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Pronghorn Operating, LLC

Crude Petroleum And Natural Gas, (Unknown City), Wyoming. NPDES permit WY0054151, in force until Dec 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 56 reports late

Limits in force (69)

ParameterStatisticLimitMonthsOutfall
Specific conductancedaily maximum≤ 7500 umho/cmall year001
pHinstantaneous minimum≥ 6.5 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Chloridedaily maximum≤ 2000 mg/Lall year001
Solids, total dissolveddaily maximumreport only (mg/L)all 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
Specific conductancedaily maximum≤ 7500 umho/cmall year004
pHinstantaneous minimum≥ 6.5 SUall year004
pHinstantaneous maximum≤ 9 SUall year004
Chloridedaily maximum≤ 2000 mg/Lall year004
Solids, total dissolveddaily maximumreport only (mg/L)all year004
Flowdaily maximumreport only (MGD)all year004
Flowdaily maximumreport only (MGD)all year004
Flowmonthly averagereport only (MGD)all year004
Flowmonthly averagereport only (MGD)all year004
Specific conductancedaily maximum≤ 7500 umho/cmall year005
pHinstantaneous minimum≥ 6.5 SUall year005
pHinstantaneous maximum≤ 9 SUall year005
Chloridedaily maximum≤ 2000 mg/Lall year005
Solids, total dissolveddaily maximumreport only (mg/L)all year005
Flowdaily maximumreport only (MGD)all year005
Flowdaily maximumreport only (MGD)all year005
Flowmonthly averagereport only (MGD)all year005
Flowmonthly averagereport only (MGD)all year005
Specific conductancedaily maximum≤ 7500 umho/cmall year006
pHinstantaneous minimum≥ 6.5 SUall year006
pHinstantaneous maximum≤ 9 SUall year006
Iron, dissolved [as Fe]daily maximum≤ 1000 ug/Lall year006
Chloridedaily maximum≤ 2000 mg/Lall year006
Solids, total dissolveddaily maximumreport only (mg/L)all year006
Flowdaily maximumreport only (MGD)all year006
Flowdaily maximumreport only (MGD)all year006
Flowmonthly averagereport only (MGD)all year006
Flowmonthly averagereport only (MGD)all year006
Specific conductancedaily maximumreport only (umho/cm)all yearCU1
pHinstantaneous minimumreport only (SU)all yearCU1
pHinstantaneous maximumreport only (SU)all yearCU1
Fluoride, dissolved [as F]daily maximumreport only (ug/L)all yearCU1
Selenium, total [as Se]daily maximumreport only (ug/L)all yearCU1
Chloridedaily maximumreport only (mg/L)all yearCU1
Solids, total dissolveddaily maximumreport only (mg/L)all yearCU1
Sulfatedaily maximumreport only (mg/L)all yearCU1
Specific conductancedaily maximumreport only (umho/cm)all yearCU4
pHinstantaneous minimumreport only (SU)all yearCU4
pHinstantaneous maximumreport only (SU)all yearCU4
Fluoride, dissolved [as F]daily maximumreport only (ug/L)all yearCU4
Selenium, total [as Se]daily maximumreport only (ug/L)all yearCU4
Chloridedaily maximumreport only (mg/L)all yearCU4
Solids, total dissolveddaily maximumreport only (mg/L)all yearCU4
Sulfatedaily maximumreport only (mg/L)all yearCU4
Specific conductancedaily maximumreport only (umho/cm)all yearCU5
pHinstantaneous minimumreport only (SU)all yearCU5
pHinstantaneous maximumreport only (SU)all yearCU5
Fluoride, dissolved [as F]daily maximumreport only (ug/L)all yearCU5
Selenium, total [as Se]daily maximumreport only (ug/L)all yearCU5
Chloridedaily maximumreport only (mg/L)all yearCU5
Solids, total dissolveddaily maximumreport only (mg/L)all yearCU5
Sulfatedaily maximumreport only (mg/L)all yearCU5
Specific conductancedaily maximumreport only (umho/cm)all yearCU6
pHinstantaneous minimumreport only (SU)all yearCU6
pHinstantaneous maximumreport only (SU)all yearCU6
Fluoride, dissolved [as F]daily maximumreport only (ug/L)all yearCU6
Selenium, total [as Se]daily maximumreport only (ug/L)all yearCU6
Chloridedaily maximumreport only (mg/L)all yearCU6
Solids, total dissolveddaily maximumreport only (mg/L)all yearCU6
Sulfatedaily maximumreport only (mg/L)all yearCU6

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/WY0054151 · MCP: https://passage-data.com/mcp