Presentation on theme: "U.S. and Canadian Lakewide Contaminant Monitoring"— Presentation transcript:
1U.S. and Canadian Lakewide Contaminant Monitoring Beth MurphyU.S. EPA, Great Lakes National Program OfficeClarkson University Research ConsortiumEnvironment CanadaU.S. EPA Great Lakes National Program OfficeOntario Ministry of the EnvironmentU.S. Geological SurveyNOAAMANY PARTNERS!!!!
2Overview of Presentation Connection between CSMI and Monitoring ProgramsStatus of contaminants monitoring in the Great LakesLegacy contaminantsEmerging contaminantsOverview of U.S.EPA and Environment Canada Great Lakes monitoring and surveillance programsFuture Directions in Emerging Contaminant ResearchThis presentation is a summation of ongoing monitoring on both sides of the border in as many media as I could collect information on. Forgive me if I have missed something. I want to walk you through the general connection between chemicals monitoring and the CSMI process, a general status of chemical levels, some individual information on existing monitoring programs and the future direction of emerging contaminant research / monitoring in the Great Lakes.I had to consider revising this presentation once it exceeded 70 slides. I will work with Liz on fine tuning “The Beast” for a future webinar with the Chemical Workgroup.
3Chemical Monitoring Programs & CSMI In general, chemical monitoring is not specific to any one lake. Programs collect and analyze data on a basin wide level.Programs are typically unable to incorporate annual changes into sampling regime.Results are compared and summarized through peer reviewed journal articles, governmental reporting (indicators), presentations, and collaborations between programs.Programs incorporating Legacy and “Emerging” chemicals into routine analysis.Funding dependant.Let’s talk about how chemicals fits into the CSMI process. In general, chemical monitoring is not specific to any specific lake and is typically conducted on a basin wide level. Individual Monitoring programs are unable to incorporate annual changes into sampling regimes due to hurdles with QA and cost but mostly because several years of data is ideal for assessment of chemicals. The chemical community is a relatively small one and that we are all in communication with each and try to summarize info, when possible and appropriate, over common chemicals and media. Monitoring programs are shifting toward surveillance of emerging chemicals while maintaining legacy chemical analysis and, as always, program details are subject to available funding.Key take home message – An endorsement for the continuation of long term monitoring programs, with an emphasis on emerging chemicals, from the Lake Superior group, and other groups, will be beneficial as it lends credibility to the process and allows programs to incorporate CSMI into the statements of work of grants/ cooperative agreements during competition.
4Chemical Prioritization CSMIGreat Lakes Water Quality AgreementAnnex 3 Chemicals of Mutual Concern“New” list of chemicals is in developmentIn previous agreement – included legacy contaminantsPCBs, organochlorine pesticides, mercuryChemical Management PlanMonitoring and Surveillance Working GroupPriorities integrated with Risk Assessment and ManagementIncludes new, emerged and emerging contaminantsPBDEs and other flame retardants, PFCs, Siloxanes, other metalsHistorical Program trendsSurveillanceCollaboration potentialMany of the programs have similar target analyte lists. The important take home message is that overlapping analyte lists lead to collaboration between programs, when possible and appropriate. Additionally, there are several guiding authorities that help in prioritization of chemicals for monitoring and surveillance, they are listed here.
5Legacy Contaminants in the Great Lakes Routine monitoring of: organochlorine pesticides, polycyclic aromatic hydrocarbons, PCBs, etc.Concentrations of legacy contaminants have generally declined in Great Lakes mediaPCBs & mercury are still driving fish consumption advisoriesLots of research & monitoring has been done on legacy contaminants in Great Lakes media.Concentrations are generally on the decline.Not a lot of new news, but I want to emphasize that these legacy chemicals continue to be present in high enough concentrations that they are the major driver behind fish consumption advice.
6Current Use ChemicalsRoutine monitoring of: Flame Retardants, Hg, PCDD/Fs, Musks, PFOS/A, etc.Many of these chemicals concentrations are at steady state or are declining .Method development and benchmark criteria continue to make the analysis and interpretation of some of these chemicals difficult.Here is an example of the types of current use chemicals that are typically included in monitoring programs.
