Certified Hazardous Materials Manager (CHMM) — Questions and Answers

Question 1: Under the hierarchy of controls, which control measure is considered MOST effective for reducing occupational hazards?

Administrative controls such as job rotation
Personal protective equipment
Engineering controls such as enclosure or substitution
Elimination of the hazard (Correct answer)

Correct answer: Elimination of the hazard

Elimination — physically removing the hazard — is the most effective control because it prevents exposure entirely rather than managing it.

Question 2: During a large chemical spill at a manufacturing plant, the senior fire chief, the facility's emergency response manager, and a state environmental protection official are all on-scene with command authority. To ensure effective and coordinated management of the incident, which structure should be implemented under the National Incident Management System (NIMS)?

A single Incident Commander from the agency with the most resources.
A Unified Command where all agency leaders jointly make decisions. (Correct answer)
An Area Command to oversee the incident from a remote location.
A multi-tiered command with the federal agency at the highest level.

Correct answer: A Unified Command where all agency leaders jointly make decisions.

Unified Command is a NIMS structure used when multiple jurisdictions or agencies have responsibility for an incident. It brings together the Incident Commanders from the major organizations to coordinate an effective response, establish a common set of objectives, and share in decision-making, without any single agency losing its own authority.

Question 3: Which RCRA corrective action document establishes the final cleanup standards and schedule for a facility subject to a corrective action order?

Corrective measures implementation (CMI) plan (Correct answer)
Site investigation report
Preliminary assessment report
RCRA facility assessment (RFA)

Correct answer: Corrective measures implementation (CMI) plan

The CMI plan details the selected corrective measures, implementation schedule, and performance standards that a RCRA facility must achieve.

Question 4: What is the minimum secondary containment capacity required for a single AST under EPA SPCC regulations?

100% of all tanks' combined capacity
110% of the largest tank's capacity (Correct answer)
50% of the tank's storage capacity
The volume of the largest expected spill

Correct answer: 110% of the largest tank's capacity

EPA SPCC regulations require secondary containment sufficient to hold 110% of the largest single tank's capacity.

Question 5: Under 40 CFR Part 262, which document must accompany a hazardous waste shipment from the generator to the treatment, storage, or disposal facility?

Uniform Hazardous Waste Manifest (Correct answer)
Certificate of Disposal
Material Safety Data Sheet
Bill of lading

Correct answer: Uniform Hazardous Waste Manifest

The Uniform Hazardous Waste Manifest is the tracking document required by RCRA to follow hazardous waste from its point of generation to final disposal.

Question 6: Under RCRA, a large quantity generator (LQG) may accumulate hazardous waste on-site for a maximum of how many days without a permit?

30 days
180 days
60 days
90 days (Correct answer)

Correct answer: 90 days

LQGs may accumulate hazardous waste on-site for up to 90 days without obtaining a storage permit.

Question 7: A tank farm facility experiences a spill of a listed hazardous substance that reaches a navigable waterway. Under CERCLA Section 103 and 40 CFR Part 302, notification to the NRC is required when the quantity released equals or exceeds the:

Threshold planning quantity (TPQ)
Reportable Quantity (RQ) (Correct answer)
Immediately dangerous to life or health (IDLH) value
Permissible exposure limit (PEL)

Correct answer: Reportable Quantity (RQ)

CERCLA requires immediate notification to the NRC when a hazardous substance release equals or exceeds its Reportable Quantity.

Question 8: A facility generates F003 listed hazardous waste (spent non-halogenated solvents). The waste is treated to non-detect levels for all listed constituents. It must still be managed as listed hazardous waste unless:

The facility obtains a delisting from EPA or an authorized state (Correct answer)
The waste is diluted below characteristic thresholds
The facility has a RCRA Part B permit authorizing the determination
The generator certifies treatment was effective

Correct answer: The facility obtains a delisting from EPA or an authorized state

Listed hazardous waste retains its listed status unless EPA or an authorized state grants a delisting petition for that specific waste from that specific facility.

Question 9: Under CERCLA, which legal doctrine holds all potentially responsible parties jointly and severally liable for cleanup costs at a Superfund site?

Joint and several liability (Correct answer)
Strict liability
Negligence per se
Contributory liability

Correct answer: Joint and several liability

CERCLA imposes joint and several liability, meaning any one responsible party can be held liable for the entire cleanup cost regardless of their proportional contribution.

Question 10: A facility operates a permitted hazardous waste storage unit and is subject to financial assurance requirements under 40 CFR Part 264 Subpart H. Which mechanism would NOT be an acceptable financial assurance instrument for closure costs?

Letter of credit from an acceptable financial institution
Closure trust fund
Surety bond guaranteeing performance
Personal guarantee from the facility owner (Correct answer)

Correct answer: Personal guarantee from the facility owner

EPA does not accept personal guarantees from individual facility owners as financial assurance; approved mechanisms include trust funds, letters of credit, surety bonds, insurance, and financial tests.

Question 11: Which entity issues the Special Permit (formerly Special Permit) allowing a deviation from 49 CFR hazmat transportation regulations?

DOE
EPA
OSHA
PHMSA (Pipeline and Hazardous Materials Safety Administration) (Correct answer)

Correct answer: PHMSA (Pipeline and Hazardous Materials Safety Administration)

PHMSA issues special permits (formerly 'exemptions') that authorize deviations from the Hazardous Materials Regulations when equivalent safety is demonstrated.

Question 12: A facility generates used oil contaminated with a listed hazardous waste solvent. How must this mixture be managed?

As hazardous waste under RCRA Subtitle C (Correct answer)
As non-hazardous waste if the solvent concentration is below 1%
As used oil only, under 40 CFR Part 279
As a recyclable material exempt from RCRA

Correct answer: As hazardous waste under RCRA Subtitle C

Used oil mixed with listed hazardous waste is regulated as hazardous waste under RCRA Subtitle C, not as used oil.

Question 13: A remediation manager needs to address a plume of dissolved chlorinated solvents in groundwater that is slowly migrating. The goal is to install a passive, long-term treatment system that cleans the water as it flows through a subsurface treatment zone without continuous energy input. Which technology best fits this description?

Dual-Phase Extraction
Pump and Treat
Permeable Reactive Barrier (PRB) (Correct answer)
Air Sparging

Correct answer: Permeable Reactive Barrier (PRB)

A Permeable Reactive Barrier (PRB) is a passive, in-situ treatment zone of reactive material installed across the flow path of a contaminant plume. As groundwater passes through the barrier, the contaminants are degraded or captured. This method is passive and does not require ongoing pumping. Pump and Treat, Dual-Phase Extraction, and Air Sparging are all active remediation technologies that require continuous energy input to operate pumps or blowers.

Question 14: Which regulatory program under RCRA requires permitted hazardous waste treatment, storage, and disposal facilities (TSDFs) to investigate and address releases from solid waste management units?

Land disposal restrictions
Biennial reporting system
Hazardous waste minimization program
Corrective action program (Correct answer)

Correct answer: Corrective action program

RCRA's corrective action program (40 CFR Part 264 Subpart S) requires TSDFs to clean up hazardous releases from all solid waste management units at the facility.

Question 15: Under TSCA Section 6, EPA required phased elimination of polychlorinated biphenyls (PCBs). What is the general disposal standard for PCB concentrations ≥500 ppm?

Landfill disposal in a permitted chemical waste landfill
Treatment in a wastewater treatment facility
Export for disposal in a licensed foreign facility
Incineration in an approved incinerator or high-efficiency boiler (Correct answer)

Correct answer: Incineration in an approved incinerator or high-efficiency boiler

PCBs at concentrations ≥500 ppm must be incinerated in an EPA-approved incinerator or approved high-efficiency boiler under 40 CFR 761.

Question 16: Which of the following is an acceptable professional reference for a CHMM application?

A direct supervisor familiar with the applicant's hazardous materials work (Correct answer)
A family member with an environmental science degree
A personal friend who is also a CHMM
Any licensed attorney

Correct answer: A direct supervisor familiar with the applicant's hazardous materials work

IHMM requires professional references who can verify the applicant's hazardous materials management experience, typically a supervisor or senior colleague.

Question 17: A Large Quantity Generator (LQG) ships a hazardous waste load to a permitted TSDF on March 1st. By April 15th, the generator has still not received a signed copy of the manifest from the TSDF. According to 40 CFR 262.42, what is the generator's required action at this point?

Generate a new manifest and mark the original shipment as lost in transit.
Notify the National Response Center (NRC) of a potential release to the environment.
Contact the transporter and/or the designated TSDF to determine the status of the shipment. (Correct answer)
Immediately file an Exception Report with the EPA Regional Administrator.

