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Pronghorn Operating, LLC

Industrial or other facility, (Unknown City), Wyoming. NPDES permit WY0094609, in force until Mar 31, 2027. Last 12 months: no values over a limit, 125 of 260 reports late. Source: EPA ECHO, Oct 22, 2026.

Renewal application due
Oct 2, 2026 · 180 days before expiry; your permit may set another date
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 328 reports late

Limits in force (412)

ParameterStatisticLimitMonthsOutfall
Specific conductancedaily maximum≤ 7500 umho/cmall year001
Specific conductancedaily maximum≤ 7500 umho/cmall year001
pHinstantaneous minimum≥ 6.5 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Alkalinity, total [as CaCO3]daily maximumreport only (mg/L)all year001
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year001
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year001
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year001
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year001
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year001
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year001
Sodium adsorption ratiodaily maximumreport only (Ratio)all year001
Sodium adsorption ratiodaily maximumreport only (Ratio)all year001
Arsenic, total [as As]daily maximum≤ 8.4 ug/Lall year001
Barium, total [as Ba]daily maximum≤ 1800 ug/Lall year001
Iron, dissolved [as Fe]daily maximum≤ 1000 ug/Lall year001
Chloridedaily maximum≤ 150 mg/Lall year001
Bicarbonate as [CaCO3]daily maximumreport only (mg/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all 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
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
Specific conductancedaily maximum≤ 7500 umho/cmall year002
Specific conductancedaily maximum≤ 7500 umho/cmall year002
pHinstantaneous minimum≥ 6.5 SUall year002
pHinstantaneous maximum≤ 9 SUall year002
Alkalinity, total [as CaCO3]daily maximumreport only (mg/L)all year002
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year002
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year002
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year002
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year002
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year002
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year002
Sodium adsorption ratiodaily maximumreport only (Ratio)all year002
Sodium adsorption ratiodaily maximumreport only (Ratio)all year002
Arsenic, total [as As]daily maximum≤ 8.4 ug/Lall year002
Barium, total [as Ba]daily maximum≤ 1800 ug/Lall year002
Iron, dissolved [as Fe]daily maximum≤ 1000 ug/Lall year002
Chloridedaily maximum≤ 150 mg/Lall year002
Bicarbonate as [CaCO3]daily maximumreport only (mg/L)all year002
Solids, total dissolveddaily maximumreport only (mg/L)all year002
Solids, total dissolveddaily maximumreport only (mg/L)all year002
Flowdaily maximumreport only (MGD)all year002
Flowdaily maximumreport only (MGD)all year002
Flowmonthly averagereport only (MGD)all year002
Flowmonthly averagereport only (MGD)all year002
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia48-hour maximum≤ 0 pass=0;fail=1all year002
Pass/Fail Static 96 Hr Acute Pimephales Promelas96-hour value≤ 0 pass=0;fail=1all year002
Specific conductancedaily maximum≤ 7500 umho/cmall year003
Specific conductancedaily maximum≤ 7500 umho/cmall year003
pHinstantaneous minimum≥ 6.5 SUall year003
pHinstantaneous maximum≤ 9 SUall year003
Alkalinity, total [as CaCO3]daily maximumreport only (mg/L)all year003
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year003
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year003
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year003
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year003
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year003
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year003
Sodium adsorption ratiodaily maximumreport only (Ratio)all year003
Sodium adsorption ratiodaily maximumreport only (Ratio)all year003
Arsenic, total [as As]daily maximum≤ 8.4 ug/Lall year003
Barium, total [as Ba]daily maximum≤ 1800 ug/Lall year003
Iron, dissolved [as Fe]daily maximum≤ 1000 ug/Lall year003
Chloridedaily maximum≤ 150 mg/Lall year003
Bicarbonate as [CaCO3]daily maximumreport only (mg/L)all year003
Solids, total dissolveddaily maximumreport only (mg/L)all year003
Solids, total dissolveddaily maximumreport only (mg/L)all year003
Flowdaily maximumreport only (MGD)all year003
Flowdaily maximumreport only (MGD)all year003
Flowmonthly averagereport only (MGD)all year003
Flowmonthly averagereport only (MGD)all year003
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia48-hour maximum≤ 0 pass=0;fail=1all year003
Pass/Fail Static 96 Hr Acute Pimephales Promelas96-hour value≤ 0 pass=0;fail=1all year003
Specific conductancedaily maximum≤ 7500 umho/cmall year004
Specific conductancedaily maximum≤ 7500 umho/cmall year004
