Passage Data · Check a report · Use it from your AI

NPD Management LLC

Subdividers And Developers, Bothell, Washington. NPDES permit WA0991044, in force until Dec 31, 2030. Last 12 months: no values over a limit, 2 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: outfall 002 form MM monthly (6 values), outfall MP2 form MM monthly (2 values)
Last report on file: August 2026

Limits in force (8)

Parameter	Statistic	Limit	Months	Outfall
Turbidity	daily maximum	≤ 50 NTU	all year	002
pH	daily minimum	≥ 6.5 SU	all year	002
pH	daily maximum	≤ 8.5 SU	all year	002
Arsenic, dissolved [as As]	daily maximum	report only (ug/L) (alert, not enforceable)	all year	002
Arsenic, total [as As]	daily maximum	report only (ug/L) (alert, not enforceable)	all year	002
Iron, total [as Fe]	daily maximum	report only (ug/L) (alert, not enforceable)	all year	002
Iron, total [as Fe]	daily maximum	report only (ug/L) (alert, not enforceable)	all year	MP2
Flow	daily maximum	report only (gal/d) (alert, not enforceable)	all year	MP2

How strict are these limits?

pH, daily minimum at least 6.5 SU — stricter than 74% of 78 other minor industrial and other permits in Washington; 23% have the same limit
pH, daily maximum 8.5 SU — stricter than 74% of 78 other minor industrial and other permits in Washington; 26% have the same limit
Turbidity, daily maximum 50 NTU — stricter than 35% of 298 other minor industrial and other permits nationwide; 41% have the same limit

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

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WA0991044 · MCP: https://passage-data.com/mcp