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Hawkes Company Inc

Miscellaneous Nonmetallic Minerals, Newfolden, Minnesota. NPDES permit MN0062715, in force until May 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 47 days after each period: outfall D003 form A1 monthly (8 values), outfall D006 form A1 monthly (8 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 48 reports late

Limits in force (36)

ParameterStatisticLimitMonthsOutfall
pHmonthly minimum≥ 6.5 SUall yearD003
pHmonthly maximum≤ 8.7 SUall yearD003
Solids, total suspendedmonthly averagereport only (mg/L)Jun, DecD003
Solids, total suspendedmonthly average≤ 30 mg/Lall yearD003
Solids, total suspendedmonthly maximumreport only (mg/L)Jun, DecD003
Solids, total suspendedmonthly maximum≤ 45 mg/Lall yearD003
Solids, total suspendedmonthly maximum≤ 1668 kg/dall yearD003
Nitrogen, total [as N]annual averagereport only (mg/L)DecD003
Nitrogen, Kjeldahl, total [as N]annual averagereport only (mg/L)DecD003
Nitrite + Nitrate total [as N]annual averagereport only (mg/L)DecD003
Phosphorus, total [as P]annual averagereport only (mg/L)DecD003
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearD003
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearD003
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearD003
Mercury, dissolved [as Hg]monthly averagereport only (ng/L)Jun, DecD003
Mercury, dissolved [as Hg]monthly maximumreport only (ng/L)Jun, DecD003
Mercury, total [as Hg]monthly averagereport only (ng/L)Jun, DecD003
Mercury, total [as Hg]monthly maximumreport only (ng/L)Jun, DecD003
pHmonthly minimum≥ 6.5 SUall yearD006
pHmonthly maximum≤ 8.7 SUall yearD006
Solids, total suspendedmonthly averagereport only (mg/L)Jun, DecD006
Solids, total suspendedmonthly average≤ 30 mg/Lall yearD006
Solids, total suspendedmonthly maximumreport only (mg/L)Jun, DecD006
Solids, total suspendedmonthly maximum≤ 45 mg/Lall yearD006
Solids, total suspendedmonthly maximum≤ 1668 kg/dall yearD006
Nitrogen, total [as N]annual averagereport only (mg/L)DecD006
Nitrogen, Kjeldahl, total [as N]annual averagereport only (mg/L)DecD006
Nitrite + Nitrate total [as N]annual averagereport only (mg/L)DecD006
Phosphorus, total [as P]annual averagereport only (mg/L)DecD006
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearD006
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearD006
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearD006
Mercury, dissolved [as Hg]monthly averagereport only (ng/L)Jun, DecD006
Mercury, dissolved [as Hg]monthly maximumreport only (ng/L)Jun, DecD006
Mercury, total [as Hg]monthly averagereport only (ng/L)Jun, DecD006
Mercury, total [as Hg]monthly maximumreport only (ng/L)Jun, DecD006

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MN0062715 · MCP: https://passage-data.com/mcp