Sector - H

Sector-Specific Benchmark Values and Effluent Limitations: Sector - H. Discharges may be subject to requirements for more than one sector or subsector.
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Subsector	Parameter	Benchmark Values
H1 Coal Mines and Related Area	Solids, Total Suspended (TSS)	100 mg/L 1
	Aluminum, Total (as Al)	1.5 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.