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Dyer Excavation, Inc.

Industrial or other facility, Harrison, Maine. NPDES permit MEU508124 expired Apr 30, 2022; its limits still apply. Last 12 months: over a limit 10 times (last September 2026), 3 of 24 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 002 form A monthly (7 values), outfall MW1 form A monthly (8 values), outfall MW2 form A monthly (8 values), outfall MW3 form A monthly (8 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
10 values over a limit, 2 required values missing, 7 of 24 reports late

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

Period endingOutfallParameterReportedLimitOver by
October 2025002Flow, in conduit or thru treatment plant, daily maximum13000 gal/d≤ 6500 gal/d100%
November 2025002Flow, in conduit or thru treatment plant, daily maximum13000 gal/d≤ 6500 gal/d100%
April 2026002Flow, in conduit or thru treatment plant, daily maximum13000 gal/d≤ 6500 gal/d100%
May 2026002Flow, in conduit or thru treatment plant, daily maximum10000 gal/d≤ 6500 gal/d54%
June 2026002Flow, in conduit or thru treatment plant, daily maximum10000 gal/d≤ 6500 gal/d54%
June 2026MW1Nitrogen, nitrate total [as N], daily maximum12 mg/L≤ 10 mg/L20%
June 2026MW3Nitrogen, nitrate total [as N], daily maximum11 mg/L≤ 10 mg/L10%
July 2026002Flow, in conduit or thru treatment plant, daily maximum8500 gal/d≤ 6500 gal/d31%
August 2026002Flow, in conduit or thru treatment plant, daily maximum10000 gal/d≤ 6500 gal/d54%
September 2026002Flow, in conduit or thru treatment plant, daily maximum10500 gal/d≤ 6500 gal/d62%

Limits in force (33)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cdaily maximum≤ 250 mg/LMar, Jun, Sep, Dec002
pHminimum≥ 6 SUMar, Jun, Sep, Dec002
pHmaximum≤ 9 SUMar, Jun, Sep, Dec002
Solids, total suspendeddaily maximum≤ 250 mg/LMar, Jun, Sep, Dec002
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec002
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year002
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year002
Flow, in conduit or thru treatment plantdaily maximum≤ 6500 gal/dall year002
Flow, in conduit or thru treatment plantdaily maximum≤ 11700 gal/dall year002
Temperature, water deg. centigradedaily maximumreport only (deg C)Mar, Jun, Sep, DecMW1
Specific conductancedaily maximumreport only (umho/cm)Mar, Jun, Sep, DecMW1
Oxygen, dissolved [DO]daily maximumreport only (mg/L)Mar, Jun, Sep, DecMW1
pHminimum≥ 6 SUMar, Jun, Sep, DecMW1
pHmaximum≤ 9 SUMar, Jun, Sep, DecMW1
Solids, total suspendeddaily maximumreport only (mg/L)Mar, Jun, Sep, DecMW1
Nitrogen, nitrate total [as N]daily maximum≤ 10 mg/LMar, Jun, Sep, DecMW1
Depth to water level ft below landsurfacedaily maximumreport only (in)Mar, Jun, Sep, DecMW1
Temperature, water deg. centigradedaily maximumreport only (deg C)Mar, Jun, Sep, DecMW2
Specific conductancedaily maximumreport only (umho/cm)Mar, Jun, Sep, DecMW2
Oxygen, dissolved [DO]daily maximumreport only (mg/L)Mar, Jun, Sep, DecMW2
pHminimum≥ 6 SUMar, Jun, Sep, DecMW2
pHmaximum≤ 9 SUMar, Jun, Sep, DecMW2
Solids, total suspendeddaily maximumreport only (mg/L)Mar, Jun, Sep, DecMW2
Nitrogen, nitrate total [as N]daily maximum≤ 10 mg/LMar, Jun, Sep, DecMW2
Depth to water level ft below landsurfacedaily maximumreport only (in)Mar, Jun, Sep, DecMW2
Temperature, water deg. centigradedaily maximumreport only (deg C)Mar, Jun, Sep, DecMW3
Specific conductancedaily maximumreport only (umho/cm)Mar, Jun, Sep, DecMW3
Oxygen, dissolved [DO]daily maximumreport only (mg/L)Mar, Jun, Sep, DecMW3
pHminimum≥ 6 SUMar, Jun, Sep, DecMW3
pHmaximum≤ 9 SUMar, Jun, Sep, DecMW3
Solids, total suspendeddaily maximumreport only (mg/L)Mar, Jun, Sep, DecMW3
Nitrogen, nitrate total [as N]daily maximum≤ 10 mg/LMar, Jun, Sep, DecMW3
Depth to water level ft below landsurfacedaily maximumreport only (in)Mar, Jun, Sep, DecMW3

Cited limits by parameter: Maine'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/MEU508124 · MCP: https://passage-data.com/mcp