NPDES permit MA0004006 · Major NON-POTW · effective, expires 2027-11-30 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-08-31. Most often over: Chlorine, total residual (2), Nitrogen, ammonia total [as N] (1), Benzo[a]pyrene (1).
Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Temperature, water deg. centigrade | DAILY MX | report only | Apr |
| 001 | Flow rate | DAILY MX | <= 600 gal/min | all year |
| 001 | Turbidity | MO AVG | report only | all year |
| 001 | Turbidity | DAILY MX | report only | all year |
| 001 | pH | MINIMUM | >= 6.5 SU | all year |
| 001 | pH | MAXIMUM | <= 8.5 SU | all year |
| 001 | pH | DAILY MX | report only | Apr |
| 001 | pH | DAILY MX | report only | Apr |
| 001 | Salinity | DAILY MX | report only | Apr |
| 001 | Salinity | DAILY MX | report only | Apr |
| 001 | Solids, total | DAILY MX | report only | Apr |
| 001 | Solids, total suspended | MO AVG | <= 30 mg/L | all year |
| 001 | Solids, total suspended | DAILY MX | <= 100 mg/L | all year |
| 001 | Solids, total suspended | DAILY MX | report only | Apr |
| 001 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 1.8 mg/L | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | report only | Apr |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | report only | Apr |
| 001 | Carbon, tot organic [TOC] | DAILY MX | report only | Apr |
| 001 | Cyanide, total [as CN] | DAILY MX | <= 5 ug/L | all year |
| 001 | Cadmium, total [as Cd] | DAILY MX | report only | Apr |
| 001 | Cadmium, total [as Cd] | DAILY MX | report only | Apr |
| 001 | Copper, total [as Cu] | DAILY MX | <= 5.8 ug/L | all year |
| 001 | Copper, total [as Cu] | DAILY MX | report only | Apr |
| 001 | Copper, total [as Cu] | DAILY MX | report only | Apr |
| 001 | Lead, total [as Pb] | DAILY MX | report only | Apr |
| 001 | Lead, total [as Pb] | DAILY MX | report only | Apr |
| 001 | Nickel, total [as Ni] | DAILY MX | report only | Apr |
| 001 | Nickel, total [as Ni] | DAILY MX | report only | Apr |
| 001 | Zinc, total [as Zn] | DAILY MX | report only | Apr |
| 001 | Zinc, total [as Zn] | DAILY MX | report only | Apr |
| 001 | Methyl tert-butyl ether [MTBE] | MO AVG | <= 20 ug/L | all year |
| 001 | Toluene | DAILY MX | report only | Apr |
| 001 | Toluene | DAILY MX | report only | Apr |
| 001 | Benzene | DAILY MX | <= 5 ug/L | all year |
| 001 | Benzene | DAILY MX | report only | Apr |
| 001 | Acenaphthylene | DAILY MX | report only | Apr |
| 001 | Acenaphthylene | DAILY MX | report only | Apr |
| 001 | Acenaphthene | DAILY MX | report only | Apr |
| 001 | Acenaphthene | DAILY MX | report only | Apr |
| 001 | Anthracene | DAILY MX | report only | Apr |
| 001 | Anthracene | DAILY MX | report only | Apr |
| 001 | Benzo[b]fluoranthene | DAILY MX | report only | all year |
| 001 | Benzo[b]fluoranthene | DAILY MX | report only | Apr |
| 001 | Benzo[k]fluoranthene | DAILY MX | report only | all year |
| 001 | Benzo[k]fluoranthene | DAILY MX | report only | Apr |
| 001 | Benzo[a]pyrene | MO AVG | <= .05 ug/L | all year |
| 001 | Benzo[a]pyrene | DAILY MX | report only | Apr |
| 001 | Chrysene | DAILY MX | report only | all year |
| 001 | Chrysene | DAILY MX | report only | Apr |
| 001 | Ethylbenzene | DAILY MX | report only | Apr |
| 001 | Ethylbenzene | DAILY MX | report only | Apr |
