CAMBREX CHARLES CITY, INC. — NPDES permit IA0003557: limits, due date and EPA's record

NPDES permit IA0003557 · Major NON-POTW · effective, expires 2028-05-31 · EPA's file as of 2026-09-19

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

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 (123)

Outfall	Parameter	Statistic	Limit	Months
002	BOD, 5-day, 20 deg. C	30DA AVG	<= 588.6 lb/d	all year
002	BOD, 5-day, 20 deg. C	DAILY MX	<= 1182.1 lb/d	all year
002	BOD, 5-day, 20 deg. C	30DA AVG	report only	all year
002	BOD, 5-day, 20 deg. C	DAILY MX	report only	all year
002	BOD, 5-day, 20 deg. C	30DA AVG	report only	all year
002	BOD, 5-day, 20 deg. C	DAILY MX	report only	all year
002	Oxygen demand, chem. [high level] [COD]	30DA AVG	<= 1377.8 lb/d	all year
002	Oxygen demand, chem. [high level] [COD]	DAILY MX	<= 2696.1 lb/d	all year
002	pH	DAILY MN	>= 6 SU	all year
002	pH	DAILY MX	<= 9 SU	all year
002	pH	30DA AVG	report only	all year
002	pH	DAILY MX	report only	all year
002	Solids, total suspended	30DA AVG	<= 998.59 lb/d	all year
002	Solids, total suspended	DAILY MX	<= 2009.2 lb/d	all year
002	Solids, total suspended	30DA AVG	report only	all year
002	Solids, total suspended	DAILY MX	report only	all year
002	Solids, total suspended	30DA AVG	report only	all year
002	Solids, total suspended	DAILY MX	report only	all year
002	Nitrogen, total [as N]	30DA AVG	<= 114 lb/d	all year
002	Nitrogen, total [as N]	DAILY MX	<= 153 lb/d	all year
002	Nitrogen, total [as N]	30DA AVG	report only	all year
002	Nitrogen, total [as N]	DAILY MX	report only	all year
002	Nitrogen, total [as N]	30DA AVG	report only	all year
002	Nitrogen, total [as N]	DAILY MX	report only	all year
002	Nitrogen, ammonia total [as N]	30DA AVG	<= 47.3 lb/d	Apr
002	Nitrogen, ammonia total [as N]	30DA AVG	<= 37.7 lb/d	Sep
002	Nitrogen, ammonia total [as N]	30DA AVG	<= 32.67 lb/d	Jun
002	Nitrogen, ammonia total [as N]	30DA AVG	<= 47.3 lb/d	Oct
002	Nitrogen, ammonia total [as N]	30DA AVG	<= 47.3 lb/d	May
002	Nitrogen, ammonia total [as N]	30DA AVG	<= 47.3 lb/d	Feb
002	Nitrogen, ammonia total [as N]	30DA AVG	<= 47.3 lb/d	Jan
002	Nitrogen, ammonia total [as N]	30DA AVG	<= 47.3 lb/d	Mar
002	Nitrogen, ammonia total [as N]	30DA AVG	<= 47.3 lb/d	Dec
002	Nitrogen, ammonia total [as N]	30DA AVG	<= 39.63 lb/d	Jul
002	Nitrogen, ammonia total [as N]	30DA AVG	<= 36.14 lb/d	Aug
002	Nitrogen, ammonia total [as N]	30DA AVG	<= 47.3 lb/d	Nov
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 135.4 lb/d	Apr
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 135.4 lb/d	Sep
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 135.4 lb/d	Jun
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 135.4 lb/d	Oct
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 135.4 lb/d	May
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 135.4 lb/d	Feb
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 135.4 lb/d	Jan
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 135.4 lb/d	Mar
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 135.4 lb/d	Dec
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 135.4 lb/d	Jul
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 135.4 lb/d	Aug
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 135.4 lb/d	Nov
002	Nitrogen, Kjeldahl, total [as N]	30DA AVG	report only	all year
002	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
002	Nitrogen, Kjeldahl, total [as N]	30DA AVG	report only	all year
002	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
002	Phosphorus, total [as P]	30DA AVG	report only	all year
