APPENDIX A PREVIOUS INVESTIGATIONS AND NYSDEC CORRESPONDENCE HRP Associates, Inc. U.S. EPA REGION 2 REVISION NO. 3 SITE INVESTIGATION REPORT REVISION DATE: May 16, 2006 DRAFT Site-Specific Brownfields Site Investigation Report Brownfields Assessment Demonstration Pilot Project South Troy Brownfields Troy, New York Prepared for: City of Troy City Hall 1 Monument Square Troy, New York 12180 Prepared by: Sterling Environmental Engineering, P.C. 24 Wade Road Latham, New York 12110 May 16, 2006 Site Investigation Report - DRAFT Page 1 Brownfields Assessment Demonstration Pilot – 5/16/06 #22026 South Troy Brownfields, Troy, New York © 2006, Sterling Environmental Engineering, P.C. Site-Specific Brownfields Site Investigation Report Brownfields Assessment Demonstration Pilot Project South Troy Brownfields Troy, New York Funded by U.S. EPA Region 2 TABLE OF CONTENTS Page No. 1.0 INTRODUCTION TO SITE INVESTIGATION 7 1.1 Project Objectives 8 1.2 Sites 8 1.2.1 Site Locations and Areas 8 1.2.1.1 Rensselaer Iron Works AOC Site Location 8 and Area (a.k.a. Scolite) 1.2.1.2 Alamo AOC Site Location 8 1.2.2 Site Histories 9 1.2.2.1 Rensselaer Iron Works Site History (a.k.a. Scolite) 9 1.2.2.1.1 City Map and Sanborn Fire Insurance 9 Maps 1.2.2.1.2 Aerial Photographs 9 1.2.2.1.3 Interviews 9 1.2.2.1.4 Site Inspection 10 1.2.2.2 Alamo AOC Site History 10 1.2.2.2.1 City Map and Sanborn Fire Maps 10 1.2.2.2.2 Aerial Photographs 11 1.3 Report Organization 11 2.0 STUDY AREA INVESTIGATIONS 12 2.1 Introduction 12 2.2 Field Investigation 12 2.2.1 Field Investigation at Rensselaer Iron Works AOC 12 2.2.2 Field Investigation at Alamo AOC 13 2.3 Surface Soil Sampling 14 2.3.1 Surface Soil Sampling at Rensselaer Iron Works AOC 14 2.3.2 Surface Soil Sampling at the Alamo AOC 15 2.3.3 Background Surface Soil Sampling 16 2.4 Soil Boring Installation, Well Installation and Sampling 16 2.4.1 Soil Boring Installation, Well Installation and Sampling 16 at Rensselaer Iron Works AOC 2.4.2 Soil Boring Installation, Well Installation and Sampling 17 Site Investigation Report - DRAFT Page 2 Brownfields Assessment Demonstration Pilot – 5/16/06 #22026 South Troy Brownfields, Troy, New York © 2006, Sterling Environmental Engineering, P.C. at the Alamo AOC 2.5 Surface Soil Test Pits. 18 2.6 Aboveground Storage Tank Investigation at Alamo 19 2.7 Perlite Investigation 20 3.0 PHYSICAL CHARACTERISTICS 21 3.1 Regional Geological Setting 21 3.2 Geology of Sites 21 3.3 Regional Hydrogeologic Setting 21 3.3.1 Groundwater Usage in Vicinities of Sites 22 3.4 Site Hydrogeology 22 4.0 NATURE AND EXTENT OF IMPACTS 22 4.1 Data Validation and Metals Background 22 4.1.1 Data Validation 22 4.1.2 Metals Background Results 23 4.2 Surface Soils 23 4.2.1 Semi-Volatile Organic Compounds 23 4.2.1.1 Rensselaer Iron Works AOC 24 4.2.1.1.1 Rail Siding 