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MORRIS <br /> SHAFFER <br /> E N G I N E E R I N G <br /> July 17, 2018 <br /> Brandon Griffith <br /> Metal Finishing Solutions, Inc. <br /> 1325 El Pinal Drive <br /> Stockton, CA 95205 <br /> Tank System Integrity Report <br /> Morris Shaffer Engineering Project # 18211 <br /> On July 16, 2018, an engineer from our office visited Metal Finishing Solutions in Stockton to conduct a system <br /> integrity assessment of the following tanks, associated piping, and secondary containment of the Waste <br /> Treating Area containing hazardous waste . <br /> Tank # Description <br /> WT-T1 Acid Waste Cylindrical CAR 000285262 <br /> WT -T2 Alkaline Waste Cylindrical CAR 000285262 <br /> C1X-T1 System Feed Tank Cylindrical CAR 000285262 <br /> C1X-T2 DI Holding Tank Cylindrical CAR 000285262 <br /> FN -T1 Neutralization Stage 1 Cylindrical CAR 000285262 <br /> FN -T2 Neutralization Stage 2 Cylindrical CAR 000285262 <br /> Based on those inspections and our evaluation, we are providing this written certification for the above <br /> mentioned tanks following the guidelines of Title 22 California Code of Regulations, Chapter 15 , Article 10, <br /> Section 66265 . 192 . <br /> Our system integrity assessment consisted of a visual inspection of the tanks, associated piping, mechanical <br /> pumps, and the secondary epoxy coated containment berm. At the time of inspection, the above mentioned <br /> tanks were filled; therefore, we were unable to inspect the inside of the tanks. While our external inspection of <br /> the tanks concluded that the tanks appeared to be in good condition, we recommend that an internal inspection <br /> of the tanks be completed when it is feasible. No leak tests, internal inspection, or other tank system integrity <br /> examination (i . e ., ultrasonic, volumetric tank test) pipeline pressure, etc) were performed. No evidence of <br /> leaking was noticed during our visual inspection . Only the filter press columns showed signs of corrosive <br /> damage. We recommend that the rust be removed, and the steel be primed and painted with a suitable <br /> corrosive resistive paint. <br /> 1300 INDUSTRIAL ROAD , SUITE 14 , SAN CARLOS , CA 940701 ( 650) 595-2973 FAX ( 650 ) 595-2980 <br />