| 001 | Fluoranthene | DAILY MX | report only | Apr |
| 001 | Fluoranthene | DAILY MX | report only | Apr |
| 001 | Fluorene | DAILY MX | report only | Apr |
| 001 | Fluorene | DAILY MX | report only | Apr |
| 001 | Indeno[1,2,3-cd]pyrene | DAILY MX | report only | all year |
| 001 | Indeno[1,2,3-cd]pyrene | DAILY MX | report only | Apr |
| 001 | Phenanthrene | DAILY MX | report only | Apr |
| 001 | Phenanthrene | DAILY MX | report only | Apr |
| 001 | Pyrene | DAILY MX | report only | Apr |
| 001 | Pyrene | DAILY MX | report only | Apr |
| 001 | Benzo[ghi]perylene | DAILY MX | report only | Apr |
| 001 | Benzo[ghi]perylene | DAILY MX | report only | Apr |
| 001 | Benzo[a]anthracene | DAILY MX | report only | all year |
| 001 | Benzo[a]anthracene | DAILY MX | report only | Apr |
| 001 | Dibenz[a,h]anthracene | DAILY MX | report only | all year |
| 001 | Dibenz[a,h]anthracene | DAILY MX | report only | Apr |
| 001 | Phenol | DAILY MX | report only | Apr |
| 001 | Naphthalene | DAILY MX | <= 10 ug/L | all year |
| 001 | Naphthalene | DAILY MX | report only | Apr |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | Chlorine, total residual | DAILY MX | <= 30 ug/L | all year |
| 001 | Chlorine, total residual | DAILY MX | report only | Apr |
| 001 | tert-Butyl alcohol [TBA] | DAILY MX | report only | Apr |
| 001 | Number of Events | DAILY MX | report only | all year |
| 001 | Enterococci | DAILY MX | report only | all year |
| 001 | Coliform, total general | DAILY MX | report only | all year |
| 001 | Ethanol | DAILY MX | report only | Apr |
| 001 | Chemical Oxygen Demand [COD] | DAILY MX | report only | all year |
| 001 | Xylene [mix of m+o+p] | DAILY MX | report only | Apr |
| 001 | Xylene [mix of m+o+p] | DAILY MX | report only | Apr |
| 001 | LC50 Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | MO AV MN | >= 100 % | Apr |
| 001 | LC50 Static 48Hr Acute Menidia | MO AV MN | >= 100 % | Apr |
| 002 | Flow rate | DAILY MX | <= 30 gal/min | all year |
| 002 | pH | MINIMUM | >= 6.5 SU | all year |
| 002 | pH | MAXIMUM | <= 8.5 SU | all year |
| 002 | Cyanide, total [as CN] | DAILY MX | report only | all year |
| 002 | Methyl tert-butyl ether [MTBE] | DAILY MX | <= 20 ug/L | all year |
| 002 | Polynuclear Aromatic Hydrocarbons [PAHs] | DAILY MX | <= .1 ug/L | all year |
| 002 | Polynuclear Aromatic Hydrocarbons [PAHs] | DAILY MX | <= 10 ug/L | all year |
| 002 | Polynuclear Aromatic Hydrocarbons [PAHs] | DAILY MX | <= 100 ug/L | all year |
| 002 | Benzene | DAILY MX | <= 5 ug/L | all year |
| 002 | Naphthalene | DAILY MX | <= 20 ug/L | all year |
| 002 | BTEX | DAILY MX | <= 100 ug/L | all year |
| 002 | Hydrocarbons, total petroleum | DAILY MX | <= 5 mg/L | all year |
| 002 | Flow, total | DAILY MX | report only | all year |
| PFAS | Perfluorooctanoic acid (PFOA) | DAILY MX | report only | all year |
| PFAS | Perfluoroheptanoic acid (PFHpA) | DAILY MX | report only | all year |
| PFAS | Perfluorononanoic acid (PFNA) | DAILY MX | report only | all year |
| PFAS | Perfluorodecanoic acid (PFDA) | DAILY MX | report only | all year |
| PFAS | Perfluorohexanesulfonic acid (PFHxS) | DAILY MX | report only | all year |
| PFAS | Perfluorooctanesulfonic acid (PFOS) | DAILY MX | report only | 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