Learn the fundamentals and the basics of basement and hillside drainage from one of the most seasoned builders in the Bay Area. David Helfant (senior project engineer at Bay Area Structural in Emeryville) will lend his many decades of experience towards finding and fixing water issue problems. Keep your dwelling areas under control and out from under water with proven designs and techniques. Cost effective solutions will help in planning your future projects for sub and basement water issues. Books and literature included.