CWEA Collections Grade 1 Practice Guide 2026 Test, Exams of Water and Wastewater Engineering

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CWEA Collections Grade 1 Practice Guide 2026 Test

a | CWEA Collections Grade 1 Practice Guide 2026 Test Sanitary Sewer Overflow (SO) - CORRECT ANSWER -To accurately estimate the volume of a sanitary sewer overflow, you must have Spill Start Time, Spill End Time, and Spill Rate. ystem Management Plan - CORRECT ANSWER -The goal of a sanitary sewer system is to provide a plan and schedule to properly manage, operate, and maintain all parts of the system. Sanitary Sewer Basic Elememss of a Safety Program - SORRIDGIVANSIVER! The basic clements include accident investigation, injury frequency rates, and safety policy statement. Easement Considerations - GORRECTANSWER! When obtaining an easement for construction and maintenance of a collection system, access for equipment and personnel must be considered. Immediate Response to Board or Council - GORRECTEANGWERL IF you do not know all the answers, you should respond wich the information available and update them with more. Managing Substandard Performance - GORRECTANSWER Discuss the problem with the substandard foreman and offer to help before any other action is taken. Pipe Material Selection - G@RREGHANSWER! In selecting pipe material for maximum service life, che life expectancy of the pipe is the most important factor. Flow Capacity of a Sewer Line - S@RIREGIGANSIVERI-The flow capacity ofa sewer line is affected by backfill material, manhole spacing, and pipe size. bua ee ee ee ee eee ee ee ee ee eee eee eee Ds ce eee ee ee es “1 I I I I I I I I I I I I I I I I I I I I I I I I al Grade Conflict Solution - SQRRIECINANSWUERE When a grade conflict exists between a water main and a sewer main, the best solution is co drop the sewer service under the water main and let it work like a siphon. Challenges in Wastewater Collection Replacement - GORREGINAINSIVER! The replacement of wastewater collection systems in some downtown streets is difficult due to crowding of other underground utilities. Rescue Service Pra e must tice Conditions - CORRECT ANSWER -Each member of the rescue serv! practice permit space rescues at least once a year in a simulated situation or by the satisfactory performance of an actual rescue. Camera Wedge Problem - GO RREGIANSWERE If the camera becomes wedged during a video inspection, the first step in solving the problem is to dig up the area where the camera is wedged. As Built Drawings - CORRECTANSWER)-Construction drawings issued to the contractor, corrected construction drawings showing changes made in the field installation, detailed drawings of proposed construction, and sectional maps on file. Category 1 Sanitary Sewer Overflows Reporting - G@RREGDANSWERI Legally Responsible Officials ate required to report within 30 days, before the end of the day, as soon as possible, or within 2 hrs. Span & Control - GORRECIVANSWER)-Relates to the number of subordinates who can be supervised effectively by one supervisor, which at the top level of organizations is typically 2 to 4, 3 to 5, 6 to 8, or 9 to ll. Power Rodder Tools - GORRECIANSWERI Tools used with a power rodder include finger grips, pruning shears, spring blades, and videotape camera. Sewer Rodding Tools - SGRREGISAINSWERE- Tools used for sewer rodding include lag screw, porcupine, root saw, and square bar cork screw. r I I I I I I I I I I I I I I I I I I I I I I I I L “1 I I I I I I I I I I I I I I I I I I I I I I I I al Staffing for Shift Coverage - CORRECT ANSWER -If John cannot work his shift, potential replacements include Steve, Mike, Juan, Jim, Bobby, Shawn, and June. Employees required to wear respirators - GORRECTANSWER Must be certified medically fic. First action after severe injury accident - SORRECIPANS WERE Call the supervisor. Routine confined space to permit required confined space - CORRECT ANSWER -Any work that may change the air quality. Most common injury location in wastewater industry - SORRECTANSWERL-Hands. Hydraulic cleaning methods - GORRECIANGWER Water under pressure that produces high water velocities, Different areas of traffic zones when working in roadways - GORREGIANSWERI Four. Maintenance operation in a backyard easement - SORRDCTANSIVER!-Contact the resident, and politely ask for permission to enter the backyard. Earliest you can dig after a ticket called into Dig Alert on Friday at 8am - GORRECTANSWER! Tuesday 8am, Training for entering a Permit Required Confined Space - GORRECTANSWEREncy and rescue procedures. Fourth condition necessary to create an explosion - GORRECTANSWER Proper mixing of gas and oxygen. r I I I I I I I I I I I I I I I I I I I I I I I I L “1 I I I I I I I I I I I I I I I I I I I I I I I I al Tools used with a power codder - GORRECGHAINSIWER Spring blades. Ttems to consider when selecting a solution to clear a stoppage in a sewer CORRECT ANSWER. Cause of stoppage. Flatter sewer line grades problem - GORREGIAINSWERA decrease in velocity allowing organic and inorganic solids to settle out. Inspection frequency for excavation site and adjacent areas for hazardous conditions - CORRECT ANSWER -Daily. Protective shoring systems options GORRECTENSWER Working in an un-sloped trench with no shoring. Frequency of inspection for hazardous conditions at excavation sites GORRECTANSWER! Daily. What to do first in