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Plastics Materials And Resins, major discharger, Seaford, Delaware. NPDES permit DE0000035 expired Mar 31, 2026; its limits still apply. Last 12 months: over a limit 2 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit |
|---|---|---|---|---|
| October 2025 | 005 | Chlorine, total residual, daily minimum | < 1.1 mg/L | ≥ 1 mg/L |
| May 2026 | 011 | pH, daily minimum | 5.8 SU | ≥ 6 SU |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | daily average | ≤ 15.3 mg/L | all year | 005 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 25.6 mg/L | all year | 005 |
| BOD, 5-day, 20 deg. C | daily average | ≤ 1.7 lb/d | all year | 005 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 2.9 lb/d | all year | 005 |
| pH | daily minimum | ≥ 6 SU | all year | 005 |
| pH | daily maximum | ≤ 9 SU | all year | 005 |
| Solids, total suspended | daily average | ≤ 17.19 mg/L | all year | 005 |
| Solids, total suspended | daily maximum | ≤ 32.61 mg/L | all year | 005 |
| Solids, total suspended | daily average | ≤ 1.92 lb/d | all year | 005 |
| Solids, total suspended | daily maximum | ≤ 3.64 lb/d | all year | 005 |
| Oil & Grease | daily average | ≤ 10 mg/L | all year | 005 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 005 |
| Oil & Grease | daily average | ≤ 19 lb/d | all year | 005 |
| Oil & Grease | daily maximum | ≤ 29 lb/d | all year | 005 |
| Nitrogen, total [as N] | daily average | report only (mg/L) | all year | 005 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 005 |
| Nitrogen, total [as N] | daily average | report only (lb/d) | all year | 005 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 005 |
| Nitrogen, organic total [as N] | daily average | report only (mg/L) | all year | 005 |
| Nitrogen, organic total [as N] | daily maximum | report only (mg/L) | all year | 005 |
| Nitrogen, organic total [as N] | daily average | report only (lb/d) | all year | 005 |
| Nitrogen, organic total [as N] | daily maximum | report only (lb/d) | all year | 005 |
| Nitrogen, ammonia total [as N] | daily average | report only (mg/L) | all year | 005 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 005 |
| Nitrogen, ammonia total [as N] | daily average | report only (lb/d) | all year | 005 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | 005 |
| Nitrogen, Kjeldahl, total [as N] | daily average | report only (mg/L) | all year | 005 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 005 |
| Nitrogen, Kjeldahl, total [as N] | daily average | report only (lb/d) | all year | 005 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (lb/d) | all year | 005 |
| Nitrite + Nitrate total [as N] | daily average | report only (mg/L) | all year | 005 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 005 |
| Nitrite + Nitrate total [as N] | daily average | report only (lb/d) | all year | 005 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (lb/d) | all year | 005 |
| Phosphate, ortho [as PO4] | daily average | report only (mg/L) | all year | 005 |
| Phosphate, ortho [as PO4] | daily maximum | report only (mg/L) | all year | 005 |
| Phosphate, ortho [as PO4] | daily average | report only (lb/d) | all year | 005 |
| Phosphate, ortho [as PO4] | daily maximum | report only (lb/d) | all year | 005 |
| Phosphorus, total [as P] | daily average | report only (mg/L) | all year | 005 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 005 |
