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Missouri and Northern Arkansas Railroad

Nonclassifiable Establishments, Carthage, Missouri. NPDES permit MO0139947, in force until Aug 31, 2028. Last 12 months: over a limit 101 times (last August 2026), 2 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (36 values)
Renewal application due
Mar 4, 2028 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
42 values over a limit, 68 required values missing, 7 of 12 reports late

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

All 101 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, 5-day, 20 deg. C, daily maximum< 60≤ 45 mg/L33%
October 2025BOD, 5-day, 20 deg. C, monthly average< 60≤ 30 mg/L100%
October 2025Lead, total recoverable, monthly average< 10≤ 5.1 ug/L96%
October 2025Oil and grease [soxhlet extr.] tot., daily maximum17.2≤ 15 mg/L15%
October 2025Oil and grease [soxhlet extr.] tot., monthly average17.2≤ 10 mg/L72%
October 2025Oxygen demand, chem. [high level] [COD], daily maximum106≤ 90 mg/L18%
October 2025Oxygen demand, chem. [high level] [COD], monthly average106≤ 60 mg/L77%
October 2025Phosphorus, total [as P], daily maximum1.49≤ .5 mg/L198%
October 2025Phosphorus, total [as P], monthly average1.49≤ .5 mg/L198%
November 2025BOD, 5-day, 20 deg. C, daily maximum55.4≤ 45 mg/L23%
November 2025BOD, 5-day, 20 deg. C, monthly average55.4≤ 30 mg/L85%
November 2025Boron, total recoverable, daily maximum14300≤ 3280 ug/L336%
November 2025Boron, total recoverable, monthly average14300≤ 1635 ug/L775%
November 2025Copper, total recoverable, daily maximum885≤ 23.1 ug/L3731%
November 2025Copper, total recoverable, monthly average885≤ 11.5 ug/L7596%
November 2025Lead, total recoverable, daily maximum13.8≤ 10.3 ug/L34%
November 2025Lead, total recoverable, monthly average13.8≤ 5.1 ug/L171%
November 2025Oil and grease [soxhlet extr.] tot., daily maximum83.4≤ 15 mg/L456%
November 2025Oil and grease [soxhlet extr.] tot., monthly average83.4≤ 10 mg/L734%
November 2025Oxygen demand, chem. [high level] [COD], daily maximum104≤ 90 mg/L16%
November 2025Oxygen demand, chem. [high level] [COD], monthly average104≤ 60 mg/L73%
November 2025Solids, total suspended, monthly average59.3≤ 50 mg/L19%
November 2025Zinc, total recoverable, monthly average164≤ 93.8 ug/L75%
January 2026Boron, total recoverable, daily maximum6700≤ 3280 ug/L104%
January 2026Boron, total recoverable, monthly average6700≤ 1635 ug/L310%
January 2026Copper, total recoverable, daily maximum35.2≤ 23.1 ug/L52%
January 2026Copper, total recoverable, monthly average35.2≤ 11.5 ug/L206%
January 2026Lead, total recoverable, daily maximum10.9≤ 10.3 ug/L6%
January 2026Lead, total recoverable, monthly average10.9≤ 5.1 ug/L114%
January 2026Oil and grease [soxhlet extr.] tot., monthly average14.4≤ 10 mg/L44%
January 2026Oxygen demand, chem. [high level] [COD], daily maximum103≤ 90 mg/L14%
January 2026Oxygen demand, chem. [high level] [COD], monthly average103≤ 60 mg/L72%
January 2026Phosphorus, total [as P], daily maximum.723≤ .5 mg/L45%
January 2026Phosphorus, total [as P], monthly average.723≤ .5 mg/L45%
January 2026Zinc, total recoverable, monthly average186≤ 93.8 ug/L98%
February 2026BOD, 5-day, 20 deg. C, daily maximum155≤ 45 mg/L244%
February 2026BOD, 5-day, 20 deg. C, monthly average155≤ 30 mg/L417%
February 2026Boron, total recoverable, daily maximum24300≤ 3280 ug/L641%
February 2026Boron, total recoverable, monthly average24300≤ 1635 ug/L1386%
February 2026Copper, total recoverable, daily maximum84.9≤ 23.1 ug/L268%
February 2026Copper, total recoverable, monthly average84.9≤ 11.5 ug/L638%
February 2026Lead, total recoverable, daily maximum20.8≤ 10.3 ug/L102%
February 2026Lead, total recoverable, monthly average20.8≤ 5.1 ug/L308%
February 2026Oil and grease [soxhlet extr.] tot., daily maximum81.1≤ 15 mg/L441%
February 2026Oil and grease [soxhlet extr.] tot., monthly average81.1≤ 10 mg/L711%
