Passage Data · Check a report · Use it from your AI

Martin Marietta

Crushed And Broken Granite, Waite Park, Minnesota. NPDES permit MN0004031, in force until Jul 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 47 days after each period: outfall D001 form A1 monthly (15 values), outfall D001 form A2 monthly (1 value), outfall D004 form A1 yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 25 reports late

Limits in force (17)

ParameterStatisticLimitMonthsOutfall
Turbiditymonthly averagereport only (NTU)all yearD001
Turbiditydaily maximumreport only (NTU)all yearD001
pHinstantaneous minimum≥ 6 SUall yearD001
pHinstantaneous maximum≤ 9 SUall yearD001
Solids, total suspendedmonthly average≤ 30 mg/Lall yearD001
Solids, total suspendeddaily maximum≤ 45 mg/Lall yearD001
Solids, total suspendedmonthly average≤ 199.9 kg/dall yearD001
Solids, total suspendeddaily maximum≤ 998.4 kg/dall yearD001
Nitrogen, total [as N]monthly averagereport only (mg/L)all yearD001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all yearD001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all yearD001
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearD001
Phosphorus, total [as P]year-to-date total≤ 405 kg/yrall yearD001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearD001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearD001
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearD001
Solids, total suspendedannual averagereport only (mg/L)all yearD004

How strict are these limits?

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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MN0004031 · MCP: https://passage-data.com/mcp