Newtown Creek Superfund Site Risk Assessment Data CAG Meeting December 16, 2015

Transcription

1 Region 2 serving the people of New Jersey, Newtown Creek Superfund Site Risk Assessment Data CAG Meeting December 16, 2015 CSTAG Meeting May 19 20, 2014 May 19,

2 Region 2 serving the people of New Jersey, Objectives Identify, quantify, and understand the distribution of siterelated CERCLA hazardous substances and other stressors that may impact the ecology and quality of the Study Area sediment, water, and biota Understand the bioavailability of siterelated CERCLA hazardous substances Identify potential current and future human health and ecological risks Evaluate the uncertainty of the risk estimates 2

3 Risk Assessment Process Planning Planning and Scoping Process: start the process with planning and research Step 1 Hazard Identification: examine whether identified contaminants have the potential to cause harm to humans and environment, and if so, under what circumstances Step 2 Exposure Assessment: Measure/estimate the magnitude, frequency, and duration of receptor exposure to contaminants Step 3 Toxicity/Effect Assessment: Examine the relevant toxicity/effect information of contaminants Step 4 Risk Characterization: Examine how well the data support conclusions about the nature and extent of the risk from exposure to contaminants 1

4 Media Sampled for Risk Assessments Surface water (Ecological and Human Health) Surface sediment (Ecological and Human Health) Ambient air (Human Health) Fish tissue (Ecological and Human Health) Blue Crab tissue(ecological and Human Health) Mussel tissue (Ecological) Invertebrate tissue (Ecological) Also conducted toxicity tests, wildlife surveys and invertebrate surveys (Ecological) 1

5 Region 2 serving the people of New Jersey, Study Area Surface Water Stations Total Surface Water Samples: Study Area: 337 Reference Areas: 31 5

6 Region 2 serving the people of New Jersey, Study Area Surface Sediment Stations Total Surface Sediment Samples: Study Area: 463 Reference Areas: 143 6

7 Region 2 serving the people of New Jersey, Study Area Ambient Air Sampling Locations Total Ambient Air Samples: Study Area: 24 Background: 5 7

8 Region 2 serving the people of New Jersey, Fish Sampling Zones 8

9 Region 2 serving the people of New Jersey, Program BHHRA Fish BHHRA Crab BERA Crab BERA Fish Target Sample Size Study Area Reference Areas Study Area Fish and Crab Sampling Stations 9

10 Baseline Ecological Risk Assessment 1 0

11 Baseline Ecological Risk Assessment Conceptual Site Model Receptors Phytoplankton, aquatic plants, zooplankton, invertebrates, blue crab, amphibians and reptiles, fish (mummichog, spot (now white perch), striped bass, Atlantic menhaden), birds (belted kingfisher, green heron and spotted sandpiper), raccoon Data: Sample collection numbers Fish tissue concentrations in mummichog from Newtown Creek and four reference areas for select compounds (PCBs, PAHs and copper) Worm tissue and sediment concentrations from Newtown Creek for select compounds (PCBs, PAHs and copper Status 11

