Passage Data · Check a report · Use it from your AI

Westmoreland Haystack Mining LLC

Industrial or other facility, (Unknown City), Wyoming. NPDES permit WY0096873, in force until Jul 31, 2027. Last 12 months: no values over a limit, 7 of 71 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form CM quarterly (15 values), outfall 002 form CM quarterly (15 values), outfall 003 form CM quarterly (15 values), outfall 004 form CM quarterly (15 values), outfall 005 form CM quarterly (15 values), outfall SUM form CM yearly (2 values), and 1 more form
Renewal application due
Feb 1, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 2 of 84 reports late

Limits in force (79)

ParameterStatisticLimitMonthsOutfall
pHinstantaneous minimum≥ 6.5 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 35 mg/Lall year001
Solids, total suspendeddaily maximum≤ 70 mg/Lall year001
Solids, total suspendedinstantaneous maximum≤ 90 mg/Lall year001
Solids, settleableinstantaneous maximum≤ .5 mL/Lall year001
Iron, total [as Fe]monthly average≤ 3 mg/Lall year001
Iron, total [as Fe]daily maximum≤ 6 mg/Lall year001
Iron, total [as Fe]instantaneous maximum≤ 9 mg/Lall year001
Iron, dissolved [as Fe]instantaneous maximum≤ 1000 ug/Lall year001
Manganese, dissolved [as Mn]instantaneous maximum≤ 1462 ug/Lall year001
Durationmonthly totalreport only (d/mo)all year001
Solids, total dissolvedmonthly averagereport only (mg/L)all year001
Flowmonthly averagereport only (MGD)all year001
Flowdaily maximumreport only (MGD)all year001
pHinstantaneous minimum≥ 6.5 SUall year002
pHinstantaneous maximum≤ 9 SUall year002
Solids, total suspendedmonthly average≤ 35 mg/Lall year002
Solids, total suspendeddaily maximum≤ 70 mg/Lall year002
Solids, total suspendedinstantaneous maximum≤ 90 mg/Lall year002
Solids, settleableinstantaneous maximum≤ .5 mL/Lall year002
Iron, total [as Fe]monthly average≤ 3 mg/Lall year002
Iron, total [as Fe]daily maximum≤ 6 mg/Lall year002
Iron, total [as Fe]instantaneous maximum≤ 9 mg/Lall year002
Iron, dissolved [as Fe]instantaneous maximum≤ 1000 ug/Lall year002
Manganese, dissolved [as Mn]instantaneous maximum≤ 1462 ug/Lall year002
Durationmonthly totalreport only (d/mo)all year002
Solids, total dissolvedmonthly averagereport only (mg/L)all year002
Flowmonthly averagereport only (MGD)all year002
Flowdaily maximumreport only (MGD)all year002
pHinstantaneous minimum≥ 6.5 SUall year003
pHinstantaneous maximum≤ 9 SUall year003
Solids, total suspendedmonthly average≤ 35 mg/Lall year003
Solids, total suspendeddaily maximum≤ 70 mg/Lall year003
Solids, total suspendedinstantaneous maximum≤ 90 mg/Lall year003
Solids, settleableinstantaneous maximum≤ .5 mL/Lall year003
Iron, total [as Fe]monthly average≤ 3 mg/Lall year003
Iron, total [as Fe]daily maximum≤ 6 mg/Lall year003
Iron, total [as Fe]instantaneous maximum≤ 9 mg/Lall year003
Iron, dissolved [as Fe]instantaneous maximum≤ 1000 ug/Lall year003
Manganese, dissolved [as Mn]instantaneous maximum≤ 1462 ug/Lall year003
Durationmonthly totalreport only (d/mo)all year003
Solids, total dissolvedmonthly averagereport only (mg/L)all year003
Flowmonthly averagereport only (MGD)all year003
Flowdaily maximumreport only (MGD)all year003
pHinstantaneous minimum≥ 6.5 SUall year004
pHinstantaneous maximum≤ 9 SUall year004
Solids, total suspendedmonthly average≤ 35 mg/Lall year004
Solids, total suspendeddaily maximum≤ 70 mg/Lall year004
Solids, total suspendedinstantaneous maximum≤ 90 mg/Lall year004
Solids, settleableinstantaneous maximum≤ .5 mL/Lall year004
Iron, total [as Fe]monthly average≤ 3 mg/Lall year004
Iron, total [as Fe]daily maximum≤ 6 mg/Lall year004
Iron, total [as Fe]instantaneous maximum≤ 9 mg/Lall year004
Iron, dissolved [as Fe]instantaneous maximum≤ 1000 ug/Lall year004
Manganese, dissolved [as Mn]instantaneous maximum≤ 1462 ug/Lall year004
Durationmonthly totalreport only (d/mo)all year004
Solids, total dissolvedmonthly averagereport only (mg/L)all year004
Flowmonthly averagereport only (MGD)all year004
Flowdaily maximumreport only (MGD)all year004
pHinstantaneous minimum≥ 6.5 SUall year005
pHinstantaneous maximum≤ 9 SUall year005
Solids, total suspendedmonthly average≤ 35 mg/Lall year005
Solids, total suspendeddaily maximum≤ 70 mg/Lall year005
Solids, total suspendedinstantaneous maximum≤ 90 mg/Lall year005
Solids, settleableinstantaneous maximum≤ .5 mL/Lall year005
Iron, total [as Fe]monthly average≤ 3 mg/Lall year005
Iron, total [as Fe]daily maximum≤ 6 mg/Lall year005
Iron, total [as Fe]instantaneous maximum≤ 9 mg/Lall year005
Iron, dissolved [as Fe]instantaneous maximum≤ 1000 ug/Lall year005
Manganese, dissolved [as Mn]instantaneous maximum≤ 1462 ug/Lall year005
Durationmonthly totalreport only (d/mo)all year005
Solids, total dissolvedmonthly averagereport only (mg/L)all year005
Flowmonthly averagereport only (MGD)all year005
Flowdaily maximumreport only (MGD)all year005
Solids, total dissolvedannual average≤ 366 ton/yrall yearSUM
Solids, total dissolvedannual average≤ 366 ton/yrall yearSUM
Solids, total dissolvedmonthly averagereport only (ton/mo)all yearSUM
Solids, total dissolvedmonthly averagereport only (ton/mo)all yearSUM

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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WY0096873 · MCP: https://passage-data.com/mcp