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Costco Wholesale Corp

Gasoline Service Stations, Oceanside, New York. NPDES permit NY0279935, in force until Feb 28, 2032. Last 12 months: over a limit 5 times (last March 2026), 28 required values missing, 3 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form M monthly (14 values)
Last report on file: September 2026
Oct 2024 – Sep 2025: 23 values over a limit, 14 required values missing, 4 of 12 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period ending	Parameter	Reported	Limit	Over by
January 2026	Benzene, daily maximum	5.2 ug/L	≤ 5 ug/L	4%
January 2026	Toluene, daily maximum	21 ug/L	≤ 5 ug/L	320%
January 2026	Xylene [mix of m+o+p], daily maximum	45 ug/L	≤ 15 ug/L	200%
February 2026	Oil & Grease, daily maximum	41 mg/L	≤ 15 mg/L	173%
March 2026	Xylene [mix of m+o+p], daily maximum	20 ug/L	≤ 15 ug/L	33%

Limits in force (14)

Parameter	Statistic	Limit	Months
Flow rate	daily maximum	≤ 750000 gal/d	all year
pH	minimum	≥ 6.5 SU	all year
pH	maximum	≤ 8.5 SU	all year
Oil & Grease	daily maximum	≤ 15 mg/L	all year
Fluorine	daily maximum	≤ 10 ug/L	all year
Toluene	daily maximum	≤ 5 ug/L	all year
Benzene	daily maximum	≤ 5 ug/L	all year
Chrysene	daily maximum	≤ 1 ug/L	all year
Ethylbenzene	daily maximum	≤ 5 ug/L	all year
Pyrene	daily maximum	≤ 1 ug/L	all year
Naphthalene	daily maximum	≤ 10 ug/L	all year
Trimethylbenzene	daily maximum	≤ 19 ug/L	all year
Xylene [mix of m+o+p]	daily maximum	≤ 15 ug/L	all year
n-Pentane	daily maximum	report only (mg/L)	all year

How strict are these limits?

Pyrene, daily maximum 1 ug/L — stricter than 95% of 48 other minor industrial and other permits nationwide; 4% have the same limit
Naphthalene, daily maximum 10 ug/L — stricter than 81% of 119 other minor industrial and other permits nationwide; 10% have the same limit
Chrysene, daily maximum 1 ug/L — stricter than 66% of 57 other minor industrial and other permits nationwide; 4% have the same limit

Cited limits by parameter: New York'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/NY0279935 · MCP: https://passage-data.com/mcp