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Diamond Oil & Gas

Industrial or other facility, (Unknown City), Wyoming. NPDES permit WY0096946, in force until Mar 31, 2028. Last 12 months: no values over a limit, 34 required values missing, 9 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form OM twice a year (4 values), outfall 001 form OB twice a year, outfall 001 form OS twice a year, outfall 001 form WA yearly, outfall DMP1 form DM twice a year
Renewal application due
Oct 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
January 2026
Oct 2024 – Sep 2025
0 values over a limit, 2 required values missing, 17 of 27 reports late

Limits in force (23)

ParameterStatisticLimitMonthsOutfall
Specific conductancedaily maximum≤ 7500 umho/cmall year001
pHinstantaneous maximum≤ 9 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
pHinstantaneous minimum≥ 6.5 SUall year001
pHinstantaneous minimum≥ 6.5 SUall year001
Sulfide, total [as S]daily maximumreport only (mg/L)all year001
Sulfide, total [as S]daily maximumreport only (mg/L)all year001
Chloridedaily maximum≤ 2000 mg/Lall year001
Flowdaily maximumreport only (MGD)all year001
Flowdaily maximumreport only (MGD)all year001
Flowmonthly averagereport only (MGD)all year001
Flowmonthly averagereport only (MGD)all year001
Sulfatedaily maximum≤ 3000 mg/Lall year001
Produced water, oil and greasedaily maximum≤ 10 mg/Lall year001
Produced water, oil and greasedaily maximum≤ 10 mg/Lall year001
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia48-hour maximum≤ 0 pass=0;fail=1all year001
Pass/Fail Static 96 Hr Acute Pimephales Promelas96-hour value≤ 0 pass=0;fail=1all year001
pHinstantaneous maximum≤ 9 SUall yearDMP1
pHinstantaneous maximum≤ 9 SUall yearDMP1
pHinstantaneous minimum≥ 6.5 SUall yearDMP1
pHinstantaneous minimum≥ 6.5 SUall yearDMP1
Sulfide, total [as S]daily maximumreport only (mg/L)all yearDMP1
Sulfide, total [as S]daily maximumreport only (mg/L)all yearDMP1

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WY0096946 · MCP: https://passage-data.com/mcp