Ecological Evaluation Technical Guidance - State of New Jersey

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Appendix I - Using the Toxic Equivalency (TEQ) Approach to Evaluate Dioxin,Furan, and Dioxin-like PCB ResultsAnalytical MethodsLaboratories performing dioxin analysis must be certified by NJDEP for either USEPASW846 Method 8290 or USEPA Method 1613B (N.J.A.C. 7:26E-2.1(a)1) (USEPA1994b and 1994c). Laboratories performing PCB congener analysis must be certified byNJDEP for USEPA Method 1668A/B (USEPA 1999c). Full laboratory deliverables arerequired per N.J.A.C. 7:26E 2.1(a)15i.If a phased approach to sampling is used, samples from outside the source area may bestored at the laboratory until source area results are reviewed. Samples for dioxinanalysis in soil, sediment, wipe, and chip samples may be archived at the laboratory forup to one year to extraction, followed by one year to analysis. Stored nonaqueoussamples are to be kept in the dark at or below -10 o C. Stored aqueous samples are to bekept in the dark at zero to four degrees C. Sample extracts from both may be stored inthe dark, below -10 o C for one year.TEQ ApproachAs described in 6.4.7, 17 dioxin and furan congeners and 12 dioxin-like PCBs producesimilar biological effects with varying potencies and generally act together in an additivefashion. To facilitate the assessment of the most toxic components of these complexmixtures, the 29 dioxin-like congener concentrations from biotic and abiotic media aremultiplied by internationally recognized toxic equivalency factors (TEFs), which areorder of magnitude estimates of the toxicity of the individual congeners relative to2,3,7,8-TCDD that have been developed by the World Health Organization (WHO);2,3,7,8 - TCDD is assigned a TEF of 1. The resulting concentrations are summed todetermine the TEQ concentration. Each of the 29 designated dioxin-like compounds hasbeen assigned a fish, avian, and mammalian TEF (Van den Berg et al., 1998, 2006;www.who.int/ipcs/assessment/tef_update/en/print.html). Only the 2,3,7,8-substitutedPCDDs and PCDFs are factored into the summation for the sample TEQ (i.e., those listedby the laboratory as “other dioxins,” per congener category, are not included in the TEQ).Evaluation of Dioxins, Furans, and Dioxin-like PCBs for initial screening in theEcological EvaluationIn the ecological evaluation (EE), the TEQ approach is used to initially characterize,screen, and present dioxin, furan, and dioxin-like PCB data by using TEFs for onereceptor class for a consistent and streamlined evaluation. The application of the avianTEFs to dioxin, furan, and dioxin-like PCB concentrations in abiotic media (soil,sediment, surface water) is recommended. The reasons for selecting the avian TEFs areas follows: Among the avian, mammalian, and fish TEFs, the avian and mammalianTEFs are generally similar and more conservative than the fish TEFs. Between the avianand mammalian TEFs, while the TEFs for PCB 126 (a highly toxic WHO PCB congener)are identical, the avian TEF for PCB 77 is higher than the mammalian, resulting in amore conservative TEC for PCB 77. It is appropriate to focus on PCB 77 in thescreening process since it is detected in media samples at greater frequency and at higherconcentrations than PCB 126. Therefore, using avian TEF scheme is the mostEcological Evaluation Technical Guidance Document 125Version 1.2 8/29/12
conservative approach from an ecological screening perspective. See Table I-1 for asummary of avian TEFs.Table I-1: Summary of WHO Avian TEF Values (Van den Berg et al., 1998)CompoundAvian TEFChlorinated dibenzo-p-dioxins2,3,7,8-TCDD 11,2,3,7,8-PeCDD 11,2,3,4,7,8-HxCDD 0.051,2,3,6,7,8-HxCDD 0.011,2,3,7,8,9-HxCDD 0.11,2,34,6,7,8-HpCDD < 0.001OCDD 0.0001Chlorinated dibenzofurans2,3,7,8-TCDF 11,2,3,7,8-PeCDF 0.12,3,4,7,8-PeCDF 11,2,3,4,7,8-HxCDF 0.11,2,3,6,7,8-HxCDF 0.11,2,3,7,8,9-HxCDF 0.12,3,4,6,7,8-HxCDF 0.11,2,3,4,6,7,8-HpCDF 0.011,2,3,4,7,8,9-HpCDF 0.01OCDF 0.0001Non-ortho-substituted PCBs3,3’,4,4’-tetraCB (PCB 77) 0.053,4,4’,5-tetraCB (PCB 81) 0.13,3’4,4’,5-pentaCB (PCB 126) 0.13,3’4,4’,5,5’-hexaCB (PCB 169) 0.001Mono-ortho-substituted PCBs2,3,3’4,4’-pentaCB (PCB105) 0.00012,3,4,4’,5-pentaCB (PCB 114) 0.00012,3’4,4’5-pentaCB (PCB118) 0.000012’,3,4,4’,5-pentaCB (PCB 123) 0.000012,3,3’,4,4’,5-hexaCB(PCB 156) 0.00012,3,3’,4,4’5’-hexaCB (PCB 157) 0.00012,3’4,4’5,5’-hexaCB (PCB 167) 0.000012,3,3’4,4’,5,5’-heptaCB (PCB 189) 0.00001TEQs for the three contaminant classes, PCDDs, PCDFs, and PCBs, are generated usingthe avian TEFs for each sample to afford evaluation of the relative contribution fromthese classes. The individual congener concentration multiplied by the TEF is theEcological Evaluation Technical Guidance Document 126Version 1.2 8/29/12
