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Ash Grove Cement Company

Lime, Portland, Oregon. NPDES permit OR0001601 expired Dec 31, 2014; its limits still apply. Last 12 months: no values over a limit, 6 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: form A monthly (1 value)
Last report on file: September 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 1 of 12 reports late

Limits in force (7)

Parameter	Statistic	Limit	Months
Temperature, water deg. centigrade	daily maximum	report only (deg C)	Jan, Feb, Mar, Apr, Nov, Dec
Solids, total suspended	monthly average	≤ 25 mg/L	Jan, Feb, Mar, Apr, Nov, Dec
Solids, total suspended	daily maximum	≤ 50 mg/L	Jan, Feb, Mar, Apr, Nov, Dec
Flow, in conduit or thru treatment plant	daily maximum	≤ 13000 gal/d	Jan, Feb, Mar, Apr, Nov, Dec
Flow, total	daily maximum	≤ 0 gal	May–Oct
pH, maximum	daily maximum	≤ 8.5 SU	Jan, Feb, Mar, Apr, Nov, Dec
pH, minimum	daily minimum	≥ 6.5 SU	Jan, Feb, Mar, Apr, Nov, Dec

How strict are these limits?

pH, maximum, daily maximum 8.5 SU — stricter than 88% of 104 other minor industrial and other permits nationwide; 12% have the same limit
Solids, total suspended, monthly average 25 mg/L — stricter than 47% of 48 other minor industrial and other permits in Oregon
Solids, total suspended, daily maximum 50 mg/L — stricter than 34% of 23 other minor industrial and other permits in Oregon; 9% have the same limit

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OR0001601 · MCP: https://passage-data.com/mcp