V irginia Wastewater Works Operator INSERT COVER · NTN before you can schedule your exam. Photo approval may take up to 10 business days. Mail Option The passport compliant photo

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Virginia Wastewater Works Operator Classes 1 - 4

Candidate Information Bulletin (CIB)


Introduction

Thank you for participating in the Commonwealth of Virginia Department of Professional and Occupational

Regulation (DPOR) licensing process. To obtain your license, the Board for Waterworks and Wastewater

Works Operators and Onsite Sewage System Professionals (DPOR) requires you to pass a written exam.

Read this entire Candidate Information Bulletin (CIB). It has information you need to complete the exam

process. You can also find this information online at ntnlicensingexams.com.

This Candidate Information Bulletin (CIB) includes written exam information.

National Testing Network is contracted to administer the exams and provide candidate services for the DPOR.

To submit a question, click the “Contact Support” link on ntnlicensingexams.com.

http://ntnlicensingexams.com/



E X A M R E Q U I R E M E N T S

Requirements to

Register for an Exam

Candidates must submit a Virginia Wastewater Works Operator License

application to the DPOR. The application form can be found at

www.dpor.virginia.gov. All license requirements must be completed and

approved by DPOR prior to registering or taking the exam.

Required

Identification

For entry into your exam, you are required to provide originals of qualifying pieces

of identification. Your name and date of birth on your identification are required

to match your name and date of birth exactly as listed in your online account.

Two forms of government issued identification (see below) are required.

o One piece of identification must include a current photo.

Your name is required to match on both forms unless you also bring

documentation of name change (for example, official court document

indicating name change, etc.).

Your date of birth is required to match on a minimum of one piece of

identification.

If you are unable to meet the identification requirements noted above,

please contact National Testing Network (NTN) at 1-866-563-3882.

You are required to provide biometric authentication (fingerprint) and

your digital signature when you check-in on exam day.

Examples of Items

Accepted as

Identification

Original

Identification With

Photo

U.S. or foreign driver’s license – valid, or expired within one year

U.S. armed services ID card – with photo and signature

U.S. or foreign passport – valid, or expired within one year

Federal or state employee ID card – valid, shows your signature and photo

State issued ID card with photo – valid, or expired within one year

Immigration ID – valid, with signature from the U.S. Citizenship and

Immigration Service

U.S. Certificate of Citizenship or Naturalization – with signature and photo

U.S. Permanent Resident Card – valid, with your signature and photo

Tribal ID card

Original

Identification

Without Photo

Certified birth certificate – original or certified document

Social Security card (not laminated) or Tax Payer ID Letter

U.S. government-issued work visa – valid

Voter’s card

Medicare card

Social Security Administration receipt of name change / replacement card

Examples of Items

NOT Accepted as

Identification

Copies of ID

Credit cards

Gun permit

Bus passes

Costco card

Car insurance card

Wastewater Operator License

Jury summons

Car registration

http://www.dpor.virginia.gov/


S C H E D U L I N G A N D T A K I N G T H E E X A M S

Getting Started Your application must be approved by the DPOR prior to registering for an exam. The DPOR will notify you in writing of your eligibility to sit for the examination and include information on the examination registration process. You may register for the exam by visiting ntnlicensingexams.com, finding the program you are testing for and clicking the “Create Account” button. During the registration process you will be required to upload (or mail) a passport

compliant photo as described below.

Passport Photo You need to upload or mail a professional passport compliant 2" x 2" color photo taken within the last six months to reflect your current appearance. This can be done on your online account. The photo must meet the following requirements:

Sized so that your head is approximately one inch from the bottom of the chin to the top of the head

Taken in front of a plain white background

Be a full-face view, directly facing the camera with a neutral facial expression

The photo you upload must meet these requirements and be approved by NTN before you can schedule your exam.

Photo approval may take up to 10 business days.

Mail Option The passport compliant photo may be mailed to NTN at the following address:

National Testing Network 18720 33rd Avenue West Lynnwood, WA 98037 Mail submittal of information may delay approval process.

