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Imerys Carbonates, LLC

Crushed And Broken Limestone, major discharger, Talladega County, Alabama. NPDES permit AL0003662 expired Jul 31, 2016; its limits still apply. Last 12 months: over a limit once (last December 2025), 2 of 108 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 002 form 1 quarterly (12 values), outfall 007 form 1 quarterly (12 values), outfall 010 form 1 quarterly (42 values), outfall 010 form Q quarterly (2 values), outfall 011 form 1 quarterly (42 values), outfall 011 form Q quarterly (2 values), and 5 more forms
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 6 of 108 reports late

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

Period endingParameterReportedLimit
December 2025Toxicity [chronic], Ceriodaphnia dubia, daily maximum1≤ 0 pass=0;fail=1

Limits in force (192)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6 SUall year002
pHdaily minimum≥ 6 SUall year002
pHdaily maximum≤ 9 SUall year002
pHdaily maximum≤ 9 SUall year002
Solids, total suspendeddaily average≤ 25 mg/Lall year002
Solids, total suspendeddaily average≤ 25 mg/Lall year002
Solids, total suspendeddaily maximum≤ 45 mg/Lall year002
Solids, total suspendeddaily maximum≤ 45 mg/Lall year002
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
pHdaily minimum≥ 6 SUall year007
pHdaily minimum≥ 6 SUall year007
pHdaily maximum≤ 9 SUall year007
pHdaily maximum≤ 9 SUall year007
Solids, total suspendeddaily average≤ 25 mg/Lall year007
Solids, total suspendeddaily average≤ 25 mg/Lall year007
Solids, total suspendeddaily maximum≤ 45 mg/Lall year007
Solids, total suspendeddaily maximum≤ 45 mg/Lall year007
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year007
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year007
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year007
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year007
pHdaily minimum≥ 6 SUall year010
pHdaily minimum≥ 6 SUall year010
pHdaily maximum≤ 9 SUall year010
pHdaily maximum≤ 9 SUall year010
Solids, total suspendeddaily average≤ 25 mg/Lall year010
Solids, total suspendeddaily average≤ 25 mg/Lall year010
Solids, total suspendeddaily maximum≤ 45 mg/Lall year010
Solids, total suspendeddaily maximum≤ 45 mg/Lall year010
Iron, total [as Fe]daily minimumreport only (mg/L)all year010
Iron, total [as Fe]daily minimumreport only (mg/L)all year010
Iron, total [as Fe]daily averagereport only (mg/L)all year010
Iron, total [as Fe]daily averagereport only (mg/L)all year010
Iron, total [as Fe]daily maximumreport only (mg/L)all year010
Iron, total [as Fe]daily maximumreport only (mg/L)all year010
Manganese, total [as Mn]daily minimumreport only (mg/L)all year010
Manganese, total [as Mn]daily minimumreport only (mg/L)all year010
Manganese, total [as Mn]daily averagereport only (mg/L)all year010
Manganese, total [as Mn]daily averagereport only (mg/L)all year010
Manganese, total [as Mn]daily maximumreport only (mg/L)all year010
Manganese, total [as Mn]daily maximumreport only (mg/L)all year010
Oil and greasedaily minimumreport only (mg/L)all year010
Oil and greasedaily minimumreport only (mg/L)all year010
Oil and greasedaily averagereport only (mg/L)all year010
Oil and greasedaily averagereport only (mg/L)all year010
Oil and greasedaily maximum≤ 15 mg/Lall year010
Oil and greasedaily maximum≤ 15 mg/Lall year010
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year010
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year010
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year010
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year010
Toxicity [chronic], Ceriodaphnia dubiadaily maximum≤ 0 pass=0;fail=1all year010
Toxicity [chronic], Pimephales promelas [Fathead Minnow]daily maximum≤ 0 pass=0;fail=1all year010
Solids, total dissolveddaily minimumreport only (mg/L)all year010
Solids, total dissolveddaily minimumreport only (mg/L)all year010
Solids, total dissolveddaily averagereport only (mg/L)all year010
Solids, total dissolveddaily averagereport only (mg/L)all year010
