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

Subsector Parameter Benchmark Values
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.

This page was last edited on 30 April 2015, at 19:38.


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