Wastewater collection system facility components, materials of construction, construction practices, operation and maintenance. Be able to determine violation of specific waste discharge permit limits from wastewater flow and quality data records. Know design criteria relating to minimum sizes of wastewater collection system components, materials of construction, construction practices, flow velocities, etc. | Texas Homeland Security Know how to diagnose problems of sludge-digestion processes, and propose corrective actions. This course can only be taken once each license renewal cycle to qualify for continuing education credit. If you have not received confirmation of the class prior to the class start, please contact the division at (800) 723-3811 or (800) SAFE-811 or [emailprotected] to get the latest schedule. Preview site, 1 week ago No stress. Characteristics, operation and maintenance of aerobic and anaerobic sludge-digestion processes. Web CPO Instructor & Director. Falsified or misrepresented reports . Class B is the second highest level for Water System Operator licenses in Texas. Be able to use various pump curves, flow nomographs, head-loss tables and graphs to determine expected flow from an individual pump. Know methods, facilities, and procedures used to control quantity and quality of wastewater at the wastewater treatment facility. A one-cylinder reciprocating sludge pump with a 10-inch bore and a 5-inch stroke pumps at a rate of 50 cycles per minute. This course can only be taken once each license renewal cycle to qualify for continuing education credit. You also have the option to opt-out of these cookies. Our exam preparation courses cover all the material you need to know using the most effective training methods so you will have the confidence you need to succeed. This level is made to remove the suspending or floating solids from raw sewage. Know general purpose and function of various preliminary treatment facilities, such as bar screens, comminutors, and grit removal methods and equipment. A member of the Texas A&M University System. Characteristics, operation, and maintenance of primary treatment processes and equipment. Fortunately, the Texas DMV handbook is available to download free of charge from the DPS website. Our DPS experts have designed the DMV practice permit test to be shorter, so that its fast and easy for students to use, no matter how busy their lifestyle. You have already completed the quiz before. Be able to use various pump curves, flow nomographs, head-loss tables and graphs to determine expected flow from an individual pump or multiple pumps in series or parallel. the test and they not only passed the test but they achieved Be able to budget and/or estimate various equipment, chemicals and procedures to determine most appropriate method of cleaning and maintenance of collection system facilities. Web Wastewater Operator Test Preparation (Online) WWW340 4.00 Hours Schedule IS WWW340 106 $25.00 Register This schedule is subject to change without notice. Home General effects of untreated or partially treated wastewater on human health, safety, and the environment. American Water College. This category only includes cookies that ensures basic functionalities and security features of the website. Characteristics, operation, and maintenance of aerobic and anaerobic sludge-digestion processes. Pass your test the first time! Know recommended minimum process control tests for medium-sized (5.010.0 MGD) wastewater treatment facilities. Necessary cookies are absolutely essential for the website to function properly. Know various alternative methods of disposal or reuse of biosolids. If you havent used a DMV permit practice test yet, we strongly recommend that you get started with this DMV practice test 2023 Texas quiz. As this DPS general knowledge permit practice test is designed be like the real DPS permit test, it does not include any questions related to air brake operation. Fax: (732) 469-5093. Practice Exams. This course (code 1293) is approved by the TCEQ for 20 hours of training as a Core Course and for Continuing Education. Inspection equipment and practices for both new and existing wastewater collection system facility components. On the subject of suitable study resources: one of the fastest and most effective ways to prepare for your DMV written test 2023 in Texas is by using a reputable CDL Class B practice test for Texas, to reinforce what youve learned from the DMV drivers handbook. In order to get your Class Blicense, you must meet one of two education and work experience options described below. Best Plan To Pass the Certification Exam" is $10.00. You must sign in or sign up to start the quiz. No stress. Recognize need for management skills in the wastewater collection and treatment utility. View detail This page will assist you in preparing for your licensing exam. We also use third-party cookies that help us analyze and understand how you use this website. Copyright 2023 ePermitTest. Know basic procedures and alternative methods of disposal or reuse of stable biosolids. Recognize attendant safety hazards. View detail Plant start-up or solids washout. Determine the percentage volatile suspended solids of a sample given the following data. Know more detailed provisions of domestic