Correct answer: Contact the transporter and/or the designated TSDF to determine the status of the shipment.

According to 40 CFR 262.42(a)(1), if an LQG does not receive a signed copy of the manifest from the TSDF within 35 days of acceptance by the initial transporter, the generator must contact the transporter and/or the TSDF to determine the waste's status. Since more than 35 days (but less than 45 days) have passed, this is the required action. Filing an Exception Report is the next step, required only if a signed copy is still not received within 45 days.

Question 18: In a hazmat incident involving a flammable gas leak, which action takes highest priority before other response activities?

Preparing a preliminary cost estimate for cleanup
Notifying regulatory agencies of the release
Eliminating ignition sources and establishing a hot zone perimeter (Correct answer)
Conducting air monitoring for toxic byproducts

Correct answer: Eliminating ignition sources and establishing a hot zone perimeter

Eliminating ignition sources and establishing a safety perimeter to prevent fire or explosion takes top priority with flammable gas releases.

Question 19: What does the term 'permissible exposure limit' (PEL) represent under OSHA regulations?

The concentration immediately dangerous to life and health
A recommended advisory guideline with no legal force
A short-term exposure limit for 15-minute exposures
The legally enforceable maximum airborne concentration for an 8-hour workday (Correct answer)

Correct answer: The legally enforceable maximum airborne concentration for an 8-hour workday

PELs are legally enforceable OSHA standards specifying the maximum allowable airborne chemical concentration during an 8-hour workday.

Question 20: Which UN performance packaging specification requires packages to pass drop, leakproofness, and hydrostatic pressure tests?

Open-head steel drums with no spec markings
UN specification packaging for liquids (e.g., 1A1 drums) (Correct answer)
Fiber drums with plastic liners
DOT specification 17C drums

Correct answer: UN specification packaging for liquids (e.g., 1A1 drums)

UN specification packagings such as 1A1 closed-head steel drums must pass drop, leakproofness, and hydrostatic pressure tests to be certified for hazardous liquids.

Question 21: SARA Title III is also known by what common name?

Emergency Planning and Community Right-to-Know Act (EPCRA) (Correct answer)
Hazardous Waste Operations and Emergency Response
Pollution Prevention Act
Comprehensive Environmental Response Act

Correct answer: Emergency Planning and Community Right-to-Know Act (EPCRA)

SARA Title III is commonly called EPCRA and requires facilities to report chemical hazards and releases to support local emergency planning.

Question 22: Which regulatory framework specifically governs the investigation and cleanup of releases from underground storage tanks (USTs) containing petroleum products?

TSCA Section 7 imminent hazard authority
RCRA Subtitle I UST regulations (40 CFR Part 280) (Correct answer)
CERCLA Superfund program
Clean Water Act SPCC rule

Correct answer: RCRA Subtitle I UST regulations (40 CFR Part 280)

RCRA Subtitle I and 40 CFR Part 280 establish the UST program, including release detection, corrective action, and closure requirements for petroleum UST systems.

Question 23: Life Cycle Assessment (LCA) is used in pollution prevention primarily to:

Determine regulatory compliance thresholds for TRI reporting
Estimate remediation costs at contaminated sites
Calculate disposal costs for hazardous waste manifests
Evaluate environmental impacts of a product or process from raw material extraction through end-of-life (Correct answer)

Correct answer: Evaluate environmental impacts of a product or process from raw material extraction through end-of-life

LCA is a systematic tool that quantifies environmental impacts across all stages of a product's or process's life, enabling better decision-making for pollution prevention.

Question 24: Phytoremediation using plants to uptake and concentrate metals in above-ground biomass is specifically called what?

Rhizofiltration
Phytoextraction (Correct answer)
Phytostabilization
Phytodegradation

Correct answer: Phytoextraction

Phytoextraction uses hyperaccumulator plants to take up metals from soil into harvestable shoot tissue, which is then removed and disposed of to reduce soil metal concentrations.

Question 25: In Fault Tree Analysis (FTA), what does a 'top event' represent?

The root cause at the base of the tree
The undesired event whose causes are being analyzed (Correct answer)
The most frequent minor incident
The safeguard that prevents failure

Correct answer: The undesired event whose causes are being analyzed

The top event in an FTA is the undesired outcome (such as a toxic release) from which the analyst works downward to identify contributing causes.

Question 26: Under RCRA, the 'derived-from' rule states that:

Residues derived from treating, storing, or disposing of listed hazardous waste are also listed hazardous waste (Correct answer)
Waste derived from a characteristic waste retains its hazardous classification
Any waste derived from recycling is excluded from RCRA
Waste derived from industrial processes is automatically F-listed

Correct answer: Residues derived from treating, storing, or disposing of listed hazardous waste are also listed hazardous waste

The derived-from rule specifies that any solid waste generated from the treatment, storage, or disposal of a listed hazardous waste is also a listed hazardous waste.

Question 27: Which RCRA concept determines whether contaminated environmental media (soil, groundwater) at a TSDF is subject to RCRA Subtitle C hazardous waste regulation?

Land disposal restriction variance
Mixture rule
Derived-from rule
Contained-in policy (Correct answer)

Correct answer: Contained-in policy

The contained-in policy states that environmental media is not itself a listed waste but is subject to RCRA if it 'contains' a listed hazardous waste.

Question 28: The process of identifying what can go wrong, how likely it is, and what the consequences are is the definition of which activity?

Safety audit
Consequence analysis
Risk assessment (Correct answer)
Process safety management

Correct answer: Risk assessment

Risk assessment is the structured process of identifying hazards, estimating likelihood and consequences, and characterizing overall risk.

Question 29: Under EPCRA Section 313, what is the Toxics Release Inventory (TRI) program designed to track?

Environmental violations by regulated industries
Occupational illnesses caused by toxic exposures
Releases and transfers of listed toxic chemicals from manufacturing facilities (Correct answer)
Imports of toxic chemicals from foreign countries

Correct answer: Releases and transfers of listed toxic chemicals from manufacturing facilities

TRI tracks annual releases and off-site transfers of listed toxic chemicals from covered facilities, making data publicly available.

Question 30: Which of the following is NOT one of the nine DOT hazard classes?

Explosives
Flammable Liquids
Radioactive Materials
Toxic Industrial Chemicals (Correct answer)

Correct answer: Toxic Industrial Chemicals

The nine DOT hazard classes are explosives, gases, flammable liquids, flammable solids, oxidizers/organics, toxic/infectious, radioactive, corrosives, and miscellaneous; 'Toxic Industrial Chemicals' is not a DOT class.

Question 31: A CHMM must ensure waste containers in a RCRA storage area bear which label at minimum?

The chemical name only
DOT shipping name and UN number
OSHA GHS pictograms and signal word
The words 'Hazardous Waste' and the waste's hazards (Correct answer)

Correct answer: The words 'Hazardous Waste' and the waste's hazards

RCRA requires that all containers of hazardous waste be clearly labeled with the words 'Hazardous Waste' and words describing the hazards of the contents such as 'flammable' or 'corrosive'.

Question 32: Why is waste management not separate from other global challenges like resource sustainability?

Invalid
None of the above
Valid (Correct answer)
Depends upon the waste type

Correct answer: Valid

Waste management is intrinsically linked to broader global challenges like resource sustainability because waste represents discarded resources. Inefficient waste management leads to the loss of valuable materials that could be recycled or reused, increasing the demand for virgin resources and contributing to environmental degradation. Effective waste management, therefore, is a critical component of a sustainable resource economy.

Question 33: A facility has a total aboveground oil storage capacity of 1,500 gallons, consisting of multiple tanks, none of which are larger than 500 gallons. The facility's location is such that a spill could reasonably be expected to discharge into a nearby river. According to 40 CFR Part 112, why is this facility required to have a Spill Prevention, Control, and Countermeasure (SPCC) Plan?

Because its aggregate aboveground storage capacity exceeds 1,320 gallons and a spill could reach navigable waters. (Correct answer)
Because it has a single container with a capacity greater than 660 gallons.
Because it stores more than one type of petroleum oil.
Because it has a completely buried storage capacity greater than 42,000 gallons.

Correct answer: Because its aggregate aboveground storage capacity exceeds 1,320 gallons and a spill could reach navigable waters.

The SPCC rule applies to facilities that meet two criteria: 1) they have an aggregate aboveground oil storage capacity greater than 1,320 U.S. gallons (or a buried capacity over 42,000 gallons), and 2) due to their location, they could reasonably be expected to discharge oil into navigable waters. This facility's total capacity of 1,500 gallons exceeds the 1,320-gallon threshold, and it has the potential to impact a navigable waterway, making an SPCC plan mandatory.