February 2026Oxygen demand, chem. [high level] [COD], daily maximum596≤ 90 mg/L562%
February 2026Oxygen demand, chem. [high level] [COD], monthly average596≤ 60 mg/L893%
February 2026Phosphorus, total [as P], daily maximum10.1≤ .5 mg/L1920%
February 2026Phosphorus, total [as P], monthly average10.1≤ .5 mg/L1920%
February 2026Solids, total suspended, monthly average71.3≤ 50 mg/L43%
February 2026Zinc, total recoverable, daily maximum744≤ 188.2 ug/L295%
February 2026Zinc, total recoverable, monthly average744≤ 93.8 ug/L693%
March 2026Boron, total recoverable, daily maximum4400≤ 3280 ug/L34%
March 2026Boron, total recoverable, monthly average4400≤ 1635 ug/L169%
March 2026Chlorine, total residual, daily maximum890≤ 130 ug/L585%
March 2026Chlorine, total residual, monthly average890≤ 130 ug/L585%
March 2026Copper, total recoverable, daily maximum61.3≤ 23.1 ug/L165%
March 2026Copper, total recoverable, monthly average61.3≤ 11.5 ug/L433%
March 2026Lead, total recoverable, daily maximum49.5≤ 10.3 ug/L381%
March 2026Lead, total recoverable, monthly average49.5≤ 5.1 ug/L871%
March 2026Oil and grease [soxhlet extr.] tot., daily maximum48.7≤ 15 mg/L225%
March 2026Oil and grease [soxhlet extr.] tot., monthly average48.7≤ 10 mg/L387%
March 2026Oxygen demand, chem. [high level] [COD], daily maximum499≤ 90 mg/L454%
March 2026Oxygen demand, chem. [high level] [COD], monthly average499≤ 60 mg/L732%
March 2026Phosphorus, total [as P], daily maximum9.57≤ .5 mg/L1814%
March 2026Phosphorus, total [as P], monthly average9.57≤ .5 mg/L1814%
March 2026Zinc, total recoverable, daily maximum259≤ 188.2 ug/L38%
March 2026Zinc, total recoverable, monthly average259≤ 93.8 ug/L176%
April 2026BOD, 5-day, 20 deg. C, daily maximum57.5≤ 45 mg/L28%
April 2026BOD, 5-day, 20 deg. C, monthly average57.5≤ 30 mg/L92%
April 2026Chlorine, total residual, daily maximum400≤ 130 ug/L208%
April 2026Chlorine, total residual, monthly average400≤ 130 ug/L208%
April 2026E. coli, 30-day geometric mean905≤ 126 #/100mL618%
April 2026E. coli, daily maximum905≤ 630 #/100mL44%
April 2026Lead, total recoverable, daily maximum19.2≤ 10.3 ug/L86%
April 2026Lead, total recoverable, monthly average19.2≤ 5.1 ug/L276%
April 2026Oil and grease [soxhlet extr.] tot., daily maximum61.5≤ 15 mg/L310%
April 2026Oil and grease [soxhlet extr.] tot., monthly average61.5≤ 10 mg/L515%
April 2026Oxygen demand, chem. [high level] [COD], daily maximum192≤ 90 mg/L113%
April 2026Oxygen demand, chem. [high level] [COD], monthly average192≤ 60 mg/L220%
April 2026Phosphorus, total [as P], daily maximum2.86≤ .5 mg/L472%
April 2026Phosphorus, total [as P], monthly average2.86≤ .5 mg/L472%
April 2026Solids, total suspended, monthly average58.8≤ 50 mg/L18%
April 2026Zinc, total recoverable, monthly average146≤ 93.8 ug/L56%
May 2026Chlorine, total residual, daily maximum210≤ 130 ug/L62%
May 2026Chlorine, total residual, monthly average210≤ 130 ug/L62%
May 2026E. coli, 30-day geometric mean341≤ 126 #/100mL171%
May 2026Lead, total recoverable, monthly average< 10≤ 5.1 ug/L96%
May 2026Oil and grease [soxhlet extr.] tot., daily maximum16≤ 15 mg/L7%
May 2026Oil and grease [soxhlet extr.] tot., monthly average16≤ 10 mg/L60%
May 2026Phosphorus, total [as P], daily maximum.763≤ .5 mg/L53%
May 2026Phosphorus, total [as P], monthly average.763≤ .5 mg/L53%
August 2026BOD, 5-day, 20 deg. C, daily maximum77.9≤ 45 mg/L73%
August 2026BOD, 5-day, 20 deg. C, monthly average77.9≤ 30 mg/L160%
August 2026Lead, total recoverable, monthly average< 10≤ 5.1 ug/L96%
August 2026Oil and grease [soxhlet extr.] tot., daily maximum15.9≤ 15 mg/L6%
August 2026Oil and grease [soxhlet extr.] tot., monthly average15.9≤ 10 mg/L59%
August 2026Oxygen demand, chem. [high level] [COD], daily maximum132≤ 90 mg/L47%
August 2026Oxygen demand, chem. [high level] [COD], monthly average132≤ 60 mg/L120%
August 2026Phosphorus, total [as P], daily maximum4.95≤ .5 mg/L890%
August 2026Phosphorus, total [as P], monthly average4.95≤ .5 mg/L890%

