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Bison Asset Management, LLC

Mobile Home Site Operators, Dayton, Ohio. NPDES permit OH0112607 expired Jan 31, 2026; its limits still apply. Last 12 months: over a limit 24 times (last August 2026), 4 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (23 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
6 values over a limit, 96 required values missing, 5 of 13 reports late

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

All 24 values over a limit
Period endingParameterReportedLimitOver by
November 2025Nitrogen, ammonia total [as N], monthly average6.73≤ 3 mg/L124%
November 2025Nitrogen, ammonia total [as N], weekly maximum6.73≤ 4.5 mg/L50%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average1.225≤ .88 kg/d39%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average23.12≤ 10 mg/L131%
March 2026BOD, carbonaceous [5 day, 20 C], weekly maximum23.12≤ 15 mg/L54%
March 2026Nitrogen, ammonia total [as N], monthly average.308≤ .27 kg/d14%
March 2026Nitrogen, ammonia total [as N], monthly average5.82≤ 3 mg/L94%
March 2026Nitrogen, ammonia total [as N], weekly maximum5.82≤ 4.5 mg/L29%
March 2026Solids, total suspended, monthly average14.5≤ 12 mg/L21%
May 2026E. coli, MTEC-MF, monthly geometric meanT≤ 126 MPN/100mL—
May 2026E. coli, MTEC-MF, weekly geometric meanT≤ 284 MPN/100mL—
June 2026E. coli, MTEC-MF, monthly geometric mean866≤ 126 MPN/100mL587%
June 2026E. coli, MTEC-MF, weekly geometric mean866≤ 284 MPN/100mL205%
July 2026BOD, carbonaceous [5 day, 20 C], monthly average1.15≤ .88 kg/d31%
July 2026E. coli, MTEC-MF, monthly geometric meanT≤ 126 MPN/100mL—
July 2026E. coli, MTEC-MF, weekly geometric meanT≤ 284 MPN/100mL—
July 2026Nitrogen, ammonia total [as N], monthly average.259≤ .18 kg/d44%
July 2026Nitrogen, ammonia total [as N], monthly average2.21≤ 2 mg/L11%
July 2026Solids, total suspended, monthly average1.45≤ 1.1 kg/d32%
July 2026Solids, total suspended, monthly average12.4≤ 12 mg/L3%
August 2026BOD, carbonaceous [5 day, 20 C], monthly average1.64≤ .88 kg/d86%
August 2026BOD, carbonaceous [5 day, 20 C], weekly maximum1.64≤ 1.33 kg/d23%
August 2026Solids, total suspended, monthly average2≤ 1.1 kg/d82%
August 2026Solids, total suspended, weekly maximum2≤ 1.6 kg/d25%

Limits in force (35)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly averagereport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
Oxygen, dissolved [DO]daily minimum≥ 5 mg/Lall year001
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 12 mg/Lall year001
Solids, total suspendedweekly maximum≤ 18 mg/Lall year001
Solids, total suspendedmonthly average≤ 1.1 kg/dall year001
Solids, total suspendedweekly maximum≤ 1.6 kg/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 3 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ 3 mg/LMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ 4.5 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .18 kg/dMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ .27 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ .27 kg/dMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ .4 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec001
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec001
Phosphorus, total [as P]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec001
Phosphorus, total [as P]daily maximumreport only (mg/L)Mar, Jun, Aug, 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/100mLMay–Oct001
E. coli, MTEC-MFweekly geometric mean≤ 284 MPN/100mLMay–Oct001
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/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 15 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ .88 kg/dall year001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 1.33 kg/dall year001
Sludge weight, drymonthly averagereport only (dry ton)Dec588
Sludge weight, drydaily maximumreport only (dry ton)Dec588

How strict are these limits?

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

Same industry: the 193 Real Estate 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/OH0112607 · MCP: https://passage-data.com/mcp