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Amrize Midwest Inc

Construction Sand And Gravel, Glyndon, Minnesota. NPDES permit MN0069515, in force until Mar 31, 2028. Last 12 months: over a limit once (last November 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 47 days after each period: form A1 monthly (8 values)
Renewal application due
Oct 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 14 reports late

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

Period endingParameterReportedLimit
November 2025pH, instantaneous minimum5.7≥ 6 SU

Limits in force (11)

ParameterStatisticLimitMonths
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]quarterly averagereport only (mg/L)Mar, Jun, Sep, Dec
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all year
Solids, total dissolvedmonthly averagereport only (mg/L)Mar, Sep

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

Same industry: the 13 Mining and Quarrying of Nonmetallic Minerals permits in Minnesota.

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/MN0069515 · MCP: https://passage-data.com/mcp