Passage Data · Check a report · Use it from your AI

Loyston Quarry, LLC

Crushed And Broken Limestone, Maynardville, Tennessee. NPDES permit TN0072150, in force until Apr 30, 2029. Last 12 months: over a limit 2 times (last December 2025), 4 of 28 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form G quarterly (12 values), outfall 002 form G quarterly (12 values), outfall SW1 form A yearly, outfall SW2 form A yearly, outfall SW3 form A yearly, outfall SW4 form A yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 4 of 28 reports late

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

Period endingOutfallParameterReportedLimitOver by
December 2025SW1Solids, total suspended, daily maximum158 mg/L≤ 150 mg/L5%
December 2025SW4Solids, total suspended, daily maximum411 mg/L≤ 150 mg/L174%

Limits in force (48)

ParameterStatisticLimitMonthsOutfall
pHminimum≥ 6 SUall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 40 mg/Lall year001
Solids, total suspendedmonthly average≤ 40 mg/Lall year001
Solids, total suspendeddaily maximum≤ 40 mg/Lall year001
Solids, total suspendeddaily maximum≤ 40 mg/Lall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/min)all 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
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year001
pHminimum≥ 6 SUall year002
pHminimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
pHmaximum≤ 9 SUall year002
Solids, total suspendedmonthly average≤ 40 mg/Lall year002
Solids, total suspendedmonthly average≤ 40 mg/Lall year002
Solids, total suspendeddaily maximum≤ 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 plantmonthly averagereport only (gal/min)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year002
pHminimum≥ 6 SUall yearSW1
pHmaximum≤ 9 SUall yearSW1
Solids, total suspendeddaily maximum≤ 150 mg/Lall yearSW1
Oil & Greasedaily maximum≤ 15 mg/Lall yearSW1
Flow, in conduit or thru treatment plantminimumreport only (gal/min) (alert, not enforceable)all yearSW1
Flow, in conduit or thru treatment plantmaximumreport only (gal/min) (alert, not enforceable)all yearSW1
pHminimum≥ 6 SU (alert, not enforceable)all yearSW2
pHmaximum≤ 9 SU (alert, not enforceable)all yearSW2
Solids, total suspendeddaily maximum≤ 150 mg/Lall yearSW2
Oil & Greasedaily maximum≤ 15 mg/Lall yearSW2
Flow, in conduit or thru treatment plantminimumreport only (gal/min) (alert, not enforceable)all yearSW2
Flow, in conduit or thru treatment plantmaximumreport only (gal/min) (alert, not enforceable)all yearSW2
pHminimum≥ 6 SU (alert, not enforceable)all yearSW3
pHmaximum≤ 9 SU (alert, not enforceable)all yearSW3
Solids, total suspendeddaily maximum≤ 150 mg/Lall yearSW3
Oil & Greasedaily maximum≤ 15 mg/Lall yearSW3
Flow, in conduit or thru treatment plantminimumreport only (gal/min) (alert, not enforceable)all yearSW3
Flow, in conduit or thru treatment plantmaximumreport only (gal/min) (alert, not enforceable)all yearSW3
pHminimum≥ 6 SU (alert, not enforceable)all yearSW4
pHmaximum≤ 9 SU (alert, not enforceable)all yearSW4
Solids, total suspendeddaily maximum≤ 150 mg/Lall yearSW4
Oil & Greasedaily maximum≤ 15 mg/Lall yearSW4
Flow, in conduit or thru treatment plantminimumreport only (gal/min) (alert, not enforceable)all yearSW4
Flow, in conduit or thru treatment plantmaximumreport only (gal/min) (alert, not enforceable)all yearSW4

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.

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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TN0072150 · MCP: https://passage-data.com/mcp