US DEPT OF THE ARMY

NPDES permit IA0022144 · Major FEDERAL · effective, expires 2031-01-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

7values over a limit
6required values missing, on 2 form(s)
0of 97 forms filed late

Last period with anything received: 2026-07-31. Most often over: E. coli (3), Nitrogen, ammonia total [as N] (2), Chloride [as Cl] (2).

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among IA permits in EPA's filings — check your permit).

Limits in force (258)

OutfallParameterStatisticLimitMonths
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9.5 SU all year
001Chlorine, total residual30DA AVG <= .053 mg/L all year
001Chlorine, total residualDAILY MX <= .053 mg/L all year
001Chlorine, total residual30DA AVG <= .004 lb/d all year
001Chlorine, total residualDAILY MX <= .004 lb/d all year
013Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
013BOD, 5-day, 20 deg. C30DA AVG report only all year
013BOD, 5-day, 20 deg. CDAILY MX report only all year
013BOD, 5-day, 20 deg. C30DA AVG report only all year
013BOD, 5-day, 20 deg. CDAILY MX report only all year
013pHDAILY MN >= 6.5 SU all year
013pHDAILY MX <= 9 SU all year
013pH30DA AVG report only all year
013pHDAILY MX report only all year
013Solids, total suspended30DA AVG <= 30 mg/L all year
013Solids, total suspendedDAILY MX <= 45 mg/L all year
013Solids, total suspended30DA AVG <= 72 lb/d all year
013Solids, total suspendedDAILY MX <= 108 lb/d all year
013Solids, total suspended30DA AVG report only all year
013Solids, total suspendedDAILY MX report only all year
013Solids, total suspended30DA AVG report only all year
013Solids, total suspendedDAILY MX report only all year
013Nitrogen, total [as N]30DA AVG report only all year
013Nitrogen, total [as N]DAILY MX report only all year
013Nitrogen, total [as N]30DA AVG report only all year
013Nitrogen, total [as N]DAILY MX report only all year
013Nitrogen, ammonia total [as N]30DA AVG <= 3.4 mg/L Jan
013Nitrogen, ammonia total [as N]30DA AVG <= 1.6 mg/L Oct
013Nitrogen, ammonia total [as N]30DA AVG <= 1.5 mg/L Apr
013Nitrogen, ammonia total [as N]30DA AVG <= 4 mg/L Feb
013Nitrogen, ammonia total [as N]30DA AVG <= 1.1 mg/L Sep
013Nitrogen, ammonia total [as N]30DA AVG <= 2.3 mg/L Nov
013Nitrogen, ammonia total [as N]30DA AVG <= 1.3 mg/L Jun
013Nitrogen, ammonia total [as N]30DA AVG <= 1 mg/L Aug
013Nitrogen, ammonia total [as N]30DA AVG <= 3.4 mg/L Mar
013Nitrogen, ammonia total [as N]30DA AVG <= 2.5 mg/L Dec
013Nitrogen, ammonia total [as N]30DA AVG <= 1.7 mg/L May
013Nitrogen, ammonia total [as N]30DA AVG <= 1 mg/L Jul
013Nitrogen, ammonia total [as N]DAILY MX <= 15.2 mg/L Jan
013Nitrogen, ammonia total [as N]DAILY MX <= 15.7 mg/L Oct
013Nitrogen, ammonia total [as N]DAILY MX <= 15.7 mg/L Apr
013Nitrogen, ammonia total [as N]DAILY MX <= 14.2 mg/L Feb
013Nitrogen, ammonia total [as N]DAILY MX <= 16.5 mg/L Sep
