CEPSCI Certification Exam| Questions and Answers, 100% Correct| Latest

CEPSCI Certification Exam| Questions and Answers, 100% Correct| Latest Why erosion prevention and sediment control are important? 1. Stormwater runoff is leading cause of impaired water in SC. 2. Protect downstream surface water and aquatic habitats Erosion Process by which land surface is worn away by action of water, wind, ice and gravity. Natural erosion aka Geologic erosion. 1. relative slow 2. most rapid along shorelines and stream channels 3. produces about 30% of eroded sediment in US Accelerated erosion 1. erosion at elevated rate bc of human activity 2. agriculture, timber harvesting and construction are primary contributors 3. accounts for remaining 70% of eroded sediment in US Factors influencing erosion 1. climate (frequency, intensity and duration of rainfall for a region) 2. season (more intense storms in summer) 3. vegetative cover 4. topography 5. soil characteristics (texture, percentage of organic content, structure, and permeability) Sedimentation Process by which eroded material is transported and deposited. Negative impacts of sedimentation 1. screens out sunlight/reduces water clarity. 2. fills channels and reduces capacity. 3. pollutants attached to sediment particles can impact downstream water quality. NPDES aka National Pollutant Discharge Elimination System. Created by the 1972 Clean Water Act. 1987 Amendment to CWA called Water Quality Act required EPA to develop program to regulate storm discharges under NPDES program. Point source pollution Discharges from readily identifiable sources such as wastewater treatment plants or industrial facilities. Nonpoint source pollution Discharges that are less easily identifiable such as runoff from urbanized or agricultural areas. DHEC aka Department of Health and Environmental Control. This regulation administers NPDES regulations, but EPA has authority to exert jurisdiction in SC. CGP aka Construction General Permit. One of several NPDES permits administered by