SWM Federal/State Laws (Module 3) Flashcards
Describe the significance of the Federal Water Pollution Control Act of 1948.
it was one of the earliest references to clean water as a resource and it one of the earliest references to protecting water quality through managed reduction of pollutants flowing into waterways.
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Describe the significance of the Clean Water Act of 1972.
It created the Environmental Protection Agency and it established the National Pollutant Discharge Elimination System (NPDES) to control water pollution by regulating point sources that discharge pollutants.
(Module 3 / Page 3)
When was the Chesapeake Bay Preservation Act passed?
1988
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What was the goal or purpose of the Chesapeake Bay Preservation Act?
to protect “the public interest in the Chesapeake Bay, its tributaries, and other state waters”
(Module 3 / Page 5)
How did the Chesapeake Bay Preservation Act lead the way in reducing storm-water pollution?
It created the first requirements for nutrient runoff control in the post-construction phase of a development project.
(Module 3 / Page 5)
When was the Virginia Storm-water Management Act passed?
1989
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What two major changes to storm-water management in Virginia occurred as a result of the passage of the Integration Bill (or House Bill 1065)?
- It required certain counties, cities, and towns to adopt and administer a local VSMP
- Designers will now focus on reducing the post-development stormwater runoff volume from a site as well as meeting more stringent nutrient load reduction requirements.
(Module 3 / Page 6)
What determines if a locality in Virginia must adopt a VSMP?
If they have a regulated MS4 permit.
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What is a land-disturbing activity?
a manmade change to the land surface that potentially changes its runoff characteristics including clearing, grading, or excavation.
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What is the State Water Control Board “required” to do?(list 3 things)
Permit, regulate, and control stormwater runoff
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Who must adopt a VSMP for land-disturbance activities?
Counties, Cites, and towns operating regulated MS4 programs
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How should the post development runoff rate of flow and characteristics relate to the existing pre-development runoff characteristics based on the regulations?
The post-development runoff rate of flow and characteristics should replicate, as nearly as practicable, the existing pre-development runoff characteristics and site hydrology; or improve upon the pre-development site conditions if stream channel erosion or localized flooding exists.
(Module 3 / Page 11)
What (3 things) must stormwater management practices be designed to do based on the regulations?
- Detain the water quality volume and release it over 48 hours
- Detain and release over a 24-period the expected rainfall resulting from the one-year 24 hr storm.
- Reduce the allowable peak flow rate resulting from the 1.5-year, 2-year, and 10 year, 24-hr storms to a level that is less than or equal to the peak flow rate from the site assuming it was in a good forested condition by using the energy balance equation.
(Module 3 / Page 11)
Who must submit annual standards and Specifications that describe how land disturbing activities must be conducted?
- State Entities
- Linear Projects (electric, natural gas, telephone, railroad)
(Module 3 / Page 12)
What is the definition of flooding?
a volume of water that is too great to be confined within the banks or walls of the stream, water body, or conveyance system and that overflows onto adjacent lands, thereby causing or threatening damage.
(Module 3 / Page 13)