Solids, total dissolveddaily maximumreport only (mg/L)all year010
Solids, total dissolveddaily maximumreport only (mg/L)all year010
Chemical Oxygen Demand [COD]daily minimumreport only (mg/L)all year010
Chemical Oxygen Demand [COD]daily minimumreport only (mg/L)all year010
Chemical Oxygen Demand [COD]daily averagereport only (mg/L)all year010
Chemical Oxygen Demand [COD]daily averagereport only (mg/L)all year010
Chemical Oxygen Demand [COD]daily maximumreport only (mg/L)all year010
Chemical Oxygen Demand [COD]daily maximumreport only (mg/L)all year010
pHdaily minimum≥ 6 SUall year011
pHdaily minimum≥ 6 SUall year011
pHdaily maximum≤ 9 SUall year011
pHdaily maximum≤ 9 SUall year011
Solids, total suspendeddaily average≤ 25 mg/Lall year011
Solids, total suspendeddaily average≤ 25 mg/Lall year011
Solids, total suspendeddaily maximum≤ 45 mg/Lall year011
Solids, total suspendeddaily maximum≤ 45 mg/Lall year011
Iron, total [as Fe]daily minimumreport only (mg/L)all year011
Iron, total [as Fe]daily minimumreport only (mg/L)all year011
Iron, total [as Fe]daily averagereport only (mg/L)all year011
Iron, total [as Fe]daily averagereport only (mg/L)all year011
Iron, total [as Fe]daily maximumreport only (mg/L)all year011
Iron, total [as Fe]daily maximumreport only (mg/L)all year011
Manganese, total [as Mn]daily minimumreport only (mg/L)all year011
Manganese, total [as Mn]daily minimumreport only (mg/L)all year011
Manganese, total [as Mn]daily averagereport only (mg/L)all year011
Manganese, total [as Mn]daily averagereport only (mg/L)all year011
Manganese, total [as Mn]daily maximumreport only (mg/L)all year011
Manganese, total [as Mn]daily maximumreport only (mg/L)all year011
Oil and greasedaily minimumreport only (mg/L)all year011
Oil and greasedaily minimumreport only (mg/L)all year011
Oil and greasedaily averagereport only (mg/L)all year011
Oil and greasedaily averagereport only (mg/L)all year011
Oil and greasedaily maximum≤ 15 mg/Lall year011
Oil and greasedaily maximum≤ 15 mg/Lall year011
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year011
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year011
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year011
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year011
Toxicity [chronic], Ceriodaphnia dubiadaily maximum≤ 0 pass=0;fail=1all year011
Toxicity [chronic], Pimephales promelas [Fathead Minnow]daily maximum≤ 0 pass=0;fail=1all year011
Solids, total dissolveddaily minimumreport only (mg/L)all year011
Solids, total dissolveddaily minimumreport only (mg/L)all year011
Solids, total dissolveddaily averagereport only (mg/L)all year011
Solids, total dissolveddaily averagereport only (mg/L)all year011
Solids, total dissolveddaily maximumreport only (mg/L)all year011
Solids, total dissolveddaily maximumreport only (mg/L)all year011
Chemical Oxygen Demand [COD]daily minimumreport only (mg/L)all year011
Chemical Oxygen Demand [COD]daily minimumreport only (mg/L)all year011
Chemical Oxygen Demand [COD]daily averagereport only (mg/L)all year011
Chemical Oxygen Demand [COD]daily averagereport only (mg/L)all year011
Chemical Oxygen Demand [COD]daily maximumreport only (mg/L)all year011
Chemical Oxygen Demand [COD]daily maximumreport only (mg/L)all year011
pHdaily minimumreport only (SU)all year012
pHdaily minimumreport only (SU)all year012
pHdaily maximumreport only (SU)all year012
pHdaily maximumreport only (SU)all year012
Solids, total suspendeddaily averagereport only (mg/L)all year012
Solids, total suspendeddaily averagereport only (mg/L)all year012
Solids, total suspendeddaily maximumreport only (mg/L)all year012
Solids, total suspendeddaily maximumreport only (mg/L)all year012
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year012
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year012
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year012
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year012
pHdaily minimum≥ 6 SUall year015
pHdaily minimum≥ 6 SUall year015
pHdaily maximum≤ 9 SUall year015
pHdaily maximum≤ 9 SUall year015
