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WestRock CP, LLC

Paperboard Mills, Tacoma, Washington. NPDES permit WA0000850, in force until Jun 30, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form MM monthly (9 values)
Renewal application due
Jan 1, 2027 · 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, 0 required values missing, 0 of 117 reports late

Limits in force (9)

ParameterStatisticLimitMonths
Turbiditymonthly average≤ 21 NTU (alert, not enforceable)all year
pHdaily minimum≥ 5.8 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/L (alert, not enforceable)all year
Copper, total [as Cu]monthly average≤ 14 ug/L (alert, not enforceable)all year
Zinc, total [as Zn]monthly average≤ 117 ug/L (alert, not enforceable)all year
Free Oil Visual Sheensingle readingreport only (N=0;Y=1) (alert, not enforceable)all year
Flowmonthly averagereport only (MGD) (alert, not enforceable)all year
Flowmonthly averagereport only (MGD) (alert, not enforceable)all year

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

Same industry: the 13 Paper and Allied Products permits in Washington.

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/WA0000850 · MCP: https://passage-data.com/mcp