Sec. 28-45.1. Individual industrial user permits.
A. Industrial users that discharge an industrial discharge into the POTW and are designated as a significant industrial user by the Director must obtain a Class A wastewater discharge permit and provide the pretreatment necessary to comply with the pretreatment standards, pretreatment requirements, and best management practices imposed by this chapter.
B. Industrial users who are not significant industrial users may be required to obtain a Class B wastewater discharge permit if the Director determines the industrial discharge causes or has the reasonable potential to cause harm or damage to the POTW, worker safety, public safety, or the environment. Industrial users who may be required to obtain a Class B wastewater discharge permit include:
1. Users that discharge the equivalent strength of 25,000 gallons per day of domestic waste as measured by BOD and TSS;
2. Dischargers of polluted groundwater; and
3. Users discharging substances with limits identified in Section 28-8.
C. The Director may use a Class C wastewater discharge permit to control an industrial user subject to categorical pretreatment standards as a non-significant categorical industrial user rather than a significant industrial user on a finding that the industrial user never discharges more than 100 gallons per day of total categorical wastewater (excluding sanitary, non-contact cooling and boiler blowdown wastewater, unless specifically included in the pretreatment standard).
1. The industrial user must meet the following conditions:
a. Prior to the Department’s finding, it has consistently complied with all applicable categorical pretreatment standards and requirements;
b. Annually submits the certification statement required in Section 28-44.1(C)(2) together with any additional information necessary to support the certification statement; and
c. Never discharges any untreated concentrated wastewater.
2. Upon a finding that a user meeting the criteria has no reasonable potential for adversely affecting the POTW’s operation or for violating any pretreatment standard or requirement, the Department may at any time, on its own initiative or in response to a petition received from an industrial user, and in accordance with procedures in 40 CFR 403.8(f)(6), determine that such user should not be considered a significant industrial user.
3. Upon a determination of non-significant categorical industrial status, the user must submit an application for a Class C wastewater discharge that contains the information specified in the application form or such other information as may be requested by the Director. (Ord. No. G-3662, § 1; Ord. No. G-6740, § 1, 2020)