The permit, part of the National Pollutant Discharge Elimination System (NPDES), regulates what Badin Business Park can discharge into Badin Lake and an unnamed tributary to Little Mountain Creek. The current permit took effect on August 1, 2019 and expires on October 31, 2022. You can review the permit here.
Badin Business Park monitors and reports stormwater and groundwater discharges at 11 outfalls, or drainage areas, each month. These monitoring reports are submitted to the NC Department of Environmental Quality (DEQ).
Two of the substances that we monitor are fluoride and cyanide which have daily maximum and monthly average limits. The reports show that Badin Business Park complies with all daily maximum limits. There is one area (Outfall 005) that discharges to an unnamed tributary to Little Mountain Creek that has not consistently met monthly average limits for fluoride and cyanide.
In addition, water quality samples are collected from Badin Lake each month. Six samples are collected within approximately 20 feet of the discharges from the diffuser. This includes samples taken on the surface of the water and approximately 10 feet below the surface. View the monitoring results below.
Note: Monitoring results will be updated quarterly.
- The vast majority of America’s public water systems add small amounts of fluoride to their water supply because it has been proven effective at preventing tooth decay. However, higher concentrations of fluoride are discouraged.
- For reference, the drinking water standard for fluoride is 4 parts per million. Badin Business Park’s permit limit (monthly average) is 1.8 parts per million.
- Badin Business Park’s fluoride discharges are within the limits established by the EPA for fluoride in drinking water.
- Certain types of cyanide are more toxic than others. Free cyanide, the most toxic form of cyanide, is ubiquitous in plants such as cherries and apricots.
- Industrial operations, such as aluminum smelting, generate iron cyanide compounds which are not toxic by themselves and do not produce free cyanide under normal environmental conditions.
- Federal water quality standards are based on the measurement of free cyanide, the most toxic form of cyanide. The State of North Carolina currently measures total cyanide when regulating water quality. There are no detectible levels of free cyanide in Badin Business Park’s water discharges.
- For reference, the EPA drinking water standard for cyanide is 200 parts per billion. Badin Business Park’s permit limit (monthly average) is 5 parts per billion.
*Note: Badin Business Park has no detectable levels of free cyanide (the most toxic form of cyanide) in its discharges.