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D & L Manufacturing, Inc.

Oil And Gas Field Machinery, Tulsa, Oklahoma. NPDES permit OK0045373, in force until May 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (44 values)
Renewal application due
Dec 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (44)

ParameterStatisticLimitMonths
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 31 mg/Lall year
Solids, total suspendeddaily maximum≤ 60 mg/Lall year
Solids, total suspendedmonthly average≤ 7.42 lb/dall year
Solids, total suspendeddaily maximum≤ 14.361 lb/dall year
Oil and grease, hexane extr methodmonthly average≤ 26 mg/Lall year
Oil and grease, hexane extr methoddaily maximum≤ 52 mg/Lall year
Oil and grease, hexane extr methodmonthly average≤ 6.223 lb/dall year
Oil and grease, hexane extr methoddaily maximum≤ 12.447 lb/dall year
Cadmium, total [as Cd]monthly average≤ 70 ug/Lall year
Cadmium, total [as Cd]daily maximum≤ 110 ug/Lall year
Cadmium, total [as Cd]monthly average≤ .017 lb/dall year
Cadmium, total [as Cd]daily maximum≤ .026 lb/dall year
Chromium, total [as Cr]monthly average≤ 1710 ug/Lall year
Chromium, total [as Cr]daily maximum≤ 2770 ug/Lall year
Chromium, total [as Cr]monthly average≤ .409 lb/dall year
Chromium, total [as Cr]daily maximum≤ .663 lb/dall year
Copper, total [as Cu]monthly average≤ 2070 ug/Lall year
Copper, total [as Cu]daily maximum≤ 3380 ug/Lall year
Copper, total [as Cu]monthly average≤ .495 lb/dall year
Copper, total [as Cu]daily maximum≤ .809 lb/dall year
Nickel, total [as Ni]monthly average≤ 2380 ug/Lall year
Nickel, total [as Ni]daily maximum≤ 3980 ug/Lall year
Nickel, total [as Ni]monthly average≤ .57 lb/dall year
Nickel, total [as Ni]daily maximum≤ .953 lb/dall year
Silver total recoverablemonthly average≤ 240 ug/Lall year
Silver total recoverabledaily maximum≤ 430 ug/Lall year
Silver total recoverablemonthly average≤ .057 lb/dall year
Silver total recoverabledaily maximum≤ .103 lb/dall year
Zinc, total [as Zn]monthly average≤ 1480 ug/Lall year
Zinc, total [as Zn]daily maximum≤ 2610 ug/Lall year
Zinc, total [as Zn]monthly average≤ .354 lb/dall year
Zinc, total [as Zn]daily maximum≤ .625 lb/dall year
Lead, total recoverablemonthly average≤ 430 ug/Lall year
Lead, total recoverabledaily maximum≤ 690 ug/Lall year
Lead, total recoverablemonthly average≤ .103 lb/dall year
Lead, total recoverabledaily maximum≤ .165 lb/dall year
Cyanide [A]monthly average≤ 650 ug/Lall year
Cyanide [A]daily maximum≤ 1200 ug/Lall year
Cyanide [A]monthly average≤ .156 lb/dall year
Cyanide [A]daily maximum≤ .287 lb/dall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year

How strict are these limits?

Cited limits by parameter: Oklahoma'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/OK0045373 · MCP: https://passage-data.com/mcp