Question 34: When conducting a Hazard and Operability (HAZOP) study at a facility, the term 'deviation' refers to which of the following?

A departure from design intent identified by applying guide words to process parameters (Correct answer)
A difference between actual and target production yield
A variance granted by a regulatory agency for process operation
An unplanned equipment failure recorded in the maintenance log

Correct answer: A departure from design intent identified by applying guide words to process parameters

In a HAZOP, deviations are identified by combining guide words (e.g., 'no,' 'more') with process parameters to find departures from design intent.

Question 35: A newly certified CHMM wants to use the credential on a business card. What is the correct placement per professional convention?

Only in parentheses beneath the address
Before the name (e.g., CHMM John Smith)
In place of a job title
After the name (e.g., John Smith, CHMM) (Correct answer)

Correct answer: After the name (e.g., John Smith, CHMM)

Professional credentials are conventionally listed after the name with a comma, e.g., John Smith, CHMM.

Question 36: Which domain is explicitly tested on the CHMM examination according to IHMM's published exam blueprint?

Corporate financial auditing
Hazardous materials regulations and compliance (Correct answer)
Supply chain logistics optimization
International trade finance

Correct answer: Hazardous materials regulations and compliance

IHMM's exam blueprint covers domains including hazardous materials regulations, risk assessment, emergency response, and environmental management.

Question 37: Under 40 CFR Part 264, what is the maximum time a large quantity generator (LQG) may accumulate hazardous waste on-site without a storage permit?

60 days
30 days
90 days (Correct answer)
180 days

Correct answer: 90 days

LQGs may accumulate hazardous waste on-site for up to 90 days without a RCRA storage permit under 40 CFR 262.17.

Question 38: Which section of the Hazardous Materials Table (49 CFR 172.101) provides the special provisions applicable to a material?

Column 5
Column 3
Column 7 (Correct answer)
Column 9

Correct answer: Column 7

Column 7 of the Hazardous Materials Table lists the special provision numbers that modify or supplement general requirements for that specific material.

Question 39: Soil washing is an ex situ remediation technology that concentrates contaminants into which fraction for further treatment or disposal?

The coarse sand and gravel fraction
The fine-grained silt and clay fraction (Correct answer)
The intermediate gravel fraction
The vapor phase

Correct answer: The fine-grained silt and clay fraction

Contaminants preferentially sorb to fine-grained particles; soil washing separates and concentrates the fine fraction, allowing the bulk of cleaner coarse material to be reused.

Question 40: Under RCRA, what is the required aisle space between containers in a hazardous waste storage area?

At least 6 feet to accommodate emergency equipment
At least 30 inches as specified by OSHA fire code
No specific width is required, only that containers can be visually inspected
At least 2 feet wide to allow inspection and emergency access (Correct answer)

Correct answer: At least 2 feet wide to allow inspection and emergency access

40 CFR 265.35 requires that sufficient aisle space be maintained to allow unobstructed movement of personnel and emergency equipment, and EPA guidance specifies at least 2-foot aisles.

Question 41: A facility manager is reviewing a chemical's SDS and notes a vapor density of 1.8 (air = 1.0). This physical property indicates that the vapor will most likely do what in the facility?

Sink and accumulate in low-lying areas and confined spaces (Correct answer)
Rise and accumulate near the ceiling
Disperse uniformly throughout the room
Dissolve rapidly in ambient humidity

Correct answer: Sink and accumulate in low-lying areas and confined spaces

Vapors with density greater than 1.0 are heavier than air and will settle in pits, trenches, and floor-level confined spaces.

Question 42: Under DOT Hazardous Materials Regulations, which packaging group indicates the highest level of danger and most stringent storage requirements?

Packing Group IV
Packing Group I (Correct answer)
Packing Group II
Packing Group III

Correct answer: Packing Group I

DOT Packing Group I designates materials with the greatest danger, requiring the most stringent packaging and handling controls.

Question 43: Which of the following is a key requirement for owners and operators of permitted hazardous waste Treatment, Storage, and Disposal Facilities (TSDFs) under RCRA Subtitle C?

Implementing an OSHA Process Safety Management (PSM) program for all chemicals on site.
Obtaining a National Pollutant Discharge Elimination System (NPDES) permit for all potential air emissions.
Submitting a biennial report to the EPA detailing only waste minimization efforts.
Providing financial assurance for the costs of closure and post-closure care of the facility. (Correct answer)

Correct answer: Providing financial assurance for the costs of closure and post-closure care of the facility.

RCRA regulations in 40 CFR Part 264, Subpart H require TSDF owners and operators to demonstrate they have the financial resources to properly close their facility and provide any necessary post-closure monitoring and care. This financial assurance is a cornerstone of the TSDF permitting process and ensures that taxpayers will not have to fund the cleanup if the owner abandons the site or goes bankrupt.

Question 44: Pyrophoric materials must be stored under which conditions to prevent ignition?

In a refrigerated unit set below 40°F
In a locked outdoor storage shed
In a flammable storage cabinet with ventilation
Under an inert atmosphere or in sealed containers away from air and moisture (Correct answer)

Correct answer: Under an inert atmosphere or in sealed containers away from air and moisture

Pyrophoric materials ignite spontaneously on contact with air and must be stored under inert gas or in sealed, air-free containers.

Question 45: During the recovery phase following a hazmat incident, 'site characterization' involves:

Calculating the cost of lost business operations during the incident
Interviewing witnesses to determine the cause of the release
Systematically sampling and analyzing the site to define the extent of contamination (Correct answer)
Documenting insurance claims and property damage assessments

Correct answer: Systematically sampling and analyzing the site to define the extent of contamination

Site characterization involves systematic sampling, analysis, and mapping to determine the nature and extent of contamination before cleanup planning.

Question 46: A Preliminary Hazard Analysis (PHA) is typically conducted at which stage of a project?

During the operational permit renewal
After a major incident has occurred
During decommissioning of a facility
Early in the conceptual or design phase (Correct answer)

Correct answer: Early in the conceptual or design phase

PHA is an early-stage analysis performed during conceptual design to identify hazards before detailed design decisions are locked in.

Question 47: Make trash management more effective by

reducing our trash output (Correct answer)
using more disposable items
by discarding recylable items
releasing industrial emission to atmosphere

Correct answer: reducing our trash output

The most effective way to improve trash management and reduce its environmental impact is by preventing waste generation in the first place. Reducing our overall trash output lessens the burden on landfills, conserves natural resources, and decreases pollution associated with manufacturing and disposal. This approach aligns with the 'reduce' principle of the waste hierarchy, which prioritizes waste prevention.

Question 48: In an environmental health risk assessment, what is the step that determines how much of a chemical people are actually exposed to?

Exposure assessment (Correct answer)
Risk characterization
Dose-response assessment
Hazard identification

Correct answer: Exposure assessment

Exposure assessment quantifies the magnitude, frequency, and duration of human contact with a hazardous substance through all relevant pathways.

Question 49: What is the primary purpose of the Toxic Substances Control Act (TSCA)?

Set cleanup standards for contaminated soil
Establish worker right-to-know requirements
Evaluate and control risks from existing and new chemicals in commerce (Correct answer)
Regulate transportation of hazardous materials

Correct answer: Evaluate and control risks from existing and new chemicals in commerce

TSCA gives EPA authority to require reporting, recordkeeping, and testing of chemical substances and to restrict those that pose unreasonable risks.

Question 50: When storing incompatible hazardous chemicals, what is the primary hazard that separation is intended to prevent?

Theft or unauthorized access
Dangerous reactions such as fire, explosion, or toxic gas release (Correct answer)
Regulatory non-compliance fines
Label degradation from chemical vapors

Correct answer: Dangerous reactions such as fire, explosion, or toxic gas release

Separating incompatible chemicals prevents violent reactions including fires, explosions, and generation of toxic gases.

Question 51: Which federal regulation governs the National Pollutant Discharge Elimination System (NPDES) permit program for wastewater discharges?

Safe Drinking Water Act Section 1421
Clean Air Act Section 111
RCRA Section 3004
Clean Water Act Section 402 (Correct answer)

Correct answer: Clean Water Act Section 402

Clean Water Act Section 402 establishes the NPDES program, requiring permits for discharges of pollutants into waters of the United States.

Question 52: In the CERCLA (Superfund) process, which key document is issued after the completion of the Remedial Investigation/Feasibility Study (RI/FS) to formally select the remedy for a contaminated site and provide the legal basis for the cleanup action?

