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Section 1. Background <br /> Premier Finishing {Premier) has obtained a Permit By Rule [Title 22 California Code of <br /> Regulations (CCR), Division 4.5, Chapter 45,Article 1] for the on-site treatment of aqueous waste <br /> containing metals. Chromate conversion coatings are performed on metal products where the metal <br /> surface is converted into a desired coating through a chemical process. The conversion coating is <br /> performed to prevent corrosion and/or to create effective adhesion properties for other subsequent <br /> coatings, such as powder coating. The metal products are dipped into one or more chemical <br /> immersion baths, depending on the metal properties and desired coating finish and rinsed in a <br /> water bath after each chemical dip. This process is accomplished on-site via the plating line which <br /> consists of twelve tanks, eight of which are rinse water tanks (Tanks#2,#3, #4, 95,#6,47,#8, and <br /> #9). Two of the eight rinse water tanks are emptied daily (Monday — Thursday), this rinse water <br /> from the plating line process rinse tanks are chained and pumped to a 750-gallon treatment tank to <br /> remove the heavy metals. [Attachment A—Plating Line Schematic and Points of Generation] <br /> A flocculent is added to the treatment tank to precipitate the heavy metals from the water. The <br /> precipitate is then pumped into a filter press to remove excess water. The separated non-hazardous <br /> wastewater is cycled through the onsite wastewater treatment facility and sampled before being <br /> discharged from the facility to the City sewer. [Attachment B--Wastewater Discharge Permit] <br /> Premier Finishing Waste Analysis Plan <br /> 1 <br />