002	Phosphorus, total [as P]	DAILY MX	report only	all year
002	Phosphorus, total [as P]	30DA AVG	report only	all year
002	Phosphorus, total [as P]	DAILY MX	report only	all year
002	Cyanide, total [as CN]	30DA AVG	<= .07593 mg/L	all year
002	Cyanide, total [as CN]	DAILY MX	<= .2858 mg/L	all year
002	Cyanide, total [as CN]	30DA AVG	<= .1081 lb/d	all year
002	Cyanide, total [as CN]	DAILY MX	<= .4088 lb/d	all year
002	Methyl cellosolve	30DA AVG	<= 65.35 lb/d	all year
002	Methyl cellosolve	DAILY MX	<= 160.96 lb/d	all year
002	1,2-Dichloroethane	30DA AVG	<= .16 lb/d	all year
002	1,2-Dichloroethane	DAILY MX	<= .64 lb/d	all year
002	Chloroform	30DA AVG	<= .02 lb/d	all year
002	Chloroform	DAILY MX	<= .03 lb/d	all year
002	Toluene	30DA AVG	<= .03 lb/d	all year
002	Toluene	DAILY MX	<= .1 lb/d	all year
002	Benzene	30DA AVG	<= .03 lb/d	all year
002	Benzene	DAILY MX	<= .08 lb/d	all year
002	Chlorobenzene	30DA AVG	<= .1 lb/d	all year
002	Chlorobenzene	DAILY MX	<= .24 lb/d	all year
002	Methylene chloride	30DA AVG	<= .48 lb/d	all year
002	Methylene chloride	DAILY MX	<= 1.45 lb/d	all year
002	1,2-Dichlorobenzene	30DA AVG	<= .1 lb/d	all year
002	1,2-Dichlorobenzene	DAILY MX	<= .24 lb/d	all year
002	Phenol	30DA AVG	<= .03 lb/d	all year
002	Phenol	DAILY MX	<= .08 lb/d	all year
002	Isopropyl acetate	30DA AVG	<= .8 lb/d	all year
002	Isopropyl acetate	DAILY MX	<= 2.09 lb/d	all year
002	Methyl formate	30DA AVG	<= .8 lb/d	all year
002	Methyl formate	DAILY MX	<= 2.09 lb/d	all year
002	Isobutyraldehyde	30DA AVG	<= .8 lb/d	all year
002	Isobutyraldehyde	DAILY MX	<= 1.93 lb/d	all year
002	n-Amyl acetate	30DA AVG	<= .8 lb/d	all year
002	n-Amyl acetate	DAILY MX	<= 2.09 lb/d	all year
002	Amyl alcohol	30DA AVG	<= 6.6 lb/d	all year
002	Amyl alcohol	DAILY MX	<= 16.1 lb/d	all year
002	N-Hexane	30DA AVG	<= .03 lb/d	all year
002	N-Hexane	DAILY MX	<= .05 lb/d	all year
002	Toxicity [acute], Ceriodaphnia dubia	DAILY MX	<= 1 N=0;Y=1	all year
002	Toxicity [acute], Pimephales promelas [Fathead Minnow]	DAILY MX	<= 1 N=0;Y=1	all year
002	Methyl cyanide [acetonitrile]	30DA AVG	<= 16.42 lb/d	all year
002	Methyl cyanide [acetonitrile]	DAILY MX	<= 40.24 lb/d	all year
002	Ethanol	30DA AVG	<= 6.6 lb/d	all year
002	Ethanol	DAILY MX	<= 16.1 lb/d	all year
002	Isopropanol	30DA AVG	<= 2.58 lb/d	all year
002	Isopropanol	DAILY MX	<= 6.28 lb/d	all year
002	Diethylamine	30DA AVG	<= 164.18 lb/d	all year
002	Diethylamine	DAILY MX	<= 402.41 lb/d	all year
002	Dimethyl sulfoxide, total	30DA AVG	<= 60.36 lb/d	all year
002	Dimethyl sulfoxide, total	DAILY MX	<= 147.28 lb/d	all year
002	Triethylamine	30DA AVG	<= 164.18 lb/d	all year
002	Triethylamine	DAILY MX	<= 402.41 lb/d	all year
002	Isopropyl ether	30DA AVG	<= 4.19 lb/d	all year
002	Isopropyl ether	DAILY MX	<= 13.52 lb/d	all year
002	n-Butyl acetate	30DA AVG	<= .8 lb/d	all year
002	n-Butyl acetate	DAILY MX	<= 2.09 lb/d	all year
002	Methanol, total	30DA AVG	<= 6.6 lb/d	all year
002	Methanol, total	DAILY MX	<= 16.1 lb/d	all year
002	4-Methyl-2-pentanone	30DA AVG	<= .32 lb/d	all year
002	4-Methyl-2-pentanone	DAILY MX	<= .8 lb/d	all year
002	n-Heptane	30DA AVG	<= .03 lb/d	all year
002	n-Heptane	DAILY MX	<= .08 lb/d	all year
002	Xylene [mix of m+o+p]	30DA AVG	<= .02 lb/d	all year
002	Xylene [mix of m+o+p]	DAILY MX	<= .05 lb/d	all year
002	Acetone	30DA AVG	<= .32 lb/d	all year
002	Acetone	DAILY MX	<= .8 lb/d	all year
002	Ethyl acetate	30DA AVG	<= .8 lb/d	all year
002	Ethyl acetate	DAILY MX	<= 2.09 lb/d	all year
002	Tetrahydrofuran	30DA AVG	<= 4.19 lb/d	all year
002	Tetrahydrofuran	DAILY MX	<= 13.52 lb/d	all year
002	Report due [yrmoda]	DAILY MX	<= 1 N=0;Y=1	all year