Exam Locations and Scheduling

Once your photo has been approved you will be eligible to schedule your exam

online at ntnlicensingexams.com. You may log in to your account to schedule your

exam. Choose any available time and date at the location you prefer. You must

schedule the exam yourself online. Walk-in candidates are not admitted to exams

and testing centers cannot schedule candidates.

Candidate

Responsibility

As a candidate, it is your responsibility to:

Read and be familiar with this Candidate Information Bulletin (CIB).

Once you receive your approval letter from the DPOR, create your own

account, personal username and password at ntnlicensingexams.com.

Go online to upload a passport compliant photo or mail one to the address

above.

Schedule your exam online.

http://www.ntnlicensingexams.com/




S C H E D U L I N G A N D T A K I N G

Payments The exam fee is $85.00. All retests are $85.00 each. You can pay by credit card

online (Visa, MasterCard). If you cannot pay by credit card, log into your account at

ntnlicensingexams.com. Click on “Pay by Check” and print the form you need. Send

the completed form, along with your money order or cashier’s check, to National

Testing Network (personal checks or cash will not be accepted). Within 10 business

days, you will receive a voucher via email you can use to go online and schedule

your exam.

Special

Accommodations

Requests

For those requesting a special accommodation due to disability, such request can

be considered in accordance with the Americans with Disabilities Act (ADA). You

may request accommodations by completing the “Request for Accommodations

Form (Parts A and B)” when you log into your account online for the first time.

Submit all completed documentation to National Testing Network by mail or fax

(425-774-0829).

National Testing Network

Accommodation Request

18720 33rd Avenue West

Lynnwood, WA 98037

All sections of the form must be completed; if one of the forms does not apply,

please mark as "not applicable."

Requests must be made in advance and supported by documentation from a

physician. Requests must be made and accepted prior to scheduling your exam

with accommodations. You will be notified of the result of your request within 10

business days of receipt of your accommodation request.

Languages The exams are only offered in English.

Arrival Time Make sure you have the correct date, time, and location of your exam. Arrive 30

minutes before your scheduled exam time so you have plenty of time for check-in.

Late Arrival Policy Entrance to the exam closes at exam time. Candidates who arrive late will not be

admitted. No exam will be delayed waiting for a late arrival. If you are late or do

not show for your exam, you must go online to reschedule and pay for another

exam to take at a later time.

Getting Your License Once you have passed your exam, DPOR will be notified by NTN of your passing

score. Applicants who successfully pass the examinations should receive their

license in the mail from the DPOR, with no additional action typically required on

their part, within seven to 10 business days.

Need Help? If you need help with this process, please contact us anytime by clicking the

“Contact Support” link on ntnlicensingexams.com, or call 866-563-3882.

http://www.ntnlicensingexams.com/



E X A M R U L E S

Study Materials &

Calculators

You may bring with you and use reference books and training manuals during the exam. All reference materials you bring to the exam must relate to the content outline found within this Candidate Information Bulletin (CIB), pages 9 & 10. Reference books and training materials may be highlighted, underlined, and/or indexed prior to the exam. Notes previously written in the margins are acceptable including any relevant formulas. Electronic references are prohibited (e.g. no laptops or tablets). Reference materials that include practice tests and/or test questions are not allowed. Handwritten notes, loose papers, legal pads or notepads of any kind are not allowed in the exam room; handwritten notes inserted into training manuals must be removed prior to entering the exam room. Handouts provided by the trainers and made part of the training manual are allowed. If candidates have written notes covering the inside covers and/or any blank pages in the reference books or manuals, they must be erased, scratched through or covered prior to entering the examination room or those references will be confiscated by the proctor. The following list of tabs may be used. Acceptable Tabs:

Avery Swift Tabs Self-Adhesive Permanent Plastic Tabs

Redi-Tag Self-Stick Permanent Adhesive Index Tabs

Unacceptable Tabs:

Post-It Index Flags

Post-It Flags

Non-programmable calculators are allowed in the exam room. NOTICE: Effective Feb 1, 2017, handwritten notes will no longer be allowed in reference books/training materials brought into the test centers.

