What is considered an illicit discharge?
Illicit discharges are defined as a storm drain that has measurable flow during dry weather containing pollutants and/or pathogens. discharge to an MS4 that is not composed entirely of storm water, except allowable discharges pursuant to an NPDES permit, including those resulting from fire fighting activities.
Which of the following is an example of an illicit discharge?
Here are examples of illicit discharges that are prohibited from Knox County storm sewers and creeks. Discharge from a utility sink (grey water) into a creek. Chemical dumping into a storm drainpipe. Bacteria and nutrients from failed septic system going into a stream.
Is sediment an illicit discharge?
Another example of direct illicit discharge is when excess chemicals or household products are being poured directly into the storm drain. On the other hand, indirect illicit discharge would consist of sediment runoff, or nutrient and organic matter runoff with rainwater.
What is illicit discharge detection and elimination?
In general, illicit discharges include any discharge into a storm drain system that is not entirely composed of stormwater. Illicit discharges often contain pathogens, nutrients, surfactants, and various toxic pollutants. Phase II MS4s are required to develop a program to detect and eliminate these illicit discharges.
What is MS4 stormwater?
An MS4 is a conveyance or system of conveyances that is: owned by a state, city, town, village, or other public entity that discharges to waters of the U.S., designed or used to collect or convey stormwater (e.g., storm drains, pipes, ditches), not a combined sewer, and.
What can be discharged into a storm drain?
Ideally, stormwater runoff would be free of contaminants. In reality, it picks up pollutants such as animal waste, pesticides, fertilizers, salt, oil and grease, soil and debris and transports them to waterways where they are discharged with no treatment.
What is illicit connection?
An illicit connection is any unauthorized pipe, ditch, or other manmade structure that is physically connected to a property or drainage system. These are often found during construction.
What does an MS4 permit do?
MS4 permits authorize cities, counties, or other governmental entities to discharge storm- water collected by their storm sewer systems to waters of the United States.
What is MS4 permit California?
Municipal Program Phase I MS4 permits require the discharger to develop and implement a Storm Water Management Plan/Program with the goal of reducing the discharge of pollutants to the maximum extent practicable.
How do you prevent illicit discharge?
Reduce How You Pollute 1. Freeze grease and oils and dispose of them in the trash instead of pouring down the sink. 5. Blow grass clipping and leaves back onto your yard, away from the street where they can reach a storm drain.
Where does water in storm drains go?
The storm drainage system carries rainwater directly to creeks, streams, ponds and reservoirs. That is why it’s important to keep trash, motor oil, pesticides, and other chemicals from entering the storm drain – everything that goes in comes out in our waterways. Polluted water is harmful to fish, wildlife, and humans.
Why is it called MS4?
MS4 is short for, “Municipal Separate Storm Sewer System”, where the word “Municipal” refers to a unit of local government like a borough or a township, but may also refer to an organization responsible for the administration of a developed area.