(A) The following pollutant limitations are established to protect against pass through and interference. No person shall discharge wastewater containing in excess of the following daily maximum concentrations based upon a flow proportional sampling or time proportional sampling. Additionally, no person shall discharge wastewater containing in excess of the following maximum concentrations times a multiplier of l.5 based upon a grab sample. The 1.5 grab sample multiplier does not apply to Hex. Chromium, Cyanide and Phenols in that analytical procedures do not allow for composite techniques to be applied to these parameters. For Hex. Chromium, Cyanide and Phenols, three grab sample results shall be analyzed with results not to exceed the following noted limitations:
(1) 30 mg/l: Ammonia;
(2) 0.04 mg/l: Arsenic (total);
(3) 200 mg/l: BOD5;
(4) 0.20 mg/l: Cadmium (total);
(5) 900 mg/l: COD5;
(6) 4.0 mg/l: Total Chromium;
(7) 0.6 mg/l: Copper;
(8) 0.025 mg/l: Cyanide (total);
(9) 0.113 mg/l: Lead (total);
(10) 0.0002 mg/l: Mercury (total);
(11) 0.3 mg/l: Nickel;
(12) 200 mg/l: Fats, Oils & Grease;
(13) 0.5 mg/l: Silver;
(14) 200 mg/l: TSS (Total Suspended Solids);
(15) 2.0 mg/l: TTO (Total Toxic Organics);
(16) 2.0 mg/l: Zinc (total);
(B) The above limits apply at the point where the wastewater is discharged to the POTW. All concentrations for metallic substances are for total metal unless indicated otherwise. The Superintendent may impose mass limitations in addition to, or in place of, the concentration-based limitations above.
(C) Upon the promulgation of the National Categorical Pretreatment Standard (NCPS) for a particular user, the said standard, if more stringent than the limitations imposed under this chapter for sources in that category, shall, when effective, immediately supersede the limitations and conditions imposed under this chapter. The Superintendent shall notify all known affected users of the applicable permitting and reporting requirements under 40 CFR 403.12.
(Ord. 2000-11B, passed 11-28-00)