pHinstantaneous minimum≥ 6.5 SUall year004
pHinstantaneous maximum≤ 9 SUall year004
Alkalinity, total [as CaCO3]daily maximumreport only (mg/L)all year004
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year004
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year004
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year004
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year004
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year004
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year004
Sodium adsorption ratiodaily maximumreport only (Ratio)all year004
Sodium adsorption ratiodaily maximumreport only (Ratio)all year004
Arsenic, total [as As]daily maximum≤ 8.4 ug/Lall year004
Barium, total [as Ba]daily maximum≤ 1800 ug/Lall year004
Iron, dissolved [as Fe]daily maximum≤ 1000 ug/Lall year004
Chloridedaily maximum≤ 150 mg/Lall year004
Bicarbonate as [CaCO3]daily maximumreport only (mg/L)all year004
Solids, total dissolveddaily maximumreport only (mg/L)all 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
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia48-hour maximum≤ 0 pass=0;fail=1all year004
Pass/Fail Static 96 Hr Acute Pimephales Promelas96-hour value≤ 0 pass=0;fail=1all year004
Specific conductancedaily maximum≤ 7500 umho/cmall year005
Specific conductancedaily maximum≤ 7500 umho/cmall year005
pHinstantaneous minimum≥ 6.5 SUall year005
pHinstantaneous maximum≤ 9 SUall year005
Alkalinity, total [as CaCO3]daily maximumreport only (mg/L)all year005
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year005
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year005
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year005
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year005
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year005
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year005
Sodium adsorption ratiodaily maximumreport only (Ratio)all year005
Sodium adsorption ratiodaily maximumreport only (Ratio)all year005
Arsenic, total [as As]daily maximum≤ 8.4 ug/Lall year005
Barium, total [as Ba]daily maximum≤ 1800 ug/Lall year005
Iron, dissolved [as Fe]daily maximum≤ 1000 ug/Lall year005
Chloridedaily maximum≤ 150 mg/Lall year005
Bicarbonate as [CaCO3]daily maximumreport only (mg/L)all year005
Solids, total dissolveddaily maximumreport only (mg/L)all 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
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia48-hour maximum≤ 0 pass=0;fail=1all year005
Pass/Fail Static 96 Hr Acute Pimephales Promelas96-hour value≤ 0 pass=0;fail=1all year005
Specific conductancedaily maximum≤ 7500 umho/cmall year006
Specific conductancedaily maximum≤ 7500 umho/cmall year006
pHinstantaneous minimum≥ 6.5 SUall year006
pHinstantaneous maximum≤ 9 SUall year006
Alkalinity, total [as CaCO3]daily maximumreport only (mg/L)all year006
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year006
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year006
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year006
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year006
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year006
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year006
Sodium adsorption ratiodaily maximumreport only (Ratio)all year006
Sodium adsorption ratiodaily maximumreport only (Ratio)all year006
Arsenic, total [as As]daily maximum≤ 8.4 ug/Lall year006
Barium, total [as Ba]daily maximum≤ 1800 ug/Lall year006
Iron, dissolved [as Fe]daily maximum≤ 1000 ug/Lall year006
Chloridedaily maximum≤ 150 mg/Lall year006
Bicarbonate as [CaCO3]daily maximumreport only (mg/L)all year006
Solids, total dissolveddaily maximumreport only (mg/L)all 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
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia48-hour maximum≤ 0 pass=0;fail=1all year006
Pass/Fail Static 96 Hr Acute Pimephales Promelas96-hour value≤ 0 pass=0;fail=1all year006
Specific conductancedaily maximum≤ 7500 umho/cmall year007
Specific conductancedaily maximum≤ 7500 umho/cmall year007
pHinstantaneous minimum≥ 6.5 SUall year007
pHinstantaneous maximum≤ 9 SUall year007
Alkalinity, total [as CaCO3]daily maximumreport only (mg/L)all year007
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year007
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year007
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year007
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year007
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year007
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year007
Sodium adsorption ratiodaily maximumreport only (Ratio)all year007
Sodium adsorption ratiodaily maximumreport only (Ratio)all year007
Arsenic, total [as As]daily maximum≤ 8.4 ug/Lall year007
Barium, total [as Ba]daily maximum≤ 1800 ug/Lall year007
Iron, dissolved [as Fe]daily maximum≤ 1000 ug/Lall year007
