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Mdot, I-55 North, Rest Area, Panola

Transportation Services, Batesville, Mississippi. NPDES permit MS0028886, in force until Apr 30, 2029. Last 12 months: over a limit 15 times (last December 2025), 1 of 1 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form Y yearly
Last report on file
December 2025
Oct 2024 – Sep 2025
11 values over a limit, 0 required values missing, 1 of 1 report late

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

All 15 values over a limit
Period endingParameterReportedLimitOver by
December 2025BOD, 5-day, 20 deg. C, daily maximum11.4 lb/d≤ 3.75 lb/d204%
December 2025BOD, 5-day, 20 deg. C, daily maximum137 mg/L≤ 45 mg/L204%
December 2025BOD, 5-day, 20 deg. C, maximum monthly average10.9 lb/d≤ 2.5 lb/d336%
December 2025BOD, 5-day, 20 deg. C, maximum monthly average131 mg/L≤ 30 mg/L337%
December 2025E. coli, daily maximum< 2420 #/100mL≤ 410 #/100mL490%
December 2025E. coli, maximum monthly average< 2420 #/100mL≤ 126 #/100mL1821%
December 2025Nitrogen, total [as N], daily maximum6.4 lb/d≤ 1.71 lb/d274%
December 2025Nitrogen, total [as N], maximum monthly average4.63 lb/d≤ 1.14 lb/d306%
December 2025Phosphorus, total [as P], daily maximum1.05 lb/d≤ .735 lb/d43%
December 2025Phosphorus, total [as P], maximum monthly average.5 lb/d≤ .49 lb/d2%
December 2025Solids, total suspended, daily maximum7.67 lb/d≤ 3.75 lb/d105%
December 2025Solids, total suspended, daily maximum92 mg/L≤ 45 mg/L104%
December 2025Solids, total suspended, maximum monthly average5.25 lb/d≤ 2.5 lb/d110%
December 2025Solids, total suspended, maximum monthly average63 mg/L≤ 30 mg/L110%
December 2025pH, minimum5.31 SU≥ 6 SU—

Limits in force (30)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimumreport only (mg/L)all year
Oxygen, dissolved [DO]maximumreport only (mg/L)all year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 2.5 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 3.75 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
pHminimumreport only (SU)all year
pHmaximumreport only (SU)all year
Solids, total suspendedmaximum monthly average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 45 mg/Lall year
Solids, total suspendedmaximum monthly average≤ 2.5 lb/dall year
Solids, total suspendeddaily maximum≤ 3.75 lb/dall year
Nitrogen, total [as N]maximum monthly averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, total [as N]maximum monthly average≤ 1.14 lb/dall year
Nitrogen, total [as N]daily maximum≤ 1.71 lb/dall year
Phosphorus, total [as P]maximum monthly averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]maximum monthly average≤ .49 lb/dall year
Phosphorus, total [as P]daily maximum≤ .735 lb/dall year
Flow, in conduit or thru treatment plantmaximum monthly average≤ .01 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualminimum≥ .1 mg/Lall year
Chlorine, total residualmaximum≤ 1 mg/Lall year
E. colimaximum monthly average≤ 126 #/100mLall year
E. colidaily maximum≤ 410 #/100mLall year
Sludge settleability 30 minuteminimumreport only (mL/L)all year
Sludge settleability 30 minutemaximumreport only (mL/L)all year

How strict are these limits?

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

Same industry: the 5 Transportation Services permits in Mississippi.

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