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Alon Asphalt Company

Transportation Services, Edmonds, Washington. NPDES permit WA0031704 expired Sep 30, 2022; 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 MM monthly (10 values), form QQ quarterly (1 value)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 16 reports late

Limits in force (22)

ParameterStatisticLimitMonths
Temperature, water deg. centigradeaveragereport only (deg C) (alert, not enforceable)all year
Temperature, water deg. centigradeaveragereport only (deg C) (alert, not enforceable)all year
Temperature, water deg. centigradedaily maximumreport only (deg C) (alert, not enforceable)all year
Temperature, water deg. centigradedaily maximumreport only (deg C) (alert, not enforceable)all year
pHdaily minimum≥ 6 SUall year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
pHdaily maximum≤ 9 SUall year
Lead, total [as Pb]daily maximumreport only (ug/L) (alert, not enforceable)all year
Lead, total [as Pb]daily maximumreport only (ug/L) (alert, not enforceable)all year
Benzene, ethylbenzene, toluene, xylene combinationdaily maximum≤ 100 ug/Lall year
Benzene, ethylbenzene, toluene, xylene combinationdaily maximum≤ 100 ug/Lall year
Benzenedaily maximum≤ 5 ug/Lall year
Benzenedaily maximum≤ 5 ug/Lall year
Total Petroleum Hydrocarbons - Dieseldaily maximum≤ 500 ug/Lall year
Total Petroleum Hydrocarbons - Dieseldaily maximum≤ 500 ug/Lall year
Total Petroleum Hydrocarbons - Gasolinedaily maximum≤ 800 ug/Lall year
Total Petroleum Hydrocarbons - Gasolinedaily maximum≤ 800 ug/Lall year
Flowdaily maximum≤ 216000 gal/dall year
Flowdaily maximum≤ 216000 gal/dall year
Oil and grease visualdaily maximum≤ 0 N=0;Y=1all year
Oil and grease visualdaily maximum≤ 0 N=0;Y=1all 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/WA0031704 · MCP: https://passage-data.com/mcp