FEASIBILITY STUDY FOR SOILS AND BUILDINGS AT THE FUSRAP MAYWOOD SUPERFUND SITE MAYWOOD, NEW JERSEY August 2002 __________________________ Formerly Utilized Sites Remedial Action Program THIS PAGE INTENTIONALLY LEFT BLANK FEASIBILITY STUDY FOR SOILS AND BUILDINGS AT THE FUSRAP MAYWOOD SUPERFUND SITE MAYWOOD, NEW JERSEY August 2002 __________________________ prepared by U.S. Army Corps of Engineers, New York District Office, Formerly Utilized Sites Remedial Action Program with technical assistance from Stone & Webster, Inc. Under Contract No. DACW41-99-D-9001 THIS PAGE INTENTIONALLY LEFT BLANK TABLE OF CONTENTS Page LIST OF FIGURES ................................................................................................................................................... iv LIST OF TABLES ...................................................................................................................................................... v ABBREVIATIONS, ACRONYMS, AND SYMBOLS............................................................................................vi ES EXECUTIVE SUMMARY ......................................................................................................................... ES-1 1 INTRODUCTION AND NEED FOR ACTION ..........................................................................................1-1 1.1 PURPOSE, SCOPE, AND ORGANIZATION OF THE REPORT ..........................................................1-11 1.2 SCOPING ..................................................................................................................................................1-16 1.3 RELATED FEDERAL PROJECTS ..........................................................................................................1-17 1.4 CONSULTATION AND COORDINATION WITH OTHER AGENCIES .............................................1-17 2 THE SITE AND AFFECTED ENVIRONMENT........................................................................................2-1 2.1 DESCRIPTION OF SITE............................................................................................................................2-1 2.1.1 MISS...................................................................................................................................................2-1 2.1.2 Stepan Company Property .................................................................................................................2-3 2.1.3 Commercial/Government Vicinity Properties ....................................................................................2-3 2.1.4 Residential Vicinity Properties...........................................................................................................2-4 2.1.5 Buildings/Structures on Stepan ..........................................................................................................2-4 2.2 SITE HISTORY ..........................................................................................................................................2-5 2.3 ENVIRONMENTAL SETTING ...............................................................................................................2-14 2.3.1 Institutional Environment.................................................................................................................2-14 2.3.2 Current Land Use.............................................................................................................................2-16 2.3.3 Future Land Use and Institutional Controls ....................................................................................2-19 2.3.4 Topography, Drainage, and Surface Water .....................................................................................2-24 2.3.5 Geology/Soils ...................................................................................................................................2-26 2.3.6 Hydrogeology/Groundwater ............................................................................................................2-27 2.3.7 Ecology ............................................................................................................................................2-31 2.3.8 Climate, Meteorology, and Air Quality............................................................................................2-32 2.4 NATURE AND EXTENT OF FUSRAP CONTAMINATION ................................................................2-33 2.4.1 FUSRAP Waste ................................................................................................................................2-39 2.4.2 Representative Background/Baseline Concentration.......................................................................2-43 2.4.3 MISS.................................................................................................................................................2-43 2.4.4 Stepan Property................................................................................................................................2-48 2.4.5 Commercial/Government Vicinity Properties ..................................................................................2-50 2.4.6 Buildings/Structures.........................................................................................................................2-51 2.5 FUSRAP CONTAMINANT FATE AND TRANSPORT.........................................................................2-53 2.6 BASELINE RISK ASSESSMENT ...........................................................................................................2-56 2.6.1 Human Health Risk Assessment .......................................................................................................2-56 2.6.2 Ecological Risk Assessment .............................................................................................................2-76 3 IDENTIFICATION AND SCREENING OF REMEDIAL ACTION TECHNOLOGIES ......................3-1 3.1 INTRODUCTION .......................................................................................................................................3-1 3.2 IDENTIFICATION OF ARARS AND REMEDIAL ACTION OBJECTIVES ..........................................3-1 3.2.1 Development of ARARs ......................................................................................................................3-2 3.2.2 Identification of COCs and Proposed Cleanup Levels.....................................................................3-12 3.2.3 Remedial Action Objectives for the FUSRAP Maywood Superfund Site..........................................3-13 3.3 GENERAL RESPONSE ACTIONS..........................................................................................................3-14 3.3.1 No Action..........................................................................................................................................3-15 3.3.2 Institutional Control Actions............................................................................................................3-15 i TABLE OF CONTENTS (continued) Page 3.3.3 Containment Actions ........................................................................................................................3-16 3.3.4 Excavation and Removal..................................................................................................................3-16 3.3.5 Treatment Actions ............................................................................................................................3-17 3.3.6 Disposal Actions...............................................................................................................................3-18 3.4 IDENTIFICATION AND SCREENING OF TECHNOLOGIES .............................................................3-19 3.4.1 Identification of Remedial Technologies and Process Options........................................................3-19 3.4.2 Initial Screening of Process Options................................................................................................3-20 3.5 EVALUATION OF PROCESS OPTIONS ...............................................................................................3-35 3.5.1 Evaluation Criteria ..........................................................................................................................3-35 3.5.2 Evaluation of Technologies..............................................................................................................3-36 3.6 RESULTS OF SCREENING OF REMEDIAL ACTION TECHNOLOGIES..........................................3-46 4 DEVELOPMENT AND SCREENING OF ALTERNATIVES..................................................................4-1 4.1 INTRODUCTION .......................................................................................................................................4-1 4.2 DESCRIPTION OF FUSRAP MAYWOOD SUPERFUND SITE PROPERTY UNITS ...........................4-1 4.2.1 MISS...................................................................................................................................................4-2 4.2.2 Stepan.................................................................................................................................................4-2 4.2.3 Commercial/Government Properties .................................................................................................4-3 4.3 DEVELOPMENT OF ALTERNATIVES...................................................................................................4-3