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General Motors LLC

Motor Vehicle Parts And Accessories, major discharger, Tonawanda, New York. NPDES permit NY0000574, in force until Mar 31, 2030. Last 12 months: over a limit 3 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form M monthly (22 values), outfall 003 form M monthly (10 values), outfall 01B form M monthly (11 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 38 reports late

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

Period endingOutfallParameterReportedLimitOver by
February 2026001PCB-1242, monthly average120 ng/L≤ 95 ng/L26%
June 2026001PCB-1248, monthly average110 ng/L≤ 95 ng/L16%
July 2026003pH, maximum9.2 SU≤ 9 SU—

Limits in force (45)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitdaily maximum≤ 90 deg Fall year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendeddaily maximum≤ 45 mg/Lall year001
Oil & Greasedaily maximum≤ 15 mg/Lall year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Copper, total [as Cu]daily maximum≤ .05 mg/Lall year001
Iron, total [as Fe]daily maximum≤ 1.5 mg/Lall year001
Zinc, total [as Zn]daily maximum≤ .2 mg/Lall year001
Aluminum, total [as Al]daily maximum≤ 2 mg/Lall year001
Total phenolsmonthly averagereport only (mg/L)all year001
PCB-1016monthly average≤ 95 ng/Lall year001
PCB-1221monthly average≤ 95 ng/Lall year001
PCB-1232monthly average≤ 95 ng/Lall year001
PCB-1242monthly average≤ 95 ng/Lall year001
PCB-1248monthly average≤ 95 ng/Lall year001
PCB-1254monthly average≤ 95 ng/Lall year001
PCB-1260monthly average≤ 95 ng/Lall 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
Chlorine, total residualdaily maximum≤ .5 mg/Lall year001
Chlorine, total residualdaily maximum≤ 2 mg/Lall year001
Mercury, total [as Hg]daily maximum≤ 50 ng/Lall year001
Flow ratemonthly averagereport only (gal/d)all year003
Flow ratedaily maximumreport only (gal/d)all year003
pHminimum≥ 6 SUall year003
pHmaximum≤ 9 SUall year003
Solids, total suspendeddaily maximumreport only (mg/L)all year003
Oil & Greasedaily maximum≤ 15 mg/Lall year003
Phosphorus, total [as P]monthly averagereport only (mg/L)all year003
Aluminum, total [as Al]daily maximumreport only (mg/L)all year003
Chlorine, total residualdaily maximum≤ .5 mg/Lall year003
Chlorine, total residualdaily maximum≤ 2 mg/Lall year003
Mercury, total [as Hg]daily maximum≤ 50 ng/Lall year003
pHminimum≥ 6 SUall year01B
pHmaximum≤ 9 SUall year01B
PCB-1016monthly average≤ 95 ng/Lall year01B
PCB-1221monthly average≤ 95 ng/Lall year01B
PCB-1232monthly average≤ 95 ng/Lall year01B
PCB-1242monthly average≤ 95 ng/Lall year01B
PCB-1248monthly average≤ 95 ng/Lall year01B
PCB-1254monthly average≤ 95 ng/Lall year01B
PCB-1260monthly average≤ 95 ng/Lall year01B
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year01B
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year01B

How strict are these limits?

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

Same industry: the 6 Transportation Equipment permits in New York.

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

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Your permit document is the final word. As JSON: /api/v1/permits/NY0000574 · MCP: https://passage-data.com/mcp