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_ . _________r__. _� <br /> - D �°3 � � � <br /> An automatic ahut-oYt device ehall be inetalled that etope <br /> . the flow of produot beinq delivered to the �nderqround <br /> • etorage eank when the underground tank is full. <br /> ( 4.7.5.4 Above-Ground Storage Tanks <br /> � <br /> ' Above-ground etoraqe tanka eha11 be plaeed Ln a bermed, <br /> � impervioue area. The bermed area ahall be paved with <br /> � Portland cement aoncrete for permanent inetallatlone. The <br /> i bermed area ehall be larqe enough, and the berme hlgh <br /> enouqh, to contain 110 parcent of the largeet tank'e total <br /> ' voluma or 101 of the total tank volume, vhichever is <br /> � lnrgeet. - <br /> , An outlet ahall he pravided from the bermed area to allow <br /> - dralnage oP acaumulated rain water. The outlet ehall be � <br /> , equipped with a menually operated valve that ehall be kept ; <br /> � in the cloeed poeition except when the area is being drained . <br /> � of accumulated rain water. Aeeumulated rain vater ahall ba �' <br /> releaeed frequently durinq the wet aeaeon. ; <br /> t One of tha following iteme ehall be inetalled to prevent �, <br /> � overfi111nq of the tank: an audible alarm eyetem, triqqered <br /> by a Liquid level aeneor, ta alert the operator when the <br /> • tank has bmen filled to 95 pereent eapacityJ or an automatie <br /> '� ehut-of! device that atope the flow of product beinq <br /> delivered to the storaqe tank when the :ank le full. <br /> � <br /> � <br /> � <br /> r7, <br /> I <br />