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Subtropolis Mining Co

Crushed And Broken Limestone, Petersburg, Ohio. NPDES permit OH0129895 expired Mar 31, 2026; its limits still apply. Last 12 months: over a limit 5 times (last February 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (10 values), outfall 002 form A monthly (8 values), outfall 003 form A monthly (8 values), outfall 004 form A monthly (8 values), outfall 006 form A monthly (4 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
4 values over a limit, 0 required values missing, 5 of 52 reports late

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

Period endingOutfallParameterReportedLimitOver by
December 2025002Solids, total suspended, daily maximum48≤ 45 mg/L7%
January 2026002Solids, total suspended, daily maximum280≤ 45 mg/L522%
January 2026002Solids, total suspended, monthly average75≤ 30 mg/L150%
February 2026001pH, daily minimum5.85≥ 6.5 SU—
February 2026002pH, daily minimum5.26≥ 6.5 SU—

Limits in force (38)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendeddaily maximum≤ 45 mg/Lall year001
Rainfallmonthly averagereport only (in)all year001
Rainfalldaily maximumreport only (in)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Solids, total dissolved- 180 deg. Cmonthly averagereport only (mg/L)Mar, Jun, Sep, Dec001
Solids, total dissolved- 180 deg. Cdaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
pHdaily minimum≥ 6.5 SUall year002
pHdaily maximum≤ 9 SUall year002
Solids, total suspendedmonthly average≤ 30 mg/Lall year002
Solids, total suspendeddaily maximum≤ 45 mg/Lall year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Solids, total dissolved- 180 deg. Cmonthly averagereport only (mg/L)Mar, Jun, Sep, Dec002
Solids, total dissolved- 180 deg. Cdaily maximumreport only (mg/L)Mar, Jun, Sep, Dec002
pHdaily minimum≥ 6.5 SUall year003
pHdaily maximum≤ 9 SUall year003
Solids, total suspendedmonthly average≤ 30 mg/Lall year003
Solids, total suspendeddaily maximum≤ 45 mg/Lall year003
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003
Solids, total dissolved- 180 deg. Cmonthly averagereport only (mg/L)Mar, Jun, Sep, Dec003
Solids, total dissolved- 180 deg. Cdaily maximumreport only (mg/L)Mar, Jun, Sep, Dec003
pHdaily minimum≥ 6.5 SUall year004
pHdaily maximum≤ 9 SUall year004
Solids, total suspendedmonthly average≤ 30 mg/Lall year004
Solids, total suspendeddaily maximum≤ 45 mg/Lall year004
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
Solids, total dissolved- 180 deg. Cmonthly averagereport only (mg/L)Mar, Jun, Sep, Dec004
Solids, total dissolved- 180 deg. Cdaily maximumreport only (mg/L)Mar, Jun, Sep, Dec004
pHdaily minimum≥ 6.5 SUMar, Jun, Sep, Dec006
pHdaily maximum≤ 9 SUMar, Jun, Sep, Dec006
Solids, total suspendedmonthly averagereport only (mg/L)Mar, Jun, Sep, Dec006
Solids, total suspendeddaily maximumreport only (mg/L)Mar, Jun, Sep, Dec006

How strict are these limits?

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

Same industry: the 131 Mining and Quarrying of Nonmetallic Minerals 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/OH0129895 · MCP: https://passage-data.com/mcp