| Phosphorus, total [as P] | daily average | report only (lb/d) | all year | 005 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 005 |
| Phosphorous, total organic [as P] | daily average | report only (mg/L) | all year | 005 |
| Phosphorous, total organic [as P] | daily maximum | report only (mg/L) | all year | 005 |
| Phosphorous, total organic [as P] | daily average | report only (lb/d) | all year | 005 |
| Phosphorous, total organic [as P] | daily maximum | report only (lb/d) | all year | 005 |
| Enterococci: group D, MF trans, M-E, EIA | geometric mean | ≤ 100 CFU/100mL | all year | 005 |
| Enterococci: group D, MF trans, M-E, EIA | daily maximum | report only (CFU/100mL) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily average | ≤ .133 MGD | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| Chlorine, total residual | daily minimum | ≥ 1 mg/L | all year | 005 |
| Chlorine, total residual | daily maximum | ≤ 4 mg/L | all year | 005 |
| Zinc, total [as Zn] | daily average | ≤ 109.7 ug/L | all year | 006 |
| Zinc, total [as Zn] | daily maximum | ≤ 272.7 ug/L | all year | 006 |
| Zinc, total [as Zn] | daily average | ≤ .01226 lb/d | all year | 006 |
| Zinc, total [as Zn] | daily maximum | ≤ .03047 lb/d | all year | 006 |
| Carbon tetrachloride | daily average | ≤ 1.9 ug/L | all year | 006 |
| Carbon tetrachloride | daily maximum | ≤ 4 ug/L | all year | 006 |
| Carbon tetrachloride | daily average | ≤ .00021 lb/d | all year | 006 |
| Carbon tetrachloride | daily maximum | ≤ .00044 lb/d | all year | 006 |
| 1,2-Dichloroethane | daily average | ≤ 7.1 ug/L | all year | 006 |
| 1,2-Dichloroethane | daily maximum | ≤ 22 ug/L | all year | 006 |
| 1,2-Dichloroethane | daily average | ≤ .00079 lb/d | all year | 006 |
| 1,2-Dichloroethane | daily maximum | ≤ .00246 lb/d | all year | 006 |
| Chloroform | daily average | ≤ 2.2 ug/L | all year | 006 |
| Chloroform | daily maximum | ≤ 4.8 ug/L | all year | 006 |
| Chloroform | daily average | ≤ .00025 lb/d | all year | 006 |
| Chloroform | daily maximum | ≤ .00054 lb/d | all year | 006 |
| Toluene | daily average | ≤ 2.7 ug/L | all year | 006 |
| Toluene | daily maximum | ≤ 8.4 ug/L | all year | 006 |
| Toluene | daily average | ≤ .0003 lb/d | all year | 006 |
| Toluene | daily maximum | ≤ .00093 lb/d | all year | 006 |
| Benzene | daily average | ≤ 3.9 ug/L | all year | 006 |
| Benzene | daily maximum | ≤ 14.2 ug/L | all year | 006 |
| Benzene | daily average | ≤ .00043 lb/d | all year | 006 |
| Benzene | daily maximum | ≤ .00159 lb/d | all year | 006 |
| Acenaphthylene | daily average | ≤ 2.3 ug/L | all year | 006 |
| Acenaphthylene | daily maximum | ≤ 6.2 ug/L | all year | 006 |
| Acenaphthylene | daily average | ≤ .00026 lb/d | all year | 006 |
| Acenaphthylene | daily maximum | ≤ .00069 lb/d | all year | 006 |
| Acenaphthene | daily average | ≤ 2.3 ug/L | all year | 006 |
| Acenaphthene | daily maximum | ≤ 6.2 ug/L | all year | 006 |
| Acenaphthene | daily average | ≤ .00026 lb/d | all year | 006 |
| Acenaphthene | daily maximum | ≤ .00069 lb/d | all year | 006 |
| Acrylonitrile | daily average | ≤ 10 ug/L | all year | 006 |
| Acrylonitrile | daily maximum | ≤ 25.3 ug/L | all year | 006 |
| Acrylonitrile | daily average | ≤ .00112 lb/d | all year | 006 |
| Acrylonitrile | daily maximum | ≤ .00283 lb/d | all year | 006 |
| Anthracene | daily average | ≤ 2.3 ug/L | all year | 006 |
| Anthracene | daily maximum | ≤ 6.2 ug/L | all year | 006 |