Chloridedaily maximum≤ 150 mg/Lall year007
Bicarbonate as [CaCO3]daily maximumreport only (mg/L)all year007
Solids, total dissolveddaily maximumreport only (mg/L)all year007
Solids, total dissolveddaily maximumreport only (mg/L)all year007
Flowdaily maximumreport only (MGD)all year007
Flowdaily maximumreport only (MGD)all year007
Flowmonthly averagereport only (MGD)all year007
Flowmonthly averagereport only (MGD)all year007
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia48-hour maximum≤ 0 pass=0;fail=1all year007
Pass/Fail Static 96 Hr Acute Pimephales Promelas96-hour value≤ 0 pass=0;fail=1all year007
Specific conductancedaily maximum≤ 7500 umho/cmall year008
Specific conductancedaily maximum≤ 7500 umho/cmall year008
pHinstantaneous minimum≥ 6.5 SUall year008
pHinstantaneous maximum≤ 9 SUall year008
Alkalinity, total [as CaCO3]daily maximumreport only (mg/L)all year008
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year008
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year008
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year008
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year008
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year008
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year008
Sodium adsorption ratiodaily maximumreport only (Ratio)all year008
Sodium adsorption ratiodaily maximumreport only (Ratio)all year008
Arsenic, total [as As]daily maximum≤ 8.4 ug/Lall year008
Barium, total [as Ba]daily maximum≤ 1800 ug/Lall year008
Iron, dissolved [as Fe]daily maximum≤ 1000 ug/Lall year008
Chloridedaily maximum≤ 150 mg/Lall year008
Bicarbonate as [CaCO3]daily maximumreport only (mg/L)all year008
Solids, total dissolveddaily maximumreport only (mg/L)all year008
Solids, total dissolveddaily maximumreport only (mg/L)all year008
Flowdaily maximumreport only (MGD)all year008
Flowdaily maximumreport only (MGD)all year008
Flowmonthly averagereport only (MGD)all year008
Flowmonthly averagereport only (MGD)all year008
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia48-hour maximum≤ 0 pass=0;fail=1all year008
Pass/Fail Static 96 Hr Acute Pimephales Promelas96-hour value≤ 0 pass=0;fail=1all year008
Specific conductancedaily maximum≤ 7500 umho/cmall year009
Specific conductancedaily maximum≤ 7500 umho/cmall year009
pHinstantaneous minimum≥ 6.5 SUall year009
pHinstantaneous maximum≤ 9 SUall year009
Alkalinity, total [as CaCO3]daily maximumreport only (mg/L)all year009
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year009
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year009
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year009
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year009
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year009
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year009
Sodium adsorption ratiodaily maximumreport only (Ratio)all year009
Sodium adsorption ratiodaily maximumreport only (Ratio)all year009
Arsenic, total [as As]daily maximum≤ 8.4 ug/Lall year009
Barium, total [as Ba]daily maximum≤ 1800 ug/Lall year009
Iron, dissolved [as Fe]daily maximum≤ 1000 ug/Lall year009
Chloridedaily maximum≤ 150 mg/Lall year009
Bicarbonate as [CaCO3]daily maximumreport only (mg/L)all year009
Solids, total dissolveddaily maximumreport only (mg/L)all year009
Solids, total dissolveddaily maximumreport only (mg/L)all year009
Flowdaily maximumreport only (MGD)all year009
Flowdaily maximumreport only (MGD)all year009
Flowmonthly averagereport only (MGD)all year009
Flowmonthly averagereport only (MGD)all year009
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia48-hour maximum≤ 0 pass=0;fail=1all year009
Pass/Fail Static 96 Hr Acute Pimephales Promelas96-hour value≤ 0 pass=0;fail=1all year009
Specific conductancedaily maximum≤ 7500 umho/cmall year010
Specific conductancedaily maximum≤ 7500 umho/cmall year010
pHinstantaneous minimum≥ 6.5 SUall year010
pHinstantaneous maximum≤ 9 SUall year010
Alkalinity, total [as CaCO3]daily maximumreport only (mg/L)all year010
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year010
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year010
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year010
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year010
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year010
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year010
Sodium adsorption ratiodaily maximumreport only (Ratio)all year010
Sodium adsorption ratiodaily maximumreport only (Ratio)all year010
Arsenic, total [as As]daily maximum≤ 8.4 ug/Lall year010
Barium, total [as Ba]daily maximum≤ 1800 ug/Lall year010
Iron, dissolved [as Fe]daily maximum≤ 1000 ug/Lall year010
Chloridedaily maximum≤ 150 mg/Lall year010
Bicarbonate as [CaCO3]daily maximumreport only (mg/L)all year010
Solids, total dissolveddaily maximumreport only (mg/L)all year010
Solids, total dissolveddaily maximumreport only (mg/L)all year010
