I have two approximately 35'-40' pines located about 4' to 5' from the foundation of my house. The pines (lodgepole I think, but I'm not sure) have about 16" diameter trunks. The house was built in 1953 and has a basement type foundation (the foundation wall goes down 4' to 5' underground where it sits on a slab). This is in northern Utah, with sandy, rocky soils. There are no apparent problems at all, but I just wondered if anyone can advise me on whether these large trees are a concern. Thanks.