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Compass Minerals America

Miscellaneous Nonmetallic Minerals, Lyons, Kansas. NPDES permit KS0000264, in force until Jan 31, 2029. Last 12 months: over a limit 8 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (6 values), outfall 003 form A monthly (4 values), outfall 005 form A monthly (5 values), outfall 007 form A monthly (1 value)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 2 of 48 reports late

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

Period endingParameterReportedLimitOver by
January 2026Chloride, EPA's "DPD AVG"1432.29905 lb/d≤ 1179 lb/d21%
February 2026Chloride, EPA's "DPD AVG"1434.13301 lb/d≤ 1179 lb/d22%
March 2026Chloride, EPA's "DPD AVG"1424.95138 lb/d≤ 1179 lb/d21%
April 2026Chloride, EPA's "DPD AVG"1425.98446 lb/d≤ 1179 lb/d21%
May 2026Chloride, EPA's "DPD AVG"1433.34192 lb/d≤ 1179 lb/d22%
June 2026Chloride, EPA's "DPD AVG"1438.78582 lb/d≤ 1179 lb/d22%
July 2026Chloride, EPA's "DPD AVG"1419.31318 lb/d≤ 1179 lb/d20%
August 2026Chloride, EPA's "DPD AVG"1413.93549 lb/d≤ 1179 lb/d20%

Limits in force (19)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Phosphorus, total [as P]daily maximumreport only (mg/L)Feb, Jul001
Chloride [as Cl]monthly averagereport only (mg/L)all year001
Chloride [as Cl]daily maximum≤ 400 mg/Lall year001
Chloride [as Cl]monthly averagereport only (lb/d)all year001
Selenium, total recoverabledaily maximumreport only (ug/L)Feb, Jul001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Chloride [as Cl]monthly averagereport only (mg/L)all year003
Chloride [as Cl]daily maximum≤ 900 mg/Lall year003
Chloride [as Cl]monthly averagereport only (lb/d)all year003
Selenium, total [as Se]monthly averagereport only (ug/L)Feb, Jul003
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year003
Chloride [as Cl]daily maximum≤ 887 mg/Lall year005
Chloride [as Cl]monthly averagereport only (lb/d)all year005
Chloridedaily averagereport only (mg/L)all year005
ChlorideEPA's "DPD AVG"≤ 1179 lb/dall year005
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year005
Chloride [as Cl]monthly averagereport only (mg/L)all year007

How strict are these limits?

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

Same industry: the 66 Mining and Quarrying of Nonmetallic Minerals permits in Kansas.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/KS0000264 · MCP: https://passage-data.com/mcp