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James H. Ray <br /> CIVIL ENGINEER <br /> 2041 Hidden Valley Drive <br /> Santa Rosa. CA 95404 <br /> 707-480-8115 <br /> March 23,2007 <br /> Western Fiberglass Inc <br /> 1555 Copperhill Parkway <br /> Santa Rosa,CA 95403 <br /> Att: Frank Lillo <br /> RE CERTIFICATION BY STATE REGISTERED PROFESSIONAL ENGINEER <br /> CCR Title 23,Division 3 and Chapter 16 Health and Safety Code Chapter 6.7 <br /> WESTERN FIBERGLASS CUFF PENETRATION SYSTEM <br /> Based on a careful review and analysis,I hereby certify the use of Western Fiberglass Structural <br /> SS218 Adhesive for adhering approved flexible boot materials to fiberglass double wall <br /> penetration fittings in the Western Fiberglass Cuff Penetration System. Western Fiberglass <br /> installs the fiberglass penetrations at the factory on double wall under-dispenser containment, <br /> transitions and vent boxes. Western Fiberglass installs the fiberglass penetrations in the field on <br /> tank sumps. <br /> I have reviewed the following materials <br /> 1. SS200 Methacrylate Adhesive Data Sheet <br /> 2. Structural Adhesives Technical Service Report for SS218 and SS630 structural <br /> Ahesives. This report covers the Introduction and Purpose, Test Methods and Procedures, <br /> Diagram of Lap Shear Specimen, Digital photos of substrate showing physical condition <br /> of tested coupons. Coupons were tested dry and after immersion for 30 days in the <br /> following liquids:Tap Water,Nitric Acid, Phosphoric Acid, Sulfuric Acid, Gasoline, <br /> Vegetable Oil,Detergent and Soap. <br /> 3. Two fabricated samples sectioned to show and allow for a detailed inspection of the <br /> construction and bonding of the completed penetration fining. <br /> James H. Ray <br /> Civil Engineer <br /> 024518 NO, <br /> ?j)/2j1'0 7 <br /> L <br /> ib <br />