(A) (1) Pretreatment will be required in the following instances, and the Public Works Director shall submit to the applicant the pretreatment levels which must be obtained:
(a) If the Director determines upon the initial application for a permit under this subchapter that the proposed industrial waste must be pretreated by the applicant to lower the level of any of the components of the industrial waste before discharge to the town sewer;
(b) If the town must improve the discharge from its waste water treatment plant to the receiving stream as a result of directives from federal or state regulatory agencies, orders, or judgments from courts of competent jurisdiction, or changes in the discharge permit for the town’s waste water treatment plant or plants, then and in that event the Director will require that a permit holder install or enlarge pretreatment facilities to lower the affected component of the permittee’s industrial waste discharge;
(c) If any waste water prohibited under the conditions of this subchapter is produced, such producer shall pretreat the waste water to the extent required to comply with the standards established in this subchapter before discharging to any town sewer; or
(d) If the Director determines that a permittee, because of plant expansion and/or changes in plant operations, has increased either the strength or volume of the discharge, the Director may require additional pretreatment to lower the level of the volume and/or any components of the industrial waste before discharge, unless such permittee has previously made industrial cost recovery payments for reservation of additional industrial capacity.
(2) Pretreatment facilities required under the foregoing subsections of this section shall be provided, operated, and maintained at the permit holder’s expense.
(B) Any sludge or other material removed from the industrial waste by the pretreatment facility shall be disposed of in accordance with applicable federal, state, and local laws.
(C) (1) Dilution of waste discharged to the town sanitary sewer system is prohibited, whether accomplished by the combination of two or more waste streams by a producer or producers or by the addition of other liquids solely for the purpose of diluting the quality of the waste discharge.
(2) One or more producers may, upon application and approval by the Public Works Director, combine industrial waste streams prior to discharge to the town sanitary sewer system if, and only if, such combination of industrial waste streams produces a combined discharge of better quality than the two industrial waste streams would have been if discharged separately. However, if one or more producers are allowed to mix industrial waste streams to produce a better discharge, the user charge established in this subchapter based on the quality of its industrial waste streams prior to combination shall be paid to the town.
(D) (1) Detailed plans showing any pretreatment facilities shall be submitted to the Director for approval before construction of the facilities. The review of such plans will in no way relieve such permit holders from the responsibility of modifying and operating the facilities to produce an effluent complying with the established conditions of the permit.
(2) Any subsequent, significant changes in the approved facilities or method of operation shall be reported to the Director and the Director of the Department of Public Health, and must be reviewed and approved by the Director as complying with the provisions established in this subchapter.
(E) After the construction plans for such pretreatment plants have been approved and a permit issued, the plans shall be placed on file in permanent, reproducible form with the Director, without cost to the town, before a building permit will be issued.
(F) The town will enforce federal pretreatment regulations as set forth in 40 C.F.R. part 403.
(Ord. 89-07, passed 8-24-1989)