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Kemmerer-Diamondville Joint Powers Board

Sewage treatment plant, major discharger, (Unknown City), Wyoming. NPDES permit WY0020320, in force until Aug 31, 2028. Last 12 months: no values over a limit, 24 required values missing, 8 of 46 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form QQ yearly (4 values), outfall 001 form WM monthly (31 values), outfall CRS1 form MM monthly (1 value), outfall UMP1 form MM monthly (4 values), outfall 001 form MA yearly
Renewal application due
Mar 4, 2028 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 19 required values missing, 6 of 58 reports late

Limits in force (49)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigradeinstantaneous minimumreport only (deg C)all year001
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all year001
Oxygen, dissolved [DO]daily maximumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
pHinstantaneous minimum≥ 6.5 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Solids, total suspendedweekly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ 12.62 mg/LJan, Feb, Mar, Apr, Oct, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 5.4 mg/LMay–Sep001
Nitrogen, ammonia total [as N]daily maximum≤ 30.38 mg/LJan, Feb, Mar, Apr, Oct, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 19.18 mg/LMay–Sep001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Durationmonthly totalreport only (d/mo)all year001
Chlorine, total residualdaily maximum≤ .085 mg/LJan, Feb, Mar, Apr, Oct, Nov, Dec001
Chlorine, total residualmonthly average≤ .045 mg/LMay–Sep001
Chlorine, total residualmonthly average≤ .049 mg/LJan, Feb, Mar, Apr, Oct, Nov, Dec001
Chlorine, total residualdaily maximum≤ .078 mg/LMay–Sep001
E. colidaily maximum≤ 2644 MPN/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec001
E. colimonthly geometric mean≤ 363 MPN/100mLMay–Sep001
E. colimonthly geometric mean≤ 2644 MPN/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec001
E. colidaily maximum≤ 811 MPN/100mLMay–Sep001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Solids, total dissolvedmonthly averagereport only (mg/L)all year001
Flowmonthly average≤ 1.43 MGDall year001
Flowdaily maximumreport only (MGD)all year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Produced water, oil and greasedaily maximum≤ 10 mg/Lall year001
Pass/Fail Static 48Hr Acute Ceriodaphnia dubiaweekly average≤ 0 pass=0;fail=1all year001
Pass/Fail Static 96 Hr Acute Pimephales Promelasweekly average≤ 0 pass=0;fail=1all year001
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day maximum≤ 0 pass=0;fail=1all year001
Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7-day maximum≤ 0 pass=0;fail=1all year001
Solids, total dissolveddaily maximumreport only (mg/L)all yearCRS1
Temperature, water deg. centigradeinstantaneous minimumreport only (deg C)all yearUMP1
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all yearUMP1
pHinstantaneous minimumreport only (SU)all yearUMP1
pHinstantaneous maximumreport only (SU)all yearUMP1

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/WY0020320 · MCP: https://passage-data.com/mcp