Colorado Utility Mapping Technician Certification Exam Questions and Correct Answers

COLORADO UTILITY MAPPING TECHNICIAN
CERTIFICATION EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A
2026|INSTANT DOWNLOAD PDF

QUESTION 1
What is the primary purpose of utility mapping in construction
projects?
A) To estimate project costs
B) To identify and locate underground utilities before
excavation
C) To design architectural structures
D) To replace engineering drawings
Rationale: Utility mapping helps prevent damage, service
interruptions, and safety hazards by identifying underground
infrastructure before digging.
Correct answer: B


QUESTION 2
Which organization provides standardized color codes for
underground utilities in the United States?
A) OSHA
B) APWA (American Public Works Association)

,C) EPA
D) FEMA
Rationale: APWA sets the universal color code system used to
mark utilities such as gas, water, electric, and telecom.
Correct answer: B


QUESTION 3
What color is typically used to mark electric power lines?
A) Blue
B) Yellow
C) Red
D) Green
Rationale: Red is universally used for electric power lines in
utility marking systems.
Correct answer: C


QUESTION 4
Which tool is commonly used for non-invasive underground
utility detection?
A) Transit level
B) Ground Penetrating Radar (GPR)
C) Torque wrench
D) Pressure gauge

,Rationale: GPR uses radar pulses to detect subsurface
structures without excavation.
Correct answer: B


QUESTION 5
What does "811" represent in the United States?
A) Emergency medical services
B) National utility locate call-before-you-dig number
C) Highway maintenance hotline
D) Fire department dispatch
Rationale: 811 is the national number to request utility marking
before excavation.
Correct answer: B


QUESTION 6
Which utility is typically marked with the color yellow?
A) Water
B) Sewage
C) Natural gas and petroleum pipelines
D) Electric power
Rationale: Yellow is assigned to gas, oil, and hazardous
pipelines.
Correct answer: C

, QUESTION 7
What is the main function of electromagnetic utility locating
equipment?
A) Measure soil density
B) Detect metallic utilities using electromagnetic fields
C) Map building interiors
D) Analyze water quality
Rationale: EM locators detect conductive materials like metal
pipes and cables.
Correct answer: B


QUESTION 8
Which utility is marked in blue according to APWA standards?
A) Electric
B) Potable water
C) Gas
D) Communications
Rationale: Blue is designated for potable (drinking) water
systems.
Correct answer: B


QUESTION 9