Personal Belongings No wallets, purses, backpacks, hats, caps, visors (with the exception of religious

apparel), hooded clothing, coats, shawls, heavy jackets or other personal belongings are

allowed in exam rooms. Such items may not be accessed during the exam. National

Testing Network (NTN) assumes no responsibility or liability for any personal items in

the facility.

No Digital Devices No digital devices (cell phones, pagers, mp3 players, USB drives, cameras, voice

recorders, digital watches, etc.), with the exceptions of required medical devices and a

non-programmable calculator, are allowed in exam room. Non-programmable

calculators must be silent and battery-operated. Non-programmable calculators must

not be able to print or have a keyboard containing the alphabet.

No Weapons No weapons of any kind are allowed in the facility.

Talking During the exam, speak only to exam proctors. Do not speak to other candidates.

(Raise your hand if you need assistance during an exam.)


E X A M R U L E S

No Cheating Cheating or falsifying information is not tolerated and will result in immediate dismissal

from the exam site. In addition, the DPOR will be provided with all available information

pertinent to the incident which may result in denial of your application for licensure.

No Disruptions No disruptive behavior or unnecessary noise is allowed.

No Drinking, Eating,

Chewing, or Smoking

No eating, drinking, gum chewing, toothpick chewing, or smoking is allowed. No food or

beverages may be brought into the exam room. (Drinking water is available.)

Accommodations will be allowed with appropriate documentation.

Stay Within Assigned

Workstations

Candidates and their test items must remain within the boundaries of their assigned

workstation. Bending or leaning into someone else’s workstation is not allowed.

Breaks No timeout for breaks is given during the exam. You must get permission from an exam

proctor to leave your exam (e.g. for a restroom break).

No Companions or

Visitors

Candidates are not allowed to have companions or visitors in the building.

Rule Violations Any candidates who violate exam rules or who do not show respect for the professional

exam setting, will be required to leave the exam site. Their opportunity to sit for the

exam will be forfeited. Their exam will be voided and will not be scored. The exam fee

will not be refunded. Those who cheat may also be responsible for damages based on

copyright/trademark law violations. Violations can result in additional suspensions from

testing or affect receiving a license.

Appeals Process National Testing Network (NTN) will consider appeals regarding significant procedural

errors or adverse environmental conditions during exam administration. Please contact

National Testing Network Customer Support within 15 calendar days after the date of

notification of exam results. The appeal must be made in writing and can be sent to

[email protected] or to Appeals Process, National Testing Network,

18720 33rd Avenue West, Lynnwood, WA 98037.

mailto:[email protected]


F R E Q U E N T L Y A S K E D Q U E S T I O N S

How and when do I

find out about my

exam results?

Your exam results, including your performance in each content area, will be posted

on your online account page within 10 business days after you complete your exam.

The employees at exam locations do not have access to exam scores and cannot

answer questions related to your performance on any exam.

What is the passing

score?

Passing score for the written exam is 75. Candidates scoring less than 75 on the

written exam must take the entire written exam again.

When can I retake an

exam?

If you do not receive a passing score on your exam you can immediately reschedule

another exam.

What is the

cancellation and

refund policy?

Exam fees are non-refundable. Exams can be rescheduled up to 7 calendar days prior

to your exam date by clicking the “Contact Support” link on ntnlicensingexams.com

and submitting a request. Schedule changes are not allowed outside of the 7 day

policy.

What is the policy on

extreme weather and

emergency closure?

In case of extreme weather conditions or other emergencies that warrant closure of

any testing center, you will be notified by the testing center as soon as

possible. When possible, you will be notified at least two hours before your

scheduled time. After you receive notification from the testing center, exams can be

rescheduled by clicking the “Contact Support” link on ntnlicensingexams.com and

submitting a weather re-schedule request.

Do I have to take the

exam for things that

are not taught in my

program?