013Nitrogen, ammonia total [as N]DAILY MX <= 14.7 mg/L Nov
013Nitrogen, ammonia total [as N]DAILY MX <= 14.4 mg/L Jun
013Nitrogen, ammonia total [as N]DAILY MX <= 16.5 mg/L Aug
013Nitrogen, ammonia total [as N]DAILY MX <= 14.7 mg/L Mar
013Nitrogen, ammonia total [as N]DAILY MX <= 16 mg/L Dec
013Nitrogen, ammonia total [as N]DAILY MX <= 15.2 mg/L May
013Nitrogen, ammonia total [as N]DAILY MX <= 17.6 mg/L Jul
013Nitrogen, ammonia total [as N]30DA AVG <= 8.2 lb/d Jan
013Nitrogen, ammonia total [as N]30DA AVG <= 3.7 lb/d Oct
013Nitrogen, ammonia total [as N]30DA AVG <= 3.6 lb/d Apr
013Nitrogen, ammonia total [as N]30DA AVG <= 9.5 lb/d Feb
013Nitrogen, ammonia total [as N]30DA AVG <= 2.5 lb/d Sep
013Nitrogen, ammonia total [as N]30DA AVG <= 5.6 lb/d Nov
013Nitrogen, ammonia total [as N]30DA AVG <= 3.1 lb/d Jun
013Nitrogen, ammonia total [as N]30DA AVG <= 2.3 lb/d Aug
013Nitrogen, ammonia total [as N]30DA AVG <= 8.2 lb/d Mar
013Nitrogen, ammonia total [as N]30DA AVG <= 5.9 lb/d Dec
013Nitrogen, ammonia total [as N]30DA AVG <= 4.2 lb/d May
013Nitrogen, ammonia total [as N]30DA AVG <= 2.4 lb/d Jul
013Nitrogen, ammonia total [as N]DAILY MX <= 36.4 lb/d Jan
013Nitrogen, ammonia total [as N]DAILY MX <= 37.6 lb/d Oct
013Nitrogen, ammonia total [as N]DAILY MX <= 37.6 lb/d Apr
013Nitrogen, ammonia total [as N]DAILY MX <= 34 lb/d Feb
013Nitrogen, ammonia total [as N]DAILY MX <= 39.5 lb/d Sep
013Nitrogen, ammonia total [as N]DAILY MX <= 35.2 lb/d Nov
013Nitrogen, ammonia total [as N]DAILY MX <= 34.6 lb/d Jun
013Nitrogen, ammonia total [as N]DAILY MX <= 38.8 lb/d Aug
013Nitrogen, ammonia total [as N]DAILY MX <= 35.2 lb/d Mar
013Nitrogen, ammonia total [as N]DAILY MX <= 38.2 lb/d Dec
013Nitrogen, ammonia total [as N]DAILY MX <= 36.4 lb/d May
013Nitrogen, ammonia total [as N]DAILY MX <= 42.1 lb/d Jul
013Phosphorus, total [as P]30DA AVG report only all year
013Phosphorus, total [as P]DAILY MX report only all year
013Phosphorus, total [as P]30DA AVG report only all year
013Phosphorus, total [as P]DAILY MX report only all year
013Chloride [as Cl]30DA AVG <= 389 mg/L all year
013Chloride [as Cl]DAILY MX <= 629 mg/L all year
013Chloride [as Cl]30DA AVG <= 930 lb/d all year
013Chloride [as Cl]DAILY MX <= 1505 lb/d all year
013Cadmium, total [as Cd]30DA AVG <= .0014 mg/L all year
013Cadmium, total [as Cd]DAILY MX <= .0136 mg/L all year
013Cadmium, total [as Cd]30DA AVG <= .00329 lb/d all year
013Cadmium, total [as Cd]DAILY MX <= .0326 lb/d all year
013Nickel, total [as Ni]30DA AVG <= .0938 mg/L all year
013Nickel, total [as Ni]DAILY MX <= .843 mg/L all year
013Nickel, total [as Ni]30DA AVG <= .224 lb/d all year
013Nickel, total [as Ni]DAILY MX <= 2.02 lb/d all year
013Silver, total [as Ag]30DA AVG <= .012 mg/L all year
013Silver, total [as Ag]DAILY MX <= .012 mg/L all year
013Silver, total [as Ag]30DA AVG <= .03 lb/d all year
013Silver, total [as Ag]DAILY MX <= .03 lb/d all year
013Aluminum, total [as Al]30DA AVG <= .89 mg/L all year
