Jan. 7-8
Wisconsin Precast Concrete Association Winter Convention, Holiday Inn & Suites, Madison. Call 608/256-7701.
Jan 8-10
Michigan Septic Tank Association Onsite Wastewater Conference. Call 989/773-6985, ext: 258 or visit www.msta.biz.
Jan. 15-17
Ohio Onsite Wastewater Association...