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19. Secondary containerdouble-walled tanks (includes interceptiis <br /> and detection syste ti:. ion 2633 (f)] <br /> A. 6actf7ll in secondary container. [Section 2635 (c) 1-81 <br /> B. Fere s ae of granular material used as backfill for primary container(s) complies .ith Section 2631 <br /> ($). _Ny neering data to support capacity requirement]. <br /> C. Two a more primary containers within secondary container. (include inforeti:ian on product <br /> caxt ibi l i ty) <br /> D. Secati:Y container capable of precluding highest anticipated groundwater. <br /> E. secori..,- container sloped to a monitoring sump from which leakage or precipitatiaz can be detected <br /> and rrcc+r . <br /> _ F. Va:er :' t corner which extends at least a foot beyond each boundary of the se:zw�ai"y container <br /> exex�ztjoj% sloped to drain away from excavation. <br /> 20. N� Secondary ccntainer(s) thick.- s, 3ensity, composition, product compatibility. <br /> [I Sized to containcrs:ha i:ed releases from primary containers to allow sufficient time for detect'On and removal. <br /> [section 2631 (c)] <br /> 21. Secondary containers) vnlunetric requirements: [Section 2631 (e) (1) <br /> and (2)] <br /> A. Single ; icary containers = 100%. <br /> _ <br /> R. MultiYle primary containers = 15C% of largest primary container or 10% above aggreis:e- <br /> 22. Secondary container(s) c;oen to rainfall. [ Section 2631 (f)] <br /> Volunetric re;,,:irenents = 24 hours of 100 year storm in addition to primary container voLLrrs. <br /> 23. Secondary container f;cur. ISection 2631 (i)] <br /> A. Cor,,s:-xted on firm base. <br /> B. Sloped to collection sumo ( 1/8 inch per foot). <br /> (1) One or more access casings installed in sump. <br /> (a) Size to allow removal of collected liquid. <br /> (b) Extended to ground surface. <br /> (c) Covered with a locked waterproof cap or <br /> within a secured facility. <br /> (d) Thickness allows for anticipated stresses. <br /> (e) Construction materials are not weakened stored product or will not donate, <br /> capture, or mask constituents to be monitored. <br /> 24. � Membrane liner specifications. ISection 2631; k, 1, and ml <br /> 6 <br />