Thiele Kaolin Company — NPDES permit GA0002135: limits, due date and EPA's record

NPDES permit GA0002135 · Minor NON-POTW · effective, expires 2030-02-28 · EPA's file as of 2026-09-19

EPA's record, 2025-09-01 to 2026-08-31

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (118)

Outfall	Parameter	Statistic	Limit	Months
001	Turbidity	DAILY AV	<= 50 NTU	all year
001	Turbidity	DAILY MX	<= 75 NTU	all year
001	pH	MINIMUM	>= 6 SU	all year
001	pH	MAXIMUM	<= 8.5 SU	all year
001	Solids, total suspended	DAILY AV	<= 25 mg/L	all year
001	Solids, total suspended	DAILY MX	<= 45 mg/L	all year
001	Oil & Grease	DAILY AV	<= 10 mg/L	all year
001	Oil & Grease	DAILY MX	<= 15 mg/L	all year
001	Nitrogen, total [as N]	DAILY AV	report only	all year
001	Nitrogen, total [as N]	DAILY MX	report only	all year
001	Nitrogen, organic total [as N]	DAILY AV	report only	all year
001	Nitrogen, organic total [as N]	DAILY MX	report only	all year
001	Nitrogen, ammonia total [as N]	DAILY AV	report only	all year
001	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
001	Nitrogen, Kjeldahl, total [as N]	DAILY AV	report only	all year
001	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
001	Nitrite + Nitrate total [as N]	DAILY AV	report only	all year
001	Nitrite + Nitrate total [as N]	DAILY MX	report only	all year
001	Phosphorus, total [as P]	DAILY AV	report only	all year
001	Phosphorus, total [as P]	DAILY MX	report only	all year
001	Cadmium, total [as Cd]	DAILY AV	report only	all year
001	Cadmium, total [as Cd]	DAILY MX	report only	all year
001	Cadmium, total [as Cd]	DAILY AV	report only	all year
001	Cadmium, total [as Cd]	DAILY MX	report only	all year
001	Copper, total [as Cu]	DAILY AV	report only	all year
001	Copper, total [as Cu]	DAILY MX	report only	all year
001	Copper, total [as Cu]	DAILY AV	report only	all year
001	Copper, total [as Cu]	DAILY MX	report only	all year
001	Selenium, total [as Se]	DAILY AV	<= .005 mg/L	all year
001	Selenium, total [as Se]	DAILY MX	<= .0075 mg/L	all year
001	Selenium, total [as Se]	DAILY AV	<= .096 lb/d	all year
001	Selenium, total [as Se]	DAILY MX	<= .144 lb/d	all year
001	Phosphate, ortho [as P]	DAILY AV	report only	all year
001	Phosphate, ortho [as P]	DAILY MX	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY AV	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia	MINIMUM	report only	all year
001	NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas	MINIMUM	report only	all year
002	Turbidity	DAILY AV	report only	all year
002	Turbidity	DAILY MX	report only	all year
002	pH	MINIMUM	>= 6 SU	all year
002	pH	MAXIMUM	<= 8.5 SU	all year
002	Solids, total suspended	DAILY AV	<= 25 mg/L	all year
002	Solids, total suspended	DAILY MX	<= 45 mg/L	all year
002	Oil & Grease	DAILY AV	<= 10 mg/L	all year
002	Oil & Grease	DAILY MX	<= 15 mg/L	all year
002	Nitrogen, total [as N]	DAILY AV	report only	all year
002	Nitrogen, total [as N]	DAILY MX	report only	all year
002	Nitrogen, organic total [as N]	DAILY AV	report only	all year
002	Nitrogen, organic total [as N]	DAILY MX	report only	all year
002	Nitrogen, ammonia total [as N]	DAILY AV	report only	all year
002	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
002	Nitrogen, Kjeldahl, total [as N]	DAILY AV	report only	all year
002	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
002	Nitrite + Nitrate total [as N]	DAILY AV	report only	all year
002	Nitrite + Nitrate total [as N]	DAILY MX	report only	all year
002	Phosphorus, total [as P]	DAILY AV	report only	all year
002	Phosphorus, total [as P]	DAILY MX	report only	all year
