Stormwater Management CSUS 354 Final
Exam (2/7) UPDATED ACTUAL
Questions and CORRECT Answers
Why do we need a storm water management system? - CORRECT ANSWER -Natural
system = Low Stream Runoff •Slow Absorption• Groundwater recharge• Natural Filtering by
Vegetation
Urbanized area = More and Faster Runoff• Decreased Recharge/Infiltration• Pollutant Runoff•
Erosion/Flooding
Hydrograph pre/post development (difference): - CORRECT ANSWER -Image B1,
developed condition = much higher peak and sooner, more volume
Which act called for the regulation of stormwater? - CORRECT ANSWER -The Clean
Water Act
What are the two phases of the clean water act storm water amendments? - CORRECT
ANSWER -Phase I Storm Water Rules (large municipalities) Phase II Storm Water Rules
(small and medium municipalities)
BASED ON POPULATION and DENSITY
What is MS4? and what is it used for? - CORRECT ANSWER -Municipal Storm Storm
Sewer System. A conveyance belonging to a public entity that discharges to Water and is: -
Designated or used for collecting or conveying storm water- Not a Combined Sewer
Where do storm sewers lead to? - CORRECT ANSWER -Streams * Directly into surface
waters (when separated from sanitary sewers)
Where do sanitary sewers lead to? - CORRECT ANSWER -Waste water treatment plants
Exam (2/7) UPDATED ACTUAL
Questions and CORRECT Answers
Why do we need a storm water management system? - CORRECT ANSWER -Natural
system = Low Stream Runoff •Slow Absorption• Groundwater recharge• Natural Filtering by
Vegetation
Urbanized area = More and Faster Runoff• Decreased Recharge/Infiltration• Pollutant Runoff•
Erosion/Flooding
Hydrograph pre/post development (difference): - CORRECT ANSWER -Image B1,
developed condition = much higher peak and sooner, more volume
Which act called for the regulation of stormwater? - CORRECT ANSWER -The Clean
Water Act
What are the two phases of the clean water act storm water amendments? - CORRECT
ANSWER -Phase I Storm Water Rules (large municipalities) Phase II Storm Water Rules
(small and medium municipalities)
BASED ON POPULATION and DENSITY
What is MS4? and what is it used for? - CORRECT ANSWER -Municipal Storm Storm
Sewer System. A conveyance belonging to a public entity that discharges to Water and is: -
Designated or used for collecting or conveying storm water- Not a Combined Sewer
Where do storm sewers lead to? - CORRECT ANSWER -Streams * Directly into surface
waters (when separated from sanitary sewers)
Where do sanitary sewers lead to? - CORRECT ANSWER -Waste water treatment plants