| Anthracene | daily average | ≤ .00026 lb/d | all year | 006 |
| Anthracene | daily maximum | ≤ .00069 lb/d | all year | 006 |
| Benzo[b]fluoranthene | daily average | ≤ 2.4 ug/L | all year | 006 |
| Benzo[b]fluoranthene | daily maximum | ≤ 6.4 ug/L | all year | 006 |
| Benzo[b]fluoranthene | daily average | ≤ .00027 lb/d | all year | 006 |
| Benzo[b]fluoranthene | daily maximum | ≤ .00071 lb/d | all year | 006 |
| Benzo[k]fluoranthene | daily average | ≤ 2.3 ug/L | all year | 006 |
| Benzo[k]fluoranthene | daily maximum | ≤ 6.2 ug/L | all year | 006 |
| Benzo[k]fluoranthene | daily average | ≤ .00026 lb/d | all year | 006 |
| Benzo[k]fluoranthene | daily maximum | ≤ .00069 lb/d | all year | 006 |
| Benzo[a]pyrene | daily average | ≤ 2.4 ug/L | all year | 006 |
| Benzo[a]pyrene | daily maximum | ≤ 6.4 ug/L | all year | 006 |
| Benzo[a]pyrene | daily average | ≤ .00027 lb/d | all year | 006 |
| Benzo[a]pyrene | daily maximum | ≤ .00071 lb/d | all year | 006 |
| Chlorobenzene | daily average | ≤ 1.6 ug/L | all year | 006 |
| Chlorobenzene | daily maximum | ≤ 2.9 ug/L | all year | 006 |
| Chlorobenzene | daily average | ≤ .00018 lb/d | all year | 006 |
| Chlorobenzene | daily maximum | ≤ .00033 lb/d | all year | 006 |
| Chrysene | daily average | ≤ 2.3 ug/L | all year | 006 |
| Chrysene | daily maximum | ≤ 6.2 ug/L | all year | 006 |
| Chrysene | daily average | ≤ .00026 lb/d | all year | 006 |
| Chrysene | daily maximum | ≤ .00069 lb/d | all year | 006 |
| Diethyl phthalate | daily average | ≤ 8.5 ug/L | all year | 006 |
| Diethyl phthalate | daily maximum | ≤ 21.2 ug/L | all year | 006 |
| Diethyl phthalate | daily average | ≤ .00095 lb/d | all year | 006 |
| Diethyl phthalate | daily maximum | ≤ .00237 lb/d | all year | 006 |
| Dimethyl phthalate | daily average | ≤ 2 ug/L | all year | 006 |
| Dimethyl phthalate | daily maximum | ≤ 4.9 ug/L | all year | 006 |
| Dimethyl phthalate | daily average | ≤ .00022 lb/d | all year | 006 |
| Dimethyl phthalate | daily maximum | ≤ .00055 lb/d | all year | 006 |
| Ethylbenzene | daily average | ≤ 3.3 ug/L | all year | 006 |
| Ethylbenzene | daily maximum | ≤ 11.3 ug/L | all year | 006 |
| Ethylbenzene | daily average | ≤ .00037 lb/d | all year | 006 |
| Ethylbenzene | daily maximum | ≤ .00126 lb/d | all year | 006 |
| Fluoranthene | daily average | ≤ 2.6 ug/L | all year | 006 |
| Fluoranthene | daily maximum | ≤ 7.1 ug/L | all year | 006 |
| Fluoranthene | daily average | ≤ .00029 lb/d | all year | 006 |
| Fluoranthene | daily maximum | ≤ .00079 lb/d | all year | 006 |
| Fluorene | daily average | ≤ 2.3 ug/L | all year | 006 |
| Fluorene | daily maximum | ≤ 6.2 ug/L | all year | 006 |
| Fluorene | daily average | ≤ .00026 lb/d | all year | 006 |
| Fluorene | daily maximum | ≤ .00069 lb/d | all year | 006 |
| Hexachlorobutadiene | daily average | ≤ 2.1 ug/L | all year | 006 |
| Hexachlorobutadiene | daily maximum | ≤ 5.1 ug/L | all year | 006 |
| Hexachlorobutadiene | daily average | ≤ .00023 lb/d | all year | 006 |
| Hexachlorobutadiene | daily maximum | ≤ .00057 lb/d | all year | 006 |
| Hexachloroethane | daily average | ≤ 2.2 ug/L | all year | 006 |
| Hexachloroethane | daily maximum | ≤ 5.6 ug/L | all year | 006 |
| Hexachloroethane | daily average | ≤ .00025 lb/d | all year | 006 |
| Hexachloroethane | daily maximum | ≤ .00063 lb/d | all year | 006 |
| Methyl chloride [Chloromethane] | daily average | ≤ 9 ug/L | all year | 006 |
| Methyl chloride [Chloromethane] | daily maximum | ≤ 19.9 ug/L | all year | 006 |
