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WASTE ANALYSIS PLAN <br /> INTRODUCTION <br /> This Waste Analysis Plan is for the chromium treatment system operating under Permit By Rule, <br /> located at Applied Aerospace Structures Corp., 3437 S. Airport Way, Stockton, CA 95206. The <br /> Waste Analysis Plan is required under CCR 66265.13(b). <br /> FACILITY CONTACT INFORMATION <br /> The facility contact is Lon Kitagawa, Environmental Coordinator for Applied Aerospace <br /> Structures Corp. (AASC). Telephone: 209-983-3339. Mailing address: PO Box 6189, <br /> Stockton, CA 95206. Email: lkitagawakaascworld.com <br /> FACILITY DESCRIPTION <br /> AASC is an aerospace company that manufactures and assembles aerospace parts and <br /> components. Some of the manufacturing requires processes to prevent corrosion of aluminum <br /> parts using chromium contaminated solutions. The chromium treatment system operates under <br /> Permit By Rule. <br /> TREATMENT DESCRIPTION <br /> Aqueous solutions containing chromium VI from the alodizing process and water scrubber unit <br /> are pumped into a 1,300 gallon capacity polyethylene tank for batch treatment. Once the tank is <br /> filled to around 1,000 gallons, it undergoes the following treatment processes: reduction of <br /> hexavalent chromium to trivalent chromium using an iron sulfide product (ISS 850), pH <br /> adjustment using either sulfuric acid or caustic soda, addition of flocculant (SWT-556), gravity <br /> settling, and pumping through a filter press to remove water creating a solid hazardous waste <br /> filter press "cake". One to two 55 gal. drums are generated per treatment cycle. The filter press <br /> "cake" is drummed and hauled off site by a registered transporter and disposed of at a licensed <br /> TSDF. <br /> CONSTITUENTS TO BE ANALYZED <br /> The constituent to be analyzed is chromium, as this is the authorized wastestream for treatment <br /> under Permit By Rule. <br /> TEST METHODS <br /> EPA test method 200.7 will be used to determine chromium levels at the points of discharge <br /> before entering the chromium treatment tank and to ensure the proper tiered permitting category. <br /> EPA test method 200.7 will also be used initially to determine chromium levels from the <br /> discharge tank after treatment to verify that the treatment process is effective. Only certified labs <br /> authorized to conduct EPA test method 200.7 will be used. After an initial determination that the <br /> treatment process is effective, AASC's lab will perform chromium analyses using atomic <br />