Why is sediment control and erosion prevention important? ANSWER 1. In
South Carolina, stormwater runoff is the main source of water impairment. 2.
Preserve aquatic environments and surface water downstream.
Erosion is the process by which water, wind, ice, and gravity wear away the
surface of the land.
Geologic erosion is another name for natural erosion. 1. comparatively slow 2.
fastest along stream channels and shorelines 3. generates almost 30% of the
US's eroded sediment.
ANSWER 1: Accelerated erosion. increased pace of erosion due to human
activity 2. The main contributors are building, agriculture, and timber
harvesting 3. makes up the remaining 70% of the US's eroded sediment.
Elements that affect erosion - ANSWER 1. climate (a region's rainfall
frequency, intensity, and duration) 2. season (summer storms are stronger) 3.
cover of vegetation 4. topography 5. properties of the soil (texture, organic
content %, structure, and permeability)
The process by which eroded material is moved and deposited is called
sedimentation.
ANSWER 1: Adverse effects of sedimentation. lowers water clarity and blocks
off sunshine. 2. decreases capacity and fills channels. 3. Water quality
downstream may be impacted by contaminants affixed to sediment particles.
The National Pollutant Discharge Elimination System is also known as NPDES-
ANSWER. established by the Clean Water Act of 1972.
1987: The Water Quality Act Amendment to the CWA mandated that the EPA
create a program to control storm discharges under the NPDES program.
, Point source pollution: ANSWER Emissions from easily recognized sources, as
industrial facilities or wastewater treatment plants.
Nonpoint source pollution: ANSWER Runoff from agricultural or urban areas
are examples of less obvious discharges.
The Department of Health and Environmental Control is also known as DHEC-
ANSWER. Although EPA has the power to exercise jurisdiction in SC, this
regulation enforces NPDES laws.
Construction General Permit, or CGP, is the answer. One of the several NPDES
permits that DHEC manages.
Who needs to be covered by NPDES? ANSWER 1. actions that disturb more
than or equal to one acre of land. 2. land disturbance in the SC Coastal Zone
that is smaller than one acre and occurs within half a mile of a receiving water
body. 3. The development of SFR is an exception to the general development
plan.
Who is allowed? ANSWER: Operators (individuals or businesses) are always
granted NPDES permits for a specific discharge. NOT given to a project or
parcel.
Authorization of Discharges - ANSWER The proper Notice of Intent (NOI)
form needs to be filled out and turned in in order to obtain coverage under the
permit. Depending on the Operator Category, there are three different kinds of
NOIs (see chart).
Answer 1 is the primary permittee. possesses the operational authority to seek
changes to the Stormwater Pollution Prevention Plan (SWPPP), construction
plans, and specifications. 2. usually a developer or owner. 3. has daily
operational responsibility over the tasks required to guarantee adherence to
SWPPP.
The primary requirements for permittees are to establish a Comprehensive
Stormwater Pollution Prevention Plan (C-SWPPP) and file a NOI in order to
receive coverage under CGP.
South Carolina, stormwater runoff is the main source of water impairment. 2.
Preserve aquatic environments and surface water downstream.
Erosion is the process by which water, wind, ice, and gravity wear away the
surface of the land.
Geologic erosion is another name for natural erosion. 1. comparatively slow 2.
fastest along stream channels and shorelines 3. generates almost 30% of the
US's eroded sediment.
ANSWER 1: Accelerated erosion. increased pace of erosion due to human
activity 2. The main contributors are building, agriculture, and timber
harvesting 3. makes up the remaining 70% of the US's eroded sediment.
Elements that affect erosion - ANSWER 1. climate (a region's rainfall
frequency, intensity, and duration) 2. season (summer storms are stronger) 3.
cover of vegetation 4. topography 5. properties of the soil (texture, organic
content %, structure, and permeability)
The process by which eroded material is moved and deposited is called
sedimentation.
ANSWER 1: Adverse effects of sedimentation. lowers water clarity and blocks
off sunshine. 2. decreases capacity and fills channels. 3. Water quality
downstream may be impacted by contaminants affixed to sediment particles.
The National Pollutant Discharge Elimination System is also known as NPDES-
ANSWER. established by the Clean Water Act of 1972.
1987: The Water Quality Act Amendment to the CWA mandated that the EPA
create a program to control storm discharges under the NPDES program.
, Point source pollution: ANSWER Emissions from easily recognized sources, as
industrial facilities or wastewater treatment plants.
Nonpoint source pollution: ANSWER Runoff from agricultural or urban areas
are examples of less obvious discharges.
The Department of Health and Environmental Control is also known as DHEC-
ANSWER. Although EPA has the power to exercise jurisdiction in SC, this
regulation enforces NPDES laws.
Construction General Permit, or CGP, is the answer. One of the several NPDES
permits that DHEC manages.
Who needs to be covered by NPDES? ANSWER 1. actions that disturb more
than or equal to one acre of land. 2. land disturbance in the SC Coastal Zone
that is smaller than one acre and occurs within half a mile of a receiving water
body. 3. The development of SFR is an exception to the general development
plan.
Who is allowed? ANSWER: Operators (individuals or businesses) are always
granted NPDES permits for a specific discharge. NOT given to a project or
parcel.
Authorization of Discharges - ANSWER The proper Notice of Intent (NOI)
form needs to be filled out and turned in in order to obtain coverage under the
permit. Depending on the Operator Category, there are three different kinds of
NOIs (see chart).
Answer 1 is the primary permittee. possesses the operational authority to seek
changes to the Stormwater Pollution Prevention Plan (SWPPP), construction
plans, and specifications. 2. usually a developer or owner. 3. has daily
operational responsibility over the tasks required to guarantee adherence to
SWPPP.
The primary requirements for permittees are to establish a Comprehensive
Stormwater Pollution Prevention Plan (C-SWPPP) and file a NOI in order to
receive coverage under CGP.
