SITE FIGURE 1 SITE LOCATION MAP SLRIDT SITE DULUTH, MINNESOTA SERVICE. PHASEIIIB.ppt 01/26/01 L.SIMMONS MC

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2 SITE FIGURE 1 SITE LOCATION MAP SLRIDT SITE DULUTH, MINNESOTA PHASEIIIB.ppt 01/26/01 L.SIMMONS MC

3 N Trustees Marilyn Danks Chairperson MNDNR Jane Mosel MPCA Project Manager MPCA Dan Talsma, PhD Companies' Liaison Interlake Marcel Sylvestre Domtar Mark Kamilow Honeywell International PEER REVIEW TEAM Nancy Musgrove Coordinator Mgmt. of Env. Res. Frank Dillon N Coordinator Windward Bill Gregg Areas A&E Groundwater ENSR Mike Costello, PG, PE Project Manager Eric Hedblom, PG Field team leader Jon Berdahl Analytical QA/QC Manager Database Manager Hubert Huls, P.E. Treatability Testing, Safety Officer John Verduin, PE Geotechncial Engineering Anchor Env. Marek Zaluski, Phd. Groundwater Modeling Slip 6 Area Tim Rogers Biological Studies Surface Water Modeling Flow & Contam. Transport John Sorensen UMD Soil Borings/Wells Cone Penetrometer American Eng. Testing Tom Krzewinski Chemistry Lab Braun Intertec Bill Scruton SBLT, Consolidation, & Dredging Elutriate Test Richard Sheets Soil Technology, Inc. Cap Advection Model Clay Patmount Katherine Larm Anchor Env. Root Penetration & Plant uptake in wetlands Frank Dillon Windward Routine Geotech Testing Braun Intertec Bill Scruton LL Hg Lab Frontier Geosciences Nicolas Bloom Bubble testing Bubble Management Walther van Kesteren WL Delft Hydraulics Erosion Modeling Geotechnical Analysis John Verduin Anchor Env. Hg Methylation in wetlands Reed Harris Tetra Tech, Inc. Vibrocoring AScI Elliott Smith, Phd. Air Emission Testing & Modeling George Schewe EQM Capping, Dredging & Containment Design John Verduin Anchor Env. Wetland Sampling Frank Svoboda Svoboda Eco. Services 8-inch Push Cores Graves Drilling Dan Graves Figure 2.ppt Dynamic Estuary Model John Sorensen UMD Guenther Frankenstein, P.E. Ice Force Analysis Retired USACRREL Figure 2 Phase III RI/FS Project Organization Chart

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5 FIGURE 4 TYPICAL VIBRATING WIRE PIEZOMETER INSTALLATION SLRIDT SITE DULUTH, MINNESOTA PHiiiB\ INSTALL.dwg 02/01/01 L.SIMMONS E.HEDBLOM Environmental & Engineering

