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Merit Energy Company-Chatterton Battery

Crude Petroleum And Natural Gas, Fremont County, Wyoming. NPDES permit WY0000922 expired Jun 30, 2025; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A twice a year (8 values), form Q twice a year (4 values), form M3 yearly, form S twice a year, form T3 yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 20 reports late

Limits in force (113)

ParameterStatisticLimitMonths
Specific conductancedaily maximum≤ 7500 uS/cmall year
Sulfate [as S]daily maximum≤ 2500 mg/Lall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Oil & Greasedaily maximum≤ 10 mg/Lall year
Cyanide, total [as CN]daily maximumreport only (ug/L)all year
Sulfide, total [as S]daily maximumreport only (mg/L)all year
Chloride [as Cl]daily maximum≤ 2000 mg/Lall year
Fluoridedaily maximumreport only (mg/L)all year
Arsenic, total [as As]daily maximumreport only (ug/L)all year
Beryllium, total [as Be]daily maximumreport only (ug/L)all year
Cadmium, total [as Cd]daily maximumreport only (ug/L)all year
Chromium, total [as Cr]daily maximumreport only (ug/L)all year
Copper, total [as Cu]daily maximumreport only (ug/L)all year
Lead, total [as Pb]daily maximumreport only (ug/L)all year
Thallium, total [as Tl]daily maximumreport only (ug/L)all year
Nickel, total [as Ni]daily maximumreport only (ug/L)all year
Silver, total [as Ag]daily maximumreport only (ug/L)all year
Zinc, total [as Zn]daily maximumreport only (ug/L)all year
Antimony, total [as Sb]daily maximumreport only (ug/L)all year
Cadmium, total recoverabledaily maximumreport only (ug/L)all year
Selenium, total [as Se]daily maximumreport only (ug/L)all year
Total phenolsdaily maximumreport only (ug/L)all year
Radium 226, totaldaily maximum≤ 60 pCi/Lall year
Dichlorobromomethanedaily maximumreport only (mg/L)all year
Carbon tetrachloridedaily maximumreport only (mg/L)all year
1,2-Dichloroethanedaily maximumreport only (mg/L)all year
Bromoformdaily maximumreport only (mg/L)all year
Chloroformdaily maximumreport only (mg/L)all year
Toluenedaily maximumreport only (mg/L)all year
Benzenedaily maximumreport only (mg/L)all year
Acenaphthylenedaily maximumreport only (mg/L)all year
Acenaphthenedaily maximumreport only (mg/L)all year
Acroleindaily maximumreport only (mg/L)all year
Acrylonitriledaily maximumreport only (mg/L)all year
Anthracenedaily maximumreport only (mg/L)all year
Benzo[k]fluoranthenedaily maximumreport only (mg/L)all year
Benzo[a]pyrenedaily maximumreport only (mg/L)all year
Bis[2-chloroethyl] etherdaily maximumreport only (mg/L)all year
Bis[2-chloroethoxy]methanedaily maximumreport only (mg/L)all year
Bis[2-chloroisopropyl] etherdaily maximumreport only (mg/L)all year
Butyl benzyl phthalatedaily maximumreport only (mg/L)all year
Chlorobenzenedaily maximumreport only (mg/L)all year
Chlorodibromomethanedaily maximumreport only (mg/L)all year
Chrysenedaily maximumreport only (mg/L)all year
Diethyl phthalatedaily maximumreport only (mg/L)all year
Dimethyl phthalatedaily maximumreport only (mg/L)all year
1,2-Diphenylhydrazinedaily maximumreport only (mg/L)all year
Ethylbenzenedaily maximumreport only (mg/L)all year
Fluoranthenedaily maximumreport only (mg/L)all year
Fluorenedaily maximumreport only (mg/L)all year
Hexachlorocyclopentadienedaily maximumreport only (mg/L)all year
Hexachloroethanedaily maximumreport only (mg/L)all year
Indeno[1,2,3-cd]pyrenedaily maximumreport only (mg/L)all year
Isophoronedaily maximumreport only (mg/L)all year
