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Secondary Containment Assessment Page A: <br /> Overhead view: <br /> vP4' i �VC�a� /�✓ea '✓ I <br /> � -3 111-6 � i� /g �- lir <br /> Cross sectional'(lateral)view: <br /> `N O <br /> M 3 D <br /> Volume calculations: <br /> Tank volume (largest tank): 10,300 gallons. <br /> Containment volume (sum of areas 1, 2& 3) = 14,544 gallons (gross) <br /> Less tank volume= 846 gallons, containment volume= 13,698 gallons (net) <br /> Volume/inch= 13698 gal/24 in= 570.75 gal/in <br /> Excess volume= 13698 - 10300 gals. equivalent to 3398 gal/570.75 gal/in = 6 ins. <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 walls with re-bar. The containment area does not have <br /> cracks or gaps to allow the escape of spilled material. Area 1 (East end) is connected to <br /> area 2 by an open pipe, and area 2 is connected to area 3 (West end)by an open 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 10,300 gallon wastewater <br /> tank and ancillary equipment. Initials. /e AS <br /> California Tank Lines, Inc. Wastewater Storage Tank and Caustic Tank <br />