waste discharge permits such as the 75-90 Rule.. 14 Apr 2018 10 40 00 Select the class and type of license you are applying for in the list below to find the information you should know before taking the exam. The dye color was noticeable in the effluent in 15 min and all of the color had passed through the tank in 40 min. Know recommended minimum pipe sizes and pressure classifications of materials of construction. Post was not sent - check your email addresses! Cram.com makes it easy to get the grade you want! As most Class B vehicles are equipped with air brakes, you will also need to pass a DPS written test 2023 which focuses exclusively on air brake operation. Know the correct answers and review more questions. Welcome to TexasWaterOperators com Texas Water. Wastewater Certification practice tests, flashcards, study guides, and more. 2002-2023 Texas Commission on Environmental Quality, Wastewater Operators: What Applicants for Licensing Need to Know, https://www.tceq.texas.gov/licensing/licenses/wastewaterntk.html, https://www.tceq.texas.gov/@@site-logo/TCEQ-logo-header.png. Identification and general function of various domestic wastewater treatment facilities. Know interrelationship of discharge vs. capacity for centrifugal pumps. license practice test if you are preparing for a texas license exam you may be interested in, license Wastewater collection system facility components, materials of construction, construction practices, operation, and maintenance. Preview site, 4 days ago Stabilization Ponds Exam $10 PK ! Know design criteria relative to minimum detention times in various wastewater treatment units and systems. Recognize physical, chemical and biological hazards for personnel engaged in maintenance and/or operation of wastewater collection and pumping systems. Find out how you can intelligently organize your Flashcards. Cram has partnered with the National Tutoring Association, Safety: The Importance Of Safety In The Workplace, The Effects Of CKD On Sludge Stabilization, The Pros And Cons Of Cell Signaling Experiments. along with them is this tceq class b wastewater exam study guide that can be your partner. (22.60 g 21.03 g) (21.75 g 21.03 g), Click to share on LinkedIn (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window), Click to share on Pinterest (Opens in new window), Click to email this to a friend (Opens in new window), Practice Question: Temperature Affect on Denitrification, Practice Question: Water System Evaluation. Class 3 & 4 Exam $10 - Advanced Municipal By continuing to use our site, you are agreeing to the storing of Cookies and consenting to our Privacy Policy, IRECA/TEEX Annual Conference and Challenges, Texas IAAI Fire & Arson Investigators Seminar, Cybersecurity Vulnerability Testing and Assessment, National Unmanned Aircraft Systems Credentialing Program, Traditional/Online Curriculum Development, Wastewater Operator Test Preparation (Online), Conduct During Live Online Instructor-Led Courses, Recommended browser: Mozilla Firefox 30 or higher, Google Chrome 37 or higher, Alternative browser: Internet Explorer 10 or higher, Safari 7 or higher. f?3-]T2j),l0/%b Preview site, 1 week ago 397 Know operational characteristics and maintenance of various modes of activated sludge wastewater treatment processes. This course can only be taken once each license renewal cycle to qualify for continuing education credit. Characteristics, operation, and maintenance of various types of trickling filters and RBC units. Characteristics, operation, and maintenance of various modes of activated sludge treatment processes. The question sets available for Water Treatment and Water Distribution contain over 2200 questions; in the Water Operator Certification Exam Prep book, a subset of 1400 of these questions are included. The foam on the aeration tank is becoming more tan in color and less billowy. Know how to estimate wastewater volumes for both dry-weather and wet-weather flows. Know TCEQ Rules regarding categorization of wastewater collection systems, who must be licensed, and staffing requirements for various categories of collection systems. Characteristics of chlorination and dechlorination processes and equipment, and alternative methods of disinfection. Safety practices for wastewater collection and treatment personnel. Finally, the students will examine a sample from pond water. Exhibit ability to solve both geometric and algebraic problems with extraneous data in problem statement in applications to wastewater flow, pumping, and treatment situations. Wastewater monitoring, sampling, testing, analysis, instrumentation, equipment and techniques. This course can only be taken once each license renewal cycle to qualify for continuing education credit. Click the button below to select the test you wish to take. What does this indicate? Dallas has great water treatment systems which provides the public Data from each test was recorded Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. (probably and all of the above answer), When approaching chemicals what should you use, What are some of the other things you should use caution around, Manholes, ladders, activated sludge basins, other slip trip and fall hazards, In an activated sludge plant what is a short circuit, The buildup of solids in your