60 50 40 ws Number of Sco 30 20 10 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.7 Estimated Removable Load Thickness in Feet Histogram of Scow Removable Load Thickness Figure 5-2 April 2010 EPA Phase 1 Evaluation Report - Hudson River PCBs Site
Average Daily Bucket Fill Rate Sediment Losses Indicated when Bucket Fill Rates Approach or Exceed 100% Average Daily Bucket Fill Rate CU 7 Average Daily Bucket Fill Rate CU-7 16 (CU ‐ 7) 14 12 12 10 equency 8 Fre 6 4 2 0 0 20 40 60 80 100 120 140 160 180 Average Percent Full
CU-1 Bucket Filling 181% Efficiency (%) 150% DP2 DP3 DP1 DP4 DP5 140% 140% 130% 120% Bucket Size 110% 1 cy 1 cy 100% 2 cy 90% 5 cy 80% 70% 60% 50% 40% 30% 30% 20% 10% 0% 6/1 6/8 6/15 6/22 6/29 7/6 7/13 7/20 7/27 8/3 8/10 8/17 8/24 8/31 9/7 9/14 9/21 9/28 10/5 10/12 10/19 10/26 Note : DP = Dredge Pass Figure III-3-3a Average Daily Bucket Filling Efficiency March 2010 EPA Phase 1 Evaluation Report - Hudson River PCBs Site
CU-2 Bucket Filling Bucket Filling Efficiency (%) DP1 150% DP2 DP3 DP4 140% 130% Bucket Size 120% 110% 1 cy 100% 100% 2 cy 90% 5 cy 80% 70% 60% 50% 40% 30% 20% 10% 0% 0% 6/1 6/8 6/15 6/22 6/29 7/6 7/13 7/20 7/27 8/3 8/10 8/17 8/24 8/31 9/7 9/14 9/21 9/28 10/5 10/12 Note : DP = Dredge Pass Figure III-3-3b Average Daily Bucket Filling Efficiency March 2010 EPA Phase 1 Evaluation Report - Hudson River PCBs Site
CU-3 Bucket Filling Efficiency (%) 150% DP1 DP3 3 DP2 DP2 140% 140% Bucket Size 130% 120% 1 cy 110% 2 2 cy 100% 5 cy 90% 80% 70% 70% 60% 50% 40% 30% 20% 10% 0% 7/6 7/13 7/20 7/27 8/3 8/10 8/17 8/24 8/31 9/7 9/14 9/21 9/28 10/5 Note : DP = Dredge Pass Figure III-3-3c Average Daily Bucket Filling Efficiency March 2010 EPA Phase 1 Evaluation Report - Hudson River PCBs Site
CU-4 Bucket Filling Efficiency (%) DP1 DP3 DP2 150% Bucket Size 140% 140% 1 cy 130% 2 cy 120% 110% 5 cy 100% 90% 80% 70% 70% 60% 50% 40% 30% 20% 10% 0% 0% 7/16 7/23 7/30 8/6 8/13 8/20 8/27 9/3 9/10 9/17 9/24 10/1 10/8 10/15 10/22 Note�:�DP�=�Dredge Pass Figure III-3-3d Average Daily Bucket Filling Efficiency March 2010 EPA Phase 1 Evaluation Report - Hudson River PCBs Site
CU-5 Bucket Filling Efficiency (%) DP3 150% DP1 DP2 140% 130% 120% 110% % 100% 90% 80% 70% 70% 60% Bucket Size 50% 40% 1 cy 30% 2 cy 20% 5 cy 10% 0% 0% 6/8 6/15 6/22 6/29 7/6 7/13 7/20 7/27 8/3 8/10 8/17 8/24 8/31 9/7 9/14 Note : DP = Dredge Pass Figure III-3-3e Average Daily Bucket Filling Efficiency March 2010 EPA Phase 1 Evaluation Report - Hudson River PCBs Site
CU-6 B Bucket Filling k t Filli Efficiency (%) DP3 DP1 DP2 Bucket Size 150% 140% 1 cy y 130% 2 cy 120% 5 cy 110% 100% 100% 90% 80% 70% 60% 50% 40% 30% 30% 20% 10% 0% 6/11 6/18 6/25 7/2 7/9 7/16 7/23 7/30 8/6 8/13 8/20 8/27 9/3 9/10 9/17 9/24 Note : DP = Dredge Pass Figure III-3-3f Average Daily Bucket Filling Efficiency March 2010 EPA Phase 1 Evaluation Report - Hudson River PCBs Site
