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To: Lazarus_Long who wrote (62498)	9/16/2007 3:23:17 PM
From: Cheeky Kid	Respond to of 90947

They are spruce trees, the roots are near the surface. Poplar Tress are the problem with sewer pipes. I have (had) three 35 year old poplar trees in the back yard, sewer pipes run into the back lane, thats where the main sewer line is. Had the sewer lines changed about 6 years ago (root damaged). The pipes were 8 feet underground by the house, then they descended to 15 feet where they connected at the back lane. We had roots 15 feet underground, poplar trees are bad for that. en.wikipedia.org Like willows, many poplars have very strong and invasive root systems, so they must not be planted too close to houses or water pipes as they will crack walls and pipes in their search for moisture.