| Methyl chloride [Chloromethane] | daily average | ≤ .001 lb/d | all year | 006 |
| Methyl chloride [Chloromethane] | daily maximum | ≤ .00222 lb/d | all year | 006 |
| Methylene chloride | daily average | ≤ 4.2 ug/L | all year | 006 |
| Methylene chloride | daily maximum | ≤ 9.3 ug/L | all year | 006 |
| Methylene chloride | daily average | ≤ .00047 lb/d | all year | 006 |
| Methylene chloride | daily maximum | ≤ .00104 lb/d | all year | 006 |
| Nitrobenzene | daily average | ≤ 2.8 ug/L | all year | 006 |
| Nitrobenzene | daily maximum | ≤ 7.1 ug/L | all year | 006 |
| Nitrobenzene | daily average | ≤ .00032 lb/d | all year | 006 |
| Nitrobenzene | daily maximum | ≤ .00079 lb/d | all year | 006 |
| Phenanthrene | daily average | ≤ 2.3 ug/L | all year | 006 |
| Phenanthrene | daily maximum | ≤ 6.2 ug/L | all year | 006 |
| Phenanthrene | daily average | ≤ .00026 lb/d | all year | 006 |
| Phenanthrene | daily maximum | ≤ .00069 lb/d | all year | 006 |
| Pyrene | daily average | ≤ 2.6 ug/L | all year | 006 |
| Pyrene | daily maximum | ≤ 7 ug/L | all year | 006 |
| Pyrene | daily average | ≤ .00029 lb/d | all year | 006 |
| Pyrene | daily maximum | ≤ .00078 lb/d | all year | 006 |
| Tetrachloroethylene | daily average | ≤ 2.3 ug/L | all year | 006 |
| Tetrachloroethylene | daily maximum | ≤ 5.9 ug/L | all year | 006 |
| Tetrachloroethylene | daily average | ≤ .00026 lb/d | all year | 006 |
| Tetrachloroethylene | daily maximum | ≤ .00065 lb/d | all year | 006 |
| 1,1-Dichloroethane | daily average | ≤ 2.3 ug/L | all year | 006 |
| 1,1-Dichloroethane | daily maximum | ≤ 6.2 ug/L | all year | 006 |
| 1,1-Dichloroethane | daily average | ≤ .00026 lb/d | all year | 006 |
| 1,1-Dichloroethane | daily maximum | ≤ .00069 lb/d | all year | 006 |
| 1,1-Dichloroethylene | daily average | ≤ 1.7 ug/L | all year | 006 |
| 1,1-Dichloroethylene | daily maximum | ≤ 2.6 ug/L | all year | 006 |
| 1,1-Dichloroethylene | daily average | ≤ .00019 lb/d | all year | 006 |
| 1,1-Dichloroethylene | daily maximum | ≤ .00029 lb/d | all year | 006 |
| 1,1,1-Trichloroethane | daily average | ≤ 2.2 ug/L | all year | 006 |
| 1,1,1-Trichloroethane | daily maximum | ≤ 5.6 ug/L | all year | 006 |
| 1,1,1-Trichloroethane | daily average | ≤ .00025 lb/d | all year | 006 |
| 1,1,1-Trichloroethane | daily maximum | ≤ .00063 lb/d | all year | 006 |
| 1,1,2-Trichloroethane | daily average | ≤ 2.2 ug/L | all year | 006 |
| 1,1,2-Trichloroethane | daily maximum | ≤ 5.6 ug/L | all year | 006 |
| 1,1,2-Trichloroethane | daily average | ≤ .00025 lb/d | all year | 006 |
| 1,1,2-Trichloroethane | daily maximum | ≤ .00063 lb/d | all year | 006 |
| Benzo[a]anthracene | daily average | ≤ 2.3 ug/L | all year | 006 |
| Benzo[a]anthracene | daily maximum | ≤ 6.2 ug/L | all year | 006 |
| Benzo[a]anthracene | daily average | ≤ .00026 lb/d | all year | 006 |
| Benzo[a]anthracene | daily maximum | ≤ .00069 lb/d | all year | 006 |
| 1,2-Dichlorobenzene | daily average | ≤ 8 ug/L | all year | 006 |
| 1,2-Dichlorobenzene | daily maximum | ≤ 17 ug/L | all year | 006 |
| 1,2-Dichlorobenzene | daily average | ≤ .0009 lb/d | all year | 006 |
| 1,2-Dichlorobenzene | daily maximum | ≤ .0019 lb/d | all year | 006 |
| 1,2-Dichloropropane | daily average | ≤ 16 ug/L | all year | 006 |
| 1,2-Dichloropropane | daily maximum | ≤ 24 ug/L | all year | 006 |
| 1,2-Dichloropropane | daily average | ≤ .00179 lb/d | all year | 006 |
