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Illinois Precast Concrete Association-I.P.C.A.
P.O. Box 361 Manhattan, Il. 60442 c/o Herb Fruhwirth- Executive Director
Phone 815-478-5603 email hfruhwirth@aol.com
Wisconsin Precast Concrete Association-W.P.C.A.
16 North Carroll Street Suite 900 Madison, WI 53703 c/o Patrick Essie-Executive Director
Phone 608-256-7701, fax 608-251-8192 email pessie@ekgmail.com
website: http://www.wiprecast.org
Ornamental Concrete Producers Association-O.C.P.A.
5092 Kay Ave. SE, Bemidji, MN 56601 c/o Del Preuss- Executive Director
Phone 218-751-1982, fax 218-751-2186 email delpreus@paulbunyan.net
website: http://www.ornamentalconcrete.org
United States Green Building Council –U.S.G.B.C.
Chicago Chapter 222
Merchandise mart Plaza, Suite 946
Chicago, Illinois 60654 c/o Karin Barden-Manager of Membership and
Operations phone 312-245-8300, fax 312 245-8312, e-mail kbarden@usgbc-chicago.org
website: http://www.usgbc.org