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Imerys Kaolin Inc.

Kaolin And Ball Clay, Dry Branch, Georgia. NPDES permit GA0030848, in force until Apr 30, 2027. Last 12 months: no values over a limit, 126 required values missing, 6 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form 1 monthly (42 values)
Renewal application due
Nov 1, 2026 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (42)

ParameterStatisticLimitMonths
Turbiditydaily average≤ 50 NTUall year
Turbiditydaily maximum≤ 75 NTUall year
pHminimum≥ 6 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendeddaily average≤ 22 mg/Lall year
Solids, total suspendeddaily maximum≤ 33 mg/Lall year
Oil & Greasedaily average≤ 10 mg/Lall year
Oil & Greasedaily maximum≤ 15 mg/Lall year
Nitrogen, total [as N]daily averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, organic total [as N]daily averagereport only (mg/L)all year
Nitrogen, organic total [as N]daily maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]daily averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]daily averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Nitrite + Nitrate total [as N]daily averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all 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 average≤ .0009 mg/Lall year
Cadmium, total [as Cd]daily maximum≤ .0014 mg/Lall year
Cadmium, total [as Cd]daily average≤ .01 lb/dall year
Cadmium, total [as Cd]daily maximum≤ .017 lb/dall year
Copper, total [as Cu]daily averagereport only (mg/L)all year
Copper, total [as Cu]daily maximumreport only (mg/L)all year
Copper, total [as Cu]daily averagereport only (lb/d)all year
Copper, total [as Cu]daily maximumreport only (lb/d)all year
Zinc, total [as Zn]daily average≤ .089 mg/Lall year
Zinc, total [as Zn]daily maximum≤ .091 mg/Lall year
Zinc, total [as Zn]daily average≤ 1.07 lb/dall year
Zinc, total [as Zn]daily maximum≤ 1.1 lb/dall year
Selenium, total [as Se]daily average≤ .005 mg/Lall year
Selenium, total [as Se]daily maximum≤ .008 mg/Lall year
Selenium, total [as Se]daily average≤ .038 lb/dall year
Selenium, total [as Se]daily maximum≤ .056 lb/dall year
Phosphate, ortho [as P]daily averagereport only (mg/L)all year
Phosphate, ortho [as P]daily maximumreport only (mg/L)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
LC50 Static 96Hr Acute Ceriodaphniaminimum≥ 100 %all year
LC50 Static 96Hr Acute Pimephalesminimum≥ 100 %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.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/GA0030848 · MCP: https://passage-data.com/mcp