| 1,2-Dichloropropane | daily maximum | ≤ .00269 lb/d | all year | 006 |
| trans-1,2-Dichloroethylene | daily average | ≤ 2.2 ug/L | all year | 006 |
| trans-1,2-Dichloroethylene | daily maximum | ≤ 5.6 ug/L | all year | 006 |
| trans-1,2-Dichloroethylene | daily average | ≤ .00025 lb/d | all year | 006 |
| trans-1,2-Dichloroethylene | daily maximum | ≤ .00063 lb/d | all year | 006 |
| 1,2,4-Trichlorobenzene | daily average | ≤ 7.1 ug/L | all year | 006 |
| 1,2,4-Trichlorobenzene | daily maximum | ≤ 14.6 ug/L | all year | 006 |
| 1,2,4-Trichlorobenzene | daily average | ≤ .00079 lb/d | all year | 006 |
| 1,2,4-Trichlorobenzene | daily maximum | ≤ .00163 lb/d | all year | 006 |
| 1,3-Dichlorobenzene | daily average | ≤ 3.2 ug/L | all year | 006 |
| 1,3-Dichlorobenzene | daily maximum | ≤ 4.6 ug/L | all year | 006 |
| 1,3-Dichlorobenzene | daily average | ≤ .00036 lb/d | all year | 006 |
| 1,3-Dichlorobenzene | daily maximum | ≤ .00051 lb/d | all year | 006 |
| 1,4-Dichlorobenzene | daily average | ≤ 1.6 ug/L | all year | 006 |
| 1,4-Dichlorobenzene | daily maximum | ≤ 2.9 ug/L | all year | 006 |
| 1,4-Dichlorobenzene | daily average | ≤ .00018 lb/d | all year | 006 |
| 1,4-Dichlorobenzene | daily maximum | ≤ .00033 lb/d | all year | 006 |
| 2-Chlorophenol | daily average | ≤ 3.2 ug/L | all year | 006 |
| 2-Chlorophenol | daily maximum | ≤ 10.2 ug/L | all year | 006 |
| 2-Chlorophenol | daily average | ≤ .00036 lb/d | all year | 006 |
| 2-Chlorophenol | daily maximum | ≤ .00114 lb/d | all year | 006 |
| 2-Nitrophenol | daily average | ≤ 4.3 ug/L | all year | 006 |
| 2-Nitrophenol | daily maximum | ≤ 7.2 ug/L | all year | 006 |
| 2-Nitrophenol | daily average | ≤ .00048 lb/d | all year | 006 |
| 2-Nitrophenol | daily maximum | ≤ .00081 lb/d | all year | 006 |
| 2,4-Dichlorophenol | daily average | ≤ 4.1 ug/L | all year | 006 |
| 2,4-Dichlorophenol | daily maximum | ≤ 11.7 ug/L | all year | 006 |
| 2,4-Dichlorophenol | daily average | ≤ .00046 lb/d | all year | 006 |
| 2,4-Dichlorophenol | daily maximum | ≤ .00131 lb/d | all year | 006 |
| 2,4-Dimethylphenol | daily average | ≤ 1.9 ug/L | all year | 006 |
| 2,4-Dimethylphenol | daily maximum | ≤ 3.8 ug/L | all year | 006 |
| 2,4-Dimethylphenol | daily average | ≤ .00021 lb/d | all year | 006 |
| 2,4-Dimethylphenol | daily maximum | ≤ .00042 lb/d | all year | 006 |
| 2,4-Dinitrotoluene | daily average | ≤ 11.8 ug/L | all year | 006 |
| 2,4-Dinitrotoluene | daily maximum | ≤ 29.8 ug/L | all year | 006 |
| 2,4-Dinitrotoluene | daily average | ≤ .00132 lb/d | all year | 006 |
| 2,4-Dinitrotoluene | daily maximum | ≤ .00333 lb/d | all year | 006 |
| 2,4-Dinitrophenol | daily average | ≤ 7.4 ug/L | all year | 006 |
| 2,4-Dinitrophenol | daily maximum | ≤ 12.9 ug/L | all year | 006 |
| 2,4-Dinitrophenol | daily average | ≤ .00083 lb/d | all year | 006 |
| 2,4-Dinitrophenol | daily maximum | ≤ .00144 lb/d | all year | 006 |
| 2,6-Dinitrotoluene | daily average | ≤ 26.6 ug/L | all year | 006 |
| 2,6-Dinitrotoluene | daily maximum | ≤ 67 ug/L | all year | 006 |
| 2,6-Dinitrotoluene | daily average | ≤ .00298 lb/d | all year | 006 |
| 2,6-Dinitrotoluene | daily maximum | ≤ .00748 lb/d | all year | 006 |
| 4-Nitrophenol | daily average | ≤ 7.5 ug/L | all year | 006 |
| 4-Nitrophenol | daily maximum | ≤ 14 ug/L | all year | 006 |
| 4-Nitrophenol | daily average | ≤ .00084 lb/d | all year | 006 |
| 4-Nitrophenol | daily maximum | ≤ .00145 lb/d | all year | 006 |
| 4,6-Dinitro-o-cresol | daily average | ≤ 8.2 ug/L | all year | 006 |