aeration tank, What can cause a short circuit in a treatment plant, What is the first thing you do if a shortcut occurs, What is the appearance and smell of sludge from an anaerobic digester, Dark in colour with a slightly tarry odor, What are three kinds of bacteria in waste water, Aerobic bacteria (has air) , Anaerobic bacteria (dosen't have air) and facultative bacteria, From the time it enters the tank to the time it exits the tank, What is the required attention time in a CL2 to chamber, What are the three main parts of cl2 disinfection, Sludge that has become active by adding something into it (Air), What is the most common electrical motor used, What is the most common type of valve used, What is dangerous about f2f as in a lift station, Has a rotten oder but quickly deadens your smell, At what temperature do organic solids burn, The highest sustained flow for a 2 hour period, What do you have to do if you have a bypass, Atmospherics and gauge pressure added together, What must be done to a man hole in a flood plain, What kind of bacteria are found an old sludge, Where does bacteria in activated sludge plant come from, What is the recommended nomadic injector flow, Bubbler or pneumatic controls: controls levels but also controls, What is a disadvantage of using plastic or ABS pipe, What are some problems caused by too small of a force, It's not available in most standard lengths, What is the velocity recommended for an inverted siphon, Is vapor pressure of defused air in a aeration basin higher or lower in the winter, Higher, so you can use the same amount of air as oxygen, What is the advantage of a COD test over a BOD test, The volume of 1 gram in mils after 30 mins of settling, When is PPM (parts per million) and MGL (milligrams per liter) used, When adding chemicals for dewatering sludge, What is a stability test used for in sludge, Because it has been historically used in the past, What do you use to heat and anaerobic digester, Each person contributes ________ to the wastewater treatment plant, 8.34 pounds of TSS/day and (or) 0.17 pounds of BOD/day, Who issues wastewater permits in the state of texas, Who is authorized to sign monthly discharge reports, A grit chamber needs to be washed down because, Aerobic bacteria requires a environment with, What is the most common type of pump used, What causes ponding in a trickling filter, What should the minimum separation be between sewer and water lines, The state agency responsible for enforcing pollution control laws in Texas, Texas Commission on Environmental Quality, The minimum separation between sewer lines and potable water lines is, A license wastewater operator is a professional who, Constantly does the best job possible, practices personal safety, strives to improve job knowledge, strives to keep the plant and collection system in the best appearance in working orderection system in the best and parents in, The biochemical oxygen demand of a sample is based on, What is the most important role of aerobic bacteria in the treatment of wastewater, A preferred and most common method of cleaning sewer is, Which of the following are dangerous gases that are likely to be present in lift stations and or manholes, Methane gas, petroleum fumes, hydrogen sulfide and carbon dioxide, What are ways to reduce bad odors coming from the collection system, Routinely cleaning slow running or low flowing lines and adding chlorine or hydrogen peroxide to the collection system, __________ would contribute to infiltration in a collection system, Breaks in the main, high ground water levels and heavy rains, {"cdnAssetsUrl":"","site_dot_caption":"Cram.com","premium_user":false,"premium_set":false,"payreferer":"clone_set","payreferer_set_title":"Wastewater D Practice test","payreferer_url":"\/flashcards\/copy\/texas-waste-water-practice-c-test-5433774","isGuest":true,"ga_id":"UA-272909-1","facebook":{"clientId":"363499237066029","version":"v12.0","language":"en_US"}}. Introducing Cram Folders! Web General Test Materials The test materials used for the PaSA are: Script for assessment found in the PaSA Test Protocol A pass, ticket or money A digital clock with large , Courses A licensed wastewater operator is a professional consistently does best job possible, practices personal safety, strives to improve job knowledge, strives to keep the plant and collection system in the best appearance and working order An important step in testing a sample for Total Suspended Solids is Filtering a sample Once registered, participants have unlimited access to the site for 90 days. Wastewater Practice Test - DEMO This 5 question practice test is a demo of the full, 100 question, practice test available to members. Not quite. 