013Aluminum, total [as Al]DAILY MX <= 2.5 mg/L all year
013Aluminum, total [as Al]30DA AVG <= 2.13 lb/d all year
013Aluminum, total [as Al]DAILY MX <= 5.98 lb/d all year
013Selenium, total [as Se]30DA AVG <= .005 mg/L all year
013Selenium, total [as Se]DAILY MX <= .019 mg/L all year
013Selenium, total [as Se]30DA AVG <= .012 lb/d all year
013Selenium, total [as Se]DAILY MX <= .046 lb/d all year
013RDX+HMX30DA AVG <= .75 mg/L all year
013RDX+HMXDAILY MX <= 2.25 mg/L all year
013RDX+HMX30DA AVG <= 39.54 lb/d all year
013RDX+HMXDAILY MX <= 39.54 lb/d all year
013E. coliGEO MEAN <= 630 #/100mL Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
0132,4-Dinitroanisole30DA AVG <= .18 mg/L all year
0132,4-DinitroanisoleDAILY MX <= .68 mg/L all year
0132,4-Dinitroanisole30DA AVG <= 25.49 lb/d all year
0132,4-DinitroanisoleDAILY MX <= 25.49 lb/d all year
013Nitrotriazolone [NTO]30DA AVG <= .28 mg/L all year
013Nitrotriazolone [NTO]DAILY MX <= 1.1 mg/L all year
013Nitrotriazolone [NTO]30DA AVG <= 17.35 lb/d all year
013Nitrotriazolone [NTO]DAILY MX <= 17.35 lb/d all year
013Toxicity [acute], Ceriodaphnia dubiaDAILY MX <= 1 N=0;Y=1 all year
013Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX <= 1 N=0;Y=1 all year
013Nitroguanidine30DA AVG <= .22 mg/L all year
013NitroguanidineDAILY MX <= .38 mg/L all year
013Nitroguanidine30DA AVG <= .91 lb/d all year
013NitroguanidineDAILY MX <= .91 lb/d all year
013BOD, carbonaceous [5 day, 20 C]30DA AVG <= 25 mg/L all year
013BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 40 mg/L all year
013BOD, carbonaceous [5 day, 20 C]30DA AVG <= 36 lb/d all year
013BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 29 lb/d all year
013Trinitrotoluene [TNT], total30DA AVG <= .33 mg/L all year
013Trinitrotoluene [TNT], totalDAILY MX <= .91 mg/L all year
013Trinitrotoluene [TNT], total30DA AVG <= 2.18 lb/d all year
013Trinitrotoluene [TNT], totalDAILY MX <= 2.18 lb/d all year
032pHDAILY MN >= 6 SU all year
032pHDAILY MX <= 9 SU all year
032RDX+HMX30DA AVG <= .75 mg/L all year
032RDX+HMXDAILY MX <= 2.25 mg/L all year
032RDX+HMX30DA AVG <= .58 lb/d all year
032RDX+HMXDAILY MX <= 1.53 lb/d all year
0322,4-Dinitroanisole30DA AVG <= .18 mg/L all year
0322,4-DinitroanisoleDAILY MX <= .68 mg/L all year
0322,4-Dinitroanisole30DA AVG <= .017 lb/d all year
0322,4-DinitroanisoleDAILY MX <= .063 lb/d all year
032Nitrotriazolone [NTO]30DA AVG <= .28 mg/L all year
032Nitrotriazolone [NTO]DAILY MX <= 1.1 mg/L all year
032Nitrotriazolone [NTO]30DA AVG <= .026 lb/d all year
032Nitrotriazolone [NTO]DAILY MX <= .102 lb/d all year
032Nitroguanidine30DA AVG <= .22 mg/L all year
032NitroguanidineDAILY MX <= .38 mg/L all year
032Nitroguanidine30DA AVG <= .02 lb/d all year
032NitroguanidineDAILY MX <= .035 lb/d all year
032Trinitrotoluene [TNT], total30DA AVG <= .33 mg/L all year
032Trinitrotoluene [TNT], totalDAILY MX <= .91 mg/L all year
