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Western Wood Preserving Company

Wood Preserving, Sumner, Washington. NPDES permit WA0040738 expired Aug 31, 2026; its terms still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form MM monthly (8 values), outfall 002 form MM monthly (4 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 2 of 24 reports late

Limits in force (12)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly averagereport only (mg/L) (alert, not enforceable)all year001
Chromium, total [as Cr]monthly averagereport only (ug/L) (alert, not enforceable)all year001
Copper, total [as Cu]monthly averagereport only (ug/L) (alert, not enforceable)all year001
Flowaveragereport only (gal/min) (alert, not enforceable)all year001
Flowdaily maximumreport only (gal/min) (alert, not enforceable)all year001
Chemical oxygen demand [COD]monthly averagereport only (mg/L) (alert, not enforceable)all year001
pHdaily minimum≥ 6 SUall year002
pHdaily maximum≤ 9 SUall year002
Flowaveragereport only (gal/min) (alert, not enforceable)all year002
Flowdaily maximumreport only (gal/min) (alert, not enforceable)all year002

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

Same industry: the 11 Lumber and Wood Products permits in Washington.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WA0040738 · MCP: https://passage-data.com/mcp