Flowdaily maximumreport only (MGD)all year010
Flowdaily maximumreport only (MGD)all year010
Flowmonthly averagereport only (MGD)all year010
Flowmonthly averagereport only (MGD)all year010
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia48-hour maximum≤ 0 pass=0;fail=1all year010
Pass/Fail Static 96 Hr Acute Pimephales Promelas96-hour value≤ 0 pass=0;fail=1all year010
Specific conductancedaily maximum≤ 7500 umho/cmall year011
Specific conductancedaily maximum≤ 7500 umho/cmall year011
pHinstantaneous minimum≥ 6.5 SUall year011
pHinstantaneous maximum≤ 9 SUall year011
Alkalinity, total [as CaCO3]daily maximumreport only (mg/L)all year011
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year011
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year011
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year011
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year011
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year011
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year011
Sodium adsorption ratiodaily maximumreport only (Ratio)all year011
Sodium adsorption ratiodaily maximumreport only (Ratio)all year011
Arsenic, total [as As]daily maximum≤ 8.4 ug/Lall year011
Barium, total [as Ba]daily maximum≤ 1800 ug/Lall year011
Iron, dissolved [as Fe]daily maximum≤ 1000 ug/Lall year011
Chloridedaily maximum≤ 150 mg/Lall year011
Bicarbonate as [CaCO3]daily maximumreport only (mg/L)all year011
Solids, total dissolveddaily maximumreport only (mg/L)all year011
Solids, total dissolveddaily maximumreport only (mg/L)all year011
Flowdaily maximumreport only (MGD)all year011
Flowdaily maximumreport only (MGD)all year011
Flowmonthly averagereport only (MGD)all year011
Flowmonthly averagereport only (MGD)all year011
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia48-hour maximum≤ 0 pass=0;fail=1all year011
Pass/Fail Static 96 Hr Acute Pimephales Promelas96-hour value≤ 0 pass=0;fail=1all year011
Specific conductancedaily maximum≤ 7500 umho/cmall year012
Specific conductancedaily maximum≤ 7500 umho/cmall year012
pHinstantaneous minimum≥ 6.5 SUall year012
pHinstantaneous maximum≤ 9 SUall year012
Alkalinity, total [as CaCO3]daily maximumreport only (mg/L)all year012
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year012
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year012
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year012
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year012
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year012
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year012
Sodium adsorption ratiodaily maximumreport only (Ratio)all year012
Sodium adsorption ratiodaily maximumreport only (Ratio)all year012
Arsenic, total [as As]daily maximum≤ 8.4 ug/Lall year012
Barium, total [as Ba]daily maximum≤ 1800 ug/Lall year012
Iron, dissolved [as Fe]daily maximum≤ 1000 ug/Lall year012
Chloridedaily maximum≤ 150 mg/Lall year012
Bicarbonate as [CaCO3]daily maximumreport only (mg/L)all year012
Solids, total dissolveddaily maximumreport only (mg/L)all year012
Solids, total dissolveddaily maximumreport only (mg/L)all year012
Flowdaily maximumreport only (MGD)all year012
Flowdaily maximumreport only (MGD)all year012
Flowmonthly averagereport only (MGD)all year012
Flowmonthly averagereport only (MGD)all year012
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia48-hour maximum≤ 0 pass=0;fail=1all year012
Pass/Fail Static 96 Hr Acute Pimephales Promelas96-hour value≤ 0 pass=0;fail=1all year012
Specific conductancedaily maximum≤ 7500 umho/cmall year013
Specific conductancedaily maximum≤ 7500 umho/cmall year013
pHinstantaneous minimum≥ 6.5 SUall year013
pHinstantaneous maximum≤ 9 SUall year013
Alkalinity, total [as CaCO3]daily maximumreport only (mg/L)all year013
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year013
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year013
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year013
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year013
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year013
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year013
Sodium adsorption ratiodaily maximumreport only (Ratio)all year013
Sodium adsorption ratiodaily maximumreport only (Ratio)all year013
Arsenic, total [as As]daily maximum≤ 8.4 ug/Lall year013
Barium, total [as Ba]daily maximum≤ 1800 ug/Lall year013
Iron, dissolved [as Fe]daily maximum≤ 1000 ug/Lall year013
Chloridedaily maximum≤ 150 mg/Lall year013
Bicarbonate as [CaCO3]daily maximumreport only (mg/L)all year013
Solids, total dissolveddaily maximumreport only (mg/L)all year013
Solids, total dissolveddaily maximumreport only (mg/L)all year013
Flowdaily maximumreport only (MGD)all year013
Flowdaily maximumreport only (MGD)all year013
Flowmonthly averagereport only (MGD)all year013
Flowmonthly averagereport only (MGD)all year013
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia48-hour maximum≤ 0 pass=0;fail=1all year013
