Final Engineering Performance Standards Hudson River PCBs Superfund Site (April 2004)

Statement of the Engineering Performance Standards for Dredging
[3 MB, 115 pages]

Cover Letter
Executive Summary
1.0 Introduction
2.0 The Standards
3.0 Interactions Amng the Standards
4.0 Possible Refinements to the Standards during Design
5.0 Summary of Special Studies during Phase 1
6.0 Phase 1 Evaluation
7.0 References
Attachment A: Working Outline of Phase 1 Evaluation Report

Text and Tables
1.0 Technical Background and Approach
2.0 Supporting Analysis
3.0 Rationale for the Standard
4.0 Implementation of the Performance Standard for Dredging Resuspension
5.0 References
Tables

Figures
Figure 1-1 Schematic of Near-field Monitoring Station Locations
Figure 2-1 Comparison Between Upper Hudson River Remediation Scenario Forecasts
Figure 2-4 Cumulative PCB Loads at Waterford
Figure 2-5 HUDTOX Forecasts of Whole Water, Particulate, and Dissolved Total PCB Concentrations for Evaluation Level - 300 g/day Scenario
Figure 2-6 HDUTOX Forecasts for Whole Water, Particulate and Dissolved Total PCB Concentration for Control Level - 600 g/day Scenario (sr01)
Figure 2-7 HUDTOX forecasts for Whole Water, Particulate, and Dissolved Total PCB Concentrations for ControlLevel 350 ng/L Scenario (sr04)
Figure 2-8 Composite Fish Tissue Concentrations
Figure 2-10 Estimated Total PCB Concentrations
Figure 2-11 PCB Concentrations Downstream of Dredge for 350 ng/L Scenario Section 1 at 1 mile and 3 miles
Figure 3-1 Examination of Analytical Precision Based on Blind Duplicates Data from the Schuylerville Station, GE Data

Figures 4-1 to 4-6
[2.8 MB, 18 pages]

Figure 4-1 Simplified Flow Chart for Near-field SS
Figure 4-2 Simplified Flow Chart for Far-field PCB
Figure 4-3 Simplified Flow Chart for Far-field SS
Figure 4-4 Preliminary Study Areas for the Special Studies Showing LWA Concentrations
Figure 4-5 Preliminary Study Areas for the Special Studies Showing Sediment Types
Figure 4-6 PCB Profile in the Cores Samples Collected Post- Non-Time Critical Removal Action in the Grasse River

Attachments A - D
[3 MB, 361 pages]

Attachments E - H
[918 KB, 129 pages]

Attachments
Attachment A Hudson River Water Column Resuspension Standard
Attachment B Resuspension Sensitivity
Attachment C Examination of Mechanisms for High Dissolved Phase PCB Concentration
Attachment D Modeling Analysis
Attachment E Engineering Contingencies Considerations
Attachment F Measurement Technologies
Attachment G Statistical Justification of the Sampling Frequency for Phase 1 Monitoring Program
Attachment H Estimated Cost and Feasibility of the Phase 1 Monitoring Program

Technical Basis and Implementation of the Residuals Standard
[2.1 MB, 100 pages]

Text and Tables
Introduction
1.0 Technical Background and Approach
2.0 Supporting Analyses
3.0 Rationale for the Development of the Performance Standard
4.0 Implementation of the Performance Standard for Dredging Residuals
5.0 References
Tables

Figures
[3 MB, 42 pages]

Figures
Figure 2-1 Polygonal Declustering for Case Study Sites
Figure 2-2 Q-Q Plots – Test for Lognormal or Approximately Lognormal Distributions (alpha=0.10)
Figure 2-3 Mahalanobis Jackknife Distance for the Eight Case Studies
Figure 2-4 Histograms for Lognormal or Approximately Lognormal Data Sets
Figure 2-5 Mean vs. Standard Deviation for the Case Study Sites
Figure 2-6 Mean vs. Standard Deviation of the Logs for the Case Study Sites
Figure 2-7 Estimated Tri+ PCB Concentrations in the Residual Layer
Figure 2-8 Reynolds Post-Dredging PCB Data Semi-Variogram Analysis 70’ x 70’ and 50’ x 50’ Triangular Grid Spacing
Figure 2-9 Marathon Battery Post-Dredging Cadmium Data Semi-Variogram Analysis 50’ x 50’ Sampling Grid
Figure 2-10 New Bedford Harbor Core and Grab Sample Locations
Figure 2-11 New Bedford Harbor (Grab Sample Locations) Semi-Variogram Analysis Variable Grid Spacing
Figure 2-12 New Bedford Harbor Core Sample Semi-Variogram Analysis 40’ Triangular Grid Spacing
Figure 2-13 Cumberland Bay Semi-Variogram Analysis Variable Sample Spacing
Figure 2-14 Fox River Deposit N Semi-Variogram Analysis Variable Sample Spacing
Figure 2-15 Fox River SMUs 56/57 Semi-Variogram Analysis Variable Sample Spacing
Figure 2-16 GM Massena Semi-Variogram Analysis Variable Sample Spacing
Figure 3-1 Residual Evaluation Flow Chart
Figure 4-1 Sample of Determining the Extent of Re-dr

Attachments
Attachment A Case Study Raw Residuals Data
Attachment B Data Quality Objectives
Attachment C Estimated Cost of the Phase 1 Residuals Sampling Program

Technical Basis and Implementation of the Productivity Standard
[1 MB, 45 pages}

Text, Tables and Figures
1.0 Technical Background and Approach
2.0 Supporting Analysis
3.0 Rationale for the Development of the Performance Standard
4.0 Implementation of the Performance Standard for Dredging Productivity
5.0 References
Tables
Figures

Attachments A - D
[1.3 MB, 84 pages]

Attachments and Their Figures
Attachment A Evaluation of In-River Transportation
Attachment B Conceptual Design of On-Shore Dewatering and Water Treatment Processes
Attachment C Issues Associated with Processing Full Production Volumes at the Old Moreau Landfill Candidate Processing/Transfer Facility Site
Attachment D Example Production Schedule

Attachment E
[366 KB, 4 pages]

Figure E-1: Containment Types
[3 MB, 24 pages]

Attachment E and Components
Attachment E Example Production Schedule Backup
Figure E-1: Containment Types

Attachment F
[2.6 MB, 17 pages]

Sediment Characteristics
[2.9 MB, 9 pages]

Figure F-2: Mechanical Dredging Equipment Analysis
[2 MB, 16 pages]

Figure F-3: Hydraulic Dredging Equipment Analysis
[2 MB, 16 pages]

Attachment F and Components
Attachment F Evaluation of Applicable Dredge Equipment for the Upper Hudson River
Sediment Characteristics
Figure F-2 Mechanical Dredging Equipment Analysis
Figure F-3 Hydraulic Dredging Equipment Analysis

Back To Top

Text, Tables and Figures
1.0 Introduction
2.0 Case Studies
3.0 Case Study Summary
4.0 Case Study Narratives
5.0 Hudson River Data Collection
6.0 References
Tables
Figures