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Mobile Home Site Operators, Milan, Illinois. NPDES permit IL0052825, in force until Aug 31, 2028. Last 12 months: over a limit 58 times (last August 2026), 170 required values missing, 16 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 001 form 0 monthly (21 values), outfall INF form L monthly (4 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
30 values over a limit, 146 required values missing, 0 of 24 reports late

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

All 58 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], daily maximum3.7 mg/L≤ 3 mg/L23%
October 2025Nitrogen, ammonia total [as N], monthly average3.7 mg/L≤ 1 mg/L270%
November 2025BOD, carbonaceous [5 day, 20 C], daily maximum130 mg/L≤ 20 mg/L550%
November 2025BOD, carbonaceous [5 day, 20 C], daily maximum50.74 lb/d≤ 13 lb/d290%
November 2025BOD, carbonaceous [5 day, 20 C], monthly average130 mg/L≤ 10 mg/L1200%
November 2025BOD, carbonaceous [5 day, 20 C], monthly average50.74 lb/d≤ 6.7 lb/d657%
November 2025Nitrogen, ammonia total [as N], daily maximum6.9 mg/L≤ 5.7 mg/L21%
November 2025Nitrogen, ammonia total [as N], monthly average2.69 lb/d≤ 2.3 lb/d17%
November 2025Nitrogen, ammonia total [as N], monthly average6.9 mg/L≤ 3.4 mg/L103%
December 2025Nitrogen, ammonia total [as N], daily maximum9.2 lb/d≤ 3.8 lb/d142%
December 2025Nitrogen, ammonia total [as N], daily maximum9.2 lb/d≤ 3.8 lb/d142%
December 2025Nitrogen, ammonia total [as N], daily maximum9.2 mg/L≤ 5.7 mg/L61%
December 2025Nitrogen, ammonia total [as N], daily maximum9.2 mg/L≤ 5.7 mg/L61%
December 2025Nitrogen, ammonia total [as N], monthly average9.2 lb/d≤ 2.3 lb/d300%
December 2025Nitrogen, ammonia total [as N], monthly average9.2 lb/d≤ 2.3 lb/d300%
December 2025Nitrogen, ammonia total [as N], monthly average9.2 mg/L≤ 3.4 mg/L171%
December 2025Nitrogen, ammonia total [as N], monthly average9.2 mg/L≤ 3.4 mg/L171%
January 2026BOD, carbonaceous [5 day, 20 C], daily maximum33 mg/L≤ 20 mg/L65%
January 2026BOD, carbonaceous [5 day, 20 C], daily maximum33 mg/L≤ 20 mg/L65%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average33 mg/L≤ 10 mg/L230%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average33 mg/L≤ 10 mg/L230%
January 2026Nitrogen, ammonia total [as N], daily maximum7.3 mg/L≤ 5.7 mg/L28%
January 2026Nitrogen, ammonia total [as N], daily maximum7.3 mg/L≤ 5.7 mg/L28%
January 2026Nitrogen, ammonia total [as N], monthly average7.3 mg/L≤ 3.4 mg/L115%
January 2026Nitrogen, ammonia total [as N], monthly average7.3 mg/L≤ 3.4 mg/L115%
January 2026Solids, total suspended, daily maximum45 mg/L≤ 24 mg/L88%
January 2026Solids, total suspended, daily maximum45 mg/L≤ 24 mg/L88%
January 2026Solids, total suspended, monthly average45 mg/L≤ 12 mg/L275%
January 2026Solids, total suspended, monthly average45 mg/L≤ 12 mg/L275%
February 2026Nitrogen, ammonia total [as N], daily maximum22 mg/L≤ 5.7 mg/L286%
February 2026Nitrogen, ammonia total [as N], daily maximum22 mg/L≤ 5.7 mg/L286%
February 2026Nitrogen, ammonia total [as N], monthly average22 mg/L≤ 3.4 mg/L547%
February 2026Nitrogen, ammonia total [as N], monthly average22 mg/L≤ 3.4 mg/L547%
February 2026Solids, total suspended, daily maximum47 mg/L≤ 24 mg/L96%
February 2026Solids, total suspended, daily maximum47 mg/L≤ 24 mg/L96%
February 2026Solids, total suspended, monthly average47 mg/L≤ 12 mg/L292%
February 2026Solids, total suspended, monthly average47 mg/L≤ 12 mg/L292%
April 2026Nitrogen, ammonia total [as N], daily maximum5.2 mg/L≤ 3 mg/L73%
April 2026Nitrogen, ammonia total [as N], daily maximum5.2 mg/L≤ 3 mg/L73%
April 2026Nitrogen, ammonia total [as N], monthly average5.2 mg/L≤ 1 mg/L420%
April 2026Nitrogen, ammonia total [as N], monthly average5.2 mg/L≤ 1 mg/L420%
July 2026BOD, carbonaceous [5 day, 20 C], monthly average14 mg/L≤ 10 mg/L40%
July 2026Nitrogen, ammonia total [as N], daily maximum3.6 lb/d≤ 2 lb/d80%
July 2026Nitrogen, ammonia total [as N], daily maximum39 mg/L≤ 3 mg/L1200%
July 2026Nitrogen, ammonia total [as N], monthly average3.6 lb/d≤ .67 lb/d437%
July 2026Nitrogen, ammonia total [as N], monthly average39 mg/L≤ 1 mg/L3800%
July 2026Nitrogen, ammonia total [as N], weekly average3.6 lb/d≤ 1.9 lb/d89%
July 2026Nitrogen, ammonia total [as N], weekly average39 mg/L≤ 2.8 mg/L1293%
July 2026Solids, total suspended, daily maximum38 mg/L≤ 24 mg/L58%
July 2026Solids, total suspended, monthly average38 mg/L≤ 12 mg/L217%
August 2026Nitrogen, ammonia total [as N], daily maximum10.8 lb/d≤ 2 lb/d440%
August 2026Nitrogen, ammonia total [as N], daily maximum13 mg/L≤ 3 mg/L333%
August 2026Nitrogen, ammonia total [as N], monthly average10.8 lb/d≤ .67 lb/d1512%
August 2026Nitrogen, ammonia total [as N], monthly average13 mg/L≤ 1 mg/L1200%
August 2026Nitrogen, ammonia total [as N], weekly average10.8 lb/d≤ 1.9 lb/d468%
August 2026Nitrogen, ammonia total [as N], weekly average13 mg/L≤ 2.8 mg/L364%
August 2026Solids, total suspended, monthly average10.8 lb/d≤ 8 lb/d35%
August 2026Solids, total suspended, monthly average13 mg/L≤ 12 mg/L8%

