LOUISIANA (LA) 3.1 DREDGING CONTRACTOR PRACTICE EXAM
2026
150 Questions & Answers with Detailed Rationales | Complete Exam
Prep & Study Guide
TABLE OF CONTENTS
Section Topic Questions
I Exam Format & Licensing Requirements 1–10
II Louisiana State Regulations & Statutes 11–25
Federal Permitting & Environmental
III 26–40
Compliance
IV Coastal Use Permits & LDNR Requirements 41–50
V Dredging Equipment & Operations 51–70
VI Hydraulic Dredging & Slurry Transport 71–85
Mechanical Dredging & Specialized
VII 86–95
Equipment
VIII Dredged Material Disposal & Beneficial Use 96–105
IX Safety Standards (OSHA & Marine Safety) 106–120
X Project Estimation & Cost Management 121–130
XI Surveying, Navigation & Site Control 131–140
XII Environmental Protection & Restoration 141–150
,SECTION I: EXAM FORMAT & LICENSING REQUIREMENTS
🟢 Question 1
The Louisiana 3.1 Dredging Contractor licensing examination is administered as which type of
examination?
A) Open-book with 30 multiple-choice questions and a 1-hour time limit
🔴🔴 B) Closed-book with 50 multiple-choice questions and a 2-hour time limit
C) Open-book with 100 multiple-choice questions and a 3-hour time limit
D) Closed-book with 75 multiple-choice questions and a 90-minute time limit
Rationale: The Louisiana 3.1 Dredging examination is a closed-book examination consisting of 50
multiple-choice questions with a minimum passing score of 70%. Candidates are given two hours to
complete the examination.
🟢 Question 2
What is the minimum passing score required for the Louisiana 3.1 Dredging Contractor examination?
A) 60%
🔴🔴 B) 70%
C) 75%
D) 80%
Rationale: The Louisiana State Licensing Board for Contractors (LSLBC) requires a minimum passing
score of 70% on the 3.1 Dredging examination.
🟢 Question 3
In addition to the trade-specific dredging exam, Louisiana contractors must also pass which other
examination to obtain licensure?
A) A federal safety certification examination
B) A coastal zone management examination
🔴🔴 C) A Business and Law examination
D) An environmental impact assessment examination
Rationale: Louisiana requires two examinations for contractor licensure: a Business and Law exam and
a trade-specific exam for each classification sought. The Business and Law exam is open-book and
based on the Contractors Guide to Business, Law and Project Management.
,🟢 Question 4
How many questions are on the Louisiana Business and Law examination, and what is the time limit?
A) 30 questions, 1 hour
🔴🔴 B) 50 questions, 4 hours
C) 75 questions, 2.5 hours
D) 100 questions, 3 hours
Rationale: The Business and Law examination consists of 50 questions with a 4-hour time limit. It is
administered online as an open-book examination.
🟢 Question 5
Which Louisiana state agency is responsible for licensing dredging contractors?
A) Louisiana Department of Environmental Quality (LDEQ)
B) Louisiana Department of Natural Resources (LDNR)
🔴🔴 C) Louisiana State Licensing Board for Contractors (LSLBC)
D) Louisiana Wildlife and Fisheries Commission (LWFC)
Rationale: The Louisiana State Licensing Board for Contractors (LSLBC) is the governing body
responsible for contractor licensing, including the 3.1 Dredging classification.
🟢 Question 6
A contractor who currently holds a Master Plumber License from the State Plumbing Board of
Louisiana is:
A) Required to pass both the Business and Law and trade exams for dredging
B) Required to pass only the trade-specific dredging exam
🔴🔴 C) Exempt from additional examination requirements for that license classification
D) Prohibited from obtaining a dredging contractor license
Rationale: According to LSLBC regulations, any plumbing contractor who holds a Master Plumber
License from the State Plumbing Board of Louisiana is exempt from any requirement for passage of an
additional examination in that license classification and may bid and perform plumbing work
statewide.
🟢 Question 7
The Louisiana 3.1 Dredging examination covers all of the following content areas EXCEPT:
A) Estimating and project costing
B) Dredging vessels and equipment operation
, 🔴🔴 C) Residential building code compliance
D) Permitting and disposal procedures
Rationale: The 3.1 Dredging examination covers estimating, dredging vessels and equipment and their
proper operation, safety, navigation, permitting, the process of dredging, and disposal. Residential
building code compliance is not part of this trade-specific examination.
🟢 Question 8
What is the duration of the Louisiana 3.1 Dredging Contractor examination?
A) 1 hour
🔴🔴 B) 2 hours
C) 2.5 hours
D) 3 hours
Rationale: Candidates have two hours to complete the 50-question closed-book 3.1 Dredging
examination.
🟢 Question 9
Which of the following best describes the format of the Louisiana 3.1 Dredging examination?
A) Essay and short-answer questions
B) True/false and matching questions
🔴🔴 C) Multiple-choice questions only
D) Practical hands-on demonstration
Rationale: The 3.1 Dredging examination consists entirely of multiple-choice questions.
🟢 Question 10
A contractor seeking licensure in the 3.1 Dredging classification must apply to the LSLBC using:
A) An online portal only available to existing license holders
B) A paper application submitted to the LDNR
🔴🔴 C) A form adopted by the board as specified in the application requirements
D) A federal permit application through the USACE
Rationale: Applicants desiring to perform work must make application to the board on a form adopted
by the board. The LSLBC provides application forms and processes through their contractor portal.
