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Maymead Materials, Inc.

Crushed And Broken Limestone, Mountain City, Tennessee. NPDES permit TN0066206, in force until Apr 30, 2029. Last 12 months: no values over a limit, 10 of 21 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 004 form G quarterly (12 values), outfall 007 form G quarterly (12 values), outfall SW3 form Y yearly, outfall SW6 form Y yearly, outfall SW8 form Y yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 27 reports late

Limits in force (42)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6 SUall year004
pHdaily minimum≥ 6 SUall year004
pHdaily maximum≤ 9 SUall year004
pHdaily maximum≤ 9 SUall year004
Solids, total suspendedmonthly average≤ 40 mg/Lall year004
Solids, total suspendedmonthly average≤ 40 mg/Lall year004
Solids, total suspendeddaily maximum≤ 40 mg/Lall year004
Solids, total suspendeddaily maximum≤ 40 mg/Lall year004
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/min) (alert, not enforceable)all year004
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/min) (alert, not enforceable)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min) (alert, not enforceable)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min) (alert, not enforceable)all year004
pHminimum≥ 6 SUall year007
pHminimum≥ 6 SUall year007
pHmaximum≤ 9 SUall year007
pHmaximum≤ 9 SUall year007
Solids, total suspendedmonthly average≤ 40 mg/Lall year007
Solids, total suspendedmonthly average≤ 40 mg/Lall year007
Solids, total suspendeddaily maximum≤ 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 plantmonthly averagereport only (gal/min)all year007
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year007
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year007
pHminimum≥ 6 SU (alert, not enforceable)all yearSW3
pHmaximum≤ 9 SU (alert, not enforceable)all yearSW3
Solids, total suspendeddaily maximum≤ 150 mg/L (alert, not enforceable)all yearSW3
Oil & Greasedaily maximum≤ 15 mg/L (alert, not enforceable)all 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 yearSW6
pHmaximum≤ 9 SU (alert, not enforceable)all yearSW6
Solids, total suspendeddaily maximum≤ 150 mg/L (alert, not enforceable)all yearSW6
Oil & Greasedaily maximum≤ 15 mg/L (alert, not enforceable)all yearSW6
Flow, in conduit or thru treatment plantminimumreport only (gal/min) (alert, not enforceable)all yearSW6
Flow, in conduit or thru treatment plantmaximumreport only (gal/min) (alert, not enforceable)all yearSW6
pHminimum≥ 6 SU (alert, not enforceable)all yearSW8
pHmaximum≤ 9 SU (alert, not enforceable)all yearSW8
Solids, total suspendeddaily maximum≤ 150 mg/L (alert, not enforceable)all yearSW8
Oil & Greasedaily maximum≤ 15 mg/L (alert, not enforceable)all yearSW8
Flow, in conduit or thru treatment plantminimumreport only (gal/min) (alert, not enforceable)all yearSW8
Flow, in conduit or thru treatment plantmaximumreport only (gal/min) (alert, not enforceable)all yearSW8

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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Your permit document is the final word. As JSON: /api/v1/permits/TN0066206 · MCP: https://passage-data.com/mcp