Limits in force (43)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly average minimum≥ 5.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec001
Oxygen, dissolved [DO]minimum weekly average≥ 4 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec001
Oxygen, dissolved [DO]minimum weekly average≥ 6 mg/LMar–Jul001
Oxygen, dissolved [DO]daily minimum≥ 3.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec001
Oxygen, dissolved [DO]daily minimum≥ 5 mg/LMar–Jul001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 12 mg/Lall year001
Solids, total suspendeddaily maximum≤ 24 mg/Lall year001
Solids, total suspendedmonthly average≤ 8 lb/dall year001
Solids, total suspendeddaily maximum≤ 16 lb/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LApr, May, Sep, Oct001
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LJun–Aug001
Nitrogen, ammonia total [as N]monthly average≤ 3.4 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LMar001
Nitrogen, ammonia total [as N]daily maximum≤ 3 mg/LApr, May, Sep, Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 3 mg/LJun–Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 5.7 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 5.1 mg/LMar001
Nitrogen, ammonia total [as N]monthly average≤ .67 lb/dApr, May, Sep, Oct001
Nitrogen, ammonia total [as N]monthly average≤ .67 lb/dJun–Aug001
Nitrogen, ammonia total [as N]monthly average≤ 2.3 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 1 lb/dMar001
Nitrogen, ammonia total [as N]daily maximum≤ 2 lb/dApr, May, Sep, Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 2 lb/dJun–Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 3.8 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 3.4 lb/dMar001
Nitrogen, ammonia total [as N]weekly average≤ 2.8 mg/LJun–Aug001
Nitrogen, ammonia total [as N]weekly average≤ 3.8 mg/LMar001
Nitrogen, ammonia total [as N]weekly average≤ 1.9 lb/dJun–Aug001
Nitrogen, ammonia total [as N]weekly average≤ 2.5 lb/dMar001
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≤ .05 mg/Lall year001
Coliform, fecal generaldaily maximumreport only (#/100mL)May–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 20 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 6.7 lb/dall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 13 lb/dall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all yearINF
Solids, total suspendedmonthly averagereport only (mg/L)all yearINF
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearINF
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearINF

How strict are these limits?

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

Same industry: the 76 Real Estate permits in Illinois.

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Your permit document is the final word. As JSON: /api/v1/permits/IL0052825 · MCP: https://passage-data.com/mcp