January 27, 2012January 27, 2012 Ally Diamond Concrete Supply, Inc. Diamond Concrete Supply, Inc. Mr. Gullermo Dupleich 6974 Mission Gorge Road San Diego, CA 92190 Phone: (619) 287-2566 Fax: (619) 287-9316 Email: jaimy.dupleich@diamondconcretesupply.com Website: www.diamondconcreteinc.com