clean grass and even some fishing boats. nice to notice a fishing vessel with fishing equipment ton versus booming equipment. 40 minutes into the marsh, we arrive at one of louisiana s hardest hit areas. here compression guns are positioned to scare off birds that might try to land in this still very oily wetland. last time i was up here was about a month ago. back then we had 600 workers and we were in the shallow areas trying to vacuum up pockets of oil in the entire stretch. reporter: bp s george carter knows cleaning the marsh is not easy. we cut the grass, raked the grass, flushed it on a couple of occasions. we tried some chemicals to remove stuff. reporter: this area is for experimenting, hoping something will yield clean, healthy grass. there are patches of new growth. as tempting as it is to go in