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Lockheed Martin Corporation

Nonclassifiable Establishments, Middle River, Maryland. NPDES permit MD0071773, in force until Oct 31, 2027. Last 12 months: over a limit once (last October 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly
Renewal application due
May 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
4 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025Cadmium, total [as Cd], maximum monthly average1.15 ug/L≤ .72 ug/L60%

Limits in force (64)

ParameterStatisticLimitMonths
pHminimum≥ 6 SUall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
pHmaximum≤ 9 SUall year
Cadmium, dissolved [as Cd]monthly averagereport only (ug/L)all year
Cadmium, dissolved [as Cd]monthly averagereport only (ug/L)all year
Cadmium, dissolved [as Cd]daily maximumreport only (ug/L)all year
Cadmium, dissolved [as Cd]daily maximumreport only (ug/L)all year
Cadmium, total [as Cd]maximum monthly average≤ 5 ug/Lall year
Cadmium, total [as Cd]maximum monthly average≤ 5 ug/Lall year
Cadmium, total [as Cd]daily maximum≤ 12.5 ug/Lall year
Cadmium, total [as Cd]daily maximum≤ 12.5 ug/Lall year
Copper, total [as Cu]maximum monthly average≤ 9 ug/Lall year
Copper, total [as Cu]maximum monthly average≤ 9 ug/Lall year
Copper, total [as Cu]daily maximum≤ 13 ug/Lall year
Copper, total [as Cu]daily maximum≤ 13 ug/Lall year
Lead, total [as Pb]maximum monthly average≤ 2.5 ug/Lall year
Lead, total [as Pb]maximum monthly average≤ 2.5 ug/Lall year
Lead, total [as Pb]daily maximum≤ 65 ug/Lall year
Lead, total [as Pb]daily maximum≤ 65 ug/Lall year
Nickel, total [as Ni]maximum monthly average≤ 52 ug/Lall year
Nickel, total [as Ni]maximum monthly average≤ 52 ug/Lall year
Nickel, total [as Ni]daily maximum≤ 470 ug/Lall year
Nickel, total [as Ni]daily maximum≤ 470 ug/Lall year
Zinc, total [as Zn]maximum monthly average≤ 120 ug/Lall year
Zinc, total [as Zn]maximum monthly average≤ 120 ug/Lall year
Zinc, total [as Zn]daily maximum≤ 120 ug/Lall year
Zinc, total [as Zn]daily maximum≤ 120 ug/Lall year
Selenium, total [as Se]maximum monthly average≤ 5 ug/Lall year
Selenium, total [as Se]maximum monthly average≤ 5 ug/Lall year
Selenium, total [as Se]daily maximum≤ 20 ug/Lall year
Selenium, total [as Se]daily maximum≤ 20 ug/Lall year
Vinyl chloridemaximum monthly average≤ .7 ug/Lall year
Vinyl chloridemaximum monthly average≤ .7 ug/Lall year
Vinyl chloridedaily maximumreport only (ug/L)all year
Vinyl chloridedaily maximumreport only (ug/L)all year
Volatile Organic Compound [VOC]monthly averagereport only (ug/L)all year
Volatile Organic Compound [VOC]monthly averagereport only (ug/L)all year
Volatile Organic Compound [VOC]daily maximum≤ 100 ug/Lall year
Volatile Organic Compound [VOC]daily maximum≤ 100 ug/Lall year
PER-AND POLYFLUOROALKYL SUBSTANCESmonthly averagereport only (ug/L)all year
PER-AND POLYFLUOROALKYL SUBSTANCESmonthly averagereport only (ug/L)all year
PER-AND POLYFLUOROALKYL SUBSTANCESdaily maximumreport only (ug/L)all year
PER-AND POLYFLUOROALKYL SUBSTANCESdaily maximumreport only (ug/L)all year
PER-AND POLYFLUOROALKYL SUBSTANCESmonthly averagereport only (ug/L)all year
PER-AND POLYFLUOROALKYL SUBSTANCESmonthly averagereport only (ug/L)all year
PER-AND POLYFLUOROALKYL SUBSTANCESdaily maximumreport only (ug/L)all year
PER-AND POLYFLUOROALKYL SUBSTANCESdaily maximumreport only (ug/L)all year
Mercury, total [as Hg]maximum monthly average≤ .77 ug/Lall year
Mercury, total [as Hg]maximum monthly average≤ .77 ug/Lall year
Mercury, total [as Hg]daily maximum≤ 1.4 ug/Lall year
Mercury, total [as Hg]daily maximum≤ 1.4 ug/Lall year
Flowmonthly averagereport only (gal/d)all year
Flowmonthly averagereport only (gal/d)all year
Flowdaily maximumreport only (gal/d)all year
Flowdaily maximumreport only (gal/d)all year
Trichloroethenemaximum monthly average≤ 10 ug/Lall year
Trichloroethenemaximum monthly average≤ 10 ug/Lall year
Trichloroethenedaily maximumreport only (ug/L)all year
Trichloroethenedaily maximumreport only (ug/L)all year
cis-1,2-Dichloroethenemaximum monthly average≤ 300 ug/Lall year
cis-1,2-Dichloroethenemaximum monthly average≤ 300 ug/Lall year
cis-1,2-Dichloroethenedaily maximumreport only (ug/L)all year
cis-1,2-Dichloroethenedaily maximumreport only (ug/L)all year

How strict are these limits?

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

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/MD0071773 · MCP: https://passage-data.com/mcp