CHELSEA EASTERN AVE TERMINAL — NPDES permit MA0001091: limits, due date and EPA's record

NPDES permit MA0001091 · Major NON-POTW · effective, expires 2027-11-30 · EPA's file as of 2026-09-19

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

Last period with anything received: 2026-08-31. Most often over: Benzene (2), Copper, total [as Cu] (2), Benzo[b]fluoranthene (1).

Reporting

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

Limits in force (96)

Outfall	Parameter	Statistic	Limit	Months
003	Temperature, water deg. centigrade	DAILY MX	report only	Apr
003	Flow rate	DAILY MX	<= 800 gal/min	all year
003	Turbidity	MO AVG	report only	all year
003	Turbidity	DAILY MX	report only	all year
003	pH	MINIMUM	>= 6.5 SU	all year
003	pH	MAXIMUM	<= 8.5 SU	all year
003	pH	DAILY MX	report only	Apr
003	pH	DAILY MX	report only	Apr
003	Salinity	DAILY MX	report only	Apr
003	Salinity	DAILY MX	report only	Apr
003	Solids, total	DAILY MX	report only	Apr
003	Solids, total suspended	MO AVG	<= 30 mg/L	all year
003	Solids, total suspended	DAILY MX	<= 100 mg/L	all year
003	Solids, total suspended	DAILY MX	report only	Apr
003	Nitrogen, ammonia total [as N]	DAILY MX	<= 1.8 mg/L	Apr, May, Jun, Jul, Aug, Sep, Oct
003	Nitrogen, ammonia total [as N]	DAILY MX	report only	Apr
003	Nitrogen, ammonia total [as N]	DAILY MX	report only	Apr
003	Carbon, tot organic [TOC]	DAILY MX	report only	Apr
003	Cadmium, total [as Cd]	DAILY MX	report only	Apr
003	Cadmium, total [as Cd]	DAILY MX	report only	Apr
003	Copper, total [as Cu]	DAILY MX	<= 5.8 ug/L	all year
003	Copper, total [as Cu]	DAILY MX	report only	Apr
003	Copper, total [as Cu]	DAILY MX	report only	Apr
003	Lead, total [as Pb]	DAILY MX	report only	Apr
003	Lead, total [as Pb]	DAILY MX	report only	Apr
003	Nickel, total [as Ni]	DAILY MX	report only	Apr
003	Nickel, total [as Ni]	DAILY MX	report only	Apr
003	Zinc, total [as Zn]	DAILY MX	report only	Apr
003	Zinc, total [as Zn]	DAILY MX	report only	Apr
003	Oil and grease	DAILY MX	<= 15 mg/L	all year
003	Methyl tert-butyl ether [MTBE]	DAILY MX	report only	all year
003	Toluene	DAILY MX	report only	Apr
003	Toluene	DAILY MX	report only	Apr
003	Benzene	DAILY MX	<= 5 ug/L	all year
003	Benzene	DAILY MX	report only	Apr
003	Acenaphthylene	DAILY MX	report only	Apr
003	Acenaphthylene	DAILY MX	report only	Apr
003	Acenaphthene	DAILY MX	report only	Apr
003	Acenaphthene	DAILY MX	report only	Apr
003	Anthracene	DAILY MX	report only	Apr
003	Anthracene	DAILY MX	report only	Apr
003	Benzo[b]fluoranthene	MO AVG	<= .05 ug/L	all year
003	Benzo[b]fluoranthene	DAILY MX	report only	all year
003	Benzo[b]fluoranthene	DAILY MX	report only	Apr
003	Benzo[k]fluoranthene	MO AVG	<= .05 ug/L	all year
003	Benzo[k]fluoranthene	DAILY MX	report only	Apr
003	Benzo[k]fluoranthene	DAILY MX	report only	all year
003	Benzo[k]fluoranthene	DAILY MX	report only	Apr
003	Benzo[a]pyrene	MO AVG	<= .05 ug/L	all year
003	Benzo[a]pyrene	DAILY MX	report only	Apr
003	Benzo[a]pyrene	DAILY MX	report only	all year
003	Benzo[a]pyrene	DAILY MX	report only	Apr
003	Chrysene	DAILY MX	report only	Apr
003	Chrysene	DAILY MX	report only	all year
003	Chrysene	DAILY MX	report only	Apr
003	Ethylbenzene	DAILY MX	report only	Apr
003	Ethylbenzene	DAILY MX	report only	Apr
003	Fluoranthene	DAILY MX	report only	Apr
003	Fluoranthene	DAILY MX	report only	Apr
003	Fluorene	DAILY MX	report only	Apr
003	Indeno[1,2,3-cd]pyrene	MO AVG	<= .1 ug/L	all year
003	Indeno[1,2,3-cd]pyrene	DAILY MX	report only	Apr
003	Indeno[1,2,3-cd]pyrene	DAILY MX	report only	all year
003	Indeno[1,2,3-cd]pyrene	DAILY MX	report only	Apr
003	Phenanthrene	DAILY MX	report only	Apr
003	Phenanthrene	DAILY MX	report only	Apr
003	Pyrene	DAILY MX	report only	Apr
003	Pyrene	DAILY MX	report only	Apr
003	Benzo[ghi]perylene	DAILY MX	report only	Apr
003	Benzo[ghi]perylene	DAILY MX	report only	Apr
003	Benzo[a]anthracene	DAILY MX	report only	Apr
003	Benzo[a]anthracene	DAILY MX	report only	all year
003	Benzo[a]anthracene	DAILY MX	report only	Apr
003	Dibenz[a,h]anthracene	DAILY MX	report only	Apr
003	Dibenz[a,h]anthracene	DAILY MX	report only	Apr
003	Dibenzo[a,h]anthracene, dry weight	DAILY MX	report only	all year
003	Naphthalene	DAILY MX	report only	Apr
003	Naphthalene	DAILY MX	<= 20 ug/L	all year
003	Naphthalene	DAILY MX	report only	Apr
003	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
003	Chlorine, total residual	DAILY MX	<= 30 ug/L	all year
003	Chlorine, total residual	DAILY MX	report only	Apr
003	Number of Events	DAILY MX	report only	all year
003	Enterococci	DAILY MX	report only	all year
003	Coliform, fecal general	DAILY MX	report only	all year
003	Chemical Oxygen Demand [COD]	DAILY MX	report only	all year
003	Xylene [mix of m+o+p]	DAILY MX	report only	Apr
003	Xylene [mix of m+o+p]	DAILY MX	report only	Apr
003	LC50 Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)	MO AV MN	report only	Apr
003	LC50 Static 48Hr Acute Menidia	MO AV MN	report only	Apr
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