1 00:00:00,000 --> 00:00:02,640 So historically , a lot of when it came 2 00:00:02,640 --> 00:00:05,410 to dredge material , the perception was 3 00:00:05,410 --> 00:00:07,577 that the sediment was almost viewed as 4 00:00:07,577 --> 00:00:10,390 a contaminant . However , that policy 5 00:00:10,400 --> 00:00:12,567 is turning around and change it and we 6 00:00:12,567 --> 00:00:15,010 now are focusing on trying to keep the 7 00:00:15,010 --> 00:00:17,510 sediments within the system and that is 8 00:00:17,510 --> 00:00:19,454 to manage our dredge material more 9 00:00:19,454 --> 00:00:21,677 efficiently and effectively and cheaper 10 00:00:21,677 --> 00:00:23,899 as well . So here within the Seven Mile 11 00:00:23,899 --> 00:00:26,000 Island Innovation Laboratory , also 12 00:00:26,000 --> 00:00:28,000 known as smell , one of the primary 13 00:00:28,000 --> 00:00:31,780 concerns is bird habitat and nesting in 14 00:00:31,780 --> 00:00:34,240 particular . Over the recent years with 15 00:00:34,240 --> 00:00:37,100 sea level rise , a lot of the habitat 16 00:00:37,100 --> 00:00:39,650 has started to get too much water on 17 00:00:39,650 --> 00:00:41,872 its too low of an elevation . So one of 18 00:00:41,872 --> 00:00:43,872 the beneficial uses that we've been 19 00:00:44,010 --> 00:00:46,380 primarily targeting has been placing 20 00:00:46,380 --> 00:00:48,910 material on the wetlands simply to to 21 00:00:48,920 --> 00:00:51,250 increase the elevation of the island to 22 00:00:51,260 --> 00:00:54,030 aid bird habitat and nesting the 23 00:00:54,030 --> 00:00:55,863 observation platforms that we're 24 00:00:55,863 --> 00:00:57,974 installing . Currently , they're more 25 00:00:57,974 --> 00:00:59,808 focused on sediment dynamics and 26 00:00:59,808 --> 00:01:01,752 transport within the wetlands . So 27 00:01:01,752 --> 00:01:04,230 there uh instrumentation is looking at 28 00:01:04,240 --> 00:01:06,630 water velocity within the marsh and 29 00:01:06,630 --> 00:01:08,770 then how the sediment sizes and 30 00:01:08,770 --> 00:01:10,937 settling velocities . So when we place 31 00:01:10,937 --> 00:01:13,060 this dredge material on the marsh or 32 00:01:13,060 --> 00:01:15,282 adjacent to the marsh , we get a better 33 00:01:15,282 --> 00:01:17,282 understanding of if it stays on the 34 00:01:17,282 --> 00:01:19,338 marsh platform , if it moves off the 35 00:01:19,338 --> 00:01:21,504 marsh platform and how far we think it 36 00:01:21,504 --> 00:01:23,671 might transport . Ultimately , we want 37 00:01:23,671 --> 00:01:25,870 the sediment to be retained in the 38 00:01:25,870 --> 00:01:28,550 wetland areas so that it can provide 39 00:01:28,560 --> 00:01:30,700 habitat and we work with 40 00:01:30,710 --> 00:01:33,280 multidisciplinary team biologist 41 00:01:33,290 --> 00:01:36,310 Ecologist and they inform us what the 42 00:01:36,310 --> 00:01:38,570 desired outcome is for the ecosystem . 43 00:01:38,580 --> 00:01:41,950 So it's those specialists that know 44 00:01:41,960 --> 00:01:45,060 what elevations what sediment types , 45 00:01:45,060 --> 00:01:47,830 what vegetation types are desirable and 46 00:01:47,830 --> 00:01:49,941 that actually benefit the ecosystem , 47 00:01:49,941 --> 00:01:52,120 paired with people like me that are 48 00:01:52,120 --> 00:01:55,660 sediment research specialists that are 49 00:01:56,240 --> 00:01:59,320 train to measure how the sediment is 50 00:01:59,320 --> 00:02:01,209 going to move , how it's going to 51 00:02:01,209 --> 00:02:03,431 disperse how it might interact with the 52 00:02:03,431 --> 00:02:05,940 vegetation . Is coupling those two 53 00:02:05,940 --> 00:02:08,060 teams together , which provides the 54 00:02:08,060 --> 00:02:11,070 real benefit and being very strategic 55 00:02:11,070 --> 00:02:13,320 about where we play stretch material 56 00:02:13,320 --> 00:02:15,570 under what conditions and what we hope 57 00:02:15,570 --> 00:02:17,570 the outcome would be . The Corps of 58 00:02:17,570 --> 00:02:20,860 Engineers is engaged in many things to 59 00:02:20,870 --> 00:02:23,500 mitigate sea level rise , the impacts 60 00:02:23,500 --> 00:02:25,940 of climate change . This this is one of 61 00:02:25,940 --> 00:02:28,940 them where we're seeking to use a 62 00:02:28,940 --> 00:02:31,690 resource the sediment that we dredged 63 00:02:31,690 --> 00:02:33,746 from our channels and put it to good 64 00:02:33,746 --> 00:02:37,260 use for the ecosystems in society . Mhm .