Louisiana (LA) 3.1 Dredging Contractor Practice
Exam 2026 | V2.0 | 150 Advanced Questions &
Answers with Detailed Rationales | Complete Exam
Prep & Study Guide.
Table of Contents
Section Topic Questions
I Licensing, Classification & Legal Framework 1–15
II Dredging Equipment: Hydraulic Systems 16–30
III Dredging Equipment: Mechanical Systems & Vessels 31–45
IV Dredging Methods, Techniques & Project Planning 46–60
V Navigation Rules, Waterway Safety & Vessel Operations 61–75
VI Environmental Regulations, Permitting & Compliance 76–95
VII Sediment Management, Disposal & Beneficial Use 96–110
VIII Coastal Restoration & Habitat Enhancement 111–125
IX Safety, Emergency Procedures & OSHA Compliance 126–140
X Contract Administration, Bonds & Business Practices 141–150
,SECTION I: LICENSING, CLASSIFICATION & LEGAL FRAMEWORK
• Q1. According to the Louisiana State Licensing Board for Contractors (LSLBC), dredging is
officially defined as which of the following?
A. The excavation of dry land for the purpose of preparing foundations for commercial
structures
B. The dredging of waterways for navigation, erosion control, coastal restoration and
associated sediment removal, disposal, and relocation, including sludge removal from treatment
ponds using dredging technologies
C. The construction of marine vessels, floating platforms, and underwater pipelines for
commercial transport
D. The installation of submerged electrical transmission lines and fiber optic cable systems
across navigable waterways
CorreCt answer : B
Rationale: The LSLBC defines dredging as "the dredging of waterways for navigation, erosion
control, coastal restoration and associated sediment removal, disposal, and relocation. Also
includes sludge removal from treatment ponds using dredging technologies." Dredging is
officially classified as a subclassification of Heavy Construction.
• Q2. Under the Louisiana Contractors Licensing Law (La. R.S. Title 37, Chapter 24), what
monetary threshold triggers the requirement for a commercial contractor license?
A. $25,000 (labor only, excluding materials)
B. $50,000 (labor and materials combined) on property used for commercial purposes
C. $75,000 (labor and materials combined) on any property type
D. $100,000 (total contract value including all overhead and profit)
CorreCt answer : B
Rationale: A commercial contractor license is required for any project valued at $50,000 or
more (labor and materials combined) on property used for commercial purposes. This threshold
applies to dredging projects as a subclassification of Heavy Construction.
,• Q3. What is the minimum net worth requirement for a commercial contractor license
applicant in Louisiana?
A. $5,000
B. $7,500
C. $10,000
D. $25,000
CorreCt answer : C
Rationale: Applicants must demonstrate a net worth of at least $10,000 if they plan to perform
projects in the amount of $50,000 or more. All Commercial and Residential License applicants
must provide a financial statement that verifies this net worth.
• Q4. Which of the following accurately describes the three classes of dredging permits
established under Louisiana law?
A. Class I (federal waters), Class II (state waters), Class III (private waters)
B. Class A (commercial dredging or initial acquisition of fill sand for resale), Class B (not
specified in statute), Class C (private, noncommercial purposes)
C. Class 1 (maintenance dredging), Class 2 (capital dredging), Class 3 (environmental
dredging)
D. Class X (emergency dredging), Class Y (routine maintenance), Class Z (major capital
projects)
CorreCt answer : B
Rationale: Louisiana Revised Statutes 56:2011 establishes five classes of licenses. Class A applies
to commercial dredging or initial acquisition of fill sand or fill material with the specific intent to
offer such fill for resale. Class C applies to a person dredging or contracting for dredging of fill
sand or fill material for private, noncommercial purposes.
• Q5. What is the passing score and time limit for the Louisiana 3.1 Dredging Contractor
examination?
A. 65% passing score, 1.5 hours time limit, 40 questions
B. 70% passing score, 2 hours time limit, 50 questions
C. 75% passing score, 2.5 hours time limit, 60 questions
D. 70% passing score, 3 hours time limit, 75 questions
, CorreCt answer : B
Rationale: The 3.1 Dredging examination is a closed book examination with 50 multiple-choice
questions and a minimum passing score of 70%. Candidates have two hours to complete this
examination.
• Q6. What is the monetary threshold for residential construction requiring a license in
Louisiana?
A. $25,000
B. $50,000
C. $75,000
D. $100,000
CorreCt answer : C
Rationale: A residential construction license is required for residential projects exceeding
$75,000 (labor and materials). "Residential structure" means a building used primarily as a
residence or dwelling unit.
• Q7. According to LSLBC classification descriptions, which other subclassifications fall under
Heavy Construction alongside Dredging?
A. Building Construction, Residential Construction, and Home Improvement
B. Electrical Transmission Lines, Underground Storage Tanks, and Wharves, Docks, Harbor
Improvements and Terminals
C. Highway Construction, Bridge Construction, and Municipal Works
D. Mechanical Construction, Plumbing Construction, and Electrical Construction
CorreCt answer : B
Rationale: Heavy Construction includes subclassifications such as Dredging, Electrical
Transmission Lines, Underground Storage Tanks, and Wharves, Docks, Harbor Improvements
and Terminals. Wharves, Docks, Harbor Improvements and Terminals includes related dredging
and draglines for harbors and other construction in navigable waterways.
• Q8. If a contractor submits a bid of $45,000 for a commercial dredging project in Louisiana,
what is the licensing requirement?
