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Covia Clay LLC

Kaolin And Ball Clay, Hephzibah, Georgia. NPDES permit GA0002470, in force until Feb 29, 2028. Last 12 months: over a limit 2 times (last March 2026), 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form 0 monthly (24 values)
Renewal application due
Sep 2, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
6 values over a limit, 0 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
March 2026Solids, total suspended, daily average18.1 mg/L≤ 16 mg/L13%
March 2026Solids, total suspended, daily maximum29.1 mg/L≤ 24 mg/L21%

Limits in force (24)

ParameterStatisticLimitMonths
Turbiditydaily average≤ 50 NTUall year
Turbiditydaily maximum≤ 75 NTUall year
pHminimum≥ 6 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendeddaily average≤ 16 mg/Lall year
Solids, total suspendeddaily maximum≤ 24 mg/Lall year
Oil & Greasedaily average≤ 10 mg/Lall year
Oil & Greasedaily maximum≤ 15 mg/Lall year
Phosphorus, total [as P]daily averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Cadmium, total [as Cd]daily averagereport only (mg/L)all year
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year
Copper, total [as Cu]daily averagereport only (mg/L)all year
Copper, total [as Cu]daily maximumreport only (mg/L)all year
Zinc, total [as Zn]daily averagereport only (mg/L)all year
Zinc, total [as Zn]daily maximumreport only (mg/L)all year
Selenium, total [as Se]daily averagereport only (mg/L)all year
Selenium, total [as Se]daily maximumreport only (mg/L)all year
Rainfallminimumreport only (in)all year
Rainfallmaximumreport only (in)all year
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Phosphorus, orthodaily averagereport only (mg/L)all year
Phosphorus, orthodaily maximumreport only (mg/L)all year

How strict are these limits?

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

Same industry: the 55 Mining and Quarrying of Nonmetallic Minerals permits in Georgia.

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/GA0002470 · MCP: https://passage-data.com/mcp