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Hazardous Waste Tank System July <br /> Written Assessment per CCR Title 22 <br /> Applied Aerospace Structures, Inc., Stockton, CA 95206 2017 <br /> Volume calculation Chrome Treatment System Fl- <br /> Secondary <br /> Containment Volume: 1 ,586 gallons AUG 0 2 2017 <br /> Largest Tank Volume: 1,170 gallons <br /> Aggregate Volume Including Filter Press & Piping: 1,402 gallons�:hl�„�� r„ ����Ai HEALTH <br /> of Aggregate: 140 gallons r-r=n° ,T <br /> 25 year 24 Hour rain event: Indoors, does not apply. <br /> Secondary Containment Design: The secondary containment is a diked <br /> containment made on concrete. The concrete walls of the dike are six inches <br /> thick and a poured directly to the buildings concrete floor. The containment is <br /> inspected daily by Applied Aerospace Structures employees. <br /> Visual inspection of containment area: <br /> The secondary containment is coated concrete which is impermeable. The <br /> containment is free of breaks, cracks or other defects. <br /> The containment is rinsed of spills on a routine basis. <br /> The pocket sump contains hazardous waste and is not double walled. The <br /> pocket sump must have secondary containment <br /> Site Security: The neutralization system is indoors and with facility security. <br /> The area is routinely patrolled by the Stockton Police Department... <br /> Secondary Containment findings: The secondary containment system is of <br /> sufficient capacity and condition for the containment of releases from all.t pks <br /> and ancillary equipment. Initials: J <br /> Strandberg Associates 1(866) 388-0404 rwaterauy@rwaterguy.com 38 <br />