6 FIGURE 5 SHORELINE DRIVE POINTS AND WELLS SLRIDT SITE DULUTH, MINNESOTA PhIIIB\DrPts.dwg 01/29/01 L.Simmons EH

7 FIGURE 6 SCHEDULE FOR PHASE III AND DATA GAP REPORT ID Task Name Duration Start Finish 1 Mobilization 0 days Mon 2/5/01 Mon 2/5/01 2nd Quarter 3rd Quarter 4th Quarter 1st Quarter 2nd Quarter Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun 2/5 2 IIIA DATA COLLECTION 185 days Mon 2/5/01 Wed 8/8/01 3 On-shore well/piez network (ws) 112 days Mon 2/5/01 Sun 5/27/01 5/27 4 Measure currents (ws) 167 days Mon 2/5/01 Sat 7/21/01 7/21 5 Measure Site water levels (ws) 170 days Mon 2/5/01 Tue 7/24/01 7/24 6 Geologic Characterization of Sed (w) 7 days Mon 2/5/01 Sun 2/11/01 2/11 7 Determine limits of extractable NAPL (w) 10 days Sat 2/10/01 Mon 2/19/ /19 8 Bench Cap Test (w) 60 days Tue 2/20/01 Fri 4/20/01 2/20 4/20 9 Natural cap microsamples (w) 22 days Mon 2/12/01 Mon 3/5/01 /12 3/5 10 Vane shear tests (w) 14 days Thu 2/22/01 Wed 3/7/01 2/22 3/7 11 Dredging Elutirate Test (w) 60 days Mon 3/12/01 Thu 5/10/01 3/12 5/10 12 SBLT (w) 60 days Mon 3/12/01 Thu 5/10/01 3/12 5/10 13 Bubble studies (ws) 170 days Tue 2/20/01 Wed 8/8/01 2/20 8/8 14 Multi-phase flow & consolidation measure (w) 60 days Mon 4/2/01 Thu 5/31/01 4/2 5/31 15 Measure emissions (w) 45 days Wed 3/14/01 Fri 4/27/01 3/14 4/27 16 IIIA MODELING AND ANALYSES 254 days Mon 2/5/01 Tue 10/16/01 17 Research sources of air emissions 7 days Mon 2/5/01 Sun 2/11/01 2/11 18 Review shoreline stability 4 days Mon 2/5/01 Thu 2/8/01 2/8 19 Model wave and wake 7 days Mon 2/5/01 Sun 2/11/01 2/11 20 Model prop wash 7 days Mon 2/5/01 Sun 2/11/01 2/11 21 Ice evaluation 95 days Mon 2/5/01 Thu 5/10/01 5/10 Project: Figure B - Project Schedule Date: Fri 3/9/01 Task Critical Task Progress Milestone Summary Rolled Up Task Rolled Up Critical Task Rolled Up Milestone Rolled Up Progress Split External Tasks Project Summary Group By Summary Figure B - Project Schedule.mpp

8 FIGURE 6 SCHEDULE FOR PHASE III AND DATA GAP REPORT ID Task Name Duration Start Finish 22 State Proposed Performance Req. 136 days Mon 2/5/01 Wed 6/20/01 2nd Quarter 3rd Quarter 4th Quarter 1st Quarter 2nd Quarter Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun 6/20 23 Model air emissions 30 days Thu 6/21/01 Fri 7/20/01 6/21 7/20 24 Dredging technology update 35 days Sat 7/21/01 Fri 8/24/01 7/21 8/24 25 Dredging production rate 14 days Sat 8/25/01 Fri 9/7/01 8/25 9/7 26 Dredge plans 25 days Sat 8/25/01 Tue 9/18/01 8/25 9/18 27 Geotechnical Stability Analysis 7 days Wed 9/19/01 Tue 9/25/01 9/19 9/25 28 PAH flux management plan 45 days Thu 6/21/01 Sat 8/4/01 6/21 8/4 29 Conduct erosion analysis 30 days Sun 8/5/01 Mon 9/3/01 8/5 9/3 30 Model consolidation and permeability 7 days Wed 9/19/01 Tue 9/25/01 9/19 9/25 31 Estimate TSS and residue 21 days Wed 9/26/01 Tue 10/16/01 9/26 10/16 32 IIIB DATA COLLECTION 388 days Mon 4/23/01 Wed 5/15/02 33 Off-shore piez/flux meters (s) 100 days Mon 4/23/01 Tue 7/31/01 4/23 7/31 34 Shoreline drive point wells (s) 86 days Mon 5/7/01 Tue 7/31/01 5/7 7/31 35 CDF model field calibration (s) 5 days Wed 5/9/01 Sun 5/13/01 5/9 5/13 36 Contaminant transport calibration (s) 5 days Mon 5/14/01 Fri 5/18/01 5/14 5/18 37 Potential NAPL seepage inspection (dropped) 0 days Thu 5/10/01 Thu 5/10/01 5/10 38 Root penetration & plant uptake study (s) 50 days Wed 5/23/01 Wed 7/11/01 5/23 7/11 39 Hg methylation study (s) 50 days Wed 5/23/01 Wed 7/11/01 5/23 7/11 40 Pilot scale capping test (if necessary) (f) 250 days Sat 9/8/01 Wed 5/15/02 9/8 5/15 41 IIIB MODELING AND ANALYSES 148 days Wed 7/25/01 Wed 12/19/01 42 Onshore flow/flux to surface water 28 days Wed 8/1/01 Tue 8/28/01 8/1 8/28 Project: Figure B - Project Schedule Date: Fri 3/9/01 Task Critical Task Progress Milestone Summary Rolled Up Task Rolled Up Critical Task Rolled Up Milestone Rolled Up Progress Split External Tasks Project Summary Group By Summary Figure B - Project Schedule.mpp

