Wastewater collections Operation Exam Quizzes &
100% Correct Answers
What does CMOM stand for?
Capacity, Management, Operation, and Maintenance
What are the 3 permit conditions established by the SSO rule?
CMOM program
Prohibition of SSOs
Reporting, record-keeping, and public notification
What are the components of a CMOM program?
Proper operation of collection systems
Adequate capacity to convey base and peak flow
All feasible steps taken to lessen impact of SSOs
Notification to parties at risk of exposure during an SSO event
Written summary of CMOM available to public
Design consideration of a wastewater collection system
Provide a water velocity of greater than 2 ft/sec
What is the purpose of a wastewater collection system?
To collect and convey wastewater from a community's homes and industries
Minimum water velocity design consideration of a collections system
2 ft/sec
, Ideal conveyance of a wastewater collection system
Estimated peak flow from its service area when the area has reached max
population/development
Typical per capita waste flows from residential sources
70-100 gpd/person
Infiltration
Seepage of groundwater into the sewer system
Caused by defective pipes, joints, and connections
Leaky sewer
Inflow
Water discharged into a sewer system from roof leaders, cellars, years drains, foundation drains,
cooling water discharges
Direct discharge
Peaking factor
Ratio of a max flow to average flow
Components of a gravity-fed collections system
Building Sewers
Lateral and branch sewers
Main sewers
Trunk Sewers
100% Correct Answers
What does CMOM stand for?
Capacity, Management, Operation, and Maintenance
What are the 3 permit conditions established by the SSO rule?
CMOM program
Prohibition of SSOs
Reporting, record-keeping, and public notification
What are the components of a CMOM program?
Proper operation of collection systems
Adequate capacity to convey base and peak flow
All feasible steps taken to lessen impact of SSOs
Notification to parties at risk of exposure during an SSO event
Written summary of CMOM available to public
Design consideration of a wastewater collection system
Provide a water velocity of greater than 2 ft/sec
What is the purpose of a wastewater collection system?
To collect and convey wastewater from a community's homes and industries
Minimum water velocity design consideration of a collections system
2 ft/sec
, Ideal conveyance of a wastewater collection system
Estimated peak flow from its service area when the area has reached max
population/development
Typical per capita waste flows from residential sources
70-100 gpd/person
Infiltration
Seepage of groundwater into the sewer system
Caused by defective pipes, joints, and connections
Leaky sewer
Inflow
Water discharged into a sewer system from roof leaders, cellars, years drains, foundation drains,
cooling water discharges
Direct discharge
Peaking factor
Ratio of a max flow to average flow
Components of a gravity-fed collections system
Building Sewers
Lateral and branch sewers
Main sewers
Trunk Sewers