12 Ecological Exposure Pathways and Receptors Primary Sources 1 SecondarySources (ExposureMedia) 2 ExposurePathways 3 Baseline Ecological Receptors Aquatic Plants Invertebrates Fish Aquatic Birds Mammals Industrialand Private Stormwater Outfalls Upland Spillsand Releases Aquatic Plants (phytoplankton) Zooplankton Bivalves Benthic Invertebrates Epibenthic Invertebrates TopLevel Predatory Fish(striped bass) Omnivorous Fish (spot) Invertivorous Fish (mummichog) Sedimentprobing Shorebirds (spotted sandpiper) Piscivorous/ Invertivorous (green heron, BCNH) Piscivorous Birds (kingfisher, DCC) Omnivorous Mammals (raccoon) Surface Water Ingestion New York CityDepartment of EnvironmentalProtection Combined Sewer Overflows and Storm Sewer Outfalls Tissue (plant and/or animal) Direct Contact Ingestion TidalFlows Sediment (BAZ) Ingestion Direct Contact Deep Sediment Sink Porewater Key: Complete and significant exposurepathway Acronyms: BAZ = biologically active zone Complete exposure pathway, but insignificant BCNH = blackcrowned night heron Blank cells indicate an incomplete exposure pathway DCC = doublecrested cormorant Atmospheric Deposition Sediment(deep) Notes: 1 = For clarity, therelationship between primaryand secondarysourceswas simplified. Everyprimary sourcedoesnotimpact all secondary sources. Runoff and Infiltration Groundwater 2 = Interactions between sediment, porewater, and biotaaresimplified; all interactions within thebaz areassumed to involve porewater as well, at least to some degree. 3 = Note thattherelative importanceofeach ofthesepathways (sediments and water, directcontact,and ingestion) varies amongspecies and possiblyamong habitats andwill beconsidered intheexposureassessment duringthe Baseline Ecological Risk Assessment. 12

13 BERA Surface Sediment Receptor StudyArea Reference Areas Pathway Benthic Invertebrates Benthic Invertebrates Benthic Invertebrates Direct Exposure Benthic Community Health Benthic Toxicity Fish Incidental Ingestion Wildlife (Study Area wide) Wildlife (Intertidal) Incidental Ingestion Incidental Ingestion 13

14 BERA Benthic Invertebrates Bioavailability Pathway/Analytes Bulk Sediment Acidvolatilesulfide (AVS) and Simultaneously extracted metals (SEM) Porewater Metals, ammonia, sulfide Study Area Reference Areas Comments Toxicity tests + plus additional benthic community Insitu cores Centrifugation Metals Toxicity Tests(peepers) 34 PAHs Toxicity Test(SPME) PCB Congeners Toxicity Test(SPME) Pesticides Toxicity Test(SPME) SPME Solidphase microextraction 14

15 BERA Tissue Receptor Study Area a Reference Areas a Pathway Striped bass Receptor; wildlife prey Atlantic menhaden Wildlife prey Mummichog Receptor; wildlife prey Blue crab Receptor; wildlife prey Ribbed mussel 10 NA Polychaete (worms) 13 b NA Notes: a= Eachcomposite consisted ofaminimum of5individuals b= Fivereplicatesat eachstation NA = Not applicable Specialstudy; Study Area receptor; wildlife prey Specialstudy; Study Area receptor; wildlife prey 15

16 Region2 servingthe peopleofnewjersey, Total PAH in Mummichog 1000 Reference Area 100 Whole Body µg/kg 10 1 FishZone1 FishZone2 FishZone3 FishZone4a FishZone4b FishZone5 Westchester C.(Ind/CSO) Head of Bay(Ind/nonCSO) Spring C.(nonInd/CSO) Gerritsen C.(nonInd/nonCSO) 16

17 Region2 servingthe peopleofnewjersey, Total PAH Bioaccumulation Polychaetes Tissue 1000 DK WC MC EK/EB Total PAH(17)(KM)(MDL) microgram/kg Distance in Miles DK WC Surface Sediment MC EK/EB Total PAH(17)(KM)(MDL) microgram/kg Distance in Miles Newtown Creek Dutch Kills (0.89 mi) Whale Creek (0.93 mi) Maspeth Creek (2.42 mi) 3 4 English Kills (2.82 mi) East Branch (2.82 mi) 17

18 Region2 servingthe peopleofnewjersey, Total PCB Congener in Mummichog 100 Reference Area 10 Whole Body mg/kg FishZone1 FishZone2 FishZone3 FishZone4a FishZone4b FishZone5 Westchester C.(Ind/CSO) Head of Bay(Ind/nonCSO) Spring C.(nonInd/CSO) Gerritsen C.(nonInd/nonCSO) 18