032Trinitrotoluene [TNT], total30DA AVG <= .084 lb/d all year
032Trinitrotoluene [TNT], totalDAILY MX <= .084 lb/d all year
034pHDAILY MN >= 6 SU all year
034pHDAILY MX <= 9 SU all year
034Nitrogen, ammonia total [as N]30DA AVG <= 1.1 mg/L Jul
034Nitrogen, ammonia total [as N]30DA AVG <= 4.1 mg/L Feb
034Nitrogen, ammonia total [as N]30DA AVG <= 2.6 mg/L Dec
034Nitrogen, ammonia total [as N]30DA AVG <= 3.5 mg/L Jan
034Nitrogen, ammonia total [as N]30DA AVG <= 1.6 mg/L Apr
034Nitrogen, ammonia total [as N]30DA AVG <= 1.8 mg/L May
034Nitrogen, ammonia total [as N]30DA AVG <= 2.4 mg/L Nov
034Nitrogen, ammonia total [as N]30DA AVG <= 1.7 mg/L Oct
034Nitrogen, ammonia total [as N]30DA AVG <= 1.1 mg/L Sep
034Nitrogen, ammonia total [as N]30DA AVG <= 3.5 mg/L Mar
034Nitrogen, ammonia total [as N]30DA AVG <= 1 mg/L Aug
034Nitrogen, ammonia total [as N]30DA AVG <= 1.4 mg/L Jun
034Nitrogen, ammonia total [as N]DAILY MX <= 7.3 mg/L Jul
034Nitrogen, ammonia total [as N]DAILY MX <= 7.3 mg/L Feb
034Nitrogen, ammonia total [as N]DAILY MX <= 7.3 mg/L Dec
034Nitrogen, ammonia total [as N]DAILY MX <= 7.3 mg/L Jan
034Nitrogen, ammonia total [as N]DAILY MX <= 7.1 mg/L Apr
034Nitrogen, ammonia total [as N]DAILY MX <= 6.1 mg/L May
034Nitrogen, ammonia total [as N]DAILY MX <= 6.7 mg/L Nov
034Nitrogen, ammonia total [as N]DAILY MX <= 6.9 mg/L Oct
034Nitrogen, ammonia total [as N]DAILY MX <= 5.9 mg/L Sep
034Nitrogen, ammonia total [as N]DAILY MX <= 7.3 mg/L Mar
034Nitrogen, ammonia total [as N]DAILY MX <= 7.3 mg/L Aug
034Nitrogen, ammonia total [as N]DAILY MX <= 7.3 mg/L Jun
034Nitrogen, ammonia total [as N]30DA AVG <= .1 lb/d Jul
034Nitrogen, ammonia total [as N]30DA AVG <= .18 lb/d Feb
034Nitrogen, ammonia total [as N]30DA AVG <= .1 lb/d Dec
034Nitrogen, ammonia total [as N]30DA AVG <= .1 lb/d Jan
034Nitrogen, ammonia total [as N]30DA AVG <= .1 lb/d Apr
034Nitrogen, ammonia total [as N]30DA AVG <= .1 lb/d May
034Nitrogen, ammonia total [as N]30DA AVG <= .1 lb/d Nov
034Nitrogen, ammonia total [as N]30DA AVG <= .1 lb/d Oct
034Nitrogen, ammonia total [as N]30DA AVG <= .05 lb/d Sep
034Nitrogen, ammonia total [as N]30DA AVG <= .1 lb/d Mar
034Nitrogen, ammonia total [as N]30DA AVG <= .1 lb/d Aug
034Nitrogen, ammonia total [as N]30DA AVG <= .1 lb/d Jun
034Nitrogen, ammonia total [as N]DAILY MX <= .27 lb/d Jul
034Nitrogen, ammonia total [as N]DAILY MX <= .27 lb/d Feb
034Nitrogen, ammonia total [as N]DAILY MX <= .27 lb/d Dec
034Nitrogen, ammonia total [as N]DAILY MX <= .27 lb/d Jan
034Nitrogen, ammonia total [as N]DAILY MX <= .27 lb/d Apr
034Nitrogen, ammonia total [as N]DAILY MX <= .2 lb/d May
034Nitrogen, ammonia total [as N]DAILY MX <= .27 lb/d Nov
034Nitrogen, ammonia total [as N]DAILY MX <= .27 lb/d Oct
034Nitrogen, ammonia total [as N]DAILY MX <= .2 lb/d Sep
034Nitrogen, ammonia total [as N]DAILY MX <= .27 lb/d Mar
034Nitrogen, ammonia total [as N]DAILY MX <= .27 lb/d Aug
