§ 51.082 PROHIBITED DISCHARGES TO PUBLIC SEWER SYSTEM.

   (A)   Generally. No user shall discharge, cause to be discharged, or allow to be discharged into the system any of the following.

   (B)   Specifically.

      (1)   Pollutants which create a fire or explosion hazard in the system, including, but not limited to, pollutants with a closed cup flashpoint of less than 140°F (60°C), as determined by a Pensky-Martens Closed Cup Tester, using the test method specified in ATSM standard D-93-79 or D-93-80k (incorporated by reference, see Section 260.11) or a Setaflash Closed Cup Tester, using the test method specified in ATSM Standard D-3278-78 (incorporated by reference, see Section 260.11) and pollutants which cause an exceedance of 10% of the lower explosive limit (LEL) at any point within the system;

      (2)   Pollutants which result in the presence of toxic gases, vapors, or fumes within the system in a quantity that may cause acute or chronic health and safety problems for workers;

      (3)   Pollutants which cause or may cause corrosive structural damage to the system, and in no case wastewater with pH lower than 5.0 or higher than 10.0;

      (4)   Solid or viscous pollutants in amounts which could cause or do cause obstruction to flow or interference in the system;

      (5)   Any pollutants, including oxygen-demanding pollutants, released in a discharge at a flow rate and/or pollutant concentration which will cause or may cause interference in, the system;

      (6)   Pollutants which may cause or do cause:

         (a)   Impairment of the strength or durability of structures in the system;

         (b)   Restriction of hydraulic capacity of structures in the system; and/or

         (c)   Unsafe conditions to personnel in the inspection or maintenance of structures of the system or unsafe conditions to the general public, with respect to the collection system.

      (7)   Heat in amounts which will inhibit biological activity in the system resulting in interference, but in no case heat in the quantities that the temperature at the system treatment plant exceeds 40°C, 104°F, unless the State Director, upon request of the system, approves alternate temperature limits;

      (8)   Pollutants which cause or may cause pass through or interference, including petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin in amounts that cause or may cause interference or pass through;

      (9)   Any pollutants which exceed the limitations set forth in a categorical pretreatment standard;

      (10)   Any noxious or malodorous liquids, gases, or solids which either singly or by interaction are capable of creating a public nuisance;

      (11)   Any pollutant introducing colors not removed in the treatment process, such as but not limited to, dye wastes and vegetable tanning solutions;

      (12)   Any unpolluted water, non-contact cooling water, stormwater, groundwater (contaminated and uncontaminated), or surface water, unless separate system facilities are available and identified for the discharges;

      (13)   Any radioactive wastes in harmful quantities as such quantities are defined by applicable state and federal regulations;

      (14)   Any solvent extractables (grease, fat, oil, or other freon soluble materials) in excess of a daily average of 50 mg/l;

      (15)   Any grease, oil, or other pollutants that will become solid or viscous at a temperature of 60°C or below after being discharged into the system;

      (16)   Any insoluble substance retained by a standard No. 8 sieve or having any dimension greater than 1/2 inch;

      (17)   Insoluble substances having a specific gravity greater than 2.65;

      (18)   Improperly shredded garbage;

      (19)   Sludge which results from a treatment process unless the Supervisor has determined that it is amenable to treatment by the system without application of unusual means or expense; and

      (20)   Discharges greater than the following concentrations of specific pollutants are prohibited:

 

Daily Maximum (24-Hour Composite)
BOD	250 mg/l
Total Suspended Solids	250 mg/l
Total Phosphorus	10 mg/l
COD	500 mg/l
TKN	40 mg/l

Compound	4-Day Daily Average	Daily Maximum	Instantaneous Maximum (grab)
Inorganics:
Total Arsenic, µg/l	380	380	1,400
Total Cadmium, µg/l	16	40	40
Total Chromium, µg/l	500	2,000	11,000
Hexavalent Chromium, µg/l	46	180	800
Total copper, µg/l	350	1,100	2,300
Total Cyanide, µg/l	15*	60*	1,400
Total Lead, µg/l	83	330	11,000
Total Mercury, µg/l	ND(1)	ND(1)	52
Total Nickel, µg/l	440	1,800	4,000
Total Silver, µg/l	10	40	350
Total Zinc, µg/l	1,300	3,400	5,600
Organics:
Polychlorinated biphenyls, µg/l	ND(2)	ND(2)	86
Tetrachloroethylene, µg/l	340*	1,400*	4,000
Trichloroethylene, µg/l	3,700*	11,000*	11,000
Pentachlorophenol, µg/l	220*	430*	720
2, 3, 7, 8 Tetrachlordibenzo-p-dioxin	-	-	ND(3)
2, 3, 7, 8 Tetrachlorodibenzo-furan	-	-	4,000
NOTES TO TABLE:
(1) - Non-detectible per U.S. EPA Method 245.
(2) - Non-detectible per U.S. EPA Method 608.
(3) - Non-detectible to 10 ppq detection level.
* - Based on daily mean calculated from a minium of 4 appropriately spaced grab samples in lieu of 24-hour composite.

 

(Ord. 12.00, passed 9-14-1999) Penalty, see § 10.99