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Green Circle Growers Inc

Ornamental Nursery Products, Oberlin, Ohio. NPDES permit OH0136701 expired Oct 31, 2025; its limits still apply. Last 12 months: over a limit 8 times (last August 2026), 2 of 34 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 601 form A monthly (2 values), outfall 602 form A monthly (2 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 36 reports late

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

Period endingOutfallParameterReportedLimitOver by
August 2026601E. coli, MTEC-MF, monthly geometric mean456.9≤ 126 MPN/100mL263%
August 2026601E. coli, MTEC-MF, weekly geometric mean456.9≤ 284 MPN/100mL61%
August 2026601Nitrogen, ammonia total [as N], monthly average.0612≤ .03 kg/d104%
August 2026601Nitrogen, ammonia total [as N], monthly average8.74≤ 1 mg/L774%
August 2026601Nitrogen, ammonia total [as N], weekly maximum.0612≤ .046 kg/d33%
August 2026601Nitrogen, ammonia total [as N], weekly maximum8.74≤ 1.5 mg/L483%
August 2026602E. coli, MTEC-MF, monthly geometric mean866.4≤ 126 MPN/100mL588%
August 2026602E. coli, MTEC-MF, weekly geometric mean866.4≤ 284 MPN/100mL205%

Limits in force (71)

ParameterStatisticLimitMonthsOutfall
Flow ratemonthly averagereport only (gal/d)all year001
Flow ratedaily maximumreport only (gal/d)all year001
Oxygen, dissolved [DO]daily minimumreport only (mg/L)all year001
Oxygen demand, chem. [low level] [COD]monthly averagereport only (mg/L)all year001
Oxygen demand, chem. [low level] [COD]daily maximumreport only (mg/L)all year001
pHdaily minimumreport only (SU)all year001
pHdaily maximumreport only (SU)all year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, nitrate total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Rainfallmonthly averagereport only (in)all year001
Rainfalldaily maximumreport only (in)all year001
Solids, total dissolved- 180 deg. Cmonthly averagereport only (mg/L)all year001
Solids, total dissolved- 180 deg. Cdaily maximumreport only (mg/L)all year001
Sludge waste from secondary clarifiersmonthly averagereport only (gal)Dec588
Sludge waste from secondary clarifiersdaily maximumreport only (gal)Dec588
Flow ratemonthly averagereport only (gal/d)all year601
Flow ratedaily maximumreport only (gal/d)all year601
Oxygen, dissolved [DO]daily minimum≥ 6 mg/LMar, Jun, Aug, Dec601
pHdaily minimum≥ 6.5 SUMar, Jun, Aug, Dec601
pHdaily maximum≤ 9 SUMar, Jun, Aug, Dec601
Solids, total suspendedmonthly average≤ 12 mg/LMar, Jun, Aug, Dec601
Solids, total suspendedweekly maximum≤ 18 mg/LMar, Jun, Aug, Dec601
Solids, total suspendedmonthly average≤ .36 kg/dMar, Jun, Aug, Dec601
Solids, total suspendedweekly maximum≤ .55 kg/dMar, Jun, Aug, Dec601
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LJun, Aug601
Nitrogen, ammonia total [as N]monthly average≤ 3 mg/LMar, Dec601
Nitrogen, ammonia total [as N]weekly maximum≤ 1.5 mg/LJun, Aug601
Nitrogen, ammonia total [as N]weekly maximum≤ 4.5 mg/LMar, Dec601
Nitrogen, ammonia total [as N]monthly average≤ .03 kg/dJun, Aug601
Nitrogen, ammonia total [as N]monthly average≤ .091 kg/dMar, Dec601
Nitrogen, ammonia total [as N]weekly maximum≤ .046 kg/dJun, Aug601
Nitrogen, ammonia total [as N]weekly maximum≤ .14 kg/dMar, Dec601
Turbidity [severity]monthly averagereport only (severity)all year601
Turbidity [severity]daily maximumreport only (severity)all year601
E. coli, MTEC-MFmonthly geometric mean≤ 126 MPN/100mLJun, Aug601
E. coli, MTEC-MFweekly geometric mean≤ 284 MPN/100mLJun, Aug601
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMar, Jun, Aug, Dec601
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 15 mg/LMar, Jun, Aug, Dec601
BOD, carbonaceous [5 day, 20 C]monthly average≤ .3 kg/dMar, Jun, Aug, Dec601
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ .46 kg/dMar, Jun, Aug, Dec601
Flow ratemonthly averagereport only (gal/d)all year602
Flow ratedaily maximumreport only (gal/d)all year602
Oxygen, dissolved [DO]daily minimum≥ 6 mg/LMar, Jun, Aug, Dec602
pHdaily minimum≥ 6.5 SUMar, Jun, Aug, Dec602
pHdaily maximum≤ 9 SUMar, Jun, Aug, Dec602
Solids, total suspendedmonthly average≤ 12 mg/LMar, Jun, Aug, Dec602
Solids, total suspendedweekly maximum≤ 18 mg/LMar, Jun, Aug, Dec602
Solids, total suspendedmonthly average≤ .23 kg/dMar, Jun, Aug, Dec602
Solids, total suspendedweekly maximum≤ .34 kg/dMar, Jun, Aug, Dec602
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LJun, Aug602
Nitrogen, ammonia total [as N]monthly average≤ 3 mg/LMar, Dec602
Nitrogen, ammonia total [as N]weekly maximum≤ 1.5 mg/LJun, Aug602
Nitrogen, ammonia total [as N]weekly maximum≤ 4.5 mg/LMar, Dec602
Nitrogen, ammonia total [as N]monthly average≤ .019 kg/dJun, Aug602
Nitrogen, ammonia total [as N]monthly average≤ .057 kg/dMar, Dec602
Nitrogen, ammonia total [as N]weekly maximum≤ .028 kg/dJun, Aug602
Nitrogen, ammonia total [as N]weekly maximum≤ .085 kg/dMar, Dec602
Turbidity [severity]monthly averagereport only (severity)all year602
Turbidity [severity]daily maximumreport only (severity)all year602
E. coli, MTEC-MFmonthly geometric mean≤ 126 MPN/100mLJun, Aug602
E. coli, MTEC-MFweekly geometric mean≤ 284 MPN/100mLJun, Aug602
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMar, Jun, Aug, Dec602
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 15 mg/LMar, Jun, Aug, Dec602
BOD, carbonaceous [5 day, 20 C]monthly average≤ .19 kg/dMar, Jun, Aug, Dec602
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ .28 kg/dMar, Jun, Aug, Dec602

How strict are these limits?

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

Same industry: the 4 Agricultural Production — Crops permits in Ohio.

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Your permit document is the final word. As JSON: /api/v1/permits/OH0136701 · MCP: https://passage-data.com/mcp