U.S. Department of Agriculture, Agricultural Research Service

NPDES permit MD0020842 · Minor FEDERAL · administratively continued, expires 2021-08-31 · 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.

This permit expired on 2021-08-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

25values over a limit
1required values missing, on 1 form(s)
2of 23 forms filed late

Last period with anything received: 2026-07-31. Most often over: Copper, total recoverable (16), Solids, total suspended (5), Phosphorus, total [as P] (3).

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 (77)

OutfallParameterStatisticLimitMonths
001Nitrogen, total [as N]ANNL TOT report only all year
001Phosphorus, total [as P]ANNL TOT report only all year
001Flow, totalANNL TOT report only all year
002Oxygen, dissolved [DO]INST MIN >= 5 mg/L all year
002BOD, 5-day, 20 deg. CMX MO AV <= 17 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
002BOD, 5-day, 20 deg. CMX MO AV <= 30 mg/L Jan, Feb, Mar, Nov, Dec
002BOD, 5-day, 20 deg. CMX WK AV <= 26 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
002BOD, 5-day, 20 deg. CMX WK AV <= 45 mg/L Jan, Feb, Mar, Nov, Dec
002BOD, 5-day, 20 deg. CMX MO AV <= 88 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
002BOD, 5-day, 20 deg. CMX MO AV <= 160 lb/d Jan, Feb, Mar, Nov, Dec
002BOD, 5-day, 20 deg. CMX WK AV <= 130 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
002BOD, 5-day, 20 deg. CANNL MAX <= 44348 lb/yr all year
002BOD, 5-day, 20 deg. CMX WK AV <= 230 lb/d Jan, Feb, Mar, Nov, Dec
002pHMINIMUM >= 6.5 SU all year
002pHMAXIMUM <= 8.5 SU all year
002Solids, total suspendedMX MO AV <= 30 mg/L Jan, Feb, Mar, Nov, Dec
002Solids, total suspendedMX MO AV <= 17 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
002Solids, total suspendedMX WK AV <= 45 mg/L Jan, Feb, Mar, Nov, Dec
002Solids, total suspendedMX WK AV <= 26 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
002Solids, total suspendedMX MO AV <= 160 lb/d Jan, Feb, Mar, Nov, Dec
002Solids, total suspendedMX MO AV <= 88 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
002Solids, total suspendedMX WK AV <= 230 lb/d Jan, Feb, Mar, Nov, Dec
002Solids, total suspendedCUM TOTL <= 20860 lb/yr Apr, May, Jun, Jul, Aug, Sep, Oct
002Solids, total suspendedMX WK AV <= 130 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
002Solids, total suspendedANNL MAX <= 44260 lb/yr all year
002Solids, total suspendedMO TOTAL report only all year
002Nitrogen, total [as N]MO AVG report only all year
002Nitrogen, total [as N]ANNL MAX <= 7553 lb/yr all year
002Nitrogen, total [as N]MO TOTAL <= 21 lb/d all year
002Nitrogen, total [as N]MO AVG report only all year
002Nitrogen, organic total [as N]MO AVG report only all year
002Nitrogen, organic total [as N]MO AVG report only all year
002Nitrogen, ammonia total [as N]MX MO AV <= 2.7 mg/L Jan, Feb, Mar, Nov, Dec
002Nitrogen, ammonia total [as N]MX MO AV <= 1.6 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MX DA AV <= 10 mg/L Jan, Feb, Mar, Nov, Dec
002Nitrogen, ammonia total [as N]MX DA AV <= 14 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MX MO AV <= 14 lb/d Jan, Feb, Mar, Nov, Dec
002Nitrogen, ammonia total [as N]MX MO AV <= 8.3 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MX DA AV <= 52 lb/d Jan, Feb, Mar, Nov, Dec
002Nitrogen, ammonia total [as N]MX DA AV <= 72 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
002Nitrite + Nitrate total [as N]MO AVG report only all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]MO TOTAL <= 1.5 lb/d all year
002Phosphorus, total [as P]ANNL MAX <= 566 lb/yr all year
002Phosphorus, total [as P]MO AVG report only all year
002Hardness, total [as CaCO3]VALUE report only all year
002Sulfate, dissolved [as SO4]VALUE report only all year
002Arsenic, total [as As]VALUE report only Dec
002Lead, total [as Pb]ANNL TOT report only Dec
002Nickel, total [as Ni]VALUE report only Dec
002Silver, total [as Ag]ANNL TOT report only Dec
002Zinc, total recoverableMO AVG report only all year
002Copper, total recoverableMX MO AV <= .0018 mg/L all year
002Copper, total recoverableMX MO AV <= .0092 lb/d all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Chlorine, total residualMAXIMUM <= .1 mg/L all year
002E. coliGX <= 126 MPN/100mL all year
002Heptachlor + Heptachlor EpoxideMO AVG report only all year
002Phosphorous, in total orthophosphateMO AVG report only all year
002Phosphorous, in total orthophosphateMO AVG report only all year
002Mercury, total [as Hg]ANNL TOT report only Dec
002Total toxic organics [TTO] [40 CFR413]ANNL TOT report only Dec
002Cyanide, total recoverableMO AVG report only all year
002Cyanide, total recoverableMO AVG report only all year
002Polychlorinated biphenyls [PCB] pg/LQRTR AVG report only Mar, Jun, Sep, Dec
002Polychlorinated biphenyls [PCB] pg/LQT report only Mar, Jun, Sep, Dec
002Polychlorinated biphenyls [PCB] pg/LCUM TOTL report only Mar, Jun, Sep, Dec
002Flow, totalMO TOTAL report only all year
002Chloride, dissolved [as Cl]MO AVG report only all year
101BOD, 5-day, 20 deg. CMX MO AV <= 70 mg/L all year
101pHMINIMUM >= 6.5 SU all year
101pHMAXIMUM <= 8.5 SU all year
101Solids, total suspendedMX MO AV <= 90 mg/L all year
101Flow, in conduit or thru treatment plantMO TOTAL report only all year
101Coliform, fecal generalMAXIMUM <= 200 MPN/100mL 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