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fL ARCHITECTURE • ENGINEERING • ENVIRONMENTAL SERVICES <br /> INC. 11371Vortb McDowell Boulevard. Petaluma, CA 94954-1110 Telephone: (707) 765-1660 Faosimile.- (707)765-9908 <br /> John W.Johnson August 20,2003 <br /> Co-President S.Bravo Systems, Inc. <br /> Arexbithirecr 2929 Vail Avenue <br /> Commerce,CA 90040 <br /> Brian F.Zita <br /> Co-President RE: STATE REGISTERED PROFESSIONAL ENGINEER APPROVAL <br /> Architect CCR Title 23 Division 3, Chapter 16,Section 2631(d) <br /> AB2481 Requires secondary containment For all underground piping in an <br /> John B. Hicks UGT System <br /> Vice President <br /> BRAVO SINGLE WALL VAPOR VENT CONTAINMENT/RACK SYSTEM <br /> MODELS B-5004P,B-600, RS-500 <br /> Cecil R.Spencer <br /> 1 rce President I have examined and reviewed the following items on the Bravo single wall vapor vent <br /> containment with penetration fittings for installation at the interface of underground piping <br /> Regional Managers with the above ground vent risers. <br /> Jesse E. Macias 1. Detail drawings of the units. <br /> Roy W. Pedro 2. Installation Guide for units. <br /> Alan IC Shirnabukuro 3. Illustrations of containment sump with vent riser RS `Rack System'. <br /> John W. Strobel 4. A section removed from a containment sump for inspection of the construction. <br /> 5. Chemical compatibility data for Dion ISO 6631 <br /> Blythe %Wilson 6. Chemical compatibility for Derakane 411 <br /> Upon review the materials and construction it is my opinion and conclusion that sound <br /> engineering design and engineering of these products provide secondary containment of the <br /> vent piping at the interface of the vent risers. The RS alternate provides an integral support <br /> frame for the vent <br /> /risers. <br /> J21—;��s,�t;; <br /> .Ray OF a <br /> Sr. Civil Engineer F9� H. mYF. <br /> ,IFS RqF 60 <br /> T <br /> No.24,518 <br /> • CD 1) 131 oS <br /> CIVIL <br /> Off ces OF <br /> BELLEVUE, WA <br /> LA HABRA, CA <br /> MARTINEZ, CA <br /> PETALUMA, CA <br /> ROSEVILLE, CA <br /> SCOTTSDALE, AZ <br /> VANCOUVER, WA <br /> www.ri,ldesign.com C:\CIVIL\3rdPARTY"aRAVO\SWtvnaemunal-rl.cloc <br />