O-1989-1663 - Laserfiche WebLink

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. e b. No person may discharge organic chemical to the public sewer (other than as stated in No. 11 above) except under the following conditions: (1) The Approving Authority shall assess the permittee's discharge as to the types and quantities of organic chemicals present. (2) The effects of each organic chemical shall be assessed as to interference and pollutant pass-through. (3) The Approving Authority shall determine that the permittee's discharge does not endanger the health and safety of sewage works employees and La Porte citizens. The discharge shall not contain types and quantities of organic chemicals which singly, or in combination, create an atmosphere in the sewer which constitutes a violation of employee exposure levels as stated in Occupational Safety and Health Regulations (29 CFR 1910.1000). (4) Using data and information obtained through 1-3 above, the Approving Authority shall establish discharge limitations for each organic chemical the permittee discharges or may discharge. These discharge limitations shall become a condition of the permittee's permit. c. If more stringent National Pretreatment Standards (NPS) exist for certain categories of industries or if more stringent NPS are promulgated for certain categories of industries by the U.S. EPA, the more stringent national standards will apply to the affected Permittee. . 13. Except in quantities, or concentrations, or with provisions as stipulated herein, it shall be unlawful for any person, corporation, or individual to qischarge waters or wastes to the public sewer containing the following: a. Free or emulsified oil and grease exceeding, on analysis, 200 mg/l (1,668 pounds per million gallons) of either, or both, or combinations of, free or emulsified oil and grease, if, in the opinion of the Approving Authority, it appears probable that such wastes: (1) Can deposit grease or oil in the sewer lines in such manner to restrict flow, (2) Can overload skimming and grease-handling equipment. ,(3) Are not amenable to bacterial action and will, therefore, pass to'the receiving waters without being affected by normal sewage treatment processes, or (4) Can have deleterious effects on the treatment process due to the excessive quantities. b. Any radioactive wastes greater than the allowable stipulated above. c. Dissolved solids greater than 500 mg/l including but not limited to: (1) sodium chloride; and (2) sodium sulfate; d. Materia~s which exert or cause the following: (1) Color or discoloration not amenable to treatment; (2) BOD exceeding 5,000 mg/l with a flow volume which produces interference; 11