Corporate Office   2800 Corporate Exchange Drive, Suite 240  Columbus, Ohio 43231  Phone: (614) 714-0270  Fax: (614) 714-0323	Parkersburg Office    4420 Rosemar Road, Suite 201C  Parkersburg, West Virginia 26104  Phone: (304) 422-5240
Testing Laboratory  5710 Westbourne Avenue  Columbus, Ohio 43213  Phone: (614) 892-0162	Louisville Office  3600 Chamberlain Road, Suite 610  Louisville, Kentucky 40241  Phone: (502) 326-9023
Cincinnati Office    9420 Towne Square Avenue, Suite 22  Cincinnati, Ohio 45242  Phone: (513) 936-9400