034Nitrogen, ammonia total [as N]DAILY MX <= .27 lb/d Jun
034Iron, total [as Fe]30DA AVG <= 1 mg/L all year
034Iron, total [as Fe]DAILY MX <= 1 mg/L all year
034Iron, total [as Fe]30DA AVG <= .038 lb/d all year
034Iron, total [as Fe]DAILY MX <= .038 lb/d all year
034RDX+HMX30DA AVG <= .75 mg/L all year
034RDX+HMXDAILY MX <= 2.25 mg/L all year
034RDX+HMX30DA AVG <= .58 lb/d all year
034RDX+HMXDAILY MX <= .62 lb/d all year
0342,4-Dinitroanisole30DA AVG <= .18 mg/L all year
0342,4-DinitroanisoleDAILY MX <= .68 mg/L all year
0342,4-Dinitroanisole30DA AVG <= .0068 lb/d all year
0342,4-DinitroanisoleDAILY MX <= .026 lb/d all year
034Nitrotriazolone [NTO]30DA AVG <= .28 mg/L all year
034Nitrotriazolone [NTO]DAILY MX <= 1.1 mg/L all year
034Nitrotriazolone [NTO]30DA AVG <= .011 lb/d all year
034Nitrotriazolone [NTO]DAILY MX <= .04 lb/d all year
034Nitroguanidine30DA AVG <= .22 mg/L all year
034NitroguanidineDAILY MX <= .38 mg/L all year
034Nitroguanidine30DA AVG <= .0083 lb/d all year
034NitroguanidineDAILY MX <= .014 lb/d all year
034Trinitrotoluene [TNT], total30DA AVG <= .33 mg/L all year
034Trinitrotoluene [TNT], totalDAILY MX <= .91 mg/L all year
034Trinitrotoluene [TNT], total30DA AVG <= .034 lb/d all year
034Trinitrotoluene [TNT], totalDAILY MX <= .034 lb/d all year
035pHDAILY MN >= 6 SU all year
035pHDAILY MX <= 9 SU all year
035RDX+HMX30DA AVG <= .75 mg/L all year
035RDX+HMXDAILY MX <= 2.25 mg/L all year
035RDX+HMX30DA AVG <= .369 lb/d all year
035RDX+HMXDAILY MX <= .369 lb/d all year
0352,4-Dinitroanisole30DA AVG <= .18 mg/L all year
0352,4-DinitroanisoleDAILY MX <= .68 mg/L all year
0352,4-Dinitroanisole30DA AVG <= .004 lb/d all year
0352,4-DinitroanisoleDAILY MX <= .015 lb/d all year
035Nitrotriazolone [NTO]30DA AVG <= .28 mg/L all year
035Nitrotriazolone [NTO]DAILY MX <= 1.1 mg/L all year
035Nitrotriazolone [NTO]30DA AVG <= .0062 lb/d all year
035Nitrotriazolone [NTO]DAILY MX <= .025 lb/d all year
035Nitroguanidine30DA AVG <= .22 mg/L all year
035NitroguanidineDAILY MX <= .38 mg/L all year
035Nitroguanidine30DA AVG <= .0049 lb/d all year
035NitroguanidineDAILY MX <= .008 lb/d all year
035Trinitrotoluene [TNT], total30DA AVG <= .33 mg/L all year
035Trinitrotoluene [TNT], totalDAILY MX <= .91 mg/L all year
035Trinitrotoluene [TNT], total30DA AVG <= .02 lb/d all year
035Trinitrotoluene [TNT], totalDAILY MX <= .02 lb/d all year
036pHDAILY MN >= 6.5 SU all year
036pHDAILY MX <= 9.5 SU all year
036Chlorine, total residual30DA AVG <= .051 mg/L all year
036Chlorine, total residualDAILY MX <= .053 mg/L all year
036Chlorine, total residual30DA AVG <= .003 lb/d all year
036Chlorine, total residualDAILY MX <= .003 lb/d all year
SUMSolids, total suspended30DA AVG <= 1.546 lb/d all year
SUMSolids, total suspendedDAILY MX <= 4.568 lb/d all year
SUMOil & Grease30DA AVG <= .615 lb/d all year
SUMOil & GreaseDAILY MX <= 1.933 lb/d 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