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Hinkle Contracting Company, LLC

Crushed And Broken Limestone, Jellico, Tennessee. NPDES permit TN0055140, in force until Jun 30, 2030. Last 12 months: over a limit 2 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 002 form G quarterly (6 values), outfall 003 form G quarterly (6 values), outfall 004 form G quarterly (6 values), outfall 005 form G quarterly (6 values), outfall 006 form G quarterly (6 values), outfall 007 form G quarterly (6 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
9 values over a limit, 0 required values missing, 0 of 81 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
April 2026Solids, total suspended, daily maximum528 mg/L≤ 40 mg/L1220%
April 2026Solids, total suspended, monthly average< 181.3 mg/L≤ 40 mg/L353%

Limits in force (36)

ParameterStatisticLimitMonthsOutfall
pHminimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
Solids, total suspendedmonthly average≤ 40 mg/Lall year002
Solids, total suspendeddaily maximum≤ 40 mg/Lall year002
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/min)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year002
pHminimum≥ 6 SUall year003
pHmaximum≤ 9 SUall year003
Solids, total suspendedmonthly average≤ 40 mg/Lall year003
Solids, total suspendeddaily maximum≤ 40 mg/Lall year003
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/min)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year003
pHminimum≥ 6 SUall year004
pHmaximum≤ 9 SUall year004
Solids, total suspendedmonthly average≤ 40 mg/Lall year004
Solids, total suspendeddaily maximum≤ 40 mg/Lall year004
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/min)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year004
pHminimum≥ 6 SUall year005
pHmaximum≤ 9 SUall year005
Solids, total suspendedmonthly average≤ 40 mg/Lall year005
Solids, total suspendeddaily maximum≤ 40 mg/Lall year005
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/min)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year005
pHminimum≥ 6 SUall year006
pHmaximum≤ 9 SUall year006
Solids, total suspendedmonthly average≤ 40 mg/Lall year006
Solids, total suspendeddaily maximum≤ 40 mg/Lall year006
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/min)all year006
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year006
pHminimum≥ 6 SUall year007
pHmaximum≤ 9 SUall year007
Solids, total suspendedmonthly average≤ 40 mg/Lall year007
Solids, total suspendeddaily maximum≤ 40 mg/Lall year007
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/min)all year007
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year007

How strict are these limits?

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

Same industry: the 353 Mining and Quarrying of Nonmetallic Minerals permits in Tennessee.

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On EPA ECHO: Facility report · DMR history

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