Sector-Specific Benchmark Values and Effluent Limitations: Sector - S1. Discharges may be subject to requirements for more than one sector or subsector.
Link to this table
|S1 Airports that use 100,000 gallons or more of glycol-based deicing/anti-icing chemicals and/or 100 tons or more of urea on an average annual basis.||Solids, Total Suspended (TSS)||100 mg/L 1|
|5-Day Carbonaceous, Biochemical Oxygen Demand (CBOD5)||25 mg/L|
|Chemical Oxygen Demand (COD)||120 mg/L|
|Nitrogen, Ammonia, Total (as N)||2.8 mg/L|
|pH 2||6.0-9.0 SU|
1If the Permittee is required to comply with Appendix A, part F.1, the benchmark value for Solids, Total Suspended (TSS) is 65 mg/L, instead of 100 mg/L.
2For purposes of benchmark pH monitoring, the Permittee is required to report instantaneous results only, and not a calculation of pH averages. pH measurements are logarithmic, and the Agency will be performing a logarithmic average for this parameter using the instantaneous results submitted.