Sector - H
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Sector-Specific Benchmark Values and Effluent Limitations. Discharges may be subject to requirements for more than one sector or subsector.

Subsector Parameter Benchmark Values
H1 Coal Mines and Related Area Solids, Total Suspended (TSS) 100 mg/L 1
Aluminum, Total (as Al) 0.75 mg/L
Iron, Total (as Fe) 1.0 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.