AG 2007 06 18 - Laserfiche WebLink

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such a manner that they could be discharged °°°~a°-'°"•• °- ~"°°°"° to the POTW ~raste~v+ate~ treatmenE systein. All floor drains located in process or materials storage areas must dischazge to the industrial user's pretreatment facility before connecting with the system. (d) When the Executive Director determines that a user(s) is contributing to the POTW any of the above enumerated substances in such amounts which may cause or contribute to interference of the POTW operation or pass through, the Executive Director shall: 1) Advise the user(s) of the potential unpact of the contribution on the POTW in accordance with Section 8.1; and 2) Take appropriate actions in accordance with Section 4 for such user to protect the POTW from interference or pass through. 2.2 National Cateeorical Pretrea[ment Standards Users subject to categorical pretreatment standazds are required to comply with applicable standards as set out in 40 CFR Chapter 1, Subchapter N, Parts 405-471 and incorporated herein. (a) Where a categorical pretreatment standard is expressed only in terms of either the mass or the concentration of a pollutant in wastewater, the Executive Director may impose equivalent concentration or mass limits in accordance with 40 CFR 403.6(c). (b) When wastewater subject to a categorical pretreatmem standazd is mixed with wastewater not regulated by the same standazd, the Executive D'uector shall impose an alternate limit using the combined waste stream formula in 40 CFR 403.6(e). (c) A user may obtain a variance from a categorical prefreatment standazd if the user can prove, pursuant to the procedural and substantive provisions in 40 CFR 403.13, that Factors relating to its dischazge aze fundamentally different from the factors considered by EPA when developing the categorical pretreatment standard. (d) A user may obtain a net gross adjustment to a categorical standard in accordance with 40 CFR 403.15. 2.3 Industrial Waste Survev and Local Limits An Industrial Waste Survey is required prior to a user discharging wastewater containing in excess of the following averaee ~aily discharge limits. BOD -- 300 MG/L COD - 675 MG/L TSS -- 2501-~5 MG/I. NH3 - I S MG/L Aluminum - 1.80 MG/L Arsenic -0.003 MG/I. Cadmium - 0.003 MG/L Copper - 0.090 MG/L Chromium - 0.020 MG/L C~anide - 0.015 A.04-~ MG/L Lead - 0.049 MG/L 17 ~"`1