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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 . Ikitagawa@aascworld . com <br /> FACILITY DESCRIPTION <br /> AASC is an aerospace company that manufactures and assembles aerospace pants 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 a ferrous 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 . pH will also be measured after treatment and before discharge . <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 . All solutions <br /> being analyzed for chromium contain less than 0 . 5 % solids . Only certified labs authorized to <br /> conduct EPA test method 200 . 7 will be used . After an initial determination that the treatment <br /> i <br /> r <br /> i <br />