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� �� U� L;l l� u <br /> Conerete-filled, eteel pipe poeta ahall be eonetrveted and <br /> , Located where neceeeary to prevent vehiclea entering the <br /> fuelinq ieland area from etrikinq the gaeoline pumpe. <br /> yi't <br /> '� 4.7.5.3 Tanker Tranefer Areae: <br /> � Either a epill containment eyetem or an under-qround etoraqe <br /> ' tank overlill pcevention eyatem, ae aetailed in t.he <br /> v <br /> followinq eeetione, eha11 be provided for areae Where tanker <br /> W:.� traneport to under-ground atoraqe tanka occura. <br /> t.� <br /> ik� <br /> } <br /> � �� 4.7.5.3.1 Spill Containment Syetems <br /> �,. <br /> a <br /> ;�5 <br /> The tranefer area ahall be qraded to prevent the run-on of <br /> ;'r? etormwater from adjacent areae. <br /> ,�; . <br /> �;r "Trenah" or "valley" draina ehall be located at the <br /> '� perimeter of the tanker traneter area alonq the downhill <br /> � eide. The draine ahall route any runoff or apille throuqh a <br /> epill eontainment etructure conaietinq of a vault or larqe <br /> �� eatch baein with 250 qallone of Liva eapacity. Tha epill <br /> :_� containment etrueture ehall diaeharqe to the etorm drainage <br /> : <br /> 'r„ lyatetA. <br /> ;:7i <br /> �rjj The outlet of the spill containment etructure ehall be <br /> ;�; equippad with an AFL/clark Oil Stop vnlve, or approved <br /> ':� aqual, that allowe paeeaga of water but not of the praduct <br /> ,,s� beinq etored in the underqround atoraqe tanke. <br /> �: <br /> � The Lid of the epill aontainment etructure ahall ba dasigned <br /> ta vent vapore to the atmoepherc and ehall be conatructad of <br /> � non-aparkinq material. The pavamant around the Lid ahall be <br /> aloped or bermed eo prevent the run-on of etormwatar from <br /> adjacent areae. <br /> An audible alann eyetem, trigqared by a liquid leval aeneor, <br /> ehall be deeiqned and inetalled to alert an attendant if the <br /> tank fille to 95 pereent capaeity. <br /> ,� <br /> :i <br /> 4.7.5.3.2 Undazqround Starage Tank overfill Proteetion Syetem: <br /> :� <br /> A epill catchment baein aha11 be provided whieh aurrounde <br /> Rthe underground etorage tank'e fill pipa, prevanta the <br /> y� intlow of tha etored eubetanea into the eubeurtaca <br /> � anvironment, and draine minor overfille into the underqround <br /> :�; tank once volume becomee available. <br /> :i <br /> '� An audible elarm eyetam, triqqered by a liquid Level aeneor, <br /> ;�� ehall be daeiqned and inetallad to alert the tankor oporator <br /> , when the tank hae 6ean filled to 95 percent capaeity. <br />