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Linde Incorporated

Industrial Gases, Baltimore, Maryland. NPDES permit MD0054101, in force until May 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A quarterly (11 values), outfall 002 form A quarterly (2 values)
Renewal application due
Dec 2, 2026 · 180 days before expiry; your permit may set another date
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 8 reports late

Limits in force (13)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall year001
Oxygen, dissolved [DO]daily maximumreport only (mg/L)all year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year001
Copper, dissolved [as Cu]daily maximumreport only (ug/L)all year001
Copper, total [as Cu]daily maximumreport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year001
Chlorine, total residualmonthly average≤ .1 mg/Lall year001
Chlorine, total residualdaily maximum< .1 mg/Lall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002

How strict are these limits?

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

Same industry: the 7 Chemicals and Allied Products permits in Maryland.

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/MD0054101 · MCP: https://passage-data.com/mcp