You must be prepared for testing in all areas outlined for your Class. This information

is found on pages 12-19 of the Candidate Information Bulletin (CIB).




Wastewater Works

Operator Exam

I N T R O D U C T I O N A N D R E F E R E N C E M A T E R I A L S

The exam covers professional knowledge and laws that regulate wastewater works operators.

Study materials for the Wastewater Works Operator Classes 1 - 4 exams include:

1. Standard Methods for Examination of Water & Wastewater, 2012, 22nd edition, American Water Works Association, Denver, CO 80235 (800.926.7335) http://www.awwa.org/searchresults.aspx?q=28493774

2. Manual of Practice 11: Operation of Municipal Wastewater Treatment Plants, 6th edition, 2008, Water Environment Federation, Alexandria, VA (800.666.0206) http://accessengineeringlibrary.com/browse/operation-of-municipal-wastewater-treatment-plants-mop-no-11-sixth-edition

3. Advanced Waste Treatment, 2002, Office of Water Programs, California State University, Sacramento Foundation, Sacramento, CA 95819-6025 (916.278.6142) www.amazon.com/advanced-waste-treatment-kenneth-kerri/dp/188470140X

4. Activated Sludge: Manual of Practice No. OM-9, 2002, 2nd edition, Activated Sludge Task Force, Water Environment Federation, Alexandria, VA (800.666.0206) www.e-wef.org/onlinestore/productdetail/tabid/55/productid/3693/subsystem/inv/productcode/mm2023/default.aspx

5. Basic Wastewater License Review: Volumes 1 & 2, 5th edition, Office of Operator Training, Virginia Department of Environmental Quality, Richmond, VA 23219 (804.698.4000) http://www.deq.virginia.gov/Programs/Water/WastewaterAssistanceTraining/TrainingManuals.aspx

6. Advanced Wastewater License Review, 5th edition, Office of Operator Training, Virginia Department of Environmental Quality, Richmond, VA 23219 (804.698.4000) http://www.deq.virginia.gov/Programs/Water/WastewaterAssistanceTraining/TrainingManuals.aspx

7. Virginia Administrative Code, Title 9, Agency 25, chapter 25, section 10: Virginia Permit Regulations, 2012 http://register.dls.virginia.gov/details.aspx?id=3081

8. Code of Federal Regulations, Title 40, Part 136: Sampling & Testing Guidelines (866.512.1800) http://www.ecfr.gov/cgi-bin/text-idx?tpl=/ecfrbrowse/Title40/40cfr136_main_02.tpl

http://www.awwa.org/searchresults.aspx?q=28493774

http://accessengineeringlibrary.com/browse/operation-of-municipal-wastewater-treatment-plants-mop-no-11-sixth-edition

http://accessengineeringlibrary.com/browse/operation-of-municipal-wastewater-treatment-plants-mop-no-11-sixth-edition

http://www.amazon.com/advanced-waste-treatment-kenneth-kerri/dp/188470140X

http://www.amazon.com/advanced-waste-treatment-kenneth-kerri/dp/188470140X

http://www.e-wef.org/onlinestore/productdetail/tabid/55/productid/3693/subsystem/inv/productcode/mm2023/default.aspx



http://www.deq.virginia.gov/Programs/Water/WastewaterAssistanceTraining/TrainingManuals.aspx

http://www.deq.virginia.gov/Programs/Water/WastewaterAssistanceTraining/TrainingManuals.aspx

http://register.dls.virginia.gov/details.aspx?id=3081

http://www.ecfr.gov/cgi-bin/text-idx?tpl=/ecfrbrowse/Title40/40cfr136_main_02.tpl


9. Code of Federal Regulations, Title 40, chapter 503: Bio solids (866.512.1800) http://www.ecfr.gov/cgi-bin/text-idx?tpl=/ecfrbrowse/Title40/40cfr503_main_02.tpl

10. Code of Federal Regulations – 29, parts 1900 to 1910.000, July 1, 2004 revision (866.512.1800) http://bookstore.gpo.gov/CFR

