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All of the secondary containment appears to be in very good operating order and in good shape. <br /> There is no evidence of breaks or cracks in the outer shell and all welds appear to be in good <br /> condition. The generator-fuel tank system is secured to the concrete pad,with%,in, anchors into <br /> the concrete thm steel plate anchor brackets and spring vibration reducing supports beneath the <br /> system. The concrete berm has minor cracks, but no spalling or cracks affecting the integrity of <br /> the berm. The berm also has a valve drain for draining rainwater from the berm, when <br /> necessary. Prior to draining,the rainwater should be inspected to ascertain if there is a <br /> petroleum sheen on the water. If there is a sheen,the water should be determined to be <br /> contaminated by petroleum product and properly removed as a hazardous waste. Containment <br /> capacity of the berm is approximately 125 gals. The inspection of the secondary containment of <br /> the fuel tank found no product in the secondary containment or in the berm, and therefore <br /> indicated no leaks from the primary vessel into the secondary containment. <br /> Tank Foundation and Support <br /> ConVault Tank. The foundation legs of the ConVault tank were closely inspected, and found <br /> to be free of any damage or defect. There were no cracks at the foundations which would appear <br /> to lead to affecting the <br /> integrity of the tank <br /> support system. While _..-. <br /> there are some minor rDa000. GALLOIV�. <br /> cracks in the pad, there <br /> were no cracks discovered <br /> emanating from any of the <br /> steel earthquake shoe <br /> anchor bolts, on the 6000 <br /> gal ConVault. The cracks _ <br /> appears slight and do not <br /> indicate any affect on the <br /> stability of the support <br /> system, nor of further <br /> spreading beyond its <br /> current length. As is ` y n4.t <br /> always the case, where <br /> there is a crack in the <br /> underlying pad, any cracks <br /> which emanate or connect to the earthquake shoes, should be monitored and repaired if they <br /> continue to expand,or appear to affect the stability of the system. If the support system should be <br /> impinged by further cracking or by a seismic event, then an engineered professional repair <br /> should be undertaken to repair or replace any condition which would affect the ability of the <br /> tanks to maintain their integrity or their stability. It is the normal condition of concrete slabs that <br /> they develop small hairline cracks over time as the ground beneath them is constantly in danger <br /> of shifting in a seismic zone, which is applicable to Stockton, CA. As such, a high degree of <br /> attention should be paid to any changes in the support system of the tanks. A weakened pad <br /> experiencing a seismic event could cause the tank or tanks to shift from their foundational <br /> supports and as a result,experience a spill or a leak. It is noted herein that there does not appear <br /> to be such a danger in the immediate condition of the pad and supports, but only that slight <br />