Walmart Stormwater & SWPPP Compliance Certification Prep
Exam | Actual Questions & 100% Correct Answers Guide
(2026 Edition)
Question 1
Which federal legislative act establishes the statutory basis for the
National Pollutant Discharge Elimination System (NPDES) permit
program?
A) Safe Drinking Water Act (SDWA)
B) Clean Water Act (CWA)
C) Resource Conservation and Recovery Act (RCRA)
D) Comprehensive Environmental Response, Compensation, and Liability
Act (CERCLA)
VERIFIED ANSWER: B) Clean Water Act (CWA)
EXPLANATION: The Clean Water Act (CWA) is the primary federal law
governing water pollution in the United States. Section 402 of the
CWA specifically establishes the NPDES permit program, which
regulates point source discharges of pollutants into waters of the
United States.
Question 2
,What is the primary role of a Stormwater Pollution Prevention Plan
(SWPPP) at a Walmart construction or operational facility?
A) To minimize overall project labor costs and track construction
milestones.
B) To identify potential sources of pollution and outline specific practices
to reduce pollutants in stormwater discharges.
C) To guarantee that the facility will never experience any structural
flooding.
D) To serve as a legal waiver that exempts Walmart from state
environmental regulations.
VERIFIED ANSWER: B) To identify potential sources of pollution and
outline specific practices to reduce pollutants in stormwater
discharges.
EXPLANATION: A SWPPP is a site-specific document mandated by
NPDES permits. It identifies all potential pollutant sources (such as
sediment, fuel, or trash) and prescribes Best Management Practices
(BMPs) to prevent those pollutants from leaving the site via
stormwater runoff.
Question 3
Which document must a facility operator file with the regulatory authority
to formally request coverage under an NPDES Stormwater General Permit
before construction begins?
A) Notice of Termination (NOT)
,B) Safety Data Sheet (SDS)
C) Notice of Intent (NOI)
D) Environmental Impact Statement (EIS)
VERIFIED ANSWER: C) Notice of Intent (NOI)
EXPLANATION: Submitting a Notice of Intent (NOI) serves as a formal
application and notification to the EPA or state environmental
agency that the operator intends to comply with the terms of the
Construction General Permit (CGP). Construction cannot legally
begin until the NOI is active.
Question 4
Under the EPA Construction General Permit (CGP), what is the default
mandatory frequency for conducting stormwater site inspections on
active construction sites?
A) Once every 30 calendar days and within 48 hours of any rainfall event.
B) At least once every 7 calendar days or once every 14 calendar days and
within 24 hours of a storm event of 0.25 inches or greater.
C) Only after major rainfall events exceeding 2.0 inches.
D) Quarterly, supplemented by an annual comprehensive audit.
VERIFIED ANSWER: B) At least once every 7 calendar days or once
every 14 calendar days and within 24 hours of a storm event of 0.25
inches or greater.
EXPLANATION: The EPA CGP provides operators two main choices for
, inspection frequencies: either once every 7 calendar days, or once
every 14 calendar days and within 24 hours of a rain event that
produces 0.25 inches or more of rain. Individual states may enforce
the stricter 7-day standard.
Question 5
Which of the following is categorized as a structural sediment control
Best Management Practice (BMP) rather than an erosion control
practice?
A) Hydromulching
B) Silt fence
C) Temporary seeding
D) Geotextile blankets
VERIFIED ANSWER: B) Silt fence
EXPLANATION: Erosion control practices focus on protecting the
bare soil surface and preventing soil particles from detaching (e.g.,
mulching, seeding, blankets). Sediment control practices focus on
trapping and filtering soil particles that have already eroded and are
moving in water runoff (e.g., silt fences, sediment basins).
Question 6
A hazardous chemical spill occurs near a storm drain inlet on a Walmart
facility parking lot. What is the correct initial operational response?
Exam | Actual Questions & 100% Correct Answers Guide
(2026 Edition)
Question 1
Which federal legislative act establishes the statutory basis for the
National Pollutant Discharge Elimination System (NPDES) permit
program?
A) Safe Drinking Water Act (SDWA)
B) Clean Water Act (CWA)
C) Resource Conservation and Recovery Act (RCRA)
D) Comprehensive Environmental Response, Compensation, and Liability
Act (CERCLA)
VERIFIED ANSWER: B) Clean Water Act (CWA)
EXPLANATION: The Clean Water Act (CWA) is the primary federal law
governing water pollution in the United States. Section 402 of the
CWA specifically establishes the NPDES permit program, which
regulates point source discharges of pollutants into waters of the
United States.
Question 2
,What is the primary role of a Stormwater Pollution Prevention Plan
(SWPPP) at a Walmart construction or operational facility?
A) To minimize overall project labor costs and track construction
milestones.
B) To identify potential sources of pollution and outline specific practices
to reduce pollutants in stormwater discharges.
C) To guarantee that the facility will never experience any structural
flooding.
D) To serve as a legal waiver that exempts Walmart from state
environmental regulations.
VERIFIED ANSWER: B) To identify potential sources of pollution and
outline specific practices to reduce pollutants in stormwater
discharges.
EXPLANATION: A SWPPP is a site-specific document mandated by
NPDES permits. It identifies all potential pollutant sources (such as
sediment, fuel, or trash) and prescribes Best Management Practices
(BMPs) to prevent those pollutants from leaving the site via
stormwater runoff.
Question 3
Which document must a facility operator file with the regulatory authority
to formally request coverage under an NPDES Stormwater General Permit
before construction begins?
A) Notice of Termination (NOT)
,B) Safety Data Sheet (SDS)
C) Notice of Intent (NOI)
D) Environmental Impact Statement (EIS)
VERIFIED ANSWER: C) Notice of Intent (NOI)
EXPLANATION: Submitting a Notice of Intent (NOI) serves as a formal
application and notification to the EPA or state environmental
agency that the operator intends to comply with the terms of the
Construction General Permit (CGP). Construction cannot legally
begin until the NOI is active.
Question 4
Under the EPA Construction General Permit (CGP), what is the default
mandatory frequency for conducting stormwater site inspections on
active construction sites?
A) Once every 30 calendar days and within 48 hours of any rainfall event.
B) At least once every 7 calendar days or once every 14 calendar days and
within 24 hours of a storm event of 0.25 inches or greater.
C) Only after major rainfall events exceeding 2.0 inches.
D) Quarterly, supplemented by an annual comprehensive audit.
VERIFIED ANSWER: B) At least once every 7 calendar days or once
every 14 calendar days and within 24 hours of a storm event of 0.25
inches or greater.
EXPLANATION: The EPA CGP provides operators two main choices for
, inspection frequencies: either once every 7 calendar days, or once
every 14 calendar days and within 24 hours of a rain event that
produces 0.25 inches or more of rain. Individual states may enforce
the stricter 7-day standard.
Question 5
Which of the following is categorized as a structural sediment control
Best Management Practice (BMP) rather than an erosion control
practice?
A) Hydromulching
B) Silt fence
C) Temporary seeding
D) Geotextile blankets
VERIFIED ANSWER: B) Silt fence
EXPLANATION: Erosion control practices focus on protecting the
bare soil surface and preventing soil particles from detaching (e.g.,
mulching, seeding, blankets). Sediment control practices focus on
trapping and filtering soil particles that have already eroded and are
moving in water runoff (e.g., silt fences, sediment basins).
Question 6
A hazardous chemical spill occurs near a storm drain inlet on a Walmart
facility parking lot. What is the correct initial operational response?
