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Secondary Containment Assessment Page A: <br /> Overh4a view: <br /> Cross sectional (lateral)view: <br /> °0 <br /> Volume calculations: <br /> Tank volume(largest tank): 7,400 gallons. <br /> Containment volume(sum of areas 1,2&3)— 14,363 gallons(gross) <br /> Less tank volume_376 gallons,containment volume= 13,987 gallons(net) <br /> Volume/inch= 13987 gal/24 in= 582.8 gal/in <br /> Excess volume= 13987-7400 gals. equivalent to 6587 gal/582.8 gal/in = 11.3 in <br /> 24 hr.,25 yr. storm=2.4 to 2.6"for most of San Joaquin Valley. <br /> Therefore,secondary containment volume is adequate. <br /> Design of containment area: Secondary containment is provided by a number of areas <br /> enclosed by poured concrete, or concrete block walls with re-bar. The containment area <br /> does not have cracks or gaps to allow the escape of spilled material. Area 1 (East end) is <br /> connected to area 2 by an open 6 in. pipe,and area 2 is connected to area 3 (West end)by <br /> a 6 in. pipe. <br /> Site Security: The entire site is fenced. The gate is locked when company personnel are <br /> not present. <br /> Secondary Containment findings:The secondary containment system is of sufficient <br /> capacity and condition for the containment of releases from the 7,400 gallon wastewater <br /> tank and ancillary equipment. Initials: %S <br /> California Tank Lines,Inc. Wastewater Processing'Tanks(3) <br />