Record of Decision (ROD) (Correct answer)
Conceptual Site Model (CSM)
RCRA Facility Investigation (RFI)
Preliminary Assessment (PA)

Correct answer: Record of Decision (ROD)

The Record of Decision (ROD) is a public, legal document that explains which cleanup alternative will be used to remediate a Superfund site. It is prepared after the RI/FS and the public comment period on the Proposed Plan. A Preliminary Assessment is an initial step, a Conceptual Site Model is a tool used during the investigation, and an RFI is part of the RCRA Corrective Action process.

Question 53: What is the primary purpose of a 'termination briefing' at the conclusion of a hazmat incident?

To document lessons learned, critique operations, and identify follow-up actions (Correct answer)
To notify insurance carriers that the incident has been resolved
To debrief media and release final information to the public
To formally transfer custody of contaminated materials to a licensed disposal firm

Correct answer: To document lessons learned, critique operations, and identify follow-up actions

A termination briefing documents what went right and wrong, captures lessons learned, and assigns follow-up responsibilities to improve future responses.

Question 54: A Material Safety Data Sheet (legacy) or Safety Data Sheet (GHS) Section 6 covers which emergency response topic?

Accidental release measures (spill/leak procedures) (Correct answer)
Stability and reactivity
Exposure controls and personal protection
Physical and chemical properties

Correct answer: Accidental release measures (spill/leak procedures)

Section 6 of the GHS-aligned SDS covers accidental release measures, including spill containment and cleanup procedures.

Question 55: An Emergency Action Plan (EAP) required under 29 CFR 1910.38 must include which of the following elements?

Specific chemical hazard assessments for each substance on-site
Procedures for reporting fires and emergencies, and evacuation routes (Correct answer)
Medical surveillance records for all emergency responders
Annual financial analysis of emergency response costs

Correct answer: Procedures for reporting fires and emergencies, and evacuation routes

OSHA 29 CFR 1910.38 requires EAPs to include emergency reporting procedures, evacuation routes, and accounting for employees after evacuation.

Question 56: Which route of chemical exposure is responsible for the MAJORITY of occupational illness cases involving volatile organic compounds (VOCs)?

Injection
Inhalation (Correct answer)
Ingestion
Dermal contact

Correct answer: Inhalation

Inhalation is the primary route of exposure for VOCs in occupational settings because volatile chemicals readily become airborne and are inhaled during breathing.

Question 57: A small quantity generator (SQG) accumulating hazardous waste on-site must comply with which of the following?

A 270-day accumulation limit and specific container/tank standards (Correct answer)
Full TSDF permit requirements
No accumulation time limit if containers are labeled properly
A 270-day accumulation limit with biennial reporting

Correct answer: A 270-day accumulation limit and specific container/tank standards

SQGs may accumulate hazardous waste for up to 270 days and must meet container and tank management standards under 40 CFR 262.

Question 58: Which regulation requires facilities with threshold quantities of regulated substances to develop Risk Management Plans (RMPs)?

EPA RMP Rule (40 CFR Part 68) (Correct answer)
EPCRA Title III
DOT HMR 49 CFR 172
OSHA PSM Standard (29 CFR 1910.119)

Correct answer: EPA RMP Rule (40 CFR Part 68)

EPA's RMP rule under CAA Section 112(r) requires facilities with regulated substances above threshold quantities to develop and submit RMPs to the EPA.

Question 59: Under OSHA's Process Safety Management (PSM) standard, what is the threshold quantity for flammable liquids and gases that triggers coverage?

25,000 lbs
10,000 lbs (Correct answer)
5,000 lbs
15,000 lbs

Correct answer: 10,000 lbs

29 CFR 1910.119 sets the threshold quantity for flammable liquids and gases at 10,000 lbs for PSM applicability.

Question 60: Which OSHA standard requires employers to develop and implement an Exposure Control Plan for bloodborne pathogens?

29 CFR 1910.119
29 CFR 1910.120
29 CFR 1910.1000
29 CFR 1910.1030 (Correct answer)

Correct answer: 29 CFR 1910.1030

29 CFR 1910.1030 (Bloodborne Pathogens standard) requires a written Exposure Control Plan to eliminate or minimize employee exposure.

Question 61: Which of the following is a correct practice for storing compressed gas cylinders in a hazardous materials storage area?

Storing oxygen and flammable gas cylinders together if both are secured with chains
Removing valve caps when cylinders are in storage to check for leaks
Laying cylinders horizontally to prevent tipping
Securing cylinders upright with chains or straps and separating by gas type (Correct answer)

Correct answer: Securing cylinders upright with chains or straps and separating by gas type

Compressed gas cylinders must be stored upright, secured against falling, and segregated by gas type (e.g., oxidizers away from flammables).

Question 62: The municipality or local authority charges users based on how much rubbish they bring for pickup.

Resource efficiency
Polluter pays principle
Zero waste
pay as you throw (Correct answer)

Correct answer: pay as you throw

The 'pay as you throw' (PAYT) system is an economic instrument where residents are charged for waste collection based on the amount of waste they generate. This directly aligns with the description of a municipality charging users based on how much rubbish they bring for pickup. It incentivizes waste reduction and recycling by making individuals financially accountable for their waste output.

Question 63: Under 29 CFR 1910.106, flammable liquids stored in inside storage rooms must have floors that are either liquid-tight or equipped with:

Concrete construction only
A raised sill or ramp at the door opening (Correct answer)
Non-slip coatings
Automatic floor drain systems

Correct answer: A raised sill or ramp at the door opening

OSHA requires flammable liquid storage rooms to have liquid-tight floors or a raised sill/ramp to contain spills and prevent liquid from spreading.

Question 64: How does holding a CHMM credential primarily benefit an organization?

It guarantees the organization immunity from EPA enforcement actions
It replaces the need for site-specific hazardous waste permits
It demonstrates that qualified professionals are managing hazardous materials risks and compliance (Correct answer)
It qualifies the organization for automatic federal contracting preferences

Correct answer: It demonstrates that qualified professionals are managing hazardous materials risks and compliance

Employing a CHMM signals to regulators, clients, and the public that the organization has competent professionals overseeing its hazardous materials programs.

Question 65: Which act requires owners and operators of underground storage tanks (USTs) to meet specific technical and financial responsibility requirements?

OPA 90
SARA Title III
RCRA Subtitle I (Correct answer)
CERCLA Section 107

Correct answer: RCRA Subtitle I

RCRA Subtitle I specifically addresses underground storage tanks and requires leak detection, spill and overfill prevention, and corrective action.

Question 66: Which factor most significantly affects the decision to shelter-in-place versus evacuate during a toxic chemical release?

Wind speed, direction, duration of release, and building integrity (Correct answer)
The chemical's flash point and autoignition temperature
The quantity of chemical released regardless of other conditions
Whether the facility has a written emergency response plan

Correct answer: Wind speed, direction, duration of release, and building integrity

The decision between shelter-in-place and evacuation depends on meteorological conditions, expected release duration, distance, and the protective capacity of available structures.

Question 67: Which of the following best describes a 'Portable Tank' (T-code) used in hazmat transportation?

A non-bulk container under 450 liters
A bulk packaging designed to be filled, transported, emptied, and refilled, not permanently attached to a vehicle (Correct answer)
A DOT Specification 406 cargo tank
A fixed tank mounted permanently on a tank truck chassis

Correct answer: A bulk packaging designed to be filled, transported, emptied, and refilled, not permanently attached to a vehicle

Portable tanks (identified by T-codes in the HMT) are bulk packagings designed to be filled, transported, emptied, and reused, and are not permanently attached to any transport vehicle.

Question 68: Under NFPA 1, a facility's hazardous materials inventory control plan must include which of the following for each hazardous material stored on site?

The maximum quantity stored, storage location, and applicable hazard category (Correct answer)
Monthly purchasing records and invoice copies
The names of all employees authorized to handle the material
Insurance coverage amounts and carrier contact information

Correct answer: The maximum quantity stored, storage location, and applicable hazard category

An inventory control plan must document the maximum allowable quantity, storage location, and hazard classification for each hazardous material.

Question 69: An Environmental Management System (EMS) based on ISO 14001 supports pollution prevention most effectively through:

Automating hazardous waste manifest preparation to reduce paperwork errors
Certifying that a facility has met all federal and state environmental permit requirements
Establishing a Plan-Do-Check-Act cycle that drives continual improvement in environmental performance (Correct answer)
Prescribing specific emission limits tailored to each facility's production output

Correct answer: Establishing a Plan-Do-Check-Act cycle that drives continual improvement in environmental performance

ISO 14001's Plan-Do-Check-Act framework creates a structured cycle for identifying environmental aspects, setting objectives, implementing controls, and reviewing results to achieve continual P2 improvement.