11. Manage for Success: Effective Utility Leadership Practices, 2005, Office of Water Programs, California State University, Sacramento Foundation, Sacramento, CA 95819-6025 (916.278.6142) www.owp.csus.edu/courses/management/manage-for-success-effective-utility-leadership-practices.php

12. Manual on the Causes & Control of Activated Sludge Bulking, Foaming & Other Solids Separation Problems, 3rd edition, 2003, by D. Jenkins, M. Richard, & G. Daigger, CRC Press, 2000 NW Corporate Blvd, Boca Raton, FL 33431 (800.272.7737) www.crcpress.com/product/isbn/9781566706476

13. Prime Movers: Engines, Motors, Turbines, Pumps, Blowers, & Generators. Manual of Practice OM, 1984, Water Environment Foundation, Alexandria, VA 22314-1994 (800.666.0206) www.amazon.com/prime-movers-generators-pollution-federation/dp/0943244560

14. Operation of Wastewater Treatment Plants: A Field Study Training Program, volume 2, 7th edition, 2007, California State University, Sacramento Foundation, (916.278.6142) www.owp.csus.edu/courses/wastewater/operation-of-wastewater-treatment-plants-vol-ii.php

15. Operation of Wastewater Treatment Plants: A Field Study Training Program, volume 1, 7th edition, 2008, California State University, Sacramento Foundation, (916.278.6142) www.owp.csus.edu/courses/wastewater/operation-of-wastewater-treatment-plants-vol-i.php

16. Virginia Occupational Safety & Health Program (VOSH), chapters 16 VAC 25-60-10, 16 VAC 25-140-10, 16 VAC 25-150-10, 16 VAC 25-160-10, & 16 VAC 25-170-10, excerpts included. Virginia modifications to federal OSHA rules, Virginia Occupational Safety & Health Enforcement, Department of Labor & Industry, Manassas, VA 20109 (703.392.0900) http://www.doli.virginia.gov/vosh_enforcement/vaunique_standards.html

If a test question answer could differ because of conflicting information in test reference sources, a legal

requirement such as a code, law or regulation overrides any other reference. If two legal requirements appear

to conflict, the state-specific code, law, or regulation overrides the national one. Information from sources on

the test reference list overrides information from other sources or persons.



http://bookstore.gpo.gov/CFR

http://www.owp.csus.edu/courses/management/manage-for-success-effective-utility-leadership-practices.php

http://www.owp.csus.edu/courses/management/manage-for-success-effective-utility-leadership-practices.php

http://www.crcpress.com/product/isbn/9781566706476

http://www.amazon.com/prime-movers-generators-pollution-federation/dp/0943244560

http://www.owp.csus.edu/courses/wastewater/operation-of-wastewater-treatment-plants-vol-ii.php

http://www.owp.csus.edu/courses/wastewater/operation-of-wastewater-treatment-plants-vol-i.php

http://www.doli.virginia.gov/vosh_enforcement/vaunique_standards.html


E X A M A D M I N I S T R A T I O N

Exam Time 4 hours

Computerized Testing The exam is computer-administered. You must be able to use a mouse and be

familiar with basic keyboarding. Exam administrators will give clear instructions and

can help if you have trouble using the computer. During your exam, you will be able

to go back to any question and review and change your answer, if needed.

Languages The exam is in English.

T I P S F O R T A K I N G T H E E X A M

Instructions Thoroughly read the instructions before you begin.

Read questions thoroughly

Read each question carefully before you answer it. The most common reason

people miss questions when they know the material is that they do not read the

questions carefully.

Read all answers before choosing

Read all answers before making your choice to ensure you select the most

appropriate answer.

Answer every question

Rule out the answers you know are wrong and then make the best available

choice.

Don’t spend too much time on one question

If you have a hard time with a particular question, move on and make a note to

come back to that question later.

Double check answers If you finish early, use the remaining time to review and double-check your

answers.


