§ 154-301. Specific pollutant limitations.

(a)

Limitations on wastewater strength. No person or user shall discharge, or cause to be discharged, directly or indirectly, wastewater at such concentration or mass as to cause interference or pass-through. The limits on process discharges by the user listed below may be used as a guide in design and plant control, but may be altered by the commissioner in the event of a discharge causing interference or pass-through. Allowable pollutant levels are provided as concentration limits and, for industrial users having discharges of less than 10,000 gallons per day (gpd), as mass limits. Industrial users classified as food processors under section 154-196(23) of this article are granted a mass limit on phosphorus on discharges under 25,000 gallons per day (gpd). No person or user shall discharge, or cause to be discharged, wastewater containing in excess of the following limits.

Parameter	Daily Maximum Concentration (mg/L) (24 hour composite)	Daily Maximum Mass (Lb's) (under 10,000 gpd only)
Arsenic	0.195	0.016
Beryllium	0.0005	0.0004
Cadmium	0.335	0.028
Chromium	2.25	0.187
Copper	3.104	0.259
Lead	0.653	0.055
Mercury	0.002	0.0002
Nickel	1.79	0.149
Selenium	1.31	0.109
Silver	1.47	0.123
Zinc	4.473	0.373
	Concentration, mg/1(**) Grab Sample	Daily Maximum Mass (Lb's) (under 10,000 gpd only)
Cyanide	0.894	0.075
	Daily Maximum Concentration (mg/L) (24 hour composite)	Daily Maximum Mass (Lb's) (under 25,000 gpd only)
Phosphorus	10.0(*)	2.0
*Exception for food processing industry: Food processing industry may discharge up to 25 mg/l phosphorous. As measured in discharge from manufacturing process only, excluding domestic waste or unpolluted discharges.

 

(b)

The maximum levels listed below are based on fume toxicity standards. No person or user shall discharge or cause to be discharged any waters, wastewaters, or wastes containing concentrations in excess of the following.

Parameter	Maximum Allowable Concentration (mg/l)
Benzene	0.13
Bromomethane	0.002(i)
Carbon disulfide	0.06
Carbon tetrachloride	0.03
Chlorobenzene	2.35
Chloroethane	0.42
Chloroform	0.42
Chloromethane	0.007(i)
1,2-Dichlorobenzene	3.74
1,4-Dichlorobenzene	3.54
1,1-Dichloroethane	4.58
Trans-1,2 Dichloroethylene	0.28
1,2-Dichloropropane	3.65
1,3-Dichloropropane	0.09
Ethyl benzene	1.59
Ethylene dichloride	1.05
Formaldehyde	0.07
Hexacloro-1, 3-butadiene	0.002(i)
Hexachloroethane	0.96
Methylene chloride	4.15
Toluene	1.35
1,2,4-Trichlorobenzene	0.43
1,1,1-Trichloroethane	1.55
Trichloroethylene	0.71
Trichlorofluoromethane	1.22
Vinyl chloride	0.003(i)
1,1-Dichloroethylene	0.003
Aroclor 1242	0.01
Aroclor 1254	0.005

 

(i) In cases where the listed maximum allowable concentration is less than the detection limit and the sample result is also less than the detection limit, the user shall report "less than detection limit."

(Ord. No. 1998-71, § 2, 10-13-98; Ord. No. 2007-35(07-O-0937), §§ 1, 2, 6-12-07)