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Martin Marietta Materials, Inc.

Construction Sand And Gravel, Monterey, Tennessee. NPDES permit TN0066265, in force until Feb 29, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 002 form G quarterly (12 values), outfall 003 form G quarterly (12 values), outfall 004 form G quarterly (12 values), outfall 005 form G quarterly (12 values), outfall SW01 form G yearly, outfall SW02 form Y yearly
Renewal application due
Sep 2, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 50 reports late

Limits in force (60)

ParameterStatisticLimitMonthsOutfall
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 year003
pHminimum≥ 6 SUall year003
pHmaximum≤ 9 SUall year003
pHmaximum≤ 9 SUall year003
Solids, total suspendedmonthly average≤ 40 mg/Lall year003
Solids, total suspendedmonthly average≤ 40 mg/Lall year003
Solids, total suspendeddaily maximum≤ 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 plantmonthly averagereport only (gal/min)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year003
pHminimum≥ 6 SUall year004
pHminimum≥ 6 SUall year004
pHmaximum≤ 9 SUall year004
pHmaximum≤ 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)all 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
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year004
pHminimum≥ 6 SUall year005
pHminimum≥ 6 SUall year005
pHmaximum≤ 9 SUall year005
pHmaximum≤ 9 SUall year005
Solids, total suspendedmonthly average≤ 40 mg/Lall year005
Solids, total suspendedmonthly average≤ 40 mg/Lall year005
Solids, total suspendeddaily maximum≤ 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 plantmonthly averagereport only (gal/min)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year005
pHminimum≥ 6 SUall yearSW01
pHmaximum≤ 9 SUall yearSW01
Solids, total suspendedmaximum≤ 150 mg/Lall yearSW01
Oil & Greasemaximum≤ 15 mg/Lall yearSW01
Flow, in conduit or thru treatment plantminimumreport only (gal/min) (alert, not enforceable)all yearSW01
Flow, in conduit or thru treatment plantmaximumreport only (gal/min) (alert, not enforceable)all yearSW01
pHminimum≥ 6 SU (alert, not enforceable)all yearSW02
pHmaximum≤ 9 SU (alert, not enforceable)all yearSW02
Solids, total suspendeddaily maximum≤ 150 mg/L (alert, not enforceable)all yearSW02
Oil & Greasedaily maximum≤ 15 mg/L (alert, not enforceable)all yearSW02
Flow, in conduit or thru treatment plantminimumreport only (gal/min) (alert, not enforceable)all yearSW02
Flow, in conduit or thru treatment plantmaximumreport only (gal/min) (alert, not enforceable)all yearSW02

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

Your permit document is the final word. As JSON: /api/v1/permits/TN0066265 · MCP: https://passage-data.com/mcp