002	Cadmium, total [as Cd]	DAILY AV	report only	all year
002	Cadmium, total [as Cd]	DAILY MX	report only	all year
002	Cadmium, total [as Cd]	DAILY AV	report only	all year
002	Cadmium, total [as Cd]	DAILY MX	report only	all year
002	Copper, total [as Cu]	DAILY AV	<= .028 mg/L	all year
002	Copper, total [as Cu]	DAILY MX	<= .042 mg/L	all year
002	Copper, total [as Cu]	DAILY AV	<= .923 lb/d	all year
002	Copper, total [as Cu]	DAILY MX	<= 1.36 lb/d	all year
002	Selenium, total [as Se]	DAILY AV	<= .005 mg/L	all year
002	Selenium, total [as Se]	DAILY MX	<= .0075 mg/L	all year
002	Selenium, total [as Se]	DAILY AV	<= .163 lb/d	all year
002	Selenium, total [as Se]	DAILY MX	<= .245 lb/d	all year
002	Phosphate, ortho [as P]	DAILY AV	report only	all year
002	Phosphate, ortho [as P]	DAILY MX	report only	all year
002	Flow, in conduit or thru treatment plant	DAILY AV	report only	all year
002	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
002	NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia	MINIMUM	report only	all year
002	NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas	MINIMUM	report only	all year
003	Turbidity	DAILY AV	report only	all year
003	Turbidity	DAILY MX	report only	all year
003	pH	MINIMUM	>= 6 SU	all year
003	pH	MAXIMUM	<= 8.5 SU	all year
003	Solids, total suspended	DAILY AV	<= 25 mg/L	all year
003	Solids, total suspended	DAILY MX	<= 45 mg/L	all year
003	Oil & Grease	DAILY AV	<= 10 mg/L	all year
003	Oil & Grease	DAILY MX	<= 15 mg/L	all year
003	Nitrogen, total [as N]	DAILY AV	report only	all year
003	Nitrogen, total [as N]	DAILY MX	report only	all year
003	Nitrogen, organic total [as N]	DAILY AV	report only	all year
003	Nitrogen, organic total [as N]	DAILY MX	report only	all year
003	Nitrogen, ammonia total [as N]	DAILY AV	report only	all year
003	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
003	Nitrogen, Kjeldahl, total [as N]	DAILY AV	report only	all year
003	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
003	Nitrite + Nitrate total [as N]	DAILY AV	report only	all year
003	Nitrite + Nitrate total [as N]	DAILY MX	report only	all year
003	Phosphorus, total [as P]	DAILY AV	report only	all year
003	Phosphorus, total [as P]	DAILY MX	report only	all year
003	Cadmium, total [as Cd]	DAILY AV	report only	all year
003	Cadmium, total [as Cd]	DAILY MX	report only	all year
003	Cadmium, total [as Cd]	DAILY AV	report only	all year
003	Cadmium, total [as Cd]	DAILY MX	report only	all year
003	Copper, total [as Cu]	DAILY AV	<= .01 mg/L	all year
003	Copper, total [as Cu]	DAILY MX	<= .013 mg/L	all year
003	Copper, total [as Cu]	DAILY AV	<= .033 lb/d	all year
003	Copper, total [as Cu]	DAILY MX	<= .044 lb/d	all year
003	Zinc, total [as Zn]	DAILY AV	<= .16 mg/L	all year
003	Zinc, total [as Zn]	DAILY MX	<= .16 mg/L	all year
003	Zinc, total [as Zn]	DAILY AV	<= .53 lb/d	all year
003	Zinc, total [as Zn]	DAILY MX	<= .53 lb/d	all year
003	Selenium, total [as Se]	DAILY AV	<= .005 mg/L	all year
003	Selenium, total [as Se]	DAILY MX	<= .0075 mg/L	all year
003	Selenium, total [as Se]	DAILY AV	<= .017 lb/d	all year
003	Selenium, total [as Se]	DAILY MX	<= .026 lb/d	all year
003	Phosphate, ortho [as P]	DAILY AV	report only	all year
003	Phosphate, ortho [as P]	DAILY MX	report only	all year
003	Flow, in conduit or thru treatment plant	DAILY AV	report only	all year
003	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
003	LC50 Static Renewal 96Hr Acute Ceriodaphnia dubia	MINIMUM	report only	all year
003	LC50 Static Renewal 96Hr Acute Pimephales promelas	MINIMUM	report only	all year