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• J U N 9 1988 ENVIROMENTAL TN Facility : Pacific Sell (UE-148) FERM1T/aEhZVCh6 Redwood and Sixth Sts. French Camp DETECTION OF LEADS IN SECONDARY SYSTEM The Joor Manufacturing , Inc . , Plasteel double-wall tank has a secondary containment capable of containing 110% of the primary container volume. The tank when installed will have a slope of 1/8" per foot (minimum) . A Ronan Model LS-3 liquid sensor will be located at the bottom of the secondary containment (annular space) on the deeper end . In the event of a leak , liquid will run down the bottom of the secondary container to be detected by the sensor. The sensor in the presence of a liquid will cause the Ronan Model X76S Leak Detector to activate an onsite aud- ible alarm and simultaneously telephone an alarm to Pacific Bell monitoring center . The secondary containment will hold the leaked liquid until recovery action can be taken . Recov- ery will be accomplished using suction pump, access to secondary containment is provided by annular space fill pipe . Notes concerning Joor double-wall tank manway ( sump) . The Joor Plasteel double-wall tank as ordered will have a 304" I . Q. manway collar welded on the top of the tank. L.B.M. E. Corporation will extend the manway to the manhole cover using a 30" red thread fiberglass pipe cut to fit , the joint sealed with fiberglass and epoxy . The manhole cover will be watertight thus creating a waterproof manway (sump) environment . The 3/4" black iron fuel return and suction lines contained in a single fiberglass secondary pipe leave the manway with an upward slope of 1/8" per foot (minimun) towards the building. if either fuel return or suction line develops a leak, the fuel will collect and run down secondary fiberglass pipe to manway. The liquid will be detected by a Ronan Model LS-3 liquid sensor plac- ed at bottom of manway and activate alarms .