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White Rock Oil and Gas, L.L.C.

Crude Petroleum And Natural Gas, Unknown, Wyoming. NPDES permit WY0000388 expired Jun 30, 2023; its limits still apply. Last 12 months: no values over a limit, 22 required values missing, 21 of 21 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 29 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 DMP2 form DM twice a year
Last report on file
June 2026
Oct 2024 – Sep 2025
1 value over a limit, 11 required values missing, 5 of 26 reports late

Limits in force (15)

ParameterStatisticLimitMonthsOutfall
Specific conductancedaily maximum≤ 7500 umho/cmall year001
pHinstantaneous minimum≥ 6.5 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Sulfide, total [as S]daily maximumreport only (mg/L)all year001
Sulfate, total [as SO4]daily maximum≤ 3000 mg/Lall year001
Radium 226, totaldaily maximum≤ 60 pCi/Lall year001
Chloridedaily maximum≤ 230 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
Produced water, oil and greasedaily maximum≤ 10 mg/Lall year001
pHinstantaneous maximumreport only (SU)all yearDMP2
pHinstantaneous minimumreport only (SU)all yearDMP2
Sulfide, total [as S]daily maximumreport only (mg/L)all yearDMP2

How strict are these limits?

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

Same industry: the 209 Oil and Gas Extraction permits in Wyoming.

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/WY0000388 · MCP: https://passage-data.com/mcp