-17 (Excavating, Grading and Oil Surfacing)
C. C-17 (Excavating, Grading and Oil Surfacing)
D. B-3 (General Residential Remodeling)
Correct Answer: C
Rationale: The C-17 classification covers excavating, grading, and oil surfacing work in
Arizona. This classification authorizes the licensee to perform excavation, trenching,
grading, and related earthwork on commercial and residential projects, including utility
trenching and backfill operations.
,Question 2
According to A.R.S. Title 32, Chapter 10, what is the minimum required contractor bond
amount for a licensed excavating contractor operating under the C-17 classification?
A. $2,500
B. $5,000
C. $7,500
D. $15,000
Correct Answer: C
Rationale: Arizona Revised Statutes Title 32, Chapter 10 requires a $7,500 contractor
bond for licensees holding a C-17 (Excavating, Grading and Oil Surfacing) classification.
This bond serves to protect consumers and ensure financial responsibility for the
contractor's operations.
Question 3
An Arizona excavating contractor discovers that a project requires both excavation and
the installation of underground electrical conduit. Under ROC regulations, which
statement is most accurate?
A. The C-17 contractor may perform all work, including electrical conduit installation, as
it is incidental to excavation.
,B. The C-17 contractor may excavate the trench but must subcontract the electrical
conduit installation to a properly licensed electrician.
C. The C-17 contractor may install the conduit if the conduit is PVC and less than 2
inches in diameter.
D. The C-17 contractor must upgrade to a B-1 General Commercial license to perform
any portion of the work.
Correct Answer: B
Rationale: Under Arizona ROC regulations, a C-17 excavating contractor is authorized to
perform excavation, grading, and related earthwork but is not licensed to install
electrical systems. Electrical conduit installation falls under the C-11 (Electrical) or
equivalent classification, requiring the excavating contractor to subcontract this portion
to a properly licensed electrician.
Question 4
Which of the following actions by an Arizona excavating contractor would most likely
result in a violation of A.R.S. Title 32, Chapter 10, and ROC disciplinary action?
A. Performing excavation work under a C-17 license without maintaining the required
statutory bond.
B. Using a backhoe with an expired annual equipment inspection sticker.
C. Failing to post OSHA Form 300 in a company office with fewer than 11 employees.
D. Subcontracting grading work to another C-17 licensed contractor on a large
commercial site.
, Correct Answer: A
Rationale: A.R.S. Title 32, Chapter 10 mandates that licensed contractors maintain the
required bond as a condition of licensure. Failure to maintain the statutory bond is a
direct violation of licensing law and subjects the contractor to disciplinary action by the
Arizona Registrar of Contractors. Equipment inspection stickers and OSHA posting
requirements, while important, do not constitute ROC licensing violations.
Question 5
An excavating contractor in Arizona is bidding on a project that involves both mass
grading for a commercial pad and the construction of a private road with asphalt
paving. Under ROC licensing requirements, which approach is compliant?
A. The C-17 license covers mass grading, but asphalt paving of a private road requires
an R-1 or C-1 (Highways and Streets) license.
B. The C-17 license authorizes both the mass grading and the asphalt paving of private
roads without limitation.
C. The contractor must hold both a C-17 and a B-1 General Commercial license to
perform any portion of the project.
D. Asphalt paving is considered incidental to grading and is always covered under the
C-17 classification.
Correct Answer: A
Rationale: The C-17 classification covers excavating, grading, and oil surfacing (chip
seal), but asphalt paving of roads typically falls under the R-1 or C-1 (Highways and
Arizona Excavating Contractor Exam Questions | 100% Correct
Answers with Detailed Rationales (2026/2027 Edition)
Arizona Excavating Contractor Licensing Examination
==============================
SECTION 1: Arizona Contractor Licensing Laws and Regulations
Question 1
Under the Arizona Registrar of Contractors (ROC), an excavating contractor performing
trenching and backfill for utility installation on commercial projects must typically hold
which license classification?
A. A-9 (Swimming Pools)
B. R-17 (Excavating, Grading and Oil Surfacing)
C. C-17 (Excavating, Grading and Oil Surfacing)
D. B-3 (General Residential Remodeling)
Correct Answer: C
Rationale: The C-17 classification covers excavating, grading, and oil surfacing work in
Arizona. This classification authorizes the licensee to perform excavation, trenching,
grading, and related earthwork on commercial and residential projects, including utility
trenching and backfill operations.
,Question 2
According to A.R.S. Title 32, Chapter 10, what is the minimum required contractor bond
amount for a licensed excavating contractor operating under the C-17 classification?
A. $2,500
B. $5,000
C. $7,500
D. $15,000
Correct Answer: C
Rationale: Arizona Revised Statutes Title 32, Chapter 10 requires a $7,500 contractor
bond for licensees holding a C-17 (Excavating, Grading and Oil Surfacing) classification.
This bond serves to protect consumers and ensure financial responsibility for the
contractor's operations.
Question 3
An Arizona excavating contractor discovers that a project requires both excavation and
the installation of underground electrical conduit. Under ROC regulations, which
statement is most accurate?
A. The C-17 contractor may perform all work, including electrical conduit installation, as
it is incidental to excavation.
,B. The C-17 contractor may excavate the trench but must subcontract the electrical
conduit installation to a properly licensed electrician.
C. The C-17 contractor may install the conduit if the conduit is PVC and less than 2
inches in diameter.
D. The C-17 contractor must upgrade to a B-1 General Commercial license to perform
any portion of the work.
Correct Answer: B
Rationale: Under Arizona ROC regulations, a C-17 excavating contractor is authorized to
perform excavation, grading, and related earthwork but is not licensed to install
electrical systems. Electrical conduit installation falls under the C-11 (Electrical) or
equivalent classification, requiring the excavating contractor to subcontract this portion
to a properly licensed electrician.
Question 4
Which of the following actions by an Arizona excavating contractor would most likely
result in a violation of A.R.S. Title 32, Chapter 10, and ROC disciplinary action?
A. Performing excavation work under a C-17 license without maintaining the required
statutory bond.
B. Using a backhoe with an expired annual equipment inspection sticker.
C. Failing to post OSHA Form 300 in a company office with fewer than 11 employees.
D. Subcontracting grading work to another C-17 licensed contractor on a large
commercial site.
, Correct Answer: A
Rationale: A.R.S. Title 32, Chapter 10 mandates that licensed contractors maintain the
required bond as a condition of licensure. Failure to maintain the statutory bond is a
direct violation of licensing law and subjects the contractor to disciplinary action by the
Arizona Registrar of Contractors. Equipment inspection stickers and OSHA posting
requirements, while important, do not constitute ROC licensing violations.
Question 5
An excavating contractor in Arizona is bidding on a project that involves both mass
grading for a commercial pad and the construction of a private road with asphalt
paving. Under ROC licensing requirements, which approach is compliant?
A. The C-17 license covers mass grading, but asphalt paving of a private road requires
an R-1 or C-1 (Highways and Streets) license.
B. The C-17 license authorizes both the mass grading and the asphalt paving of private
roads without limitation.
C. The contractor must hold both a C-17 and a B-1 General Commercial license to
perform any portion of the project.
D. Asphalt paving is considered incidental to grading and is always covered under the
C-17 classification.
Correct Answer: A
Rationale: The C-17 classification covers excavating, grading, and oil surfacing (chip
seal), but asphalt paving of roads typically falls under the R-1 or C-1 (Highways and