19 Region2 servingthe peopleofnewjersey, Total PCB Congener Bioaccumulation Polychaetes Tissue 10 7 DK WC MC EK/EB TotalPCBCongener(KM)(MDL) ng/kg Distance in Miles DK WC Surface Sediment MC EK/EB TotalPCBCongener(KM)(MDL) ng/kg Distance in Miles Newtown Creek Dutch Kills (0.89 mi) Whale Creek (0.93 mi) Maspeth Creek (2.42 mi) 3 4 English Kills (2.82 mi) East Branch (2.82 mi) 19

20 Region2 servingthe peopleofnewjersey, Copper in Mummichog 10 Reference Area Whole Body mg/kg 1 FishZone1 FishZone2 FishZone3 FishZone4a FishZone4b FishZone5 Westchester C.(Ind/CSO) Head of Bay(Ind/nonCSO) Spring C.(nonInd/CSO) Gerritsen C.(nonInd/nonCSO) 20

21 Region2 servingthe peopleofnewjersey, Copper Bioaccumulation Polychaetes Tissue 10.0 DK WC MC EK/EB Copper mg/kg Distance in Miles DK WC Surface Sediment MC EK/EB 1000 Copper mg/kg Distance in Miles 3 4 Newtown Creek Dutch Kills (0.89 mi) Whale Creek (0.93 mi) Maspeth Creek (2.42 mi) English Kills (2.82 mi) East Branch (2.82 mi) 21

22 Status Draft Report o Scheduled for submittal on February 2,

23 Human Health Risk Assessment 2 3

24 Human Health Risk Assessment Conceptual Site Model o o Current Land Use Future Land Use Tissue Samples Concentrations in Striped Bass and Blue Crab o o o Status o o Total PAH Total PCB Copper Dispute Resolution Fish and Crab Consumption Rate Report 2 4

25 Current Human Health Exposure and Receptors Preliminary Human Health Exposure Pathways PrimarySource 1 SecondarySource (Exposure Media) Exposure Routes Current Potential Human Health Receptors Residents and Recreational Users Workers Unauthorized Users Industrial andprivate Stormwater Outfalls Upland Spills and Releases Recreational Anglers/Crabbers Recreational Boaters Swimmers/ Bathers Shoreline Recreational Users LandsideWorkers DocksideWorkers Trespassers/ Homeless Surface Water Incidental Ingestion of Surface Water New YorkCityDepartment of Environmental Protection combined sewer overflows (CSOs)andstorm sewer outfalls(ssos) Dermal Contact with Surface Water Inhalation of Volatiles Tidal Flows Tissue Ingestion of Fish/Shellfish Sediment Incidental Ingestion of Sediment Deep Sediment Sink Atmospheric Deposition Porewater Dermal Contact with Sediment Inhalation of Volatiles Sediment (deep) Ingestion of and Dermal Contact with Groundwater Runoff and Infiltration Groundwater PotentiallyComplete andsignificant Pathway Quantitative Assessment Notes: 1 = Primary sources do not impact all secondary sources ormedia. 2 = The inhalation ofairwill beincluded as a complete exposurepathwayto human receptorswithin the Study Area. Thisana lysis will begin with ascreening level evaluation of Phase1 ambient airdataas discussed inphase 2 WorkPlan Section PotentiallyComplete butinsignificant Pathway Qualitative Assessment Blankcells indicateincomplete pathway 25

