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Phillips 66 Company

Crude Petroleum And Natural Gas, Sheridan, Wyoming. NPDES permit WY0030481, in force until Apr 30, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form MS twice a year
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (20)

ParameterStatisticLimitMonths
Flow rate, instantaneousdaily maximumreport only (MGD)all year
Flow rate, instantaneousdaily maximumreport only (MGD)all year
pHinstantaneous minimum≥ 6.5 SUall year
pHinstantaneous minimum≥ 6.5 SUall year
pHinstantaneous maximum≤ 9 SUall year
pHinstantaneous maximum≤ 9 SUall year
Toluenedaily maximum≤ 1000 ug/Lall year
Toluenedaily maximum≤ 1000 ug/Lall year
Benzenedaily maximum≤ 1.2 ug/Lall year
Benzenedaily maximum≤ 1.2 ug/Lall year
Ethylbenzenedaily maximum≤ 530 ug/Lall year
Ethylbenzenedaily maximum≤ 530 ug/Lall year
Durationmonthly totalreport only (d/mo)all year
Durationmonthly totalreport only (d/mo)all year
Flow, totaldaily maximumreport only (Mgal)all year
Flow, totaldaily maximumreport only (Mgal)all year
Xylene [mix of m+o+p]daily maximum≤ 10000 ug/Lall year
Xylene [mix of m+o+p]daily maximum≤ 10000 ug/Lall year
Produced water, oil and greasedaily maximum≤ 10 mg/Lall year
Produced water, oil and greasedaily maximum≤ 10 mg/Lall year

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.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WY0030481 · MCP: https://passage-data.com/mcp