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Underwriters 333 ftgstan Road <br /> Narthbr,4,11.60062 20%LSA <br /> Laboratories Inc.,. www.ul.(,,on <br /> tell 1 847 272 8800 <br /> lax:1 80 272 8'29 <br /> April 9, 2003 <br /> AMERON INTERNATIONAL CORP <br /> Mr. JOIE FOLKERS <br /> AMERON FIBERGLASS PIPE DIV <br /> SUTTE 200 <br /> 5301 HOLLISTER RD <br /> HOUSTON, TX 77040 <br /> Our Reference: MH9162 and MH15596 <br /> Subject : Calcium Chloride Interstitial Monitoring Brine <br /> Solution <br /> Dear Mr. Folkers : <br /> This is in response to your recent E-mail regarding the <br /> compatibility of your pipe, fittings and adhesives with cz,lcium <br /> chloride brine solutions. <br /> We have evaluated your piping system materials for use with <br /> saturated sodium chloride solution and the results were found to <br /> comply with the current requirements of underwriters Laboratories <br /> Inc . Based on similarities in the corrosiveness of calcium <br /> chloride solution and sodium chloride solution with regard- to <br /> nonmetallic materials, it is not necessary to conduct testing in <br /> calcium chloride solution. <br /> UL Listing of your pipe products is not affected by fillirg the <br /> interstitial space with calcium chloride brine solution. <br /> If you have any questions or comments, please contact us . <br /> Very Truly Yours, Reviewed By: <br /> TIM CREWS (Ext. 42516) 42072) <br /> Senior Project Engineer Engineering Group Leader <br /> Conformity Assessment Services Conformity Assessment Services <br /> Ai ilceDeadenl organ,zation worKilg ter a sater wcrld wW integir,ty. precis 31 ar d krow,eac"r <br /> 'AMMONK-1 <br /> ((11W%7% <br /> 4MW <br />