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Site One Landscaping Supply

Retail Nurseries And Garden Stores, Richfield, Ohio. NPDES permit OH0149543, in force until Feb 28, 2030. Last 12 months: over a limit 2 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (4 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
4 values over a limit, 0 required values missing, 2 of 13 reports late

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

Period endingParameterReportedLimitOver by
June 2026Nitrogen, ammonia total [as N], monthly average3.25≤ 1 mg/L225%
June 2026Nitrogen, ammonia total [as N], weekly maximum3.25≤ 1.5 mg/L117%

Limits in force (27)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 6 mg/LMar, Jun, Aug, Dec001
pHdaily minimum≥ 6.5 SUMar, Jun, Aug, Dec001
pHdaily maximum≤ 9 SUMar, Jun, Aug, Dec001
Solids, total suspendedmonthly average≤ 12 mg/LMar, Jun, Aug, Dec001
Solids, total suspendedweekly maximum≤ 18 mg/LMar, Jun, Aug, Dec001
Solids, total suspendedmonthly average≤ .0228 kg/dMar, Jun, Aug, Dec001
Solids, total suspendedweekly maximum≤ .0341 kg/dMar, Jun, Aug, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LJun, Aug001
Nitrogen, ammonia total [as N]monthly average≤ 3 mg/LMar, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ 1.5 mg/LJun, Aug001
Nitrogen, ammonia total [as N]weekly maximum≤ 4.5 mg/LMar, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .0019 kg/dJun, Aug001
Nitrogen, ammonia total [as N]monthly average≤ .00568 kg/dMar, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ .00284 kg/dJun, Aug001
Nitrogen, ammonia total [as N]weekly maximum≤ .00852 kg/dMar, Dec001
Turbidity [severity]monthly averagereport only (severity)all year001
Turbidity [severity]daily maximumreport only (severity)all year001
E. coli, MTEC-MFmonthly geometric mean≤ 126 MPN/100mLJun, Aug001
E. coli, MTEC-MFweekly geometric mean≤ 284 MPN/100mLJun, Aug001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMar, Jun, Aug, Dec001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 15 mg/LMar, Jun, Aug, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ .019 kg/dMar, Jun, Aug, Dec001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ .0284 kg/dMar, Jun, Aug, Dec001
Sludge waste from secondary clarifiersmonthly averagereport only (gal)Dec588
Sludge waste from secondary clarifiersdaily maximumreport only (gal)Dec588

How strict are these limits?

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

Same industry: the 3 Building Materials and Garden Supplies Retail permits in Ohio.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OH0149543 · MCP: https://passage-data.com/mcp