Cwea stuvia - Study guides, Class notes & Summaries

40 CFR 121- 124 - Answer The federal storm water regulations for the permitting of municipalities and industries. Regulations define storm water terms, permitting, inspecting, and sampling measurements 40 CFR 136 - Answer The regulations for sampling preservation and analyses of water, wastewater, and solid waste 40 CFR 403 - Answer The federal regulations defining the elements of a pretreatment program, prohibited discharges, and the approval process for establishing a pretreatment progra...

What does COLOR measure? - Answer Amount of color units (CU) in a sample. Color caused by natural metallic ions (Fe & Mg) & industrial wastes. What is the test summary for COLOR? - Answer Sample -> Tubes -> Compare to color standards over light source Which of the following techniques is used to isolate anionic surfactants (as MBAS) from the sample matrix? - Answer Extraction In the cyanide determination, which one of the following is not an interference? - Answer Halogenated arom...

Why are gasoline and volatile solvents objectionable when present in a sewer? - ANSWER-They produce an explosion hazard You should never attempt to install, troubleshoot, maintain, repair, or replace electrical equipment unless: - ANSWER-You know what you are doing, are qualified, and are authorized. How many different areas of traffic zones are there when working in roadways? - ANSWER-Five Why should hydrogen sulfide be controlled? - ANSWER-To protect sewers and structures from corrosi...

Which process is most commonly used for small pipe maintenance welding? - Answer D. Oxyacetylene gas welding What is the proper definition of an engine? - Answer B. It is machine designed to convert energy into useful mechanical motion What is wet stacking and how can it be prevented? - Answer C.Wet stacking is a condition in diesel engines in which unburned fuel passes on into the exhaust system.[1] The word "stacking" comes from the term "stack" for exhaust pipe or chimney stack. The...

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If the potential difference across the coil is low, the coil will: A-draw too much current B-become too hot C-Produce too much magnetic force D-not heat up - ANSWER-D-not heat up The NEC identifies environments that contain flammable vapors and gases as which class of hazardous location? A-Class I B-Class II C-Class III D-Class IV - ANSWER-A-Class I Which of the following reduces high voltages and currents to save values for measurements? A-auto transformer B-megohmmeter C-ins...

Legally responsible officals are required to report catagory 1 sanitary sewer overflows: - Answer Within two hours When testing a manhole for explosive gases when should the first test be made? - Answer Before removing the manhole cover When setting up to ventilate a manhole,the air inlet should be how many feet above street level? - Answer 2.0 feet Which chemical may be used for odor control in a sewer system? - Answer Hydrogen peroxide A category 2 is: - Answer Any sso which is not...

Which welding process is most commonly used for SMALL pipe maintenance welding? - Answer OxyAcetylene gas welding What is the proper definition of an engine? - Answer It is a machine designed to convert energy into useful mechanical motion What is wet stacking and how can it be prevented? - Answer It is unburned fuel collecting in the exhaust due to light or no load conditions To check flywheel face runout, where should the dial indicator be positioned? - Answer The base on the bell hou...

CWEA Collection Systems Maintenance (Practice Questions for CWEA Grade 1 and 2 Tests) with Complete Solutions CWEA Collection Systems Maintenance (Practice Questions for CWEA Grade 1 and 2 Tests) with Complete Solutions CWEA Collection Systems Maintenance (Practice Questions for CWEA Grade 1 and 2 Tests) with Complete Solutions Why are gasoline and volatile solvents objectionable when present in a sewer? - ANSWER-They produce an explosion hazard You should never attempt to install, maintain...

CWEA Grade 4 Test Questions and Answers (Graded A)CWEA Grade 4 Test Questions and Answers (Graded A)CWEA Grade 4 Test Questions and Answers (Graded A)CWEA Grade 4 Test Questions and Answers (Graded A)AA - ANSWER-atomic absorption AC - ANSWER-power alternating current ac - ANSWER-acre AF - ANSWER-acre-foot (feet) AFY - ANSWER-acre-foot per year AMSA - ANSWER-Association of Metropolitan Sewerage Agencies ANSI - ANSWER-American National Standards Institute APHA - ANSWER-Americ...