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Seneca Sawmill Company

Sawmills And Planing Mills, General, Eugene, Oregon. NPDES permit OR0022985 expired Aug 31, 2011; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: form A monthly (8 values)
Last report on file: September 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (9)

Parameter	Statistic	Limit	Months
Temperature, water deg. centigrade	daily maximum	report only (deg C)	all year
Temperature, water deg. centigrade	weekly average	≤ 18 deg C	all year
pH	daily minimum	≥ 6.5 SU	all year
pH	daily maximum	≤ 8.5 SU	all year
Solids, total suspended	monthly average	≤ 50 mg/L	May–Oct
Solids, total suspended	monthly average	≤ 130 mg/L	Jan, Feb, Mar, Apr, Nov, Dec
Oil & Grease	daily maximum	≤ 10 mg/L	all year
Floating solids, waste or visible foam-visual	value	≤ 0 N=0;Y=1	all year
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year

How strict are these limits?

pH, daily minimum at least 6.5 SU — stricter than 62% of 95 other minor industrial and other permits in Oregon; 37% have the same limit
pH, daily maximum 8.5 SU — stricter than 62% of 94 other minor industrial and other permits in Oregon; 37% have the same limit
Oil & Grease, daily maximum 10 mg/L — stricter than 29% of 27 other minor industrial and other permits in Oregon; 70% have the same limit

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

Same industry: the 25 Lumber and Wood Products permits in Oregon.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OR0022985 · MCP: https://passage-data.com/mcp