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

Crude Petroleum And Natural Gas, Unknown, Wyoming. NPDES permit WY0035491 expired Jun 30, 2023; its limits still apply. Last 12 months: over a limit 2 times (last June 2026), 50 required values missing, 48 of 48 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 002 form OM twice a year (4 values), outfall SUM form SM twice a year (4 values), outfall 001 form AW yearly, outfall 001 form OB twice a year, outfall 001 form OS twice a year, and 4 more forms

Last report on file

June 2026

Oct 2024 – Sep 2025

1 value over a limit, 27 required values missing, 12 of 60 reports late

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

Limits in force (41)

How strict are these limits?

• Radium 226, total, daily maximum 20 pCi/L — stricter than 81% of 131 other minor industrial and other permits in Wyoming; 1% have the same limit
• Chloride, daily maximum 230 mg/L — stricter than 73% of 228 other minor industrial and other permits in Wyoming; 13% have the same limit

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

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

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WY0035491 · MCP: https://passage-data.com/mcp