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Compass Minerals Corporation

Chemical Preparations, Ogden, Utah. NPDES permit UT0000647 expired Oct 4, 2026; its limits still apply. Last 12 months: over a limit 4 times (last May 2026), 29 of 124 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (8 values), outfall 001 form B monthly (15 values), outfall 001 form P quarterly (10 values), outfall 002 form A monthly (6 values), outfall 003 form A monthly (6 values), outfall 004 form A monthly (6 values), and 5 more forms
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 6 required values missing, 13 of 124 reports late

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

Period endingParameterReportedLimitOver by
April 2026BOD, 5-day, maximum monthly average< 213 mg/L≤ 25 mg/L752%
April 2026BOD, 5-day, maximum 7-day average< 213 mg/L≤ 35 mg/L509%
May 2026Solids, total suspended, daily maximum226 mg/L≤ 35 mg/L546%
May 2026Solids, total suspended, maximum monthly average226 mg/L≤ 25 mg/L804%

Limits in force (81)

ParameterStatisticLimitMonthsOutfall
Flow rate30-day averagereport only (MGD)all year001
Flow rate30-day averagereport only (MGD)all year001
Flow ratedaily maximumreport only (MGD)all year001
Flow ratedaily maximumreport only (MGD)all year001
Oxygen, dissolved [DO]daily minimum≥ 4.5 mg/Lall year001
BOD, 5-daymaximum monthly average≤ 25 mg/Lall year001
BOD, 5-daymaximum 7-day average≤ 35 mg/Lall year001
pHminimum≥ 6.5 SUall year001
pHdaily minimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmaximum monthly average≤ 25 mg/Lall year001
Solids, total suspendeddaily maximum≤ 35 mg/Lall year001
Oil & Greasedaily maximum≤ 10 mg/Lall year001
Cyanide, total [as CN]maximum monthly averagereport only (mg/L)all year001
Arsenic, total [as As]maximum monthly averagereport only (mg/L)all year001
Cadmium, total [as Cd]maximum monthly averagereport only (mg/L)all year001
Chromium, total [as Cr]maximum monthly average≤ .2 mg/Lall year001
Chromium, total [as Cr]maximum monthly averagereport only (mg/L)all year001
Chromium, total [as Cr]daily maximum≤ .2 mg/Lall year001
Copper, total [as Cu]maximum monthly averagereport only (mg/L)all year001
Lead, total [as Pb]maximum monthly averagereport only (mg/L)all year001
Nickel, total [as Ni]maximum monthly averagereport only (mg/L)all year001
Silver, total [as Ag]maximum monthly averagereport only (mg/L)all year001
Zinc, total [as Zn]maximum monthly average≤ 1 mg/Lall year001
Zinc, total [as Zn]maximum monthly averagereport only (mg/L)all year001
Zinc, total [as Zn]daily maximum≤ 1 mg/Lall year001
Oil and greasedaily maximum≤ 10 mg/Lall year001
Chlorine, total residualmaximum monthly average≤ .2 mg/Lall year001
Chlorine, total residualdaily maximum≤ .5 mg/Lall year001
Mercury, total [as Hg]maximum monthly averagereport only (mg/L)all year001
Oil and grease visualdaily maximumreport only (N=0;Y=1)all year001
Oil and grease visualmonthly averagereport only (N=0;Y=1)all year001
Flow rate30-day averagereport only (MGD)all year002
Flow ratedaily maximumreport only (MGD)all year002
pHminimum≥ 6.5 SUall year002
pHmaximum≤ 9 SUall year002
Oil & Greasedaily maximum≤ 10 mg/Lall year002
Oil and grease visualdaily maximumreport only (N=0;Y=1)all year002
Flow rate30-day averagereport only (MGD)all year003
Flow ratedaily maximumreport only (MGD)all year003
pHminimum≥ 6.5 SUall year003
pHmaximum≤ 9 SUall year003
Oil & Greasedaily maximum≤ 10 mg/Lall year003
Oil and grease visualdaily maximumreport only (N=0;Y=1)all year003
Flow rate30-day averagereport only (MGD)all year004
Flow ratedaily maximumreport only (MGD)all year004
pHminimum≥ 6.5 SUall year004
pHmaximum≤ 9 SUall year004
Oil & Greasedaily maximum≤ 10 mg/Lall year004
Oil and grease visualdaily maximumreport only (N=0;Y=1)all year004
Flow rate30-day averagereport only (MGD)all year005
Flow ratedaily maximumreport only (MGD)all year005
pHminimum≥ 6.5 SUall year005
pHmaximum≤ 9 SUall year005
Oil & Greasedaily maximum≤ 10 mg/Lall year005
Oil and grease visualdaily maximumreport only (N=0;Y=1)all year005
Flow rate30-day averagereport only (MGD)all year006
Flow ratedaily maximumreport only (MGD)all year006
pHminimum≥ 6.5 SUall year006
pHmaximum≤ 9 SUall year006
Oil & Greasedaily maximum≤ 10 mg/Lall year006
Oil and grease visualdaily maximumreport only (N=0;Y=1)all year006
Flow rate30-day averagereport only (MGD)all year007
Flow ratedaily maximumreport only (MGD)all year007
pHminimum≥ 6.5 SUall year007
pHmaximum≤ 9 SUall year007
Oil & Greasedaily maximum≤ 10 mg/Lall year007
Oil and grease visualdaily maximumreport only (N=0;Y=1)all year007
Flow rate30-day averagereport only (MGD)all year008
Flow ratedaily maximumreport only (MGD)all year008
pHminimum≥ 6.5 SUall year008
pHmaximum≤ 9 SUall year008
Oil & Greasedaily maximum≤ 10 mg/Lall year008
Oil and grease visualdaily maximumreport only (N=0;Y=1)all year008
Flow rate30-day averagereport only (MGD)all year009
Flow ratedaily maximumreport only (MGD)all year009
pHminimum≥ 6.5 SUall year009
pHmaximum≤ 9 SUall year009
Oil & Greasedaily maximum≤ 10 mg/Lall year009
Oil and grease visualdaily maximumreport only (N=0;Y=1)all year009

How strict are these limits?

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

Same industry: the 7 Chemicals and Allied Products permits in Utah.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/UT0000647 · MCP: https://passage-data.com/mcp