2026
150 Questions & Answers with Detailed Rationales | Complete Exam
Prep & Study Guide
TABLE OF CONTENTS
Section Topic Questions
I Exam Format & Licensing Requirements 1–10
II Louisiana State Regulations & Statutes 11–25
Federal Permitting & Environmental
III 26–40
Compliance
IV Coastal Use Permits & LDNR Requirements 41–50
V Dredging Equipment & Operations 51–70
VI Hydraulic Dredging & Slurry Transport 71–85
Mechanical Dredging & Specialized
VII 86–95
Equipment
VIII Dredged Material Disposal & Beneficial Use 96–105
IX Safety Standards (OSHA & Marine Safety) 106–120
X Project Estimation & Cost Management 121–130
XI Surveying, Navigation & Site Control 131–140
XII Environmental Protection & Restoration 141–150
,SECTION I: EXAM FORMAT & LICENSING REQUIREMENTS
🟢 Question 1
The Louisiana 3.1 Dredging Contractor licensing examination is administered as which type of
examination?
A) Open-book with 30 multiple-choice questions and a 1-hour time limit
🔴🔴 B) Closed-book with 50 multiple-choice questions and a 2-hour time limit
C) Open-book with 100 multiple-choice questions and a 3-hour time limit
D) Closed-book with 75 multiple-choice questions and a 90-minute time limit
Rationale: The Louisiana 3.1 Dredging examination is a closed-book examination consisting of 50
multiple-choice questions with a minimum passing score of 70%. Candidates are given two hours to
complete the examination.
🟢 Question 2
What is the minimum passing score required for the Louisiana 3.1 Dredging Contractor examination?
A) 60%
🔴🔴 B) 70%
C) 75%
D) 80%
Rationale: The Louisiana State Licensing Board for Contractors (LSLBC) requires a minimum passing
score of 70% on the 3.1 Dredging examination.
🟢 Question 3
In addition to the trade-specific dredging exam, Louisiana contractors must also pass which other
examination to obtain licensure?
A) A federal safety certification examination
B) A coastal zone management examination
🔴🔴 C) A Business and Law examination
D) An environmental impact assessment examination
Rationale: Louisiana requires two examinations for contractor licensure: a Business and Law exam and
a trade-specific exam for each classification sought. The Business and Law exam is open-book and
based on the Contractors Guide to Business, Law and Project Management.
,🟢 Question 4
How many questions are on the Louisiana Business and Law examination, and what is the time limit?
A) 30 questions, 1 hour
🔴🔴 B) 50 questions, 4 hours
C) 75 questions, 2.5 hours
D) 100 questions, 3 hours
Rationale: The Business and Law examination consists of 50 questions with a 4-hour time limit. It is
administered online as an open-book examination.
🟢 Question 5
Which Louisiana state agency is responsible for licensing dredging contractors?
A) Louisiana Department of Environmental Quality (LDEQ)
B) Louisiana Department of Natural Resources (LDNR)
🔴🔴 C) Louisiana State Licensing Board for Contractors (LSLBC)
D) Louisiana Wildlife and Fisheries Commission (LWFC)
Rationale: The Louisiana State Licensing Board for Contractors (LSLBC) is the governing body
responsible for contractor licensing, including the 3.1 Dredging classification.
🟢 Question 6
A contractor who currently holds a Master Plumber License from the State Plumbing Board of
Louisiana is:
A) Required to pass both the Business and Law and trade exams for dredging
B) Required to pass only the trade-specific dredging exam
🔴🔴 C) Exempt from additional examination requirements for that license classification
D) Prohibited from obtaining a dredging contractor license
Rationale: According to LSLBC regulations, any plumbing contractor who holds a Master Plumber
License from the State Plumbing Board of Louisiana is exempt from any requirement for passage of an
additional examination in that license classification and may bid and perform plumbing work
statewide.
🟢 Question 7
The Louisiana 3.1 Dredging examination covers all of the following content areas EXCEPT:
A) Estimating and project costing
B) Dredging vessels and equipment operation
, 🔴🔴 C) Residential building code compliance
D) Permitting and disposal procedures
Rationale: The 3.1 Dredging examination covers estimating, dredging vessels and equipment and their
proper operation, safety, navigation, permitting, the process of dredging, and disposal. Residential
building code compliance is not part of this trade-specific examination.
🟢 Question 8
What is the duration of the Louisiana 3.1 Dredging Contractor examination?
A) 1 hour
🔴🔴 B) 2 hours
C) 2.5 hours
D) 3 hours
Rationale: Candidates have two hours to complete the 50-question closed-book 3.1 Dredging
examination.
🟢 Question 9
Which of the following best describes the format of the Louisiana 3.1 Dredging examination?
A) Essay and short-answer questions
B) True/false and matching questions
🔴🔴 C) Multiple-choice questions only
D) Practical hands-on demonstration
Rationale: The 3.1 Dredging examination consists entirely of multiple-choice questions.
🟢 Question 10
A contractor seeking licensure in the 3.1 Dredging classification must apply to the LSLBC using:
A) An online portal only available to existing license holders
B) A paper application submitted to the LDNR
🔴🔴 C) A form adopted by the board as specified in the application requirements
D) A federal permit application through the USACE
Rationale: Applicants desiring to perform work must make application to the board on a form adopted
by the board. The LSLBC provides application forms and processes through their contractor portal.