| 4,6-Dinitro-o-cresol | daily maximum | ≤ 28.9 ug/L | all year | 006 |
| 4,6-Dinitro-o-cresol | daily average | ≤ .00091 lb/d | all year | 006 |
| 4,6-Dinitro-o-cresol | daily maximum | ≤ .00323 lb/d | all year | 006 |
| Phenol | daily average | ≤ 1.6 ug/L | all year | 006 |
| Phenol | daily maximum | ≤ 2.7 ug/L | all year | 006 |
| Phenol | daily average | ≤ .00018 lb/d | all year | 006 |
| Phenol | daily maximum | ≤ .0003 lb/d | all year | 006 |
| Naphthalene | daily average | ≤ 2.3 ug/L | all year | 006 |
| Naphthalene | daily maximum | ≤ 6.2 ug/L | all year | 006 |
| Naphthalene | daily average | ≤ .00026 lb/d | all year | 006 |
| Naphthalene | daily maximum | ≤ .00069 lb/d | all year | 006 |
| Di[2-ethylhexyl] phthalate [DEHP] | daily average | ≤ 10.8 ug/L | all year | 006 |
| Di[2-ethylhexyl] phthalate [DEHP] | daily maximum | ≤ 29.2 ug/L | all year | 006 |
| Di[2-ethylhexyl] phthalate [DEHP] | daily average | ≤ .0012 lb/d | all year | 006 |
| Di[2-ethylhexyl] phthalate [DEHP] | daily maximum | ≤ .00326 lb/d | all year | 006 |
| Di-n-butyl phthalate | daily average | ≤ 2.8 ug/L | all year | 006 |
| Di-n-butyl phthalate | daily maximum | ≤ 6 ug/L | all year | 006 |
| Di-n-butyl phthalate | daily average | ≤ .00032 lb/d | all year | 006 |
| Di-n-butyl phthalate | daily maximum | ≤ .00067 lb/d | all year | 006 |
| Vinyl chloride | daily average | ≤ 10.9 ug/L | all year | 006 |
| Vinyl chloride | daily maximum | ≤ 28 ug/L | all year | 006 |
| Vinyl chloride | daily average | ≤ .00121 lb/d | all year | 006 |
| Vinyl chloride | daily maximum | ≤ .00313 lb/d | all year | 006 |
| Trichloroethylene | daily average | ≤ 2.2 ug/L | all year | 006 |
| Trichloroethylene | daily maximum | ≤ 5.6 ug/L | all year | 006 |
| Trichloroethylene | daily average | ≤ .00025 lb/d | all year | 006 |
| Trichloroethylene | daily maximum | ≤ .00063 lb/d | all year | 006 |
| Hexachlorobenzene | daily average | ≤ 1.6 ug/L | all year | 006 |
| Hexachlorobenzene | daily maximum | ≤ 2.9 ug/L | all year | 006 |
| Hexachlorobenzene | daily average | ≤ .00018 lb/d | all year | 006 |
| Hexachlorobenzene | daily maximum | ≤ .00033 lb/d | all year | 006 |
| 1,3-Dichloropropene | daily average | ≤ 3 ug/L | all year | 006 |
| 1,3-Dichloropropene | daily maximum | ≤ 4.6 ug/L | all year | 006 |
| 1,3-Dichloropropene | daily average | ≤ .00034 lb/d | all year | 006 |
| 1,3-Dichloropropene | daily maximum | ≤ .00051 lb/d | all year | 006 |
| Chloroethane | daily average | ≤ 10.9 ug/L | all year | 006 |
| Chloroethane | daily maximum | ≤ 28 ug/L | all year | 006 |
| Chloroethane | daily average | ≤ .00121 lb/d | all year | 006 |
| Chloroethane | daily maximum | ≤ .00313 lb/d | all year | 006 |
| pH | daily minimum | ≥ 6 SU | all year | 008 |
| pH | daily maximum | ≤ 9 SU | all year | 008 |
| Solids, total suspended | daily average | ≤ 30 mg/L | all year | 008 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 008 |
| Oil & Grease | daily average | ≤ 10 mg/L | all year | 008 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 008 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 011 |
| Oxygen, dissolved [DO] | daily average | report only (mg/L) | all year | 011 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 011 |
| BOD, 5-day, 20 deg. C | daily average | report only (mg/L) | all year | 011 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 011 |