Question 70: The Hazardous and Solid Waste Amendments (HSWA) of 1984 added which significant requirement to RCRA?

Stormwater permitting for industrial facilities
National ambient air quality standards for hazardous air pollutants
Land disposal restrictions (LDRs) for untreated hazardous waste (Correct answer)
Mandatory recycling of all industrial waste

Correct answer: Land disposal restrictions (LDRs) for untreated hazardous waste

HSWA introduced land disposal restrictions, requiring treatment of hazardous waste to meet specific standards before land disposal.

Question 71: A company exports hazardous waste to a foreign country for recovery. Under RCRA, which U.S. notification requirement applies?

No notification is required if the receiving country's laws permit it
The exporter must notify EPA and receive written consent from the receiving country before export (Correct answer)
The exporter must obtain a RCRA permit amendment
Only DOT placarding requirements apply to export shipments

Correct answer: The exporter must notify EPA and receive written consent from the receiving country before export

RCRA Section 3017 and 40 CFR Part 262 Subpart H require exporters to notify EPA and receive written consent from the receiving country prior to export.

Question 72: A facility's waste characterization shows a liquid waste with pH 2.1. Under 40 CFR 261.22, this waste is classified as hazardous due to which characteristic?

Ignitability
Reactivity
Toxicity
Corrosivity (Correct answer)

Correct answer: Corrosivity

A liquid with pH ≤ 2 or ≥ 12.5 exhibits the RCRA corrosivity characteristic.

Question 73: Thermal in situ remediation techniques such as electrical resistance heating (ERH) are most advantageous for which contaminant class?

Chlorinated solvents with low vapor pressure in low-permeability soils (Correct answer)
Radioactive isotopes in bedrock
Heavy metals in surface soil
Dissolved nitrate in shallow aquifers

Correct answer: Chlorinated solvents with low vapor pressure in low-permeability soils

ERH heats the subsurface to increase volatility of chlorinated solvents, enabling vapor extraction even from tight, low-permeability formations where other methods fail.

Question 74: Which type of groundwater model is most appropriate for predicting the long-term migration of a dissolved contaminant plume in a heterogeneous aquifer?

Conceptual site model without quantitative predictions
Statistical regression model based on monitoring data alone
Analytical model assuming homogeneous, isotropic conditions
Numerical flow and transport model incorporating site-specific heterogeneity (Correct answer)

Correct answer: Numerical flow and transport model incorporating site-specific heterogeneity

Numerical models discretize the aquifer into cells that can represent spatial variability in hydraulic conductivity and other parameters affecting contaminant transport.

Question 75: Which best describes IHMM's role in relation to the CHMM credential after it is awarded?

IHMM transfers oversight to the credential holder's state environmental agency
IHMM monitors the CHMM's work by reviewing all signed compliance documents
IHMM has no further role once the credential is issued
IHMM maintains oversight through recertification requirements, a code of ethics, and disciplinary procedures (Correct answer)

Correct answer: IHMM maintains oversight through recertification requirements, a code of ethics, and disciplinary procedures

IHMM retains ongoing responsibility for the credential through recertification cycles, ethical standards enforcement, and a disciplinary process for violations.

Question 76: Which marking is required on a non-bulk package containing a hazardous material?

Shipper's EIN number
Proper shipping name and UN identification number (Correct answer)
Date of manufacture
Receiver's DUNS number

Correct answer: Proper shipping name and UN identification number

Non-bulk packages must be marked with the proper shipping name and UN/NA identification number per 49 CFR 172.301.

Question 77: A facility that generates between 100 and 1,000 kg of hazardous waste per month is classified under RCRA as which type of generator?

Small Quantity Generator (SQG) (Correct answer)
Very Small Quantity Generator (VSQG)
Large Quantity Generator (LQG)
Conditionally Exempt Generator (CEG)

Correct answer: Small Quantity Generator (SQG)

Small Quantity Generators (SQGs) generate between 100 and 1,000 kg of hazardous waste per month and have a 270-day accumulation limit.

Question 78: A CHMM is reviewing a facility's waste characterization. Which test method is used to determine if a solid waste exhibits the toxicity characteristic?

Toxicity Characteristic Leaching Procedure (TCLP) (Correct answer)
Multiple Extraction Procedure (MEP)
Synthetic Precipitation Leaching Procedure (SPLP)
EP Toxicity test

Correct answer: Toxicity Characteristic Leaching Procedure (TCLP)

The Toxicity Characteristic Leaching Procedure (TCLP) is the EPA-approved test method for determining whether a solid waste exhibits the toxicity characteristic.

Question 79: Which enforcement tool allows EPA to issue an order requiring immediate compliance with RCRA requirements without going to court?

Notice of violation
Consent decree
Compliance schedule order
Administrative compliance order (ACO) (Correct answer)

Correct answer: Administrative compliance order (ACO)

EPA can issue administrative compliance orders under RCRA Section 3008 directing violators to take corrective action without the need for court proceedings.

Question 80: The Emergency Response Guidebook (ERG) orange-bordered guides provide:

Cleanup and remediation procedures
Exact toxicological data for each chemical
Long-term health monitoring protocols
Initial isolation and protective action distances (Correct answer)

Correct answer: Initial isolation and protective action distances

ERG orange guides provide initial isolation distances and protective action distances for first responders.

Question 81: Which U.S. federal law primarily governs the management and disposal of solid and hazardous waste?

EPCRA
TSCA
CERCLA
RCRA (Correct answer)

Correct answer: RCRA

RCRA (Resource Conservation and Recovery Act) establishes the framework for managing solid and hazardous waste from cradle to grave.

Question 82: A facility is required to submit a Tier II report under EPCRA Section 312. What is the annual reporting deadline for Tier II submissions?

September 1
March 1 (Correct answer)
June 30
January 15

Correct answer: March 1

Tier II emergency and hazardous chemical inventory reports are due to SERC, LEPC, and local fire departments by March 1 each year.

Question 83: Under EPA's Risk Management Program (RMP) rule (40 CFR Part 68), a Program 3 process requires which of the following elements NOT required for Program 2?

Process Hazard Analysis using a specific OSHA PSM methodology (Correct answer)
Emergency response program
Offsite consequence analysis
Five-year accident history

Correct answer: Process Hazard Analysis using a specific OSHA PSM methodology

Program 3 requires a full PHA using OSHA PSM-listed methodologies (HAZOP, fault tree, etc.), whereas Program 2 allows simpler hazard reviews.

Question 84: Which of the following chemicals must NOT be stored together due to the risk of forming shock-sensitive explosive compounds?

Ethanol and methanol
Ammonia and bleach (sodium hypochlorite) (Correct answer)
Hydrochloric acid and sulfuric acid
Acetone and water

Correct answer: Ammonia and bleach (sodium hypochlorite)

Ammonia and bleach react to form chloramine gases and, in concentrated forms, can produce nitrogen trichloride, which is explosive and toxic.

Question 85: Which of the following is NOT required information on a Uniform Hazardous Waste Manifest?

Generator's EPA ID number
Chemical Oxygen Demand of the waste (Correct answer)
Waste characterization (DOT description)
Number and type of containers

Correct answer: Chemical Oxygen Demand of the waste

The manifest requires the EPA ID number, DOT shipping description, container count and type, and quantity — but not Chemical Oxygen Demand, which is a wastewater parameter.

Question 86: CERCLA, commonly known as Superfund, authorizes the EPA to do which of the following?

Clean up uncontrolled hazardous waste sites and pursue cost recovery (Correct answer)
Set occupational exposure limits for hazardous substances
Regulate the manufacture of new chemicals
Issue operating permits for hazardous waste facilities

Correct answer: Clean up uncontrolled hazardous waste sites and pursue cost recovery

CERCLA authorizes the EPA to investigate and clean up contaminated sites and recover costs from responsible parties.

Question 87: What placard is required when transporting 1,001 lbs or more of a Packing Group III flammable liquid?

No placard required at that weight
FLAMMABLE or COMBUSTIBLE placard (Correct answer)
POISON placard
DANGEROUS placard only

Correct answer: FLAMMABLE or COMBUSTIBLE placard

A FLAMMABLE or COMBUSTIBLE placard is required when 1,001 lbs or more of Packing Group III flammable liquids are loaded on a single vehicle.

Question 88: A very small quantity generator (VSQG) generates between 1 and 100 kg of hazardous waste per month. What manifest requirement applies?