Pass/Fail Static 96 Hr Acute Pimephales Promelas96-hour value≤ 0 pass=0;fail=1all year013
Specific conductancedaily maximum≤ 7500 umho/cmall year014
Specific conductancedaily maximum≤ 7500 umho/cmall year014
pHinstantaneous minimum≥ 6.5 SUall year014
pHinstantaneous maximum≤ 9 SUall year014
Alkalinity, total [as CaCO3]daily maximumreport only (mg/L)all year014
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year014
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all year014
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year014
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all year014
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year014
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all year014
Sodium adsorption ratiodaily maximumreport only (Ratio)all year014
Sodium adsorption ratiodaily maximumreport only (Ratio)all year014
Arsenic, total [as As]daily maximum≤ 8.4 ug/Lall year014
Barium, total [as Ba]daily maximum≤ 1800 ug/Lall year014
Iron, dissolved [as Fe]daily maximum≤ 1000 ug/Lall year014
Chloridedaily maximum≤ 150 mg/Lall year014
Bicarbonate as [CaCO3]daily maximumreport only (mg/L)all year014
Solids, total dissolveddaily maximumreport only (mg/L)all year014
Solids, total dissolveddaily maximumreport only (mg/L)all year014
Flowdaily maximumreport only (MGD)all year014
Flowdaily maximumreport only (MGD)all year014
Flowmonthly averagereport only (MGD)all year014
Flowmonthly averagereport only (MGD)all year014
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia48-hour maximum≤ 0 pass=0;fail=1all year014
Pass/Fail Static 96 Hr Acute Pimephales Promelas96-hour value≤ 0 pass=0;fail=1all year014
Specific conductancedaily maximumreport only (umho/cm)all yearDPR
Specific conductancedaily maximumreport only (umho/cm)all yearDPR
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all yearDPR
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all yearDPR
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all yearDPR
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all yearDPR
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all yearDPR
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all yearDPR
Sodium adsorption ratiodaily maximumreport only (Ratio)all yearDPR
Sodium adsorption ratiodaily maximumreport only (Ratio)all yearDPR
Specific conductancedaily maximumreport only (umho/cm)all yearTRB1
Specific conductancedaily maximumreport only (umho/cm)all yearTRB1
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all yearTRB1
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all yearTRB1
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all yearTRB1
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all yearTRB1
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all yearTRB1
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all yearTRB1
Sodium adsorption ratiodaily maximumreport only (Ratio)all yearTRB1
Sodium adsorption ratiodaily maximumreport only (Ratio)all yearTRB1
Flowdaily maximumreport only (MGD)all yearTRB1
Flowdaily maximumreport only (MGD)all yearTRB1
Flowmonthly averagereport only (MGD)all yearTRB1
Flowmonthly averagereport only (MGD)all yearTRB1
Specific conductancedaily maximumreport only (umho/cm)all yearTRB2
Specific conductancedaily maximumreport only (umho/cm)all yearTRB2
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all yearTRB2
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all yearTRB2
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all yearTRB2
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all yearTRB2
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all yearTRB2
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all yearTRB2
Sodium adsorption ratiodaily maximumreport only (Ratio)all yearTRB2
Sodium adsorption ratiodaily maximumreport only (Ratio)all yearTRB2
Flowdaily maximumreport only (MGD)all yearTRB2
Flowdaily maximumreport only (MGD)all yearTRB2
Flowmonthly averagereport only (MGD)all yearTRB2
Flowmonthly averagereport only (MGD)all yearTRB2
Specific conductancedaily maximumreport only (umho/cm)all yearUPR1
Specific conductancedaily maximumreport only (umho/cm)all yearUPR1
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all yearUPR1
Calcium, dissolved [as Ca]daily maximumreport only (mg/L)all yearUPR1
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all yearUPR1
Magnesium, dissolved [as Mg]daily maximumreport only (mg/L)all yearUPR1
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all yearUPR1
Sodium, dissolved [as Na]daily maximumreport only (mg/L)all yearUPR1
Sodium adsorption ratiodaily maximumreport only (Ratio)all yearUPR1
Sodium adsorption ratiodaily maximumreport only (Ratio)all yearUPR1

How strict are these limits?

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

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/WY0094609 · MCP: https://passage-data.com/mcp