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Sitca LLC

Sanitary Services, Vashon, Washington. NPDES permit WA0991037 expired Apr 30, 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: form MM monthly (9 values), form QQ quarterly (2 values)
Last report on file
April 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 16 reports late

Limits in force (11)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 8 mg/Lall year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
1,1-Dichloroethylenedaily maximumreport only (ug/L) (alert, not enforceable)all year
trans-1,2-Dichloroethylenedaily maximum≤ 600 ug/Lall year
Vinyl chloridedaily maximum≤ 2 ug/Lall year
Total Petroleum Hydrocarbons - Dieseldaily maximumreport only (ug/L) (alert, not enforceable)all year
Flowdaily maximum≤ 63000 gal/dall year
cis-1,2-Dichloroethylenedaily maximumreport only (ug/L) (alert, not enforceable)all year
Trichloroethenedaily maximum≤ 5.7 ug/Lall year
Oil and grease visualdaily maximumreport only (N=0;Y=1) (alert, not enforceable)all year

How strict are these limits?

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

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/WA0991037 · MCP: https://passage-data.com/mcp