case of severe injuries - CORRECT ANSWER -Send for help and check and/or restore breathing. Conditions for a permic required confined space - SORRECINANSIWER).A permic is always required. Cou:nion injuzy iz wastowates industry CORRECT ANSWER -Fect, Tools not used for sewer rodding - SORRECTANSWERI-Lag screw. bua ee ee ee ee eee ee ee ee ee eee eee eee Ds ce eee ee ee es “1 I I I I I I I I I I I I I I I I I I I I I I I I al Written injury and illness prevention plan - CORRECT ANSWER-A document required by the state of California for employers Respirator certification - GORRECTANSWER Employees must be certified medically fit to wear respirators, Active safety program - CORRECT ANSWER -A program that includes routine safety meetings and disciplinary actions. Permit required confined space - CORRECT ANSWER. confined space that requires a permit due to potential hazards. Cal/OSHA trench requirements - CORRICTANS WER Vertical walled trenches over 5 feet deep must be shored. Lockout requirements - GORRECTANSWER Strict procedures to ensure machinery before maintenance, safely shut down Confined spaces - CORRECT ANSWER -Spaces that require special safety measures due to potential hazards. Illegal or incorrect connections - GORRECTANGWER Results from improper installation or maintenance practices. Accident response in pump station - CORRECT ANSWER -Fits: step is to send for help and check and/or restore breathing. r I I I I I I I I I I I I I I I I I I I I I I I I L “1 I I I I I I I I I I I I I I I I I I I I I I I I al Routine confined space - CORRECT ANSWER-A space that may require a permic if air quality changes. Spoil placement in trench - GORRECTANSWER Spoil must be placed no closer than 2 feet from the edge of the trench. Supervisor approval for confined spaces - CORRECT ANSWER -All confined spaces are considered ‘permit required’ until supervisor approval. Safety atticude - GORRECIANSIVERAll employees should maintain a proper safety attitude. Infiltration detection methods - GORREGHANGIVER! Dye testing, Lamping, Low flows, Smoke testing Inflow detection methods - CORRECT ANSWER -Dye testing, Lamping, High flows, Smoke testing Underside of a manhole lid - CORRECT ANSWER -Can bea source of inflow, contribute to odor problems, fail due to corrosion, harbor dangerous insects Advantage of a CCTY system - SQ@RRIECIMANSWER-Ability to check our actual settling raves of disturbed joints, observe water flowing down sewer, record infiltration water flow in action, visually monitor removal of grease Purpose of forcing air into the sewer system during smoke testing - GORRECTANSWER Blow any smoke in the sewer out before testing starts, get an air flow established, ventilate the sewer to remove explosive gases, warn illegal connections that the system will be smoke tested Lamping technique - CORRECT ANSWER. Used to accurately pinpoint location of roots, determine if a sewer line is straight and clear of obstructions, find cracks where infiltration is entering the pipeline, test new sewers for final acceptance from the contractor r I I I I I I I I I I I I I I I I I I I I I I I I L “1 I I I I I I I I I I I I I I I I I I I I I I I I al Pre-trip inspection checks - CORRECT ANSWER ~The one thing you don't have to check is the horn Air leak - GORREGIANSWERL A breach in a system allowing air co escape. Oil leak - CORRECT ANSWER -A breach in a system allowing oil to escape. Horn - QORREGHANSWERL A device used co produce sound as warning signal. Fuel - CORRECT ANSWER-A substance used to produce energy, typically in engines. Gear box low oil - CORRECT ANSWER-A condition indicating insufficient oil in the gearbox. Tire rode has oil on it - CORRECT ANSWER-A condition indicating oil contamination on the tire rod. 10 degree play on steering wheel - CORRECT ANSWER -A measure of the looseness in the steering mechanism. Fuel level is low - CORRECT ANSWER. A condition indicating that the fuel tank has insufficient fuel. Wastewater collections systems - GORRESTANSWER Systems built co carry away wastewater from homes and industries. Manholes - CORRECT ANSWER -Access points to sewers for maintenance and inspection. r I I I I I I I I I I I I I I I I I I I I I I I I L a | Minimum size cone in a 25mph or 35mph zone - CORRECT ANSWER -The smallest cone size that can be used is 28 inches, Soil compressive strength of .05 or less - CORRECT ANSWER-Soil classified as Type C. Soil strength greater than .05 tsf but less than 1.5 tof- CORRECT ANSWER -Soil classified as Type B. PVC - GORRECIANSWER)- stands for Polyvinylchloride. CIWQS - GORRECHANSWER! Stands for California Integrated Water Quality System. Tdeal sewer lateral connection - GORRECTANSWERIA Wye connection to a sewer mainline, DigAlert ticket validicy - GORRECIANSWERI-A DigAlert ticket is valid for 31 days. Nozzle jet for steep grade cleaning - CORRECT ANSWER -An operator would use a 45-degree nozzle jet. Spoils piles placement from trench edge - GORREGHANSWER Spoils piles should be placed 2 feet from the edge. Main objective of cleaning collection systems - CORRECT ANSWER-To prevent blockages and overflows. Normal flows to reduce buildup - GORRECTANGWER Recommended flow is 2 feet per second. State Wide General Waste Discharge Requirements - CORRECT ANSWER -Affect all owners of operations of sanitary sewer systems greater than 1-mile in length. bua ee ee ee ee eee ee ee ee ee eee eee eee Ds ce eee ee ee es