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Dos Cuadras Offshore Resources, LLC

Crude Petroleum And Natural Gas, Huntington Beach, California. NPDES permit CA0105996 expired Jun 30, 2023; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 32 days after each period: outfall 001 form A quarterly (2 values), outfall 002 form A quarterly (78 values), outfall INF form A quarterly (2 values)
Last report on file
December 2025
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 36 reports late

Limits in force (90)

ParameterStatisticLimitMonthsOutfall
Solids, total suspendedmonthly average≤ 60 mg/Lall year001
Solids, total suspendedmonthly average≤ 60 mg/Lall year001
Flow, in conduit or thru treatment plantdaily averagereport only (gal/d)all year001
Flow, in conduit or thru treatment plantdaily averagereport only (gal/d)all year001
Chlorine, total residualminimum≥ 1 mg/Lall year001
Chlorine, total residualminimum≥ 1 mg/Lall year001
Chlorine, total residualmaximum≤ 8.8 mg/Lall year001
Chlorine, total residualmaximum≤ 8.8 mg/Lall year001
Solids, suspended percent removalmonthly average minimum≥ 75 %all year001
Solids, suspended percent removalmonthly average minimum≥ 75 %all year001
pHminimumreport only (SU)all year002
pHminimumreport only (SU)all year002
pHmaximumreport only (SU)all year002
pHmaximumreport only (SU)all year002
Solids, total suspendeddaily maximumreport only (mg/L)all year002
Solids, total suspendeddaily maximumreport only (mg/L)all year002
Nitrogen, ammonia total [as N]daily maximumreport only (ug/L)all year002
Nitrogen, ammonia total [as N]daily maximumreport only (ug/L)all year002
Cyanide, total [as CN]daily maximumreport only (ug/L)all year002
Cyanide, total [as CN]daily maximumreport only (ug/L)all year002
Arsenic, total recoverabledaily maximumreport only (ug/L)all year002
Arsenic, total recoverabledaily maximumreport only (ug/L)all year002
Selenium, total recoverabledaily maximumreport only (ug/L)all year002
Selenium, total recoverabledaily maximumreport only (ug/L)all year002
Chromium, hexavalent [as Cr]daily maximumreport only (ug/L)all year002
Chromium, hexavalent [as Cr]daily maximumreport only (ug/L)all year002
Nickel, total recoverabledaily maximumreport only (ug/L)all year002
Nickel, total recoverabledaily maximumreport only (ug/L)all year002
Silver total recoverabledaily maximumreport only (ug/L)all year002
Silver total recoverabledaily maximumreport only (ug/L)all year002
Zinc, total recoverabledaily maximumreport only (ug/L)all year002
Zinc, total recoverabledaily maximumreport only (ug/L)all year002
Cadmium, total recoverabledaily maximumreport only (ug/L)all year002
Cadmium, total recoverabledaily maximumreport only (ug/L)all year002
Lead, total recoverabledaily maximumreport only (ug/L)all year002
Lead, total recoverabledaily maximumreport only (ug/L)all year002
Copper, total recoverabledaily maximumreport only (ug/L)all year002
Copper, total recoverabledaily maximumreport only (ug/L)all year002
Oil and greasemonthly average≤ 25 mg/Lall year002
Oil and greasemonthly average≤ 25 mg/Lall year002
Oil and greasedaily maximum≤ 42 mg/Lall year002
Oil and greasedaily maximum≤ 42 mg/Lall year002
Toluenedaily maximumreport only (ug/L)all year002
Toluenedaily maximumreport only (ug/L)all year002
Benzenedaily maximumreport only (ug/L)all year002
Benzenedaily maximumreport only (ug/L)all year002
Benzo[b]fluoranthenedaily maximumreport only (ug/L)all year002
Benzo[b]fluoranthenedaily maximumreport only (ug/L)all year002
Benzo[k]fluoranthenedaily maximumreport only (ug/L)all year002
Benzo[k]fluoranthenedaily maximumreport only (ug/L)all year002
Benzo[a]pyrenedaily maximumreport only (ug/L)all year002
Benzo[a]pyrenedaily maximumreport only (ug/L)all year002
Chrysenedaily maximumreport only (ug/L)all year002
Chrysenedaily maximumreport only (ug/L)all year002
Ethylbenzenedaily maximumreport only (ug/L)all year002
Ethylbenzenedaily maximumreport only (ug/L)all year002
Benzo[a]anthracenedaily maximumreport only (ug/L)all year002
Benzo[a]anthracenedaily maximumreport only (ug/L)all year002
Dibenz[a,h]anthracenedaily maximumreport only (ug/L)all year002
Dibenz[a,h]anthracenedaily maximumreport only (ug/L)all year002
2,4-Dimethylphenoldaily maximumreport only (ug/L)all year002
2,4-Dimethylphenoldaily maximumreport only (ug/L)all year002
Phenoldaily maximumreport only (ug/L)all year002
Phenoldaily maximumreport only (ug/L)all year002
Naphthalenedaily maximumreport only (ug/L)all year002
Naphthalenedaily maximumreport only (ug/L)all year002
Endosulfan, totaldaily maximumreport only (ug/L)all year002
Endosulfan, totaldaily maximumreport only (ug/L)all year002
Endrindaily maximumreport only (ug/L)all year002
Endrindaily maximumreport only (ug/L)all year002
Flow, in conduit or thru treatment plantdaily averagereport only (gal/d)all year002
Flow, in conduit or thru treatment plantdaily averagereport only (gal/d)all year002
Chlorine, total residualdaily maximumreport only (ug/L)all year002
Chlorine, total residualdaily maximumreport only (ug/L)all year002
Sulfide-hydrogen sulfide [undissociated]daily maximumreport only (ug/L)all year002
Sulfide-hydrogen sulfide [undissociated]daily maximumreport only (ug/L)all year002
Mercury, total recoverabledaily maximumreport only (ug/L)all year002
Mercury, total recoverabledaily maximumreport only (ug/L)all year002
Phenols, chlorinateddaily maximumreport only (ug/L)all year002
Phenols, chlorinateddaily maximumreport only (ug/L)all year002
Hexachlorocyclohexane, totaldaily maximumreport only (ug/L)all year002
Hexachlorocyclohexane, totaldaily maximumreport only (ug/L)all year002
Phenolic compounds, unchlorinateddaily maximumreport only (ug/L)all year002
Phenolic compounds, unchlorinateddaily maximumreport only (ug/L)all year002
TU Static Renewal 96Hr Acute Americamysis bahia (formerly Mysidopsis bahia)daily maximumreport only (tox acute)all year002
TU Static Renewal 96Hr Acute Americamysis bahia (formerly Mysidopsis bahia)daily maximumreport only (tox acute)all year002
Toxic Units Static Renewal 96Hr Acute Atherinops Affinisdaily maximumreport only (tox acute)all year002
Toxic Units Static Renewal 96Hr Acute Atherinops Affinisdaily maximumreport only (tox acute)all year002
Solids, total suspendeddaily maximumreport only (mg/L)all yearINF
Solids, total suspendeddaily maximumreport only (mg/L)all yearINF

How strict are these limits?

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

Same industry: the 3 Oil and Gas Extraction permits in California.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/CA0105996 · MCP: https://passage-data.com/mcp