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The National Lime & Stone Company

Crushed And Broken Limestone, Stout, Ohio. NPDES permit OH0148865, in force until Oct 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (6 values), outfall 002 form A monthly (6 values), outfall 003 form A monthly (2 values), outfall 004 form A monthly (2 values), outfall 005 form A monthly (2 values), outfall 006 form A monthly (2 values), and 1 more form
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 44 reports late

Limits in force (22)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6.5 SUMar, Jun, Sep, Dec001
pHdaily maximum≤ 9 SUMar, Jun, Sep, Dec001
Solids, total suspendedmonthly average≤ 30 mg/LMar, Jun, Sep, Dec001
Solids, total suspendeddaily maximum≤ 45 mg/LMar, Jun, Sep, Dec001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
pHdaily minimum≥ 6.5 SUMar, Jun, Sep, Dec002
pHdaily maximum≤ 9 SUMar, Jun, Sep, Dec002
Solids, total suspendedmonthly average≤ 30 mg/LMar, Jun, Sep, Dec002
Solids, total suspendeddaily maximum≤ 45 mg/LMar, Jun, Sep, Dec002
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 suspendedmonthly averagereport only (mg/L)Mar, Jun, Sep, Dec003
Solids, total suspendeddaily maximumreport only (mg/L)Mar, Jun, Sep, Dec003
Solids, total suspendedmonthly averagereport only (mg/L)Mar, Jun, Sep, Dec004
Solids, total suspendeddaily maximumreport only (mg/L)Mar, Jun, Sep, Dec004
Solids, total suspendedmonthly averagereport only (mg/L)Mar, Jun, Sep, Dec005
Solids, total suspendeddaily maximumreport only (mg/L)Mar, Jun, Sep, Dec005
Solids, total suspendedmonthly averagereport only (mg/L)Mar, Jun, Sep, Dec006
Solids, total suspendeddaily maximumreport only (mg/L)Mar, Jun, Sep, Dec006
Solids, total suspendedmonthly averagereport only (mg/L)Mar, Jun, Sep, Dec007
Solids, total suspendeddaily maximumreport only (mg/L)Mar, Jun, Sep, Dec007

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.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OH0148865 · MCP: https://passage-data.com/mcp