Methyl bromide [Bromomethane]daily maximumreport only (mg/L)all year
Methyl chloride [Chloromethane]daily maximumreport only (mg/L)all year
Methylene chloridedaily maximumreport only (mg/L)all year
N-Nitrosodi-N-propylaminedaily maximumreport only (mg/L)all year
N-Nitrosodiphenylaminedaily maximumreport only (mg/L)all year
N-Nitrosodimethylamine [NDMA]daily maximumreport only (mg/L)all year
Nitrobenzenedaily maximumreport only (mg/L)all year
Phenanthrenedaily maximumreport only (mg/L)all year
Pyrenedaily maximumreport only (mg/L)all year
Tetrachloroethylenedaily maximumreport only (mg/L)all year
1,1-Dichloroethanedaily maximumreport only (mg/L)all year
1,1-Dichloroethylenedaily maximumreport only (mg/L)all year
1,1,1-Trichloroethanedaily maximumreport only (mg/L)all year
1,1,2-Trichloroethanedaily maximumreport only (mg/L)all year
1,1,2,2-Tetrachloroethanedaily maximumreport only (mg/L)all year
Benzo[ghi]perylenedaily maximumreport only (mg/L)all year
Benzo[a]anthracenedaily maximumreport only (mg/L)all year
1,2-Dichlorobenzenedaily maximumreport only (mg/L)all year
1,2-Dichloropropanedaily maximumreport only (mg/L)all year
1,2-trans-Dichloroethylene, dry weightdaily maximumreport only (mg/L)all year
1,2,4-Trichlorobenzenedaily maximumreport only (mg/L)all year
Dibenz[a,h]anthracenedaily maximumreport only (mg/L)all year
1,3-Dichlorobenzenedaily maximumreport only (mg/L)all year
1,4-Dichlorobenzenedaily maximumreport only (mg/L)all year
2-Chloroethyl vinyl ether, [mixed]daily maximumreport only (mg/L)all year
2-Chloronaphthalenedaily maximumreport only (mg/L)all year
2-Chlorophenoldaily maximumreport only (mg/L)all year
2-Nitrophenoldaily maximumreport only (mg/L)all year
Di-n-octyl phthalatedaily maximumreport only (mg/L)all year
2,4-Dichlorophenoldaily maximumreport only (mg/L)all year
2,4-Dimethylphenoldaily maximumreport only (mg/L)all year
2,4-Dinitrotoluenedaily maximumreport only (mg/L)all year
2,4-Dinitrophenoldaily maximumreport only (mg/L)all year
2,4,6-Trichlorophenoldaily maximumreport only (mg/L)all year
2,6-Dinitrotoluenedaily maximumreport only (mg/L)all year
3,3'-Dichlorobenzidinedaily maximumreport only (mg/L)all year
4-Bromophenyl phenyl etherdaily maximumreport only (mg/L)all year
4-Chlorophenyl phenyl etherdaily maximumreport only (mg/L)all year
4-Nitrophenoldaily maximumreport only (mg/L)all year
4,6-Dinitro-o-cresoldaily maximumreport only (mg/L)all year
Phenoldaily maximumreport only (mg/L)all year
Naphthalenedaily maximumreport only (mg/L)all year
Pentachlorophenoldaily maximumreport only (mg/L)all year
Di-n-butyl phthalatedaily maximumreport only (mg/L)all year
Benzidinedaily maximumreport only (mg/L)all year
Vinyl chloridedaily maximumreport only (mg/L)all year
Trichloroethylenedaily maximumreport only (mg/L)all year
Hexachlorobenzenedaily maximumreport only (mg/L)all year
Hexachlorobutadienedaily maximumreport only (mg/L)all year
Floating solids, waste or visible foam-visualinstantaneous maximumreport only (N=0;Y=1)all year
Solids, total dissolveddaily maximum≤ 5000 mg/Lall year
Mercury, total [as Hg]daily maximumreport only (ug/L)all year
3,4-Benzofluoranthenedaily maximumreport only (mg/L)all year
Flow, total30-day averagereport only (MGD)all year
Flow, totaldaily maximumreport only (MGD)all year
p-Chloro-m-cresoldaily maximumreport only (mg/L)all year
Oil and grease visualinstantaneous maximumreport only (N=0;Y=1)all year
Chloroethanedaily maximumreport only (mg/L)all 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/WY0000922 · MCP: https://passage-data.com/mcp