Spring Garden Steam Plant

NPDES permit MD0061930 · Minor NON-POTW · effective, expires 2028-07-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

EPA's record, 2025-09-01 to 2026-08-31

1values over a limit
0required values missing, on 0 form(s)
2of 4 forms filed late

Last period with anything received: 2026-06-30. Most often over: Temp. diff. between up/down stream deg. F (1).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (24)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]INST MIN >= 5 mg/L all year
001Oxygen, dissolved [DO]INST MIN >= 5 mg/L all year
001pHMINIMUM >= 6.5 SU all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Hardness, total [as CaCO3]MO AVG report only all year
001Hardness, total [as CaCO3]MO AVG report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Copper, total [as Cu]MX MO AV <= .03 mg/L all year
001Copper, total [as Cu]MX MO AV <= .03 mg/L all year
001Copper, total [as Cu]DAILY MX <= .044 mg/L all year
001Copper, total [as Cu]DAILY MX <= .044 mg/L all year
001Temp. diff. between up/down stream deg. FDAILY MX <= 0 deg F Jun, Jul, Aug, Sep
001Temp. diff. between up/down stream deg. FDAILY MX <= 0 deg F Jun, Jul, Aug, Sep
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMX MO AV <= .011 mg/L all year
001Chlorine, total residualMX MO AV <= .011 mg/L all year
001Chlorine, total residualDAILY MX <= .019 mg/L all year
001Chlorine, total residualDAILY MX <= .019 mg/L all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states