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Bituminous Coal - Underground, Devonia, Tennessee. NPDES permit TN0079561 expired Sep 30, 2025. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form G quarterly (16 values), outfall SW1 form A yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 3 of 13 reports late

Limits in force (24)

These limits come from an earlier version of this permit (version 0 in EPA's file); its current version holds none yet. A renewal can change them.

ParameterStatisticLimitMonthsOutfall
Specific conductancemonthly averagereport only (uS/cm)all year001
Specific conductancedaily maximumreport only (uS/cm)all year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 35 mg/Lall year001
Solids, total suspendeddaily maximum≤ 70 mg/Lall year001
Solids, settleablemaximum≤ .5 mL/Lall year001
Solids, settleabledaily maximum≤ .5 mL/Lall year001
Iron, total [as Fe]monthly average≤ 3 mg/Lall year001
Iron, total [as Fe]daily maximum≤ 6 mg/Lall year001
Manganese, total [as Mn]monthly average≤ 2 mg/Lall year001
Manganese, total [as Mn]daily maximum≤ 4 mg/Lall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/min)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year001
Sulfates, total [as SO4]monthly averagereport only (mg/L)all year001
Sulfates, total [as SO4]daily maximumreport only (mg/L)all year001
pHminimum≥ 5 SU (alert, not enforceable)all yearSW1
pHminimum≥ 5 SU (alert, not enforceable)all yearSW1
pHmaximum≤ 9 SU (alert, not enforceable)all yearSW1
pHmaximum≤ 9 SU (alert, not enforceable)all yearSW1
Solids, total suspendedmaximum≤ 150 mg/L (alert, not enforceable)all yearSW1
Solids, total suspendedmaximum≤ 150 mg/L (alert, not enforceable)all yearSW1
Oil & Greasemaximum≤ 15 mg/L (alert, not enforceable)all yearSW1
Oil & Greasemaximum≤ 15 mg/L (alert, not enforceable)all yearSW1

How strict are these limits?

Cited limits by parameter: Tennessee's rules and the federal ones.

Same industry: the 30 Coal Mining permits in Tennessee.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TN0079561 · MCP: https://passage-data.com/mcp