| BOD, 5-day, 20 deg. C | daily average | report only (lb/d) | all year | 011 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | 011 |
| BOD, 5-day, 20 deg. C | rolling average | ≤ 149859 lb/yr | all year | 011 |
| pH | daily minimum | ≥ 6 SU | all year | 011 |
| pH | daily maximum | ≤ 9 SU | all year | 011 |
| Solids, total suspended | daily average | report only (mg/L) | all year | 011 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 011 |
| Solids, total suspended | daily average | report only (lb/d) | all year | 011 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 011 |
| Solids, total suspended | rolling average | ≤ 749208 lb/yr | all year | 011 |
| Nitrogen, total [as N] | daily average | report only (mg/L) | all year | 011 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 011 |
| Nitrogen, total [as N] | daily average | report only (lb/d) | all year | 011 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 011 |
| Nitrogen, total [as N] | rolling average | ≤ 92564 lb/yr | all year | 011 |
| Nitrogen, organic total [as N] | daily average | report only (mg/L) | all year | 011 |
| Nitrogen, organic total [as N] | daily maximum | report only (mg/L) | all year | 011 |
| Nitrogen, organic total [as N] | daily average | report only (lb/d) | all year | 011 |
| Nitrogen, organic total [as N] | daily maximum | report only (lb/d) | all year | 011 |
| Nitrogen, ammonia total [as N] | daily average | report only (mg/L) | all year | 011 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 011 |
| Nitrogen, ammonia total [as N] | daily average | report only (lb/d) | all year | 011 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | 011 |
| Nitrogen, Kjeldahl, total [as N] | daily average | report only (mg/L) | all year | 011 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 011 |
| Nitrogen, Kjeldahl, total [as N] | daily average | report only (lb/d) | all year | 011 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (lb/d) | all year | 011 |
| Nitrite + Nitrate total [as N] | daily average | report only (mg/L) | all year | 011 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 011 |
| Nitrite + Nitrate total [as N] | daily average | report only (lb/d) | all year | 011 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (lb/d) | all year | 011 |
| Phosphorus, total [as P] | daily average | report only (mg/L) | all year | 011 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 011 |
| Phosphorus, total [as P] | daily average | report only (lb/d) | all year | 011 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 011 |
| Phosphorus, total [as P] | rolling average | ≤ 1460 lb/yr | all year | 011 |
| Phosphorous, total organic [as P] | daily average | report only (mg/L) | all year | 011 |
| Phosphorous, total organic [as P] | daily maximum | report only (mg/L) | all year | 011 |
| Phosphorous, total organic [as P] | daily average | report only (lb/d) | all year | 011 |
| Phosphorous, total organic [as P] | daily maximum | report only (lb/d) | all year | 011 |
| Phosphate, ortho [as P] | daily average | report only (mg/L) | all year | 011 |
| Phosphate, ortho [as P] | daily maximum | report only (mg/L) | all year | 011 |
| Phosphate, ortho [as P] | daily average | report only (lb/d) | all year | 011 |
| Phosphate, ortho [as P] | daily maximum | report only (lb/d) | all year | 011 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 011 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 011 |
