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4� <br />HL <br />A R C <br />l I 1 T L C'1'U E t L E N G I N r. I R I V t; E. \ V I R 0 N N4 E :v r A L 5 r•. R v 6 C E S <br />' GROUP INC. <br />11.371Vurtlr.11cDowell Ratilenrrrd. Prtrtlrema. (",'I 949i4-1110 Telephone: (707) 7651-1660 Facsimile: (707) 765-990& <br />John W. Johnson <br />August 20, 2403, Amended 9117104 <br />Co -President <br />S. Bravo Systems, Inc. <br />Architect <br />2929 Vail Avenue <br />Commerce, CA 90040 <br />Brian E Zita <br />Co -President <br />RE: STATE REGISTERED PROFESSIONAL ENGINEER APPROVAL <br />Architect <br />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 <br />UST System <br />Vice President <br />BRAVO DOUBLE WALL VAPOR VENT CONTA NNIENT-SYSTEM <br />MODELS B -500 -D -AB, B -600 -D -AB (With out rack stand) and same Models <br />Cecil R. Spencer <br />WITH RS ADDED (Designates with rack stand) <br />Vice President <br />MAY BE USED AS PIPING TRANSITION SUMP FOR UG TO AG <br />Regional Managers <br />I have examined and reviewed the following items on the Bravo double wall vapor vent <br />containment with double wall penetration fittings for installation at the interface of <br />Jesse E. Macias <br />underground piping with the above ground vent risers. <br />Roy W. Pedro <br />Alan K. Shitnabukuro <br />1. Detail drawings of the units. <br />John W. Strobel <br />2• Installation Guide for units. <br />3. Double wall containment dispenser sump illustrations. <br />Blythe R. Wilson <br />4. Illustrations and drawings of B -17-D and B -33-D Flexible Double Penetration Fittings <br />that interconnect with the interstitial space of the double wall dispenser containment <br />and are tested with the interstitial space of the dispenser sump. <br />5. A section removed from a double wall containment sump for inspection of the <br />construction and for determination of the volume of the interstitial space. <br />6. Material Data Sheet for the fluid that may be used for the continuous monitoring of the <br />interstitial space. <br />7. The sensor for monitoring the interstitial space is furnished by others. <br />8. Chemical compatibility data for Dion 1SO 6631 <br />9. Chemical compatibility for Derakane 411 <br />10. UL letter with test record dated 9/12/04 on annulus proof pressure/vacuum test. <br />Upon review the materials and construction it is my opinion and conclusion that sound <br />engineering design and engineering of these products provide an in-place system that will <br />provide the required secondary containment and allow continuous vacuum or hydrostatic <br />monitoring of the containment interstitial space including the sump penetration fittings. <br />OfficesThe RS alternate provides an integral support frame for the vertical vent risers. <br />ANAHEIM, CA lames��H]IayW BELLEVUE, WA <br />CAMAS, WA Sr. Civil Engineer : `'"`'��✓�, <br />MARTINEZ, CA 4 <br />y <br />l ETALUMA, CA <br />t <br />ROSEVILLE, CA <br />SCOTTSDALE, AZ VIViL <br />C;SCI V I L13 rdPA RMBRA VO1 D W ventterrninal-r l .doc <br />www.rbIdesign.com <br />