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Matalco US Inc

Secondary Nonferrous Metals, Shelbyville, Kentucky. NPDES permit KY0104493, in force until Jan 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form 2 quarterly (32 values), outfall 002 form 2 quarterly (16 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 8 reports late

Limits in force (48)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximum≤ 89 deg Fall year001
pHminimum≥ 7 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Solids, total suspendedmonthly average≤ 20.748 lb/dall year001
Solids, total suspendeddaily maximum≤ 28.947 lb/dall year001
Oil & Greasemonthly averagereport only (mg/L)all year001
Oil & Greasedaily maximumreport only (mg/L)all year001
Oil & Greasemonthly average≤ 15.295 lb/dall year001
Oil & Greasedaily maximum≤ 15.955 lb/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 4.07 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ 81.774 lb/dall year001
Nitrogen, ammonia total [as N]daily maximum≤ 186.06 lb/dall year001
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all year001
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year001
Zinc, total recoverablemonthly average≤ .226 mg/Lall year001
Zinc, total recoverabledaily maximum≤ .226 mg/Lall year001
Zinc, total recoverablemonthly average≤ .586 lb/dall year001
Zinc, total recoverabledaily maximum≤ 1.424 lb/dall year001
Aluminum, total recoverablemonthly averagereport only (mg/L)all year001
Aluminum, total recoverabledaily maximumreport only (mg/L)all year001
Aluminum, total recoverablemonthly average≤ 3.782 lb/dall year001
Aluminum, total recoverabledaily maximum≤ 8.526 lb/dall year001
Lead, total recoverablemonthly average≤ .008 mg/Lall year001
Lead, total recoverabledaily maximum≤ .2111 mg/Lall year001
Lead, total recoverablemonthly average≤ .182 lb/dall year001
Lead, total recoverabledaily maximum≤ .391 lb/dall 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
pHminimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
Solids, total suspendedmonthly averagereport only (mg/L)all year002
Solids, total suspendeddaily maximum≤ 60 mg/Lall year002
Oil & Greasemonthly averagereport only (mg/L)all year002
Oil & Greasedaily maximum≤ 15 mg/Lall year002
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all year002
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year002
Zinc, total recoverablemonthly averagereport only (mg/L)all year002
Zinc, total recoverabledaily maximumreport only (mg/L)all year002
Aluminum, total recoverablemonthly averagereport only (mg/L)all year002
Aluminum, total recoverabledaily maximumreport only (mg/L)all year002
Copper, total recoverablemonthly averagereport only (mg/L)all year002
Copper, total recoverabledaily maximum≤ .023 mg/Lall year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002

How strict are these limits?

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

Same industry: the 22 Primary Metal Industries permits in Kentucky.

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Your permit document is the final word. As JSON: /api/v1/permits/KY0104493 · MCP: https://passage-data.com/mcp