CU-7 Bucket Filling 172% Efficiency (%) DP1 DP2 DP3 DP4 150% 140% 140% 130% 120% 110% 100% 90% 80% 70% 70% 60% 50% Bucket Size 40% 1 cy 1 cy 30% 2 cy 20% 5 cy 10% 0% 0% 7/7 7/14 7/21 7/28 8/4 8/11 8/18 8/25 9/1 9/8 9/15 9/22 9/29 10/6 10/13 Note : DP = Dredge Pass Figure III-3-3g Average Daily Bucket Filling Efficiency March 2010 EPA Phase 1 Evaluation Report - Hudson River PCBs Site
CU-8 CU 8 Bucket Filling Bucket Filling Efficiency (%) Bucket Size 150% DP2 DP3 DP1 DP4 1 cy 1 cy 140% 2 cy 130% 5 cy 120% 110% 100% 90% 80% 70% 70% 60% 50% 40% 30% 20% 10% 0% 0% 7/19 7/26 8/2 8/9 8/16 8/23 8/30 9/6 9/13 9/20 9/27 10/4 10/11 10/18 10/25 Note : DP = Dredge Pass Figure III-3-3h Average Daily Bucket Filling Efficiency March 2010 EPA Phase 1 Evaluation Report - Hudson River PCBs Site
CU-17 Bucket Filling Efficiency (%) DP2 DP3 DP1 150% 140% 140% Bucket Size Bucket Size 130% 1 cy 120% 2 cy 110% 5 cy 5 cy 100% 90% 80% 70% 70% 60% 50% 40% 30% 20% 10% 0% 0% 6/26 7/3 7/10 7/17 7/24 7/31 8/7 8/14 8/21 8/28 9/4 9/11 Note : DP = Dredge Pass Figure III-3-3i Average Daily Bucket Filling Efficiency March 2010 EPA Phase 1 Evaluation Report - Hudson River PCBs Site
CU-18 Bucket Filling Bucket Filling Efficiency (%) 155% 182% DP3 150% DP2 DP1 Bucket Size 140% 1 cy 130% 120% 2 cy (in SP) 110% 5 cy (out SP) 100% 100% 90% 80% 70% 60% 50% 40% 30% 30% 20% 10% 0% 7/16 6 3 7/23 7/30 0 8/6 6 8/13 3 0 8/20 7 8/27 9/3 3 0 9/10 7 9/17 9/24 4 1 8 5 10/22 2 10/ 10/ 10/1 Notes : DP = Dredge Pass SP = Sheet Pile Figure III-3-3j Average Daily Bucket Filling Efficiency March 2010 EPA Phase 1 Evaluation Report - Hudson River PCBs Site
� Date 7/20/2009 7/21/2009 7/22/2009 7/23/2009 7/24/2009 7/25/2009 7/28/2009 7/29/2009 7/30/2009 7/31/2009 8/3/2009 8/5/2009 Dredging Area 1 Portion of CU-7 Area of Interest 0 4.5 9 18 Feet Figure 1-1 Bucket Bite Locat i ons and Depths below 2005 Bathymetric Surface April 2010 EPA Phase 1 Evaluation Report – Hudson River PCBs Site
� Date 7/20/2009 7/21/2009 7/22/2009 7/23/2009 7/24/2009 7/25/2009 7/28/2009 7/29/2009 7/30/2009 7/31/2009 8/3/2009 8/5/2009 Dredging Area 1 Portion of CU-7 Area of Interest 0 4.5 9 18 Feet Figure 1-1 Bucket Bite Locat i ons and Depths below 2005 Bathymetric Surface April 2010 EPA Phase 1 Evaluation Report – Hudson River PCBs Site
� Date 7/20/2009 7/21/2009 7/22/2009 7/23/2009 7/24/2009 7/25/2009 7/28/2009 7/29/2009 7/30/2009 7/31/2009 8/3/2009 8/5/2009 Dredging Area 1 Portion of CU-7 Area of Interest 0 4.5 9 18 Feet Figure 1-1 Bucket Bite Locat i ons and Depths below 2005 Bathymetric Surface April 2010 EPA Phase 1 Evaluation Report – Hudson River PCBs Site
� Date 7/20/2009 7/21/2009 7/22/2009 7/23/2009 7/24/2009 7/25/2009 7/28/2009 7/29/2009 7/30/2009 7/31/2009 8/3/2009 8/5/2009 Dredging Area 1 Portion of CU-7 Area of Interest 0 4.5 9 18 Feet Figure 1-1 Bucket Bite Locat i ons and Depths below 2005 Bathymetric Surface April 2010 EPA Phase 1 Evaluation Report – Hudson River PCBs Site