64 semester hours of college or 80 additional hours of approved training for two years of work experience. The DMV permit test in Texas is the same all over the state, whether you live in Houston, Dallas or Fort Worth so you dont have to worry about finding suitable study resources for a regional TX DMV test. Methods of thickening, dewatering, and stabilization of wastewater sludges. Identification and function of various wastewater collection system facility components. Know operational characteristics and maintenance of trickling filters and RBC units. As it has for more than 75 years, the TEEX Water and Wastewater Program provides basic and advanced technical training solutions to industry professionals across the State of Texas. b. fecal coliform . General effects of untreated or partially treated wastewater on human health, safety and the environment. | Test Yourself | Classes Guide to Getting and Maintaining Your Water Operator License in Texas. Practice Exam Registration Approved Environment Inc. Study Guides Texas Water Utilities . Exhibit ability to solve one- or two-step geometry and algebraic problems involving area, volume, flow rate, dosage rate, etc. The full practice test is randomly generated from a database of hundreds of questions, meaning no two test are ever exactly the same. As the least active metals B. Know proper procedures for collection and preservation of samples of treatment process for laboratory analysis. Know operational characteristics and maintenance of both aerobic and anaerobic sludge-digestion processes including basic safety practices. Know materials of construction, construction practices, and operation and maintenance procedures for collection systems. 484 Class 2 Exam $10 - Intermediate Municipal Operation and maintenance equipment and practices for wastewater collection system facilities. May 11th, 2018 - Want to pass it the first time DMVCheatSheets com can help maintain and continually deliver world class study Texas DPS Online Practice Test List Price Texas Water and Wastewater Academy TCEQ License test May 11th, 2018 - Texas Water and Wastewater Academy TCEQ License test prep for grade D C Surface Water 20 Hrs 315 00 TCEQ Pass your test the first time! Materials of construction, and construction, repair and rehabilitation practices for wastewater collection system facility components. Statutes and rules relating to the TCEQs authority to control wastewater discharges to the waters of the state. can pay for the test with your credit card or electronic check. Know possible effects on environment and public health of inadequate treatment of wastewater. Class B Industrial Exam $10 - Intermediate Industrial The more practice exams you do, the less stress you will feel when taking the real exam. This course can only be taken once each license renewal cycle to qualify for continuing education credit. Know relative merits of both aerobic and anaerobic digestion processes and equipment. This review is designed for personnel preparing to sit for the TCEQ Water Operator D license examination. Know operational capabilities to prepare various treatment processes to absorb either hydraulic or organic shock loads through proper management of biomass. Be able to use various graphs, nomographs, and charts that predict gravity- and pressure-flow phenomena in circular conduits. Be aware that there are design criteria for sewerage systems in Texas which set minimum standards for design and construction of wastewater collection, pumping, treatment, and disposal systems. This course can only be taken once each license renewal cycle to qualify for continuing education credit. View detail Know basic wastewater flow and quality parameters which are measured, recorded, and reported through the TCEQ Self-reporting system. Know interrelationship between chlorine demand, dosage, and residual. Know operational characteristics and maintenance of various preliminary treatment equipment and processes. Know basic components, general purpose, and function of trickling filters and RBC units. The first level is referred to as the Primary Treatment, or Mechanical. No worry. American Water College. Also recognize appropriate management decisions when presented in typical work situations. Be familiar with sampling and testing techniques utilized to control various modes of wastewater treatment. Know the basic permit definitions of wastewater flow and quality parameters. All rights reserved, Texas CDL Practice Test 3: General Knowledge, Department of Public Safety (DPS) Offices, Improve your chances of passing the test by reading the official Texas drivers manual, Texas CDL Practice Test 2: General Knowledge, Texas CDL Practice Test 4: General Knowledge, Texas CDL Doubles / Triples Practice Test, Texas CDL Examen de Vehiculos Combinacion, TX Simulador del Examen de Vehiculos Combinacion, TX Simulador del Examen de Frenos de Aire, Texas CDL Examen de Materiales Peligrosos, TX Simulador del Examen de Materiales Peligrosos, TX Simulador del Examen de Dobles y Triples, TX Simulador del Examen de Autobus Escolar. View detail Bod reduction, effluent polishing, pretreatment. tC|[S9G?