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Westchester County Dot

Airports, Flying Fields, & Services, White Plains, New York. NPDES permit NY0075132 expired Jan 31, 2024; its limits still apply. Last 12 months: over a limit 7 times (last July 2026), 5 of 67 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (6 values), outfall 003 form A monthly (6 values), outfall 004 form A monthly (6 values), outfall 007 form A monthly (6 values), outfall 010 form M monthly (6 values), outfall 001 form V quarterly, and 2 more forms
Last report on file
August 2026
Oct 2024 – Sep 2025
8 values over a limit, 2 required values missing, 8 of 72 reports late

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

Period endingOutfallParameterReportedLimitOver by
March 2026001BOD, carbonaceous [5 day, 20 C], daily maximum55.9 mg/L≤ 34 mg/L64%
March 2026003BOD, carbonaceous [5 day, 20 C], daily maximum43.7 mg/L≤ 34 mg/L29%
April 2026001BOD, carbonaceous [5 day, 20 C], daily maximum44.2 mg/L≤ 34 mg/L30%
May 2026001BOD, carbonaceous [5 day, 20 C], daily maximum45.3 mg/L≤ 34 mg/L33%
June 2026001BOD, carbonaceous [5 day, 20 C], daily maximum54.3 mg/L≤ 5 mg/L986%
June 2026004BOD, carbonaceous [5 day, 20 C], daily maximum6.6 mg/L≤ 5 mg/L32%
July 2026001BOD, carbonaceous [5 day, 20 C], daily maximum16.4 mg/L≤ 5 mg/L228%

Limits in force (59)

ParameterStatisticLimitMonthsOutfall
Flow ratedaily maximumreport only (gal/d)all year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Oil & Greasedaily maximum≤ 15 mg/Lall year001
Toluenedaily maximum≤ .033 mg/L (alert, not enforceable)all year001
Benzenedaily maximum≤ .033 mg/L (alert, not enforceable)all year001
Ethylbenzenedaily maximum≤ .1 mg/L (alert, not enforceable)all year001
Alkyl bensene sulfonates, linear [LAS]daily maximum≤ .1 mg/L (alert, not enforceable)all year001
Propylene glycol, totaldaily maximumreport only (mg/L)all year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 5 mg/LJun–Aug001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 34 mg/LJan, Feb, Mar, Apr, May, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 18 mg/LSep001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 28 mg/LOct001
Xylene [mix of m+o+p]daily maximum≤ .033 mg/L (alert, not enforceable)all year001
Flow ratedaily maximumreport only (gal/d)all year003
pHminimum≥ 6 SUall year003
pHmaximum≤ 9 SUall year003
Oil & Greasedaily maximum≤ 15 mg/Lall year003
Propylene glycol, totaldaily maximumreport only (mg/L)all year003
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 5 mg/LJun–Aug003
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 34 mg/LJan, Feb, Mar, Apr, May, Nov, Dec003
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 18 mg/LSep003
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 28 mg/LOct003
Flow ratedaily maximumreport only (gal/d)all year004
pHminimum≥ 6.5 SUall year004
pHmaximum≤ 8.5 SUall year004
Oil & Greasedaily maximum≤ 15 mg/Lall year004
Toluenedaily maximum≤ .033 mg/L (alert, not enforceable)all year004
Benzenedaily maximum≤ .033 mg/L (alert, not enforceable)all year004
Ethylbenzenedaily maximum≤ .1 mg/L (alert, not enforceable)all year004
Alkyl bensene sulfonates, linear [LAS]daily maximum≤ .1 mg/L (alert, not enforceable)all year004
Propylene glycol, totaldaily maximumreport only (mg/L)all year004
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 5 mg/LJun–Aug004
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 34 mg/LJan, Feb, Mar, Apr, May, Nov, Dec004
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 18 mg/LSep004
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 28 mg/LOct004
Xylene [mix of m+o+p]daily maximum≤ .033 mg/L (alert, not enforceable)all year004
Flow ratedaily maximumreport only (gal/d)all year007
pHminimum≥ 6.5 SUall year007
pHmaximum≤ 8.5 SUall year007
Oil & Greasedaily maximum≤ 15 mg/Lall year007
Toluenedaily maximum≤ .033 mg/L (alert, not enforceable)all year007
Benzenedaily maximum≤ .033 mg/L (alert, not enforceable)all year007
Ethylbenzenedaily maximum≤ .1 mg/L (alert, not enforceable)all year007
Propylene glycol, totaldaily maximumreport only (mg/L)all year007
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 5 mg/LJun–Aug007
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 34 mg/LJan, Feb, Mar, Apr, May, Nov, Dec007
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 18 mg/LSep007
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 28 mg/LOct007
Xylene [mix of m+o+p]daily maximum≤ .033 mg/L (alert, not enforceable)all year007
Flow ratedaily maximumreport only (gal/d)all year010
pHminimum≥ 6 SUall year010
pHmaximum≤ 9 SUall year010
Oil & Greasedaily maximum≤ 15 mg/Lall year010
Propylene glycol, totaldaily maximumreport only (mg/L)all year010
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 5 mg/LJun–Aug010
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 18 mg/LSep010
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 34 mg/LJan, Feb, Mar, Apr, May, Nov, Dec010
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 28 mg/LOct010

How strict are these limits?

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

Same industry: the 7 Transportation by Air permits in New York.

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Your permit document is the final word. As JSON: /api/v1/permits/NY0075132 · MCP: https://passage-data.com/mcp