BISMARCK, N.D. (AP) – Some neighbors say a Canadian pipeline company’s attempt to muffle noise by planting trees around a pump station in southeast North Dakota isn’t working.
 
     TransCanada finished a tree-planting project along the Keystone pipeline near Fort Ransom last month.
 
     Bill Kiebke lives less than a mile from the pump station. He says the tree-planting project was a failure when it comes to quieting the four, 5,000-horsepower electric turbines at the site.
 
     Kiebke’s son, Joe, says the trees planted on three sides of the pump station are now funneling noise directly at their home. He says it has created an amphitheater effect. 
 
     TransCanada spokesman Shawn Howard says facility is operating below permitted levels but the company will continue to work toward pacifying neighbors.