26 Future Human Health Exposure and Receptors Preliminary Human Health Exposure Pathways PrimarySource 1 Secondary Source (Exposure Media) Exposure Routes Future Potential Human Health Receptors Residents and Recreational Users Workers Unauthorized Users Industrial andprivate Stormwater Outfalls Upland Spills and Releases Recreational Anglers/Crabbers Recreational Boaters Swimmers/ Bathers Shoreline Recreational Users RecreationalUsers Plank Road Area LandsideWorkers DocksideWorkers Construction WorkersHunter s Point South Trespassers/ Homeless Surface Water Incidental Ingestion of Surface Water New YorkCityDepartment of Environmental Protection combined sewer overflows (CSOs)andstorm sewer outfalls(ssos) Dermal Contact with Surface Water Inhalation of Volatiles Tidal Flows Tissue Ingestion of Fish/Shellfish Sediment Incidental Ingestion of Sediment Notes: Deep Sediment Sink Atmospheric Deposition Runoff and Infiltration Porewater Sediment (deep) Groundwater Dermal Contact with Sediment Inhalation of Volatiles Ingestion of and Dermal Contact with Groundwater 1 = Primary sources do not impact all secondary sources ormedia. 2 = The inhalation ofairwill beincluded as a complete exposurepathwayto human receptorswithin the Study Area. Thisana lysis will begin with ascreening level evaluation of Phase1 ambient airdataas discussed inphase 2 WorkPlan Section = The process for evaluating human exposure to groundwater is described in Section ofthephase 2 RI Work Plan PotentiallyComplete andsignificant Pathway Quantitative Assessment PotentiallyComplete butinsignificant Pathway Qualitative Assessment Blankcells indicateincomplete pathway 26

27 BHHRA Tissue Composite Samples a BHHRA Species Study Area Reference Areas Comments Striped bass Fillet White perch 7 5 Fillet Bluecrab Combinedmuscle and hepatopancreas 27

28 100 Total PAH in Striped Bass Reference Area Fillet µg/kg Reference Area Whole Body µg/kg FishZone1 FishZone2 FishZone3 FishZone4a FishZone4b FishZone5 Westchester C.(Ind/CSO) Head of Bay(Ind/nonCSO) Spring C.(nonInd/CSO) Gerritsen C.(nonInd/nonCSO) 28

29 10 Total PCB Congener in Striped Bass Reference Area 1 Fillet mg/kg Reference Area WholeBody mg/kg FishZone1 FishZone2 FishZone3 FishZone4a FishZone4b FishZone5 Westchester C.(Ind/CSO) Head of Bay(Ind/nonCSO) Spring C.(nonInd/CSO) Gerritsen C.(nonInd/nonCSO) 13

30 1.0 Copper in Striped Bass Reference Area Fillet mg/kg Reference Area WholeBody mg/kg FishZone1 FishZone2 FishZone3 FishZone4a FishZone4b FishZone5 Westchester C.(Ind/CSO) Head of Bay(Ind/nonCSO) Spring C.(nonInd/CSO) Gerritsen C.(nonInd/nonCSO) 30

31 1000 Total PAH in Blue Crab Reference Area Hepato and Muscle µg/kg Reference Area Whole Body µg/kg 10 1 FishZone1 FishZone2 FishZone3 FishZone4a FishZone4b FishZone5 Westchester C.(Ind/CSO) Head of Bay(Ind/nonCSO) Spring C.(nonInd/CSO) Gerritsen C.(nonInd/nonCSO) 31

32 1 Total PCB Congener in Blue Crab Reference Area HepatoandMuscle mg/kg Reference Area WholeBody mg/kg FishZone1 FishZone2 FishZone3 FishZone4a FishZone4b FishZone5 Westchester C.(Ind/CSO) Head of Bay(Ind/nonCSO) Spring C.(nonInd/CSO) Gerritsen C.(nonInd/nonCSO) 32

33 100 Copper in Blue Crab Reference Area HepatoandMuscle mg/kg Reference Area WholeBody mg/kg 10 1 FishZone1 FishZone2 FishZone3 FishZone4a FishZone4b FishZone5 Westchester C.(Ind/CSO) Head of Bay(Ind/nonCSO) Spring C.(nonInd/CSO) Gerritsen C.(nonInd/nonCSO) 17

34 Fish and Crab Consumption Rate (FCR) (in gram/day) Receptor EPA Directed FCR Fish Adult Angler 26 Adolescent Angler 17 Child of Angler 9 Crab Adult Crabber 20.9 Adolescent Crabber 14 Child of Crabber 7 1

35 Equation for Estimating Potential Exposure from Fish and Crab Consumption 1

36 Status Draft Report o Received on November 2 o Contained data not approved by EPA o Revised draft report expected by end of December 31 36