VSQGs are fully exempt from all RCRA requirements
VSQGs must use a manifest for all off-site shipments
VSQGs are exempt from manifest requirements if waste is sent to a large quantity generator facility (Correct answer)
VSQGs must use a manifest only for acutely hazardous waste

Correct answer: VSQGs are exempt from manifest requirements if waste is sent to a large quantity generator facility

VSQGs are exempt from the manifest requirement provided their waste is sent to a facility that is a LQG under the same ownership, or to a permitted/licensed treatment or disposal facility.

Question 89: Under NFPA 30, the maximum quantity of flammable liquids (Class I) that may be stored in a flammable storage cabinet is:

No limit if cabinet is listed by UL
60 gallons (Correct answer)
120 gallons
30 gallons

Correct answer: 60 gallons

NFPA 30 and OSHA 1910.106 limit each flammable storage cabinet to no more than 60 gallons of Class I and II liquids combined.

Question 90: A facility's pre-emergency planning process under OSHA 29 CFR 1910.38 requires coordination with outside parties. Which outside entity is most critical to include when planning for a potential chemical release emergency at a fixed facility?

The facility's insurance carrier
The EPA regional administrator
The state department of transportation
The Local Emergency Planning Committee (LEPC) and local fire department (Correct answer)

Correct answer: The Local Emergency Planning Committee (LEPC) and local fire department

OSHA 1910.38 requires facilities to coordinate emergency plans with local fire, police, and emergency medical services, with the LEPC being the key planning body for hazmat incidents.

Question 91: According to OSHA's HAZWOPER standard (29 CFR 1910.120), what level of emergency responder is trained to take defensive actions, such as absorption or diking, to control a release from a safe distance?

Technician Level
Operations Level (Correct answer)
Specialist Level
Awareness Level

Correct answer: Operations Level

Operations Level responders are trained to respond in a defensive fashion to protect nearby persons, property, or the environment from the effects of the release. Their function is to contain the release from a safe distance, keep it from spreading, and prevent exposures. Awareness level personnel only identify and notify, while Technicians take offensive actions to stop the release, and Specialists provide specific expertise.

Question 92: Which record must accompany a hazardous waste shipment that is subject to Land Disposal Restrictions?

A signed generator certification and waste characterization notice sent to the receiving facility (Correct answer)
A state-issued transport authorization
An EPA waste code determination letter
A copy of the facility's RCRA permit

Correct answer: A signed generator certification and waste characterization notice sent to the receiving facility

LDR regulations require generators to send a one-time written notice and certification to the receiving TSD facility documenting that waste meets treatment standards.

Question 93: Under the OSHA Hazwoper standard (29 CFR 1910.120), an employee who serves as an Incident Commander at a hazardous substance emergency response must complete at least how many hours of specialized training?

The standard does not specify a minimum hour requirement for IC (Correct answer)
40 hours
24 hours
8 hours

Correct answer: The standard does not specify a minimum hour requirement for IC

OSHA 1910.120(q)(6)(v) requires Incident Commanders to have completed the operations-level requirements plus IC training, but does not specify a fixed minimum hour count for the IC role itself.

Question 94: Under RCRA Land Disposal Restrictions (LDRs), what must generators do before sending restricted hazardous waste to a land disposal unit?

Submit a waste minimization plan to EPA
Ensure the waste meets treatment standards and notify the receiving facility (Correct answer)
Apply for a delisting petition
Obtain an EPA variance only

Correct answer: Ensure the waste meets treatment standards and notify the receiving facility

Generators must ensure restricted wastes meet LDR treatment standards and provide a one-time written notice to the receiving TSDF.

Question 95: What does 'CHMM' stand for?

Chemical Handling and Materials Management
Certified Hazardous Materials Manager (Correct answer)
Certified Hazmat Mitigation Manager
Chemical and Hazardous Materials Monitor

Correct answer: Certified Hazardous Materials Manager

CHMM stands for Certified Hazardous Materials Manager, the credential awarded by IHMM.

Question 96: Under TSCA Section 8(e), a manufacturer or importer who obtains information that a chemical substance presents a substantial risk of injury must report to EPA within how many days?

15 calendar days
30 calendar days (Correct answer)
60 calendar days
90 calendar days

Correct answer: 30 calendar days

TSCA Section 8(e) requires companies to report substantial risk information to EPA within 30 calendar days of obtaining such information.

Question 97: A brownfields site developer wants to reuse a former dry-cleaning facility for retail use. Which remediation approach most efficiently manages residual PCE contamination while allowing site redevelopment?

Monitored natural attenuation with no institutional controls
Pump and treat operated for 50 years before redevelopment
Risk-based closure with land use controls and long-term monitoring (Correct answer)
Full excavation to background levels before any construction

Correct answer: Risk-based closure with land use controls and long-term monitoring

Risk-based closure with institutional controls allows development to proceed while managing residual contamination through deed restrictions and monitoring, balancing protection with economic reuse.

Question 98: A 'forbidden' hazardous material listed in the Hazardous Materials Table means:

The material requires a special permit to transport
The material must be escorted by law enforcement
The material is restricted to ground transport only
The material may not be transported in commerce under any circumstances (Correct answer)

Correct answer: The material may not be transported in commerce under any circumstances

Materials marked 'Forbidden' in the HMT are absolutely prohibited from transportation in commerce and no special permit can authorize their shipment.

Question 99: A driver transporting hazardous materials must keep the shipping papers within reach when:

At a weigh station
The vehicle is in motion (Correct answer)
Loading the vehicle
Filing trip reports

Correct answer: The vehicle is in motion

49 CFR 177.817 requires shipping papers to be within the driver's immediate reach while the vehicle is in motion.

Question 100: A hazardous waste facility's contingency plan must designate an Emergency Coordinator. Under 40 CFR 264.55, during an emergency, the Emergency Coordinator must notify which entity first?

The State environmental agency
The National Response Center (NRC) (Correct answer)
The Local Emergency Planning Committee (LEPC)
The facility's corporate headquarters

Correct answer: The National Response Center (NRC)

The Emergency Coordinator must immediately notify the National Response Center of any release that could threaten human health or the environment.

Question 101: When responding to an unknown chemical spill, CAMEO (Computer-Aided Management of Emergency Operations) is primarily used to:

Track real-time weather conditions for plume modeling
Identify chemicals, model dispersion, and plan emergency responses (Correct answer)
Calculate OSHA exposure action levels for responders
Coordinate inter-agency communication during an incident

Correct answer: Identify chemicals, model dispersion, and plan emergency responses

CAMEO is a suite of software tools used to plan for and respond to chemical emergencies, including chemical identification and modeling.

Question 102: Risk-based corrective action (RBCA) frameworks allow remediation to a site-specific risk level rather than a generic standard. What primary factor drives site-specific cleanup levels?

The age of the contamination
Exposure pathways, receptor populations, and contaminant toxicity (Correct answer)
The depth of the water table
The cost of the most expensive technology

Correct answer: Exposure pathways, receptor populations, and contaminant toxicity

RBCA tier calculations incorporate contaminant toxicity, site-specific exposure pathways, and sensitive receptors to derive protective cleanup levels tailored to actual risk.

Question 103: Under the Clean Air Act, National Emission Standards for Hazardous Air Pollutants (NESHAPs) regulate emissions of which category of pollutants?

Criteria pollutants like PM2.5 and ozone
Radioactive materials from nuclear plants
Greenhouse gases including CO2 and methane
Hazardous air pollutants (HAPs) such as benzene and mercury (Correct answer)

Correct answer: Hazardous air pollutants (HAPs) such as benzene and mercury

NESHAPs set emission standards for HAPs, which are air pollutants known or suspected to cause cancer or other serious health effects.

Question 104: What document serves as the official record of a hazardous waste shipment from generator to disposal facility?

Safety Data Sheet
Bill of lading
Uniform Hazardous Waste Manifest (Correct answer)
Land Disposal Restriction form

Correct answer: Uniform Hazardous Waste Manifest

The Uniform Hazardous Waste Manifest (EPA Form 8700-22) tracks hazardous waste from cradle to disposal and serves as the official shipment record.

Question 105: During a tabletop exercise for hazardous materials response planning, the primary objective is to:

Measure response times from initial notification to scene arrival
Discuss roles, responsibilities, and decision-making in a low-stress environment (Correct answer)
Deploy actual responders and equipment to simulate field conditions
Test the physical fitness of hazmat team members under stress

Correct answer: Discuss roles, responsibilities, and decision-making in a low-stress environment

Tabletop exercises are discussion-based and focus on clarifying roles, plans, and coordination without deploying personnel or equipment in the field.