D E T A I L E D E X A M C O N T E N T : W A S T E W A T E R W O R K S O P E R A T O R C L A S S 1

The Wastewater Works Operator Class 1 exam contains 75 multiple-choice questions that come from the areas

listed in this section. The number of scored items that cover each topic area is shown in the left column. All

topic areas were rated as important to successful job performance in a survey of Virginia licensed wastewater

works operators.

Wastewater Operations

10 items

Evaluate incoming wastestream/sidestream characteristics - Biological/chemical - Color - Flow pattern - Mixing pattern - Odor - Solids concentration - Volume

Sample collection and analysis - Alkalinity - Bacteriological testing - Basic laboratory techniques - Bioassay - Biochemical oxygen demand - Chemical oxygen demand

- Chlorine residual - Dentrification - Dissolved oxygen - Dissolved solids - Metal analysis - Microbiological - Nitrogen (Ammonia, Nitrate, Nitrite,

Total Kjeldahl) - Oxygen uptake rate - pH - Phosphorus - Phosphorus removal - Settleability testing - Solids - Temperature - Volatile acids

Monitor, Evaluate, and Adjust Treatment Processes & System

13 items

Activated sludge Add dry chemicals Add gaseous chemicals Add liquid chemicals Chemical/physical advanced waste

treatment following secondary treatment

Chlorination Clarifiers Comminution Dechlorination Effluent discharge and reuse Flow equalization Grit removal Ion exchange for advanced waste

treatment Media filtration

Nitrification Odor control Reverse osmosis, electrodialysis, and other

membrane filtration Screening Solid dewatering (filtration, centrifugation,

drying beds) Solids conditioning (chemical, thermal,

elutriation) Stabilization (disgestion, thermal, chemical) Thickening (gravity, flotation,

centrifugation, filtration) Ultraviolet irradiation Volume reduction (drying, incineration,

composting)


Operating and Maintaining Equipment

9 items

Blowers and compressors Check and evaluate capacity of

equipment Chemical feeders Computers Drives Electronic testing equipment Engines Fittings and piping Generators Heat exchangers Hydraulic equipment Inspect equipment for abnormal

conditions

Instrumentation Lifting equipment Measure and evaluate head loss Motors Odor control equipment Pneumatic Equipment Power tools Pumps Read and evaluate chart and meter results,

gauges Startup/shutdown procedures Tanks and infrastructure Traps and drains Valves

Security & Safety Procedures

9 items

Arc flash Bloodborne pathogens Chemical handling Confined space entry Electrical hazards Fire safety Lock-out/tag-out Material Safety Data Sheets (MSDS)

Natural and manmade disasters Personal protective equipment Respiratory protection Spill response Terrorism Toxic atmosphere Transportation

General Science and Mathematical Principles

12 items

Biology Chemistry

- Chemical properties Fluid Mechanics Mathematics

- Basic arithmetic - EPA approved analytical methods - Unit conversions - Usage of formulas

Measurement principles Mechanical principles Physical science Principles of electricity

Administrative Processes and Procedures

10 items

Monitoring/reporting requirements Record and evaluate data Recordkeeping

Laws and Regulations

12 items

Federal and State law and regulations State laws relating to licensure





topic areas were rated as important to successful job performance in a survey of Virginia licensed waste

waterworks operators.


9 items


Sample collection and analysis - Alkalinity - Bacteriological testing - Basic laboratory techniques - Biochemical oxygen demand


Total Kjeldahl) - Oxygen uptake rate - pH - Phosphorus - Phosphorus removal - Settleability testing - Solids - Temperature


12 items

Activated sludge Add liquid chemicals Chemical/physical advanced waste


Chlorination Clarifiers Dechlorination Effluent discharge and reuse Flow equalization Grit removal

Nitrification Odor control Screening Solid dewatering (filtration, centrifugation,

drying beds) Stabilization (disgestion, thermal, chemical) Thickening (gravity, flotation,


composting)