9 FIGURE 6 SCHEDULE FOR PHASE III AND DATA GAP REPORT ID Task Name Duration Start Finish 43 Pore fluid migration modeling 26 days Wed 9/26/01 Sun 10/21/01 2nd Quarter 3rd Quarter 4th Quarter 1st Quarter 2nd Quarter Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun 9/26 10/21 44 Flow through cap model 40 days Wed 8/1/01 Sun 9/9/01 8/1 9/9 45 CDF model 35 days Wed 9/26/01 Tue 10/30/01 9/26 10/30 46 Surface Water Flow Model (SWFM) 42 days Wed 7/25/01 Tue 9/4/01 7/25 9/4 47 Surface Water Quality Model 24 days Wed 10/31/01 Fri 11/23/01 10/31 11/23 48 SWQM & residue vs. PPR 21 days Sat 11/24/01 Fri 12/14/01 11/24 12/14 49 Flux through cap vs. PPRs 28 days Mon 10/22/01 Sun 11/18/01 10/22 11/18 50 Capping tech & prod. Rate forecast 21 days Sat 10/20/01 Fri 11/9/01 10/20 11/9 51 Cap design 60 days Thu 10/11/01 Sun 12/9/01 10/11 12/9 52 Dredging and containment design 60 days Sun 10/21/01 Wed 12/19/01 10/21 12/19 53 DEVELOP ALTERNATIVES 78 days Mon 11/19/01 Mon 2/4/02 54 No Action 14 days Mon 11/19/01 Sun 12/2/01 11/19 12/2 55 Wetland Cap 14 days Mon 12/10/01 Sun 12/23/01 12/10 12/23 56 Dredge and Dispose to Slip 6 14 days Mon 12/24/01 Sun 1/6/02 12/24 1/6 57 Dredge to off-site disposal 7 days Mon 1/7/02 Sun 1/13/02 1/7 1/13 58 Develop O&M plan 7 days Mon 1/14/02 Sun 1/20/02 1/14 1/20 59 Estimate costs 15 days Mon 1/21/02 Mon 2/4/02 1/21 2/4 60 DRAFT DATA GAP REPORT 104 days Tue 2/5/02 Sun 5/19/02 2/5 5/19 Project: Figure B - Project Schedule Date: Fri 3/9/01 Task Critical Task Progress Milestone Summary Rolled Up Task Rolled Up Critical Task Rolled Up Milestone Rolled Up Progress Split External Tasks Project Summary Group By Summary Figure B - Project Schedule.mpp

10 EXISTING CONDITIONS AT STRYKER BAY (LAYER THICKNESSES ARE NOT TO SCALE.) STRYKER BAY WITH A CAP (LAYER THICKNESSES ARE NOT TO SCALE.) DIAGRAMS BASED ON FIGURE 1 OF RUIZ et. Al PRESENTED IN APPENDIX A. FIGURE 7 FLOW THROUGH CAP MODEL SLRIDT SITE DULUTH, MINNESOTA PHIIIB\Figure7.ppt 01/26/01 L.SIMMONS MC

11 FIGURE 7 FIGURE 8 SURFACE WATER FLOW MODEL SLRIDT SITE DULUTH, MINNESOTA PhiiiB\Fig7.dwg 03/12/01 WJ MC Environmental & Engineering

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