Limits in force (42)

ParameterStatisticLimitMonths
Sulfate [as S]daily maximumreport only (mg/L)all year
Sulfate [as S]monthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
Oxygen demand, chem. [high level] [COD]daily maximum≤ 90 mg/Lall year
Oxygen demand, chem. [high level] [COD]monthly average≤ 60 mg/Lall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendeddaily maximum≤ 100 mg/Lall year
Solids, total suspendedmonthly average≤ 50 mg/Lall year
Oil and grease [soxhlet extr.] tot.daily maximum≤ 15 mg/Lall year
Oil and grease [soxhlet extr.] tot.monthly average≤ 10 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LJul–Sep
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LApr–Jun
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LOct–Dec
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LJan–Mar
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LJul–Sep
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LApr–Jun
Nitrogen, ammonia total [as N]monthly average≤ 2.9 mg/LOct–Dec
Nitrogen, ammonia total [as N]monthly average≤ 3.1 mg/LJan–Mar
Phosphorus, total [as P]daily maximum≤ .5 mg/Lall year
Phosphorus, total [as P]monthly average≤ .5 mg/Lall year
Boron, total recoverabledaily maximum≤ 3280 ug/Lall year
Boron, total recoverablemonthly average≤ 1635 ug/Lall year
Zinc, total recoverabledaily maximum≤ 188.2 ug/Lall year
Zinc, total recoverablemonthly average≤ 93.8 ug/Lall year
Lead, total recoverabledaily maximum≤ 10.3 ug/Lall year
Lead, total recoverablemonthly average≤ 5.1 ug/Lall year
Copper, total recoverabledaily maximum≤ 23.1 ug/Lall year
Copper, total recoverablemonthly average≤ 11.5 ug/Lall year
Benzenedaily maximumreport only (mg/L)all year
Benzenemonthly averagereport only (mg/L)all year
Chloridedaily maximum≤ 378 mg/Lall year
Chloridemonthly average≤ 188 mg/Lall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Chlorine, total residualdaily maximum≤ 130 ug/Lall year
Chlorine, total residualmonthly average≤ 130 ug/Lall year
E. colidaily maximum≤ 630 #/100mLApr–Oct
E. coli30-day geometric mean≤ 126 #/100mLApr–Oct
Chlorides + Sulfatesdaily maximum≤ 1000 mg/Lall year
Chlorides + Sulfatesmonthly average≤ 1000 mg/Lall year

How strict are these limits?

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

Same industry: the 9 Nonclassifiable Establishments permits in Missouri.

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