<div class="chunk-title">Sec. 26-97. - National Categorical Pretreatment Standards.</div>
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               Users subject to categorical pretreatment standards are required to comply with applicable
               standards as set out in 40 CFR Chapter 1, Subchapter N, Parts 405â€”471 and incorporated
               herein.
               
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                  (1)
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                  Where a categorical pretreatment standard is expressed only in terms of either the
                  mass or the concentration of a pollutant in wastewater, the POTW director may impose
                  equivalent concentration or mass limits in accordance with 40 CFR 403.6(c).
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                  (2)
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                  When wastewater subject to a categorical pretreatment standard is mixed with wastewater
                  not regulated by the same standard, the POTW director shall impose an alternate limit
                  using the combined wastestream formula in 40 CFR 403.5(e).
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                  (3)
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                  A user may obtain a variance from a categorical pretreatment standard if the user
                  can prove, pursuant to the procedural and substantive provisions in 40 CFR 403.13,
                  that factors relating to its discharge are fundamentally different from the factors
                  considered by EPA when developing the categorical pretreatment standard.
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                  (4)
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                  A user may obtain a net gross adjustment to a categorical standard in accordance with
                  40 CFR 403.15.
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                  (5)
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                  A user may request a removal credit adjustment to a categorical standard in accordance
                  with 40 CFR 403.7.
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            <p class="historynote0">
               (Ord. of 9-26-94, Â§ 2.2; Ord. of 11-26-12, Â§ 8)
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