Question 106: In industrial hygiene, the term 'action level' under OSHA standards typically represents:

The STEL averaged over 15 minutes
One-half the PEL, triggering additional monitoring and medical surveillance (Correct answer)
The PEL itself, requiring immediate corrective action
The IDLH concentration, requiring evacuation

Correct answer: One-half the PEL, triggering additional monitoring and medical surveillance

OSHA action levels (typically ½ PEL) trigger requirements for additional exposure monitoring, recordkeeping, and medical surveillance.

Question 107: Under EPA's RCRA land disposal restrictions (LDRs) found in 40 CFR Part 268, a generator must send which document to the receiving treatment or disposal facility along with a hazardous waste shipment?

A copy of the facility's RCRA operating permit
A signed Tier II chemical inventory report
An LDR notification and certification form (Correct answer)
An EPA Form 8700-12 (RCRA hazardous waste report)

Correct answer: An LDR notification and certification form

Generators must send an LDR notification and certification to the receiving facility documenting the waste's treatment standards and compliance status.

Question 108: Under RCRA, what is the maximum accumulation time for large quantity generators (LQGs) before hazardous waste must be shipped off-site?

180 days
30 days
90 days (Correct answer)
60 days

Correct answer: 90 days

LQGs may accumulate hazardous waste on-site for no more than 90 days without a storage permit.

Question 109: A site has chlorinated solvent DNAPL contamination. Which technology directly targets the dense non-aqueous phase liquid source zone most effectively?

Pump and treat with activated carbon
In situ chemical oxidation (ISCO) (Correct answer)
Monitored natural attenuation
Air sparging alone

Correct answer: In situ chemical oxidation (ISCO)

ISCO delivers oxidants such as permanganate, persulfate, or hydrogen peroxide directly into the source zone to chemically destroy DNAPL-phase contaminants.

Question 110: The Emergency Response Guidebook (ERG) is primarily used to:

Guide first responders during the initial phase of a hazmat transportation incident (Correct answer)
Calculate reportable quantities for spills
Classify waste under RCRA
Train hazmat employees on packaging requirements

Correct answer: Guide first responders during the initial phase of a hazmat transportation incident

The ERG provides first responders with guidance on initial protective actions and hazard identification during the first 30 minutes of a hazmat incident.

Question 111: Which regulation governs the transport of hazardous materials by rail in the United States?

40 CFR Part 263 (Hazardous Waste Transporter Standards)
49 CFR Part 395 (Hours of Service)
29 CFR 1910.120 (HAZWOPER)
49 CFR Parts 171–180, enforced by FRA for rail (Correct answer)

Correct answer: 49 CFR Parts 171–180, enforced by FRA for rail

The Hazardous Materials Regulations in 49 CFR Parts 171–180 apply to all modes including rail, with FRA providing enforcement oversight for the rail mode.

Question 112: A chemical manufacturing plant needs to store a new, highly flammable liquid (OSHA Category 1). According to OSHA standard 29 CFR 1910.106, what is the maximum quantity of this liquid that can be stored in a single approved flammable storage cabinet?

30 gallons
60 gallons (Correct answer)
120 gallons
25 gallons

Correct answer: 60 gallons

OSHA's standard for flammable liquids, 29 CFR 1910.106, specifies that not more than 60 gallons of Category 1, 2, or 3 flammable liquids shall be stored in any one storage cabinet.

Question 113: Which waste code category covers wastes from specific industries such as petroleum refining and wood preserving?

U-listed wastes
F-listed wastes
P-listed wastes
K-listed wastes (Correct answer)

Correct answer: K-listed wastes

K-listed wastes are source-specific hazardous wastes generated by specific industrial processes such as petroleum refining, wood preserving, and inorganic chemical production.

Question 114: A facility manager discovers that drums containing hazardous waste have been stored in a satellite accumulation area (SAA) for more than 60 days. Under 40 CFR 262.15, this situation most likely indicates a violation because:

SAAs require a RCRA storage permit after 30 days
SAAs are exempt from all time limits under EPA regulations
The 60-day limit applies only to large quantity generators in attainment areas
Drums at an SAA must be moved to the central accumulation area once the container limit is reached, regardless of time (Correct answer)

Correct answer: Drums at an SAA must be moved to the central accumulation area once the container limit is reached, regardless of time

SAAs are not subject to time limits per se, but containers must be moved once the volume limit (55 gallons for non-acute, 1 quart for acute) is reached—a long accumulation time suggests containers have exceeded limits.

Question 115: Under RCRA, used oil that is mixed with listed hazardous waste is regulated as:

A recyclable material exempt from RCRA
Used oil only, if the mixture is less than 50% hazardous waste
A hazardous waste subject to full Subtitle C requirements (Correct answer)
A universal waste under 40 CFR Part 273

Correct answer: A hazardous waste subject to full Subtitle C requirements

Used oil mixed with listed hazardous waste becomes subject to full RCRA Subtitle C hazardous waste regulations, not just the used oil management standards.

Question 116: How frequently must RCRA-permitted TSD facilities conduct and document inspections of their facility and equipment?

Quarterly
Annually
Monthly
At least daily for areas with potential for discharge (Correct answer)

Correct answer: At least daily for areas with potential for discharge

RCRA requires TSD facilities to inspect areas where releases could occur at least daily, with results logged in the facility inspection log.

Question 117: A facility stores 10,000 gallons of diesel fuel in an above-ground storage tank. Under EPA's Spill Prevention, Control, and Countermeasure (SPCC) rule, what is the minimum secondary containment volume required for a single tank?

125% of the tank's capacity
100% of the tank's capacity
50% of the tank's capacity
110% of the tank's capacity (Correct answer)

Correct answer: 110% of the tank's capacity

EPA SPCC regulations require secondary containment capable of holding 110% of the largest single tank's capacity.

Question 118: Which label element is specifically required on hazardous waste containers at the point of accumulation under RCRA?

The quantity in the container and the generator's address
The words 'Hazardous Waste' and the accumulation start date (Correct answer)
The EPA waste code and accumulation start date
The generator's EPA ID number and the waste's physical state

Correct answer: The words 'Hazardous Waste' and the accumulation start date

RCRA requires containers to be labeled 'Hazardous Waste' and marked with the date accumulation began, among other required information.

Question 119: When developing a site safety plan for a hazardous materials response, the first step should be to:

Establish decontamination corridors
Notify off-site medical facilities
Identify and characterize the hazard using available information (Correct answer)
Assign personal protective equipment levels to all responders

Correct answer: Identify and characterize the hazard using available information

Hazard identification and characterization must precede PPE selection and other protective measures to ensure appropriate safeguards are chosen.

Question 120: What is the purpose of biological monitoring in an occupational health program?

To measure ambient air concentrations of hazardous substances near workers
To determine surface contamination levels on work equipment
To measure the actual internal dose of a toxicant or its metabolites in workers' blood, urine, or exhaled air (Correct answer)
To assess the effectiveness of engineering controls at the source

Correct answer: To measure the actual internal dose of a toxicant or its metabolites in workers' blood, urine, or exhaled air

Biological monitoring measures internal body burden via biomarkers in biological specimens, reflecting actual absorbed dose from all exposure routes combined.

Question 121: What information must appear in the basic description of a hazardous material on a shipping paper?

Trade name, manufacturer, and SDS number
Carrier name, route, and delivery address
ERG guide number, flash point, and NFPA rating
UN/NA number, proper shipping name, hazard class, and packing group (if applicable) (Correct answer)

Correct answer: UN/NA number, proper shipping name, hazard class, and packing group (if applicable)

The basic description per 49 CFR 172.202 must list the UN/NA number, proper shipping name, hazard class or division, and packing group in that sequence.

Question 122: What does IDLH stand for, and what is its significance in hazmat emergency response?

Initial Decontamination Level Hazard — the threshold for decon operations
Incident Dispatch Logistics Hierarchy — the command structure trigger
Integrated Dose Limit for Hazmat — the cumulative exposure limit
Immediately Dangerous to Life or Health — the concentration requiring immediate evacuation (Correct answer)

Correct answer: Immediately Dangerous to Life or Health — the concentration requiring immediate evacuation

IDLH (Immediately Dangerous to Life or Health) is the maximum concentration from which one could escape within 30 minutes without irreversible health effects.

Question 123: Under EPA's Risk Management Program (RMP), a Program 3 process is subject to the most stringent requirements, which include:

Only an emergency response program and five-year accident history
Tier II reporting and community notification exercises
Hazard review and emergency response program only
Prevention program including PHA, MOC, pre-startup safety review, and mechanical integrity checks (Correct answer)

Correct answer: Prevention program including PHA, MOC, pre-startup safety review, and mechanical integrity checks

Program 3 applies PSM-equivalent prevention requirements including PHA, MOC, mechanical integrity, and pre-startup safety reviews for the highest-risk processes.

