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0 <br />19., f A secondary <br />container other than le -walled tanks [includes interception <br />and detection systems). [Section 2633 tf)3 <br />A. Backfill in secondary container. (Section 2635 (c) 1-83 <br />B. Pore space of granular material used as backfill for primary container(s) complies with Section 2631 <br />(g). [Engineering data to support capacity requirement). <br />C. Two or more primary containers within secondary container. (include information on product <br />c tibitity) <br />D. Secondary container capabLe of precluding highest anticipated groundwater. <br />E. Secondary container stoped to a monitoring sump from which leakage or precipitation can be detected <br />and removed. <br />_ F. Water tight comer which extends at least a foot beyond each boundary of the secondary container <br />excavatio', stoped to drain away from excavatio'. <br />20. Secondary container(s) thickness, density, composition, product compatibiLity. <br />Sized to contain unauthorized releases from primary containers to alta+ sufficient time for detection and removal. <br />[Section 2631 (03 <br />?1. All Secondary container(s) volumetric requirements: [Section 2631 (e) (1) <br />and (2)3 <br />i� A. Single primary containers a 100%. <br />® B. Multiple primary containers = 150% of largest primary container or 10% above aggregate. <br />2. tj�A Secondary containers) open to rainfall. [ Section 2631 Ml <br />VOLumetric requirements : 24 hours of 100 year storm in addition to primary container volumes. <br />3. FQ Secondary container floor. [Section 2631 (03 <br />A. Constructed on firm base. <br />e. Stoped 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 />(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 wilt not donate, <br />capture, or mask constituents to be monitored. <br />24. 14 Membrane liner specifications. [Section 2631; k, 1, and ml <br />Rl <br />