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Harford County Public Schools Hickory Annex

Elementary And Secondary Schools, Bel Air, Maryland. NPDES permit MD0070696, in force until Aug 31, 2029. Last 12 months: over a limit once (last March 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form A1 quarterly (10 values)
Last report on file: June 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 1 of 4 reports late

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

Period ending	Parameter	Reported	Limit	Over by
March 2026	Oil & Grease, daily maximum	17 mg/L	≤ 15 mg/L	13%

Limits in force (10)

Parameter	Statistic	Limit	Months
Solids, total suspended	quarterly average	≤ 30 mg/L	all year
Solids, total suspended	quarterly average	≤ 30 mg/L	all year
Solids, total suspended	daily maximum	≤ 60 mg/L	all year
Solids, total suspended	daily maximum	≤ 60 mg/L	all year
Oil & Grease	daily maximum	≤ 15 mg/L	all year
Oil & Grease	daily maximum	≤ 15 mg/L	all year
Flow	quarterly average	report only (MGD)	all year
Flow	quarterly average	report only (MGD)	all year
Flow	daily maximum	report only (MGD)	all year
Flow	daily maximum	report only (MGD)	all year

How strict are these limits?

Solids, total suspended, quarterly average 30 mg/L — stricter than 29% of 74 other minor industrial and other permits nationwide; 41% have the same limit
Oil & Grease, daily maximum 15 mg/L — stricter than 13% of 2,554 other minor industrial and other permits nationwide; 78% have the same limit
Solids, total suspended, daily maximum 60 mg/L — stricter than 11% of 52 other minor industrial and other permits in Maryland; 29% have the same limit

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

Same industry: the 20 Educational Services permits in Maryland.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MD0070696 · MCP: https://passage-data.com/mcp