Question 124: What is the purpose of the 'cold zone' (support zone) at a hazmat incident?

Where command post, staging, and support functions are located (Correct answer)
Where decontamination of personnel occurs
Where responders don suits before entry
Where emergency medical triage takes place for contaminated victims

Correct answer: Where command post, staging, and support functions are located

The cold zone is free of contamination and houses the incident command post, staging areas, and support operations.

Question 125: When a hazardous waste is determined to be a mixture of a listed waste and a solid waste, RCRA applies which rule?

Mixture rule (Correct answer)
De minimis exemption
Derived-from rule
Contained-in policy

Correct answer: Mixture rule

The mixture rule states that any mixture of a listed hazardous waste and a solid waste is itself a listed hazardous waste, regardless of the concentration of the listed waste.

Question 126: A Large Quantity Generator (LQG) of hazardous waste signs a hazardous waste manifest on July 1, 2024, when the waste is transported off-site. According to 40 CFR 262.40, what is the minimum period the generator must retain a copy of this manifest?

For at least five years from the date the waste was accepted by the designated facility.
For at least three years from the date the waste was accepted by the initial transporter. (Correct answer)
Indefinitely, for the life of the facility.
For at least one year from the date the waste was accepted by the initial transporter.

Correct answer: For at least three years from the date the waste was accepted by the initial transporter.

40 CFR 262.40(a) requires generators to keep a copy of each signed manifest for at least three years from the date the waste was accepted by the initial transporter. This record is crucial for demonstrating proper 'cradle-to-grave' management of the hazardous waste.

Question 127: Under RCRA, which of the following is classified as a universal waste?

Spent pickle liquor from steel finishing
Wastewater treatment sludge from electroplating
Chlorinated solvents from degreasing operations
Batteries, pesticides, mercury-containing equipment, and lamps (Correct answer)

Correct answer: Batteries, pesticides, mercury-containing equipment, and lamps

Universal wastes under 40 CFR Part 273 include batteries, pesticides, mercury-containing equipment, and lamps, which are subject to streamlined management standards.

Question 128: Which of the following best describes a 'Very Small Quantity Generator' (VSQG) under RCRA's 2016 Generator Improvements Rule?

A generator that produces less than 100 kg of hazardous waste per month
A generator exempt from all RCRA requirements
A generator that produces 100 kg or less of hazardous waste per calendar month and stores no more than 1,000 kg on-site (Correct answer)
A generator that produces less than 1 kg of acute hazardous waste per month

Correct answer: A generator that produces 100 kg or less of hazardous waste per calendar month and stores no more than 1,000 kg on-site

VSQGs generate 100 kg or less of hazardous waste and 1 kg or less of acute hazardous waste per month under 40 CFR 262.14.

Question 129: Which EPA regulation requires facilities to report accidental releases of extremely hazardous substances to state and local emergency planning committees?

TSCA Section 8(e)
EPCRA Section 304 (Correct answer)
CAA Section 112(r)
RCRA Section 3010

Correct answer: EPCRA Section 304

EPCRA Section 304 mandates immediate notification of releases of extremely hazardous substances above reportable quantities.

Question 130: What is the minimum required initial HAZWOPER training for workers at uncontrolled hazardous waste cleanup sites who may be exposed to hazardous substances?

24 hours
16 hours
8 hours
40 hours (Correct answer)

Correct answer: 40 hours

OSHA 29 CFR 1910.120(e) requires 40 hours of initial off-site training plus 3 days of supervised field experience for general site workers at uncontrolled hazardous waste sites.

Question 131: A drum of ignitable hazardous waste must be kept how far from the facility property line under RCRA storage requirements?

No specific setback is required
100 feet
50 feet (Correct answer)
25 feet

Correct answer: 50 feet

RCRA regulations under 40 CFR 265.17 require that ignitable or reactive wastes be stored at least 50 feet from the facility's property line.

Question 132: A CHMM is evaluating whether to implement a closed-loop solvent recovery system. From a pollution prevention standpoint, this is classified as:

Pollution control equivalent to installing end-of-pipe treatment
Source reduction because it eliminates solvent purchases entirely
Treatment to reduce the toxicity of the solvent before reuse
Recycling — preferred over disposal but below source reduction in the P2 hierarchy (Correct answer)

Correct answer: Recycling — preferred over disposal but below source reduction in the P2 hierarchy

Closed-loop solvent recovery is an on-site recycling activity, which is preferable to disposal but ranks below true source reduction (eliminating solvent use) in the EPA's P2 hierarchy.

Question 133: Which of the following best describes the purpose of a Process Hazard Analysis (PHA) under PSM regulations?

To systematically identify, evaluate, and control hazards associated with a covered process (Correct answer)
To establish threshold quantities for regulatory applicability determinations
To document employee training records for hazardous process operations
To calculate the total quantity of hazardous chemicals on-site for EPCRA reporting

Correct answer: To systematically identify, evaluate, and control hazards associated with a covered process

A PHA is a structured examination of a process to identify hazards, evaluate consequences, and recommend safeguards to prevent or mitigate incidents.

Question 134: A compatibility requirement between hazardous materials during transport means:

Materials of the same hazard class must always be co-loaded
All hazardous materials must be in the same compartment
Incompatible materials can be co-loaded if segregated by 1 foot
Certain hazardous materials must not be loaded or stored together because they could react dangerously (Correct answer)

Correct answer: Certain hazardous materials must not be loaded or stored together because they could react dangerously

Segregation requirements in 49 CFR 177.848 prohibit co-loading materials that could react violently, produce flammable gases, or generate toxic products if accidentally mixed.

Question 135: Under OSHA 29 CFR 1910.120, which level of training is required for hazardous materials emergency responders who take defensive actions without actually trying to stop the release?

Hazmat Technician
First Responder Operations (Correct answer)
Hazmat Specialist
First Responder Awareness

Correct answer: First Responder Operations

First Responder Operations level training is required for those who respond defensively to releases without trying to stop them.

Question 136: Which document formally records the deed restriction or land use control (LUC) placed on a remediated property to limit future land use?

Environmental covenant or deed restriction (Correct answer)
Brownfields assessment report
Remedial action plan
Notice of violation

Correct answer: Environmental covenant or deed restriction

An environmental covenant or deed restriction is recorded with the property deed to legally restrict land use and protect the integrity of the remedy.

Question 137: What is the primary regulatory mechanism that allows hazardous waste to be reclaimed and reused without full RCRA Subtitle C regulation?

Land Disposal Restriction variance
Contained-in policy
Derived-from rule
Hazardous waste recycling exemption (Correct answer)

Correct answer: Hazardous waste recycling exemption

Certain hazardous waste recycling activities are excluded or exempt from full RCRA regulation under 40 CFR 261.2 and related provisions.

Question 138: A radioactive material's transport index (TI) is used to:

Control radiation exposure by limiting the number of packages that can be co-loaded (Correct answer)
Determine the flash point of the material
Identify the specific isotope in the package
Calculate the shipper's liability under CERCLA

Correct answer: Control radiation exposure by limiting the number of packages that can be co-loaded

The Transport Index (TI) is a number assigned to radioactive packages that controls the maximum radiation level at 1 meter and limits co-loading to protect workers and the public.

Question 139: Which OSHA recordkeeping standard requires employers to record work-related injuries and illnesses on Forms 300, 300A, and 301?

29 CFR 1910.1200
29 CFR 1926.50
29 CFR 1910.20
29 CFR 1904 (Correct answer)

Correct answer: 29 CFR 1904

29 CFR 1904 is OSHA's recordkeeping rule, mandating injury and illness logs on the 300 series forms for covered employers.

Question 140: The Oil Pollution Act of 1990 (OPA 90) primarily applies to spills of oil into which environment?

Hazardous waste landfills
Groundwater aquifers only
Publicly owned treatment works
Navigable waters and adjoining shorelines (Correct answer)

Correct answer: Navigable waters and adjoining shorelines

OPA 90 addresses liability, compensation, and cleanup of oil spills into navigable waters, along shorelines, and in the exclusive economic zone.

Certified Hazardous Materials Manager (CHMM)

The CHMM examination, administered by the Institute of Hazardous Materials Management (IHMM), evaluates minimal competency in hazardous materials management across 12 content domains covering planning, transportation, storage, regulatory compliance, remediation, and health and safety. Candidates must achieve a scaled score of 700 out of 1000 to earn certification.

140

Questions

180 min

Time Limit

70%

To Pass

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