� Date 7/20/2009 7/21/2009 7/22/2009 7/23/2009 7/24/2009 7/25/2009 7/28/2009 7/29/2009 7/30/2009 7/31/2009 8/3/2009 8/5/2009 Dredging Area 1 Portion of CU-7 Area of Interest 0 4.5 9 18 Feet Figure 1-1 Bucket Bite Locat i ons and Depths below 2005 Bathymetric Surface April 2010 EPA Phase 1 Evaluation Report – Hudson River PCBs Site
� Date 7/20/2009 7/21/2009 7/22/2009 7/23/2009 7/24/2009 7/25/2009 7/28/2009 7/29/2009 7/30/2009 7/31/2009 8/3/2009 8/5/2009 Dredging Area 1 Portion of CU-7 Area of Interest 0 4.5 9 18 Feet Figure 1-1 Bucket Bite Locat i ons and Depths below 2005 Bathymetric Surface April 2010 EPA Phase 1 Evaluation Report – Hudson River PCBs Site
� Date 7/20/2009 7/21/2009 7/22/2009 7/23/2009 7/24/2009 7/25/2009 7/28/2009 7/29/2009 7/30/2009 7/31/2009 8/3/2009 8/5/2009 Dredging Area 1 Portion of CU-7 Area of Interest 0 4.5 9 18 Feet Figure 1-1 Bucket Bite Locat i ons and Depths below 2005 Bathymetric Surface April 2010 EPA Phase 1 Evaluation Report – Hudson River PCBs Site
� Date 7/20/2009 7/21/2009 7/22/2009 7/23/2009 7/24/2009 7/25/2009 7/28/2009 7/29/2009 7/30/2009 7/31/2009 8/3/2009 8/5/2009 Dredging Area 1 Area of Interest Portion of CU-7 0 4.5 9 18 Feet Figure 1-1 Bucket Bite Locat i ons and Depths below 2005 Bathymetric Surface April 2010 EPA Phase 1 Evaluation Report – Hudson River PCBs Site
� Date 7/20/2009 7/21/2009 7/22/2009 7/23/2009 7/24/2009 7/25/2009 7/28/2009 7/29/2009 7/30/2009 7/31/2009 8/3/2009 8/5/2009 Dredging Area 1 Portion of CU-7 Area of Interest 0 4.5 9 18 Feet Figure 1-1 Bucket Bite Locat i ons and Depths below 2005 Bathymetric Surface April 2010 EPA Phase 1 Evaluation Report – Hudson River PCBs Site
� Date 7/20/2009 7/21/2009 7/22/2009 7/23/2009 7/24/2009 7/25/2009 7/28/2009 7/29/2009 7/30/2009 7/31/2009 8/3/2009 8/5/2009 Dredging Area 1 Portion of CU-7 Area of Interest 0 4.5 9 18 Feet Figure 1-1 Bucket Bite Locat i ons and Depths below 2005 Bathymetric Surface April 2010 EPA Phase 1 Evaluation Report – Hudson River PCBs Site
� Date 7/20/2009 7/21/2009 7/22/2009 7/23/2009 7/24/2009 7/25/2009 7/28/2009 7/29/2009 7/30/2009 7/31/2009 8/3/2009 8/5/2009 Dredging Area 1 Portion of CU-7 Area of Interest 0 4.5 9 18 Feet Figure 1-1 Bucket Bite Locat i ons and Depths below 2005 Bathymetric Surface April 2010 EPA Phase 1 Evaluation Report – Hudson River PCBs Site
� Date 7/20/2009 7/21/2009 7/22/2009 7/23/2009 7/24/2009 7/25/2009 7/28/2009 7/29/2009 7/30/2009 7/31/2009 8/3/2009 8/5/2009 Dredging Area 1 Portion of CU-7 Area of Interest 0 4.5 9 18 Feet Figure 1-1 Bucket Bite Locat i ons and Depths below 2005 Bathymetric Surface April 2010 EPA Phase 1 Evaluation Report – Hudson River PCBs Site
Recommend
More recommend