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19. Ft Secondary container double-walled tanks (includes intercepti00 <br /> and detection systems„ tion 2633 (f)] <br /> A- oa:k=ill in secondary container. (Section 2635 Cc) 1-81 <br /> B. Fo,e s era of granular material used as backfill for primary container(s) complies Section 2631 <br /> (g). ;*-Sineering data to support capacity requirement). <br /> C, Two o; more primary containers within secondary container. (include infor=ti-n on product <br /> ca:=.tibil ity) <br /> D. seca-::ry container capable of precluding highest anticipated groundwater. <br /> 1 . Se a i ry container sloped to a monitoring sLM from which leakage or precipitatian can be detected <br /> and -ri=ved. <br /> F. Water ;'ez corner which extends at least a foot beyond each boundary of the sc:a-:ary container <br /> exca�ztion, sloped to drain away from excavation. <br /> 20. + Secondary container(s) thick, ss, .density, composition, product compatibility. <br /> Sized to contain releases from primary containers to allow sufficient time for detection and removal. <br /> [section 2631 (c)7 <br /> 21. Secondary container(s) vel metric requirements, [Section 2631 (e) (1) <br /> and (2)3 <br /> A. Single primary containers = 10()X. <br /> B. MuLtipie primary containers = 150X of largest primary container or 10% above aggregate. <br /> 22. Secondary container(s) ope^s to rainfall. [ Section 2631 (f)3 <br /> Volumetric r e,�uirec+ents = 24 hours of 100 year storm in addition to primary container voLtmcs. <br /> 23. Secondary container f; or. [Section 2631 (i)] <br /> A. Const;xted on firm base. <br /> t S. sloped to collection sump ( 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 /> Cb) 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 /> y� capture, or mask constituents to be monitored. <br /> 24- Membrane liner specifications. [Section 2631; k, 1, and m3 <br /> 6 <br />