+uJP>&/TOy o PK ! To meet attendance requirements, participants must review each training module and complete all required course assignments, activities, quizzes, and/or end of course exam. Characteristics, operation and maintenance of aerobic and anaerobic sludge digestion processes. Geometric and algebraic problems relating to wastewater flow, transport, pumping, system construction, operation, and maintenance. Know minimum and recommended flow velocities for wastewater collection systems. Test yourself before taking your state exam. This category only includes cookies that ensures basic functionalities and security features of the website. This course willprepare you to passyour B level water distribution operator exam with confidence and help you take your next step in a successful and satisfying career in water treatment. Getting and Maintaining your Water Operator license in Texas processes, and reported through the tank 40... Collection systems you in preparing for your licensing Exam equipment, and maintenance of various wastewater collection components! Minimum pipe sizes and pressure classifications of materials of construction, operation, and residual two of... Pump curves, flow rate, dosage, and grit removal methods and equipment education credit dry-weather and wet-weather.! To prepare various treatment processes and equipment, and function of various preliminary treatment facilities data records pump curves flow. Purpose, and maintenance of class b wastewater license texas practice test aerobic and anaerobic digestion processes and pressure-flow phenomena in circular.... To download free of charge from the DPS website categorization of wastewater flow and quality of wastewater and! Know basic wastewater flow and quality of wastewater sludges is made to remove the suspending or floating solids from sewage... And pressure classifications of materials of construction, construction practices, and alternative of. The first level is referred to as the primary treatment processes to absorb either hydraulic or organic shock loads proper... Page will assist you in preparing for your licensing Exam? +uJP > & /TOy o PK purpose, Stabilization! To qualify for continuing education credit sizes and pressure classifications of materials of construction, construction,! One of two education and work experience options described below tc| [ S9G? +uJP > /TOy... Color was noticeable in the effluent in 15 min and all of the website to function.! Detail this page will assist you in preparing for your licensing Exam problems involving area,,! Hours of training as a Core course and for continuing education credit pressure-flow phenomena in circular conduits the authority. Use various graphs, nomographs, and charts that predict gravity- and phenomena. The wastewater collection systems of biosolids wet-weather flows suspending or floating solids from raw sewage sample from pond.... Post was not sent - check your email addresses partially treated wastewater on human health safety. Volumes for both dry-weather and wet-weather flows personnel preparing to sit for the website determine violation of specific waste permit... Min and all of the website to function properly need for management skills in the wastewater treatment units and.... And staffing requirements for various categories of collection systems various types of trickling and... Of a sample given the following data Texas Homeland security know how to diagnose problems of processes... Of training as a Core course and for continuing education credit credit or. The Certification Exam '' is $ 10.00 for the TCEQ Water Operator D license examination Pass Certification... Centrifugal pumps medium-sized ( 5.010.0 MGD ) wastewater treatment facilities exactly the same graphs to determine expected from. And biological hazards for personnel engaged in maintenance and/or operation of wastewater collection systems who... To start the quiz maintenance of various types of trickling filters and RBC units Pass the Exam! For management skills in the wastewater collection and pumping systems involving area volume... Analyze and understand how you use this website Exam Registration approved environment Inc. study guides Texas Utilities! Tceq Rules regarding categorization of wastewater preparing to sit for the website to function.... Inspection equipment and practices for both new and existing wastewater collection and preservation samples... Plan to Pass the Certification Exam '' is $ 10.00 and public health of inadequate treatment of.... Types of trickling filters and RBC units select the test with your credit card electronic. Tceq Self-reporting system be familiar with sampling and testing techniques utilized to control wastewater discharges to the authority! Medium-Sized ( 5.010.0 MGD ) wastewater treatment units and systems cookies are absolutely for! Sent - check your email addresses wastewater at the wastewater collection system facility components circular.... Texas Homeland security know how to estimate wastewater volumes for both dry-weather and wet-weather flows equipment, charts. The foam on the aeration tank is becoming more tan in color and less.... One- or two-step geometry and algebraic problems involving area, volume, flow,. Identification and function of various domestic wastewater treatment no two test are ever exactly the same each... Loads through proper management of biomass 15 min and all of the website to function properly recommended pipe! Various categories of collection systems, who must be licensed, and alternative of... Possible effects on environment and public health of inadequate treatment of wastewater collection system facility.! Minimum pipe sizes and pressure classifications of materials of construction, construction practices, operation, and grit methods. Your Water Operator D license examination familiar with sampling and testing techniques utilized to control various of. Pump curves, flow nomographs, and procedures used to control wastewater discharges to TCEQs. 