| BOD, 5-day, 20 deg. C | daily average | report only (mg/L) | all year | SUM |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | SUM |
| BOD, 5-day, 20 deg. C | daily average | report only (lb/d) | all year | SUM |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | SUM |
| Solids, total suspended | daily average | report only (mg/L) | all year | SUM |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | SUM |
| Solids, total suspended | daily average | report only (lb/d) | all year | SUM |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | SUM |
| Nitrogen, total [as N] | daily average | report only (mg/L) | all year | SUM |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | SUM |
| Nitrogen, total [as N] | daily average | report only (lb/d) | all year | SUM |
| Nitrogen, total [as N] | daily geometric mean | report only (lb/d) | all year | SUM |
| Nitrogen, organic total [as N] | daily average | report only (mg/L) | all year | SUM |
| Nitrogen, organic total [as N] | daily maximum | report only (mg/L) | all year | SUM |
| Nitrogen, organic total [as N] | daily average | report only (lb/d) | all year | SUM |
| Nitrogen, organic total [as N] | daily maximum | report only (lb/d) | all year | SUM |
| Nitrogen, ammonia total [as N] | daily average | report only (mg/L) | all year | SUM |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | SUM |
| Nitrogen, ammonia total [as N] | daily average | report only (lb/d) | all year | SUM |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | SUM |
| Nitrogen, Kjeldahl, total [as N] | daily average | report only (mg/L) | all year | SUM |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | SUM |
| Nitrogen, Kjeldahl, total [as N] | daily average | report only (lb/d) | all year | SUM |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (lb/d) | all year | SUM |
| Nitrite + Nitrate total [as N] | daily average | report only (mg/L) | all year | SUM |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | SUM |
| Nitrite + Nitrate total [as N] | daily average | report only (lb/d) | all year | SUM |
| Nitrite + Nitrate total [as N] | daily maximum | report only (lb/d) | all year | SUM |
| Phosphate, ortho [as PO4] | daily average | report only (mg/L) | all year | SUM |
| Phosphate, ortho [as PO4] | daily maximum | report only (mg/L) | all year | SUM |
| Phosphate, ortho [as PO4] | daily average | report only (lb/d) | all year | SUM |
| Phosphate, ortho [as PO4] | daily maximum | report only (lb/d) | all year | SUM |
| Phosphorus, total [as P] | daily average | report only (mg/L) | all year | SUM |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | SUM |
| Phosphorus, total [as P] | daily average | report only (lb/d) | all year | SUM |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | SUM |
| Phosphorous, total organic [as P] | daily average | report only (mg/L) | all year | SUM |
| Phosphorous, total organic [as P] | daily maximum | report only (mg/L) | all year | SUM |
| Phosphorous, total organic [as P] | daily average | report only (lb/d) | all year | SUM |
| Phosphorous, total organic [as P] | daily maximum | report only (lb/d) | all year | SUM |
| Flow, in conduit or thru treatment plant | daily average | ≤ 2.225 MGD | all year | SUM |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | SUM |
Cited limits by parameter: Delaware's rules and the federal ones.
Same industry: the 5 Chemicals and Allied Products permits in Delaware.
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