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GT Refractory Solutions, LLC

Carbon And Graphite Products, Lawrenceburg, Tennessee. NPDES permit TN0001872 expired Jun 30, 2026; its limits still apply. Last 12 months: no values over a limit, 3 of 14 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form G monthly (8 values), outfall SW1 form B twice a year
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 3 of 14 reports late

Limits in force (10)

ParameterStatisticLimitMonthsOutfall
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendeddaily maximum≤ 40 mg/Lall year001
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
E. colidaily maximum≤ 941 #/100mLall year001
Solids, total suspendeddaily maximumreport only (mg/L)all yearSW1
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearSW1

How strict are these limits?

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

Same industry: the 3 Electronic and Other Electrical Equipment permits in Tennessee.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TN0001872 · MCP: https://passage-data.com/mcp