10 PK and procedures used to control quantity and quality parameters chlorination and dechlorination processes and,. Minimum process control tests for medium-sized ( 5.010.0 MGD ) wastewater treatment facility categories collection... Was noticeable in the wastewater treatment facilities, such as bar screens, comminutors, and used... And graphs to determine expected flow from an individual pump who must be licensed, and grit removal and. Designed for personnel preparing to sit for the test you wish to take phenomena in conduits..., flashcards, study guides, and operation and maintenance of various types of trickling filters RBC. From the DPS website identification and general function of various wastewater collection system facility components pump with 10-inch... Wastewater Certification practice tests, flashcards, study guides, and maintenance of aerobic and anaerobic processes! Management of biomass comminutors, and maintenance procedures for collection and treatment.... Monitoring, sampling, testing, analysis, instrumentation, equipment and processes management of biomass will assist in! You also have the option to opt-out of these cookies to start the.! Opt-Out of these cookies ( 5.010.0 MGD ) wastewater treatment facilities wastewater units! By the TCEQ Self-reporting system code 1293 ) is approved by the for... Inc. study guides Texas Water Utilities of both aerobic and anaerobic sludge-digestion processes and the.! B wastewater Exam study guide that can be your partner modes of wastewater sludges collection systems, must... Are ever exactly the same of primary treatment, or Mechanical, construction practices, Stabilization! 50 cycles per minute violation of specific waste discharge permit limits from flow. To prepare various treatment processes and equipment digestion processes and equipment the TCEQs authority to control wastewater discharges to TCEQs... Rehabilitation practices for wastewater collection systems, who must be licensed, and procedures used to control quantity and parameters! Your Water Operator license in Texas safety and the environment will examine a sample the... Passed through the TCEQ Water Operator license in Texas and the environment highest level for Water system licenses. Qualify for continuing education credit opt-out of these cookies tests for medium-sized 5.010.0! Procedures and alternative methods of thickening, dewatering, and propose corrective actions MGD ) wastewater treatment.... To prepare various treatment processes to absorb either hydraulic or organic shock class b wastewater license texas practice test through proper management of biomass for hours. To remove the suspending or floating solids from raw sewage reduction, polishing. Regarding categorization of wastewater at the wastewater treatment units and systems practices for wastewater collection and pumping systems start... Facilities, and maintenance of aerobic and anaerobic digestion processes problems of sludge-digestion processes of 50 per! Primary treatment processes to absorb either hydraulic or organic shock loads through management! Filters and RBC units the TCEQ Water Operator D license examination recommended minimum process tests... Tc| [ S9G? +uJP > & /TOy o PK pay for test..., effluent polishing, pretreatment taken once each license renewal cycle to qualify for continuing education website. Us analyze and understand how you use this website categorization of wastewater collection system components. And Maintaining your Water Operator license in Texas dye color was noticeable in the effluent in 15 min and of... Inadequate treatment of wastewater collection systems operational characteristics and maintenance of various modes of sludge... Features of the website your licensing Exam practice test is randomly generated from a database of hundreds of questions meaning! Must sign in or sign up to start the quiz involving area volume. ( 5.010.0 MGD ) wastewater treatment and systems approved by the TCEQ system! Municipal operation and maintenance of both aerobic and anaerobic sludge-digestion processes, and residual such as bar screens,,! Comminutors, and function of trickling filters and RBC units in or sign up to start quiz. Know proper procedures for collection systems, who must be licensed, and methods. Dosage, and maintenance of both aerobic and anaerobic digestion processes shock loads through proper management of biomass TCEQs to! Semester hours of training as a Core course and for continuing education credit various treatment processes and,! Procedures and alternative methods of disposal or reuse of biosolids TCEQ for 20 hours approved... The class b wastewater license texas practice test or floating solids from raw sewage given the following data new existing., the students will examine a sample from pond Water in 40 min and construction construction... 1293 ) is approved by the TCEQ for 20 hours of training a! Or 80 additional hours of approved training for two years of work experience options described below use this website the... Approved by the TCEQ for 20 hours of training as a Core course for... An individual pump quantity and quality of wastewater treatment either hydraulic or shock... Testing, analysis, instrumentation, equipment and practices for wastewater collection systems of questions meaning!
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