Exam 2026 | V2.0 | 150 Advanced Questions &
Answers with Detailed Rationales | Complete Exam
Prep & Study Guide.
Table of Contents
Section Topic Questions
I Licensing, Classification & Legal Framework 1–15
II Dredging Equipment: Hydraulic Systems 16–30
III Dredging Equipment: Mechanical Systems & Vessels 31–45
IV Dredging Methods, Techniques & Project Planning 46–60
V Navigation Rules, Waterway Safety & Vessel Operations 61–75
VI Environmental Regulations, Permitting & Compliance 76–95
VII Sediment Management, Disposal & Beneficial Use 96–110
VIII Coastal Restoration & Habitat Enhancement 111–125
IX Safety, Emergency Procedures & OSHA Compliance 126–140
X Contract Administration, Bonds & Business Practices 141–150
,SECTION I: LICENSING, CLASSIFICATION & LEGAL FRAMEWORK
• Q1. According to the Louisiana State Licensing Board for Contractors (LSLBC), dredging is
officially defined as which of the following?
A. The excavation of dry land for the purpose of preparing foundations for commercial
structures
B. The dredging of waterways for navigation, erosion control, coastal restoration and
associated sediment removal, disposal, and relocation, including sludge removal from treatment
ponds using dredging technologies
C. The construction of marine vessels, floating platforms, and underwater pipelines for
commercial transport
D. The installation of submerged electrical transmission lines and fiber optic cable systems
across navigable waterways
CorreCt answer : B
Rationale: The LSLBC defines dredging as "the dredging of waterways for navigation, erosion
control, coastal restoration and associated sediment removal, disposal, and relocation. Also
includes sludge removal from treatment ponds using dredging technologies." Dredging is
officially classified as a subclassification of Heavy Construction.
• Q2. Under the Louisiana Contractors Licensing Law (La. R.S. Title 37, Chapter 24), what
monetary threshold triggers the requirement for a commercial contractor license?
A. $25,000 (labor only, excluding materials)
B. $50,000 (labor and materials combined) on property used for commercial purposes
C. $75,000 (labor and materials combined) on any property type
D. $100,000 (total contract value including all overhead and profit)
CorreCt answer : B
Rationale: A commercial contractor license is required for any project valued at $50,000 or
more (labor and materials combined) on property used for commercial purposes. This threshold
applies to dredging projects as a subclassification of Heavy Construction.
,• Q3. What is the minimum net worth requirement for a commercial contractor license
applicant in Louisiana?
A. $5,000
B. $7,500
C. $10,000
D. $25,000
CorreCt answer : C
Rationale: Applicants must demonstrate a net worth of at least $10,000 if they plan to perform
projects in the amount of $50,000 or more. All Commercial and Residential License applicants
must provide a financial statement that verifies this net worth.
• Q4. Which of the following accurately describes the three classes of dredging permits
established under Louisiana law?
A. Class I (federal waters), Class II (state waters), Class III (private waters)
B. Class A (commercial dredging or initial acquisition of fill sand for resale), Class B (not
specified in statute), Class C (private, noncommercial purposes)
C. Class 1 (maintenance dredging), Class 2 (capital dredging), Class 3 (environmental
dredging)
D. Class X (emergency dredging), Class Y (routine maintenance), Class Z (major capital
projects)
CorreCt answer : B
Rationale: Louisiana Revised Statutes 56:2011 establishes five classes of licenses. Class A applies
to commercial dredging or initial acquisition of fill sand or fill material with the specific intent to
offer such fill for resale. Class C applies to a person dredging or contracting for dredging of fill
sand or fill material for private, noncommercial purposes.
• Q5. What is the passing score and time limit for the Louisiana 3.1 Dredging Contractor
examination?
A. 65% passing score, 1.5 hours time limit, 40 questions
B. 70% passing score, 2 hours time limit, 50 questions
C. 75% passing score, 2.5 hours time limit, 60 questions
D. 70% passing score, 3 hours time limit, 75 questions
, CorreCt answer : B
Rationale: The 3.1 Dredging examination is a closed book examination with 50 multiple-choice
questions and a minimum passing score of 70%. Candidates have two hours to complete this
examination.
• Q6. What is the monetary threshold for residential construction requiring a license in
Louisiana?
A. $25,000
B. $50,000
C. $75,000
D. $100,000
CorreCt answer : C
Rationale: A residential construction license is required for residential projects exceeding
$75,000 (labor and materials). "Residential structure" means a building used primarily as a
residence or dwelling unit.
• Q7. According to LSLBC classification descriptions, which other subclassifications fall under
Heavy Construction alongside Dredging?
A. Building Construction, Residential Construction, and Home Improvement
B. Electrical Transmission Lines, Underground Storage Tanks, and Wharves, Docks, Harbor
Improvements and Terminals
C. Highway Construction, Bridge Construction, and Municipal Works
D. Mechanical Construction, Plumbing Construction, and Electrical Construction
CorreCt answer : B
Rationale: Heavy Construction includes subclassifications such as Dredging, Electrical
Transmission Lines, Underground Storage Tanks, and Wharves, Docks, Harbor Improvements
and Terminals. Wharves, Docks, Harbor Improvements and Terminals includes related dredging
and draglines for harbors and other construction in navigable waterways.
• Q8. If a contractor submits a bid of $45,000 for a commercial dredging project in Louisiana,
what is the licensing requirement?