Solids, total suspendeddaily average≤ 25 mg/Lall year015
Solids, total suspendeddaily average≤ 25 mg/Lall year015
Solids, total suspendeddaily maximum≤ 45 mg/Lall year015
Solids, total suspendeddaily maximum≤ 45 mg/Lall year015
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year015
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year015
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year015
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year015
pHdaily minimum≥ 6 SUall year016
pHdaily minimum≥ 6 SUall year016
pHdaily maximum≤ 9 SUall year016
pHdaily maximum≤ 9 SUall year016
Solids, total suspendeddaily average≤ 25 mg/Lall year016
Solids, total suspendeddaily average≤ 25 mg/Lall year016
Solids, total suspendeddaily maximum≤ 45 mg/Lall year016
Solids, total suspendeddaily maximum≤ 45 mg/Lall year016
Iron, total [as Fe]daily minimumreport only (mg/L)all year016
Iron, total [as Fe]daily minimumreport only (mg/L)all year016
Iron, total [as Fe]daily averagereport only (mg/L)all year016
Iron, total [as Fe]daily averagereport only (mg/L)all year016
Iron, total [as Fe]daily maximumreport only (mg/L)all year016
Iron, total [as Fe]daily maximumreport only (mg/L)all year016
Manganese, total [as Mn]daily minimumreport only (mg/L)all year016
Manganese, total [as Mn]daily minimumreport only (mg/L)all year016
Manganese, total [as Mn]daily averagereport only (mg/L)all year016
Manganese, total [as Mn]daily averagereport only (mg/L)all year016
Manganese, total [as Mn]daily maximumreport only (mg/L)all year016
Manganese, total [as Mn]daily maximumreport only (mg/L)all year016
Oil and greasedaily minimumreport only (mg/L)all year016
Oil and greasedaily minimumreport only (mg/L)all year016
Oil and greasedaily averagereport only (mg/L)all year016
Oil and greasedaily averagereport only (mg/L)all year016
Oil and greasedaily maximum≤ 15 mg/Lall year016
Oil and greasedaily maximum≤ 15 mg/Lall year016
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year016
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year016
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year016
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year016
Toxicity [chronic], Ceriodaphnia dubiadaily maximum≤ 0 pass=0;fail=1all year016
Toxicity [chronic], Pimephales promelas [Fathead Minnow]daily maximum≤ 0 pass=0;fail=1all year016
Solids, total dissolveddaily minimumreport only (mg/L)all year016
Solids, total dissolveddaily minimumreport only (mg/L)all year016
Solids, total dissolveddaily averagereport only (mg/L)all year016
Solids, total dissolveddaily averagereport only (mg/L)all year016
Solids, total dissolveddaily maximumreport only (mg/L)all year016
Solids, total dissolveddaily maximumreport only (mg/L)all year016
Chemical Oxygen Demand [COD]daily minimumreport only (mg/L)all year016
Chemical Oxygen Demand [COD]daily minimumreport only (mg/L)all year016
Chemical Oxygen Demand [COD]daily averagereport only (mg/L)all year016
Chemical Oxygen Demand [COD]daily averagereport only (mg/L)all year016
Chemical Oxygen Demand [COD]daily maximumreport only (mg/L)all year016
Chemical Oxygen Demand [COD]daily maximumreport only (mg/L)all year016
pHdaily minimum≥ 6 SUall year021
pHdaily minimum≥ 6 SUall year021
pHdaily maximum≤ 9 SUall year021
pHdaily maximum≤ 9 SUall year021
Solids, total suspendeddaily average≤ 25 mg/Lall year021
Solids, total suspendeddaily average≤ 25 mg/Lall year021
Solids, total suspendeddaily maximum≤ 45 mg/Lall year021
Solids, total suspendeddaily maximum≤ 45 mg/Lall year021
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year021
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year021
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year021
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year021

How strict are these limits?

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

Same industry: the 206 Mining and Quarrying of Nonmetallic Minerals permits in Alabama.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AL0003662 · MCP: https://passage-data.com/mcp