9 items


equipment Chemical feeders Computers Drives Electronic testing equipment Generators Inspect equipment for abnormal

conditions

Instrumentation Motors Power tools Pumps Read and evaluate chart and meter results,

gauges Startup/shutdown procedures Tanks and infrastructure Valves


9 items


Natural and manmade disasters Personal protective equipment Respiratory protection Spill response Terrorism Toxic atmosphere


12 items

Biology Chemistry





8 items


Laws and Regulations

11 items









8 items




Total Kjeldahl) - Oxygen uptake rate - pH - Phosphorus - Phosphorus removal - Settleability testing - Solids - Temperature - Volatile acids


11 items

Activated sludge Add dry chemicals Add gaseous chemicals Add liquid chemicals Chemical/physical advanced waste


Chlorination Clarifiers Comminution Dechlorination Effluent discharge and reuse Flow equalization Grit removal Media filtration


drying beds) Solids conditioning (chemical, thermal,

elutriation) Stabilization (disgestion, thermal, chemical) Thickening (gravity, flotation,


composting)



8 items


equipment Chemical feeders Computers Drives Electronic testing equipment Engines Fittings and piping Generators Hydraulic equipment Inspect equipment for abnormal

conditions

Instrumentation Lifting equipment Motors Odor control equipment Pneumatic Equipment Power tools Pumps Read and evaluate chart and meter results,



8 items


Personal protective equipment Respiratory protection Spill response Toxic atmosphere


11 items

Biology Chemistry





6 items


Laws and Regulations 8 items









10 items

Evaluate incoming wastestream/sidestream characteristics

- Biological/chemical - Color - Flow pattern - Odor - Solids concentration


- Chlorine residual - Denitrification - Dissolved oxygen - Dissolved solids - Microbiological - Nitrogen (Ammonia, Nitrate, Nitrite,

Total Kjeldahl) - pH - Phosphorus - Phosphorus removal - Settleability testing - Solids - Temperature - Volatile acids


12 items

Activated sludge Add liquid chemicals Chemical/physical advanced waste


Chlorination Clarifiers Comminution Dechlorination Grit removal


drying beds) Thickening (gravity, flotation,

centrifugation, filtration) Ultraviolet irradiation


8 items


equipment Chemical feeders Computers Drives Electronic testing equipment Fittings and piping Generators Hydraulic equipment Inspect equipment for abnormal

conditions

Instrumentation Lifting equipment Motors Pumps Read and evaluate chart and meter results,




5 items


Natural and manmade disasters Personal protective equipment Respiratory protection Spill response Toxic atmosphere


13 items

Biology Chemistry


- Basic arithmetic - Unit conversions - Usage of formulas



3 items

Record and evaluate data Recordkeeping

Laws and Regulations 9 items



P R A C T I C E Q U E S T I O N S

Questions on the exam are followed by four answer choices with only one correct answer. Review the sample

questions and answers below.

1. Failure of the collector flight system in a rectangular primary setting tank will result in

a. an increase in the percentage of solids in the sludge pumped from the tank. b. an immediate decrease in the primary effluent suspended solids. c. a decrease in the percentage of solids in the sludge pumped from the tank. d. a gradual decrease in the primary effluent suspended solids.

2. What minimum oxygen concentration is considered safe when entering a confined space?

a. 18% b. 18.5% c. 19% d. 19.5%

3. What is the maximum allowable time between collection and testing of effluent bacteriological

samples?

a. 15 minutes b. 6 hours c. 24 hours d. 48 hours

4. When nitrification takes place in an activated sludge or other suspended growth treatment system, a

proportional reduction can be expected in

a. methanol. b. temperature. c. alkalinity. d. MLSS.

5. The term suction lift refers to the pressure measured from the center line of the pump

a. up to the static discharge head. b. down to the static discharge head. c. down to the water surface. d. up to the water surface.

Answers: 1. c. 2. d. 3. b. 4. c. 5. c.

Documents

V irginia Wastewater Works Operator INSERT COVER · NTN before you can schedule your exam. Photo approval may take up to 10 business days. Mail Option The passport compliant photo