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Cardinal FG Company

Flat Glass, Church Hill, Tennessee. NPDES permit TN0002631, in force until Sep 30, 2029. Last 12 months: over a limit 2 times (last October 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 002 form G monthly (13 values), outfall 004 form G monthly (10 values), outfall 005 form G monthly (8 values), outfall 01A form G monthly (10 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
5 values over a limit, 0 required values missing, 0 of 48 reports late

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

Period endingParameterReportedLimitOver by
October 2025Chlorine, total residual, daily maximum.08 mg/L≤ .019 mg/L321%
October 2025Chlorine, total residual, monthly average.04 mg/L≤ .011 mg/L264%

Limits in force (41)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]minimum≥ 2 mg/Lall year002
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year002
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year002
pHdaily minimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
Solids, total suspendedmonthly average≤ 30 mg/Lall year002
Solids, total suspendeddaily maximum≤ 45 mg/Lall year002
Solids, settleabledaily maximum≤ .5 mL/Lall year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Chlorine, total residualdaily maximum≤ .5 mg/Lall year002
E. colimonthly geometric mean≤ 126 #/100mLall year002
E. colidaily maximum≤ 410 #/100mLall year002
Temperature, water deg. centigradedaily maximumreport only (deg C)all year004
pHdaily minimum≥ 6 SUall year004
pHmaximum≤ 9 SUall year004
Solids, total suspendeddaily maximumreport only (mg/L)all year004
Solids, settleabledaily maximum≤ .5 mL/Lall year004
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
Chlorine, total residualmonthly average≤ .011 mg/Lall year004
Chlorine, total residualdaily maximum≤ .019 mg/Lall year004
Oil and grease visualvaluereport only (N=0;Y=1)all year004
pHminimum≥ 6 SUall year005
pHmaximum≤ 9 SUall year005
Solids, total suspendedmonthly average≤ 9.7 lb/dall year005
Solids, total suspendeddaily maximum≤ 9.7 lb/dall year005
Oil and greasemonthly average≤ 19.4 lb/dall year005
Oil and greasedaily maximum≤ 19.4 lb/dall year005
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year005
pHdaily minimum≥ 6 SUall year01A
pHmaximum≤ 9 SUall year01A
Solids, total suspendedmonthly average≤ 33.48 lb/dall year01A
Solids, total suspendeddaily maximum≤ 50.45 lb/dall year01A
Phosphorus, total [as P]monthly average≤ .13 lb/dall year01A
Phosphorus, total [as P]daily maximum≤ .13 lb/dall year01A
Oil and greasemonthly average≤ 18.35 lb/dall year01A
Oil and greasedaily maximum≤ 18.35 lb/dall year01A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year01A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year01A

How strict are these limits?

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

Same industry: the 7 Stone, Clay, Glass and Concrete Products permits in Tennessee.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TN0002631 · MCP: https://passage-data.com/mcp