24 4.2.1.1.2 Foundry 24 4.2.1.1.3 Yard 24 4.2.1.2 Alamo 25 4.2.2 PCBs 25 4.2.2.1 Rensselaer Iron Works AOC 25 4.2.2.1.1 Rail Siding 25 4.2.2.1.2 Yard 25 4.2.3 Metals 26 4.2.3.1 Rensselaer Iron Works AOC 26 4.2.3.1.1 Rail Siding 26 4.2.3.1.2 Foundry 26 4.2.3.1.3 Yard 26 4.2.3.2 Alamo 27 4.2.3.3 Background 27 4.3 Figures Depicting the Exceedances of the Recommended Soil 27 Cleanup Objectives in the Soil Surface 4.4 Subsurface Soils 27 4.4.1 Semi-Volatile Organic Compounds 27 4.4.1.1 Rensselaer Iron Works AOC 28 4.4.1.2 Alamo 28 4.4.2 PCBs 28 4.4.2.1 Rensselaer Iron Works AOC 28 4.4.3 Metals 28 4.4.3.1 Rensselaer Iron Works AOC 28 4.4.3.2 Alamo 29 4.4.4 Volatile Organic Compounds 29 4.4.4.1 Rensselaer Iron Works AOC 29 Site Investigation Report - DRAFT Page 3 Brownfields Assessment Demonstration Pilot – 5/16/06 #22026 South Troy Brownfields, Troy, New York © 2006, Sterling Environmental Engineering, P.C. 4.4.4.2 Alamo 29 4.4.5 Total Petroleum Hydrocarbons 29 4.4.5.1 Alamo 29 4.5 Figures Depicting the Parameter Concentrations in the Soil Profile 30 4.5.1 Figure Depicting the Parameter Concentrations in the Soil 30 Profile Along the Bulkhead 4.5.2 Figure Depicting the Parameter Concentrations in the Soil 30 Profile Perpendicular to the Bulkhead 4.6 Groundwater 31 4.6.1 Semi-Volatile Organic Compounds 31 4.6.1.1 Rensselaer Iron Works AOC 31 4.6.1.2 Alamo 31 4.6.2 Metals 31 4.6.2.1 Rensselaer Iron Works AOC 31 4.6.2.2 Alamo 32 4.6.3 Volatile Organic Compounds 32 4.6.3.1 Alamo 32 4.7 Hudson River Sediments Pertaining to the Rensselaer Iron Works 32 AOC 4.7.1 Semi-Volatile Organic Compounds 32 4.7.2 PCBs 32 4.7.3 Metals 33 4.8 Subsurface Patch of No. 6 Fuel Oil at the Alamo 33 4.9 Perlite Investigation at the Rensselaer Iron Works AOC 33 5.0 BASELINE RISK ASSESSMENT 33 6.0 CONCLUSIONS AND RECOMMENDATIONS 34 6.1 Conclusions for Site Background Samples for Metals 34 6.2 Conclusions for the Rensselaer Iron Works AOC 35 6.2.1 Background Regarding the Site 35 6.2.2 Physic al Characteristics of Site 35 6.2.3 Nature and Extent of Impacts 35 6.2.3.1 Soils 35 6.2.3.2 Groundwater 36 6.2.3.3 Sediments 36 6.2.3.4 Perlite 37 6.3 Risk Assessment for the Rensselaer Iron Works AOC 37 6.4 Recommendations for the Rensselaer Iron Works AOC 38 6.5 Conclusions for the Alamo 38 6.5.1 Site Background 38 6.5.2 Physical Characteristics of Site 38 6.5.3 Nature and Extent of Impacts 38 6.5.3.1 Surface Soils 38 6.5.3.2 Groundwater 39 6.5.3.3 No. 6 Fuel Oil Patch 39 6.5.3.4 AST 39 6.6 Recommendations for the Alamo 40 Site Investigation Report - DRAFT Page 4 Brownfields Assessment Demonstration Pilot – 5/16/06 #22026 South Troy Brownfields, Troy, New York © 2006, Sterling Environmental Engineering, P.C. Site Investigation Report - DRAFT Page 5 Brownfields Assessment Demonstration Pilot – 5/16/06 #22026 South Troy