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Hernshaw Partners, LLC

Miscellaneous Nonmetallic Minerals, Wharncliffe, West Virginia. NPDES permit WV0117528, in force until Aug 18, 2027. Last 12 months: no values over a limit, 2 of 15 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (6 values), form B quarterly (2 values), form C twice a year (2 values)
Renewal application due
Feb 19, 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 18 reports late

Limits in force (10)

ParameterStatisticLimitMonths
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Selenium, total recoverablemonthly averagereport only (mg/L)all year
Selenium, total recoverabledaily maximumreport only (mg/L)all year
Copper, total recoverablemonthly averagereport only (mg/L)all year
Copper, total recoverabledaily maximumreport only (mg/L)all year
Selenium, dry weightmonthly averagereport only (mg/kg)all year
Selenium, dry weightdaily maximum≤ 8 mg/kgall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year

How strict are these limits?

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

Same industry: the 64 Mining and Quarrying of Nonmetallic Minerals permits in West Virginia.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WV0117528 · MCP: https://passage-data.com/mcp