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Byk USA Inc

Clay And Related Minerals, Gonzales, Texas. NPDES permit TX0057274, in force until Aug 6, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (9 values), outfall 003 form A monthly (9 values), outfall 001 form Y yearly, outfall 003 form Y yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 2 of 26 reports late

Limits in force (20)

ParameterStatisticLimitMonthsOutfall
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendeddaily maximum≤ 75 mg/Lall year001
Solids, settleabledaily maximum≤ 10 mL/Lall year001
Chloride [as Cl]daily averagereport only (mg/L)all year001
Chloride [as Cl]daily maximumreport only (mg/L)all year001
Sulfate, total [as SO4]daily averagereport only (mg/L)all year001
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year001
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximum≤ .3 MGDall year001
pHminimum≥ 6 SUall year003
pHmaximum≤ 9 SUall year003
Solids, total suspendeddaily maximum≤ 75 mg/Lall year003
Solids, settleabledaily maximum≤ 10 mL/Lall year003
Chloride [as Cl]daily averagereport only (mg/L)all year003
Chloride [as Cl]daily maximumreport only (mg/L)all year003
Sulfate, total [as SO4]daily average≤ 500 mg/Lall year003
Sulfate, total [as SO4]daily maximum≤ 1060 mg/Lall year003
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year003
Flow, in conduit or thru treatment plantdaily maximum≤ .3 MGDall year003

How strict are these limits?

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

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TX0057274 · MCP: https://passage-data.com/mcp