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General Motors LLC - GPS Bedford

Aluminum Foundries, major discharger, Bedford, Indiana. NPDES permit IN0003573, in force until Nov 30, 2030. Last 12 months: over a limit 28 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (39 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
18 values over a limit, 0 required values missing, 0 of 16 reports late

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

All 28 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, 5-day, 20 deg. C, daily maximum49.8 mg/L≤ 20 mg/L149%
October 2025BOD, 5-day, 20 deg. C, monthly average27.03 mg/L≤ 10 mg/L170%
November 2025BOD, 5-day, 20 deg. C, daily maximum76 mg/L≤ 20 mg/L280%
November 2025BOD, 5-day, 20 deg. C, monthly average26.57778 mg/L≤ 10 mg/L166%
December 2025BOD, 5-day, 20 deg. C, daily maximum160 mg/L≤ 30 mg/L433%
December 2025BOD, 5-day, 20 deg. C, monthly average132.75714 mg/L≤ 15 mg/L785%
January 2026BOD, 5-day, 20 deg. C, daily maximum340 mg/L≤ 30 mg/L1033%
January 2026BOD, 5-day, 20 deg. C, monthly average261.42857 mg/L≤ 15 mg/L1643%
February 2026BOD, 5-day, 20 deg. C, daily maximum570 mg/L≤ 30 mg/L1800%
February 2026BOD, 5-day, 20 deg. C, monthly average408.33333 mg/L≤ 15 mg/L2622%
March 2026BOD, 5-day, 20 deg. C, daily maximum660 mg/L≤ 30 mg/L2100%
March 2026BOD, 5-day, 20 deg. C, monthly average334.83333 mg/L≤ 15 mg/L2132%
March 2026Solids, total suspended, daily maximum28.238479 lb/d< 14.6 lb/d93%
March 2026Solids, total suspended, monthly average28.238479 lb/d< 14.6 lb/d93%
April 2026BOD, 5-day, 20 deg. C, daily maximum651 mg/L≤ 30 mg/L2070%
April 2026BOD, 5-day, 20 deg. C, monthly average366.54546 mg/L≤ 15 mg/L2344%
May 2026BOD, 5-day, 20 deg. C, daily maximum420 mg/L≤ 20 mg/L2000%
May 2026BOD, 5-day, 20 deg. C, monthly average270.56667 mg/L≤ 10 mg/L2606%
May 2026Oil and grease, hexane extr method, daily maximum< 19.96343 lb/d< 14.6 lb/d37%
May 2026Oil and grease, hexane extr method, monthly average< 19.96343 lb/d< 14.6 lb/d37%
May 2026Toxicity [chronic], Ceriodaphnia dubia, maximum16 tox chronic≤ 1 tox chronic1500%
June 2026BOD, 5-day, 20 deg. C, daily maximum420 mg/L≤ 20 mg/L2000%
June 2026BOD, 5-day, 20 deg. C, monthly average270.7 mg/L≤ 10 mg/L2607%
June 2026Toxicity [chronic], Ceriodaphnia dubia, maximum18 tox chronic≤ 1 tox chronic1700%
July 2026BOD, 5-day, 20 deg. C, daily maximum350 mg/L≤ 20 mg/L1650%
July 2026BOD, 5-day, 20 deg. C, monthly average245.49091 mg/L≤ 10 mg/L2355%
August 2026BOD, 5-day, 20 deg. C, daily maximum350 mg/L≤ 20 mg/L1650%
August 2026BOD, 5-day, 20 deg. C, monthly average286.25 mg/L≤ 10 mg/L2763%

Limits in force (45)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/LMay–Nov
BOD, 5-day, 20 deg. Cmonthly average≤ 15 mg/LJan, Feb, Mar, Apr, Dec
BOD, 5-day, 20 deg. Cdaily maximum≤ 20 mg/LMay–Nov
BOD, 5-day, 20 deg. Cdaily maximum≤ 30 mg/LJan, Feb, Mar, Apr, Dec
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspendedmonthly average< 14.6 lb/dall year
Solids, total suspendeddaily maximum< 14.6 lb/dall year
Oil and grease, hexane extr methodmonthly averagereport only (mg/L)all year
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)all year
Oil and grease, hexane extr methodmonthly average< 14.6 lb/dall year
Oil and grease, hexane extr methoddaily maximum< 14.6 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 1.48 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1.52 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 3.43 mg/LMay–Nov
Nitrogen, ammonia total [as N]daily maximum≤ 3.54 mg/LJan, Feb, Mar, Apr, Dec
Zinc, total recoverablemonthly averagereport only (mg/L)all year
Zinc, total recoverabledaily maximumreport only (mg/L)all year
Zinc, total recoverablemonthly average≤ .2 lb/dall year
Zinc, total recoverabledaily maximum≤ .35 lb/dall year
Lead, total recoverablemonthly averagereport only (mg/L)all year
Lead, total recoverabledaily maximumreport only (mg/L)all year
Lead, total recoverablemonthly average≤ .09 lb/dall year
Lead, total recoverabledaily maximum≤ .18 lb/dall year
Copper, total recoverablemonthly averagereport only (mg/L)all year
Copper, total recoverabledaily maximumreport only (mg/L)all year
Copper, total recoverablemonthly average≤ .09 lb/dall year
Copper, total recoverabledaily maximum≤ .17 lb/dall year
Phenolmonthly averagereport only (mg/L)all year
Phenoldaily maximumreport only (mg/L)all year
Phenolmonthly average≤ .18 lb/dall year
Phenoldaily maximum≤ .18 lb/dall year
Polychlorinated biphenyls [PCBs]monthly average< .3 ug/Lall year
Polychlorinated biphenyls [PCBs]daily maximum< .3 ug/Lall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly average< .06 mg/Lall year
Chlorine, total residualdaily maximum< .06 mg/Lall year
Mercury, total recoverablemonthly average≤ 12 ng/LFeb, Apr, Jun, Aug, Oct, Dec
Mercury, total recoverabledaily maximum≤ 20 ng/LFeb, Apr, Jun, Aug, Oct, Dec
Flow, totalmonthly totalreport only (Mgal/mo)all year

How strict are these limits?

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

Same industry: the 54 Primary Metal Industries permits in Indiana.

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