Newark Bay Study - Passaic River Public Digital Library

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Table 1-1. Lists of main surveys available in the TSI database. Historical Newark Bay Surveys Authors 1990 Surface Sediment Investigation TSI 1991 Core Sediment Investigation TSI 1991 NOAA Phase I HRE Sediment Toxicity Investigation NOAA 1991 NOAA Phase I NST Sediment Investigation NOAA 1992 Core Sediment Investigation TSI 1993 Core Sediment Investigation - 01 (March) TSI 1993 Core Sediment Investigation - 02 (July) TSI 1993 NOAA Phase II NST Sediment Investigation NOAA 1993 USEPA Surface Sediment Investigation USEPA 1993/1994 REMAP Sediment Investigation USEPA 1993/1994 REMAP Sediment Quality Investigation USEPA 1994 Finfish and Benthic Invertebrate Survey TSI 1994 Surface Sediment Investigation TSI 1994 USACE Minish Park Investigation USACE 1995 Biological Sampling Program TSI 1995 Geotechnical Testing Program TSI 1995 RI Sampling Program TSI 1995 Surface Sediment Sampling Program TSI 1995 USACE Minish Park Investigation USACE 1996 Newark Bay Reach A Sediment Sampling Program TSI 1997 CSO Sampling Program TSI 1997 Newark Bay Reach B,C,D Sampling Program TSI 1998 Newark Bay Elizabeth Channel Sampling Program TSI 1998 USEPA REMAP Sediment Investigation USEPA 1999 Late Summer/Early Fall RI-ESP Sampling Program TSI 1999 Newark Bay Reach A Monitoring Program TSI 1999 Newark Bay Reach ABCD Baseline Sampling Program TSI 1999 Preliminary Toxicity Identification Evaluation Study TSI 1999 Sediment Sampling Program TSI 1999 USACE Drift Removal Monitoring Program USACE 1999/2000 Minish Park Monitoring Program TSI 2000 Spring RI-ESP Sampling Program TSI 2000 Toxicity Identification Evaluation Study TSI 2001 Supplemental RI-ESP Biota Sampling Program TSI 1-20
Table 1-2. Extent of historical data in Newark Bay for selected chemicals. TCDD DDT PAHs PCBs Hg Pb L S L S L S L S L S L S Surface water 4 4 4 4 4 4 4 9 9 28 9 28 Sediment 93 123 93 149 93 118 93 103 93 152 93 152 L: number of locations; S: number of samples 1-21 in water column data, as illustrated in Table 1-2. For all the measurements carried out by the different agencies/organizations/firms in Newark Bay between 1990 and 2001, there are only a handful of water column measurements for tetrachlorodibenzodioxin (TCDD), PCBs, PAHs, DDT, Hg and Pb. The paucity of data is even more pronounced for biological tissue: there are fewer locations and a small number of samples per organism collected over the years. Although more measurements are available on sediment quality, as discussed below, there is not enough information to provide a clear picture of the spatial and temporal trends as necessary to support modeling or risk assessment purposes. It is important to add that while CARP information was recently forwarded to EPA, this information was not publicly available at the time that the TSI database was developed. It is planned that the CARP information will be incorporated into future model development and model calibration work. An intrinsic part of data evaluation is understanding the physical characteristics of the sediments, the spatial and temporal distribution of the chemicals in the sediments, the spatial and temporal patterns in water column concentrations and in biota, as well as the hydrodynamic behavior likely to affect the stability of the sediments in terms of deposition and resuspension. The bulk of the data analysis is centered on establishing the horizontal and vertical distribution of the contaminants in the surface and bottom sediments, as well as in the water column and biota. The analysis is aimed at i) constructing a conceptual site model that guides the design of the hydrodynamic, sediment transport, fate and transport and bioaccumulation modeling framework, and ii) helping to design a sampling program that supports data modeling needs as well as geochemical, risk assessment and engineering analyses. 1.4.3.2 Data Evaluation: Sediments For the sediments, HydroQual has focused its historical data evaluation of Newark Bay on analyzing a subset of TSI’s database that covers field programs conducted between 1991 and 2001. This database is available on the www.ourPassaic.org project website. To better view and analyze the data, map-based spatial representations of some of the chemical concentrations were developed, in addition to two-dimensional plotting templates for rendering the data in the longitudinal direction from the mouth of the Passaic River along a north-south axis that extends to the lower end of Newark Bay, and easterly into Kill van Kull (Figure 1-6). The purpose of this analysis is to gain a better understanding of the spatial distribution of contaminants in the water column and sediment, two important environmental compartments in Newark Bay. It is also important to recognize that
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