Brownfields, Troy, New York © 2006, Sterling Environmental Engineering, P.C. List of Tables Table 4.1.2 Background Metals Results Versus Eastern USA Background Table 4.6.1 Results for Semi-Volatile Organic Compounds Analyses on Groundwater Samples from the Rensselaer Iron Works AOC and the Alamo AOC Table 4.6.2 Results for Metals Analyses on Groundwater Samples from the Rensselaer Iron Works AOC and the Alamo AOC Hudson River Sediments: Table 4.7.1 Semi-Volatile Organic Compounds (SVOCs) Table 4.7.2 Polychlorinated Biphenyls (PCBs) Table 4.7.3 Metals Rensselaer Iron Works AOC: Table 4.2.1.1.1 Rail Siding, Semi-Volatile Organic Compounds (SVOCs) Soil Surface to 2 Feet Depth Table 4.2.1.1.2 Foundry Building, Semi-Volatile Organic Compounds (SVOCs) Soil Surface to 2 Feet Depth Table 4.2.1.1.3 Yard, Semi-Volatile Organic Compounds (SVOCs) Soil Surface to 2 Feet Depth Table 4.2.2.1.1 Rail Siding, Polychlorinated Biphenyls (PCBs) Soil Surface to 2 Feet Depth Table 4.2.2.1.2 Yard, Polychlorinated Biphenyls (PCBs) Soil Surface to 2 Feet Depth Table 4.2.3.1.1 Rail Siding, Metals Soil Surface to 2 Feet Depth Table 4.2.3.1.2 Foundry Building, Metals Soil Surface to 2 Feet Depth Table 4.2.3.1.3 Yard, Metals Soil Surface to 2 Feet Depth Table 4.4.1.1 Yard, Semi-Volatile Organic Compounds (SVOCs), Below 2 Feet Depth Table 4.4.2.1 Yard, Polychlorinated Biphenyls (PCBs) Soil Below 2 Feet Depth Table 4.4.3.1 Yard, Metals – Below 2 Feet Depth Table 4.4.4.1 Yard, Volatile Organic Compounds (VOCs) – Below 2 Feet Depth Alamo AOC: Table 4.2.1.2 Semi-Volatile Organic Compounds (SVOCs) Soil Surface to 2 Feet Depth Table 4.2.3.2 Metals – Soil Surface to 2 Feet Depth Table 4.4.1.2 Semi-Volatile Organic Compounds (SVOCs), Below 2 Feet Depth Table 4.4.3.2 Metals – Below 2 Feet Depth Table 4.4.4.2 Volatile Organic Compounds (VOCs) – Below 2 Feet Depth Table 4.6.3 Results for Volatile Organic Compounds analyses on Groundwater Samples from the Alamo AOC List of Figures Rensselaer Iron Works AOC: Figure 2.3.1 Initial Soil Sampling Plan Figure 2.5 Final Soil Sampling Locations Figure 4.2.3.1.2 Lead Concentrations in Foundry Site Investigation Report - DRAFT Page 6 Brownfields Assessment Demonstration Pilot – 5/16/06 #22026 South Troy Brownfields, Troy, New York © 2006, Sterling Environmental Engineering, P.C. Figure 4.3.1 Surface Soil Sampling Results Figure 4.5.1 Concentration Profile Along Bulkhead Figure 4.5.2 Concentration Profile Perpendicular to Bulkhead Figure 4.6 Groundwater Monitoring Wells Alamo AOC: Figure 2.3.2 Soil Sampling Locations Figure 4.3.2 Soil Sampling Results List of Appendices Appendix A Data Validation Report Site Investigation Report - DRAFT Page 7 Brownfields Assessment Demonstration Pilot – 5/16/06 #22026 South Troy Brownfields, Troy, New York © 2006, Sterling Environmental Engineering, P.C.