Ecological Evaluation Technical Guidance - State of New Jersey

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B. Collect a minimum of one soil sample topographically downgradient ofthe point or area of discharge; andC. Collect a minimum of one soil sample at a depression, if present.5.3.3 How to Collect SamplesThe following sections review the methodologies to be employed in collectingenvironmental samples to be used in the preparation of EEs. Also see Section5.5(a)iii and (a)iv for additional parameters required to be reported.5.3.3.1 Soils and SedimentsWhen COPECs are potentially present because of a surface discharge,samples should be collected from the zero to six inch interval, except forvolatile organic compounds (VOC), which should be collected from the six totwelve inch interval. When COPECs are potentially present because of asubsurface discharge or groundwater migration pathway or the accretion ofcleaner sediments over contaminated sediments may have occurred, samplesshould be collected from the point of discharge in soils or sediment and fromboth the zero to six inch and six to twelve inch interval in sediments,respectively. If historical evidence indicates the potential for contamination tobe present at intervals greater than six inches, sampling at depth also shouldbe considered to evaluate potential future risks from the sediments,particularly if future dredging or scouring is likely to occur. All soil andsediment must be collected as discrete rather than composite samples toascertain a more representative contaminant profile (N.J.A.C. 7:26E-3.4(a)2).If contaminants are found above the ESC, then delineation must be performedin accordance with N.J.A.C. 7:26E-4.8(c)1.5.3.3.2 Surface WaterSurface water samples should be collected in the following manner:(1) When COPECs are potentially present because of a seep or surfacedischarge, samples should consist of a seep/discharge sample and agrab surface water sample adjacent to the point of discharge;(2) When COPECs are potentially present because of sedimentcontamination or groundwater migration pathway, samples should becollected from the zero to six inch interval directly above thesediments; and(3) For general water contamination with no obvious discharge source,samples should be collected from the mid-column of water. Forcertain metals, the ESC are based on either total or dissolvedconcentration. For EE purposes, both dissolved and totalconcentrations provide useful information regardless of what the ESCis based on. Therefore, both filtered and non-filtered samples shouldbe collected for metals analysis.Ecological Evaluation Technical Guidance Document 25Version 1.2 8/29/12
5.3.4 Background ConsiderationsIt is important to establish background contaminant levels in sediment, surfacewater, and soil on or near the site, but not influenced by the site to:(1) refine the COPEC list;(2) help determine if the contaminants are site-related;(3) aid in the assessment of the site’s contaminant levels relative to theregional contaminant levels; and(4) develop RMD goals for ESNRs.Many of the state’s soils, water bodies, and wetlands, especially in urban andindustrial settings, have become contaminated by historic point and non-pointdischarges (diffuse anthropogenic pollution), making it difficult to distinguishbetween contaminants from the site and off-site sources. Additionally, in tidalwater bodies, upgradient and downgradient sediments and surface water can becontaminated by the site because of tidal influences, which can add to thecomplexity of determining background contaminant concentrations. However, itis paramount that the investigator attempt to distinguish between site-related anddiffuse anthropogenic contamination or contamination from offsite sources. Ifpotential sources of contamination are present upgradient of the site, and it isbelieved that these sources have contributed to the contamination detected on-site,these upgradient areas should be sampled, and professional judgment shoulddictate how these data are to be interpreted and used. The investigator maychoose to supplement data collected from background locations with data fromrelevant and appropriate regional databases. In circumstances where backgrounddata cannot be collected, these databases may serve as the source of backgrounddata.For the determination of background contaminant levels in sediment and surfacewater, samples should be collected from a minimum of three to five sedimentlocations (the larger number of samples is recommended because of sedimentheterogeneity) from the zero to six inch interval, and other intervals as appropriateto correspond to site-related samples. For tidal water bodies, upstream areasinfluenced by tides should be sampled at locations upstream of any mixing zoneto assess background contaminant levels.For the determination of background contaminant levels in soils, the investigatorshould collect a minimum of three to five soil samples from the zero to six inchdepth interval and other six inch intervals as appropriate.All background area samples should be collected from areas outside the site’spotential influence. The samples should not be collected from locations directlyinfluenced by or in proximity to other obvious sources of contamination (e.g.,other contaminated sites, sewer and storm-water outfalls, tributaries, and otherpoint and nonpoint source discharges). Background area locations should be ofsimilar physical, chemical, and biological structure (e.g., similar TOC, grain size,etc.), and at a minimum should receive the same chemical analyses as site-relatedsamples. For a relatively small background area sample size, the mean and rangeof background contaminant concentrations should be used for comparison withEcological Evaluation Technical Guidance Document 26Version 1.2 8/29/12
Page 1 and 2: Ecological EvaluationTechnical Guid
Page 3 and 4: 6.2.1.3 Biological Sampling of Fish
Page 5 and 6: Acronyms and AbbreviationsADDAETAFA
Page 7 and 8: Executive SummaryThis document prov
Page 9 and 10: environmentally sensitive areas pur
Page 11 and 12: Figure 3-1: Flow diagram to describ
Page 13 and 14: assessment may also include evaluat
Page 15 and 16: “Hazard quotient” or “HQ” m
Page 17 and 18: “Site investigation” means the
Page 19 and 20: parameters as specified in ERAGS (i
Page 21 and 22: document otherwise). The investigat
Page 23 and 24: 5.3.2.1 Potential Contaminant Migra
Page 25: 71 0Sampling pointsSampling transec
Page 29 and 30: III. GroundwaterAnalytical data fro
Page 31 and 32: 5.5 Ecological Evaluation ReportThe
Page 33 and 34: Step 1 - Preliminary Screening Leve
Page 35 and 36: specific measurements of receptor h
Page 37 and 38: Figure 6-2: Ecological Conceptual S
Page 39 and 40: ingested, air inhaled, or material
Page 41 and 42: Fugacity, which is described as the
Page 43 and 44: environment. As noted in ERAGS, the
Page 45 and 46: Sample SelectionAfter completing th
Page 47 and 48: While there are many laboratories t
Page 49 and 50: ioavailability, and by doing so, of
Page 51 and 52: For the purposes of surface water,
Page 53 and 54: higher trophic level receptors. Lip
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Page 57 and 58: e present at intervals greater than
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Page 65 and 66: multiple reference area soils repre
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Twelve dioxin-like PCB congeners ha
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indicates burial of potential dioxi
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of evidence for evaluating risk unt
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7.2.1 Apparent Effects Threshold Ap
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when site conditions are most simil
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destroying 10 acres of the mature f
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ASTM (American Society for Testing
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Establishing Sediment Quality Crite
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N.J.A.C. (New Jersey Administrative
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USEPA. 1989c. Risk Assessment Guida
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http://www.epa.gov/owow/oceans/regu
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USEPA 2006a. Data Quality Assessmen
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Appendix A - Habitat Survey FormsEc
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Ecological Evaluation Technical Gui
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Appendix B - Sampling Procedures fo
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Appendix C - Surface Water Toxicity
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Short-term chronic studies, endpoin
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Appendix D - Sediment Toxicity Test
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Toxicity Test DesignSediment toxici
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Appendix E - Sediment Pore Water an
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The seven-day daphnid survival and
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esults are then evaluated using USE
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Surber or Square-foot BottomThis sa
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Appendix H - Soil Toxicity TestingS
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another sample may still have a sub
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conservative approach from an ecolo
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Data PresentationTabular presentati
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Ecological Evaluation Technical Guidance - State of New Jersey

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