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Ecological EvaluationTechnical Guid
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6.2.1.3 Biological Sampling of Fish
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Acronyms and AbbreviationsADDAETAFA
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Executive SummaryThis document prov
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environmentally sensitive areas pur
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Figure 3-1: Flow diagram to describ
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assessment may also include evaluat
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“Hazard quotient” or “HQ” m
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“Site investigation” means the
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parameters as specified in ERAGS (i
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document otherwise). The investigat
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5.3.2.1 Potential Contaminant Migra
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71 0Sampling pointsSampling transec
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5.3.4 Background ConsiderationsIt i
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III. GroundwaterAnalytical data fro
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5.5 Ecological Evaluation ReportThe
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Step 1 - Preliminary Screening Leve
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specific measurements of receptor h
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Figure 6-2: Ecological Conceptual S
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ingested, air inhaled, or material
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Fugacity, which is described as the
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environment. As noted in ERAGS, the
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Sample SelectionAfter completing th
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While there are many laboratories t
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ioavailability, and by doing so, of
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For the purposes of surface water,
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higher trophic level receptors. Lip
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Details regarding surface water tox
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e present at intervals greater than
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elatively sedentary organisms that
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COPECs. The following references ar
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tests (USEPA, 2002e). After collect
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multiple reference area soils repre
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In ERAs, tissue residue analyses ar
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Objectives of the ERA: including a
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evaluation might necessitate the co
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N.J.A.C. 7:26E-4.8(c)1. The ERA may
Page 75 and 76: sediment (i.e., that fraction that
Page 77 and 78: Twelve dioxin-like PCB congeners ha
Page 79 and 80: indicates burial of potential dioxi
Page 81 and 82: of evidence for evaluating risk unt
Page 83 and 84: 7.2.1 Apparent Effects Threshold Ap
Page 85 and 86: when site conditions are most simil
Page 87 and 88: destroying 10 acres of the mature f
Page 89 and 90: ASTM (American Society for Testing
Page 91 and 92: Establishing Sediment Quality Crite
Page 93 and 94: N.J.A.C. (New Jersey Administrative
Page 95 and 96: USEPA. 1989c. Risk Assessment Guida
Page 97 and 98: http://www.epa.gov/owow/oceans/regu
Page 99 and 100: USEPA 2006a. Data Quality Assessmen
Page 101 and 102: Appendix A - Habitat Survey FormsEc
Page 103 and 104: Ecological Evaluation Technical Gui
Page 105 and 106: Appendix B - Sampling Procedures fo
Page 107 and 108: Appendix C - Surface Water Toxicity
Page 109 and 110: Short-term chronic studies, endpoin
Page 111 and 112: Appendix D - Sediment Toxicity Test
Page 113 and 114: Toxicity Test DesignSediment toxici
Page 115 and 116: Appendix E - Sediment Pore Water an
Page 117 and 118: The seven-day daphnid survival and
Page 119 and 120: esults are then evaluated using USE
Page 121 and 122: Surber or Square-foot BottomThis sa
Page 123 and 124: Appendix H - Soil Toxicity TestingS
Page 125: another sample may still have a sub
Page 129: Data PresentationTabular presentati
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