7Emerging Contaminants in the Great Lakes Evolving list of chemicals for surveillance and monitoring:Polychlorinated napthalenesHalogenated CompoundsFluorotelomer alcoholsSiloxanesNon-PBDE flame retardantsPharmaceuticals & Personal care products (PPCPs)Perfluorinated compoundsBr / Cl compoundsNon-halogenated compoundsDegradation ProductsOrganometallic compoundsMany programs are beginning to incorporate emerging contaminant monitoring / surveillance into their base work.New contaminants proposed for surveillance and method development include: siloxanes, personal care products such as musk fragrances, polychlorinated napthalenes, pharmaceuticals, perfluorinated compounds, Fluorotelomer Alcohols, non-PBDE flame retardantsMany programs are needing to upgrade analytical equipment for enhanced surveillance capabilities.Additionally identification of standards and the development of benchmark criteria continue to make this work challenging.
8Great Lakes Monitoring & Surveillance Programs AirFishSediment + +BiotaWaterTributaryYou can see that there is good spatial coverage of monitoring programs in the Basin and I want to emphasize the we think we are doing a pretty good job for right now.Not all chemical monitoring is represented on this slide, but this a good indication of the amount of monitoring being conducted.I want to take a min. here to identify that the media by media assessment I will be providing next has program and contact information listed whenever possible. This is provided as a way to highlight the massive amount of work that is being conducted and to provide credit where it is deserved. However, I do think that it is important to emphasize that when identifying your priorities for Lake Superior, it is most appropriate to work with the Government contact and not the principal investigator of a cooperative agreement. We will be best able to try to meet your needs and provide you with the most up to date information. I have listed a program website whenever possible and I encourage you to look at them for additional detail regarding each program and to identify the most recent publications. Also, as I mentioned before, I plan to go in to much more detail regarding chemical monitoring in the Great Lakes during a future webinar.
9Whole Fish MonitoringNational Fish Contaminants Monitoring and Surveillance Program – Environment CanadaDaryl McGoldrickGreat Lakes Fish Monitoring and Surveillance Program – US EPAElizabeth MurphyClarkson University -Whole fish…Differences in the program to highlightindividuals vs. compositesage vs. lengthAnnual collection vs. alternating collectionBoth programs maintain a historical archive dating back into the 70s.
10Mercury in Lake Superior Lake Trout Declines observed until the early ~1990Appears as though concentrations have been increasing.Consistent with observations in other studies in the Great Lakes Region - see Ecotoxicology 20(7)Declines observed until the early ~1990Appears as though concentrations have been increasing.A 2011 Publication in Ecotoxicology by Zananski et al., using the US data set, indicate that Lake Superior fish have the highest total Hg concentrations of the 5 great lakes and that ther eis a current increasing trend at the Apostle Islands site.Source: SOLEC 2011 Draft Technical report
11GLFMSP New Chemicals in Lake Trout P. H. Howard and D. C. G. Muir, Environmental Science and Technology 2010, 44, 2277Tetraphenyl tinTriphenyl tin hydroxideConfirmed- Catalyst – non-toxic?- Observed in Blubber by E. Hoh, ES&T 2012, 46, 8001.- Biocide- Identified on the Howard/Muir 610 list as a potential PBT chemicalTriphenyl phosphateEasily OxidizedTriphenyl phosphiteM/H List top 50This is a slide from the Clarkson Consortium that identifies the confirmation of new chemicals in GLFMSP fish using the Muir / Howard list as a jumping off point.Tetraphenyl tins used a starting materials or catalysts – and is considered non-toxic. However, this chemical has been confirmed in Great Lakes lake trout and Atlantic mammals suggesting a significant environmental prevalence.Triphenyl tins used as biocides and is considered toxic. The triphenyl tin hydroxide has is identified by Howard and Muir as a potential PBT. This particular compound was not detected in trout samples. However, method limitations may have excluded possible detection of this compound in the trout matrix.Triphenyl Phosphite is a candidate listed on the Howard/Muir 2010 top 50 list. The Clarkson Consortium has obtained neat standards for method development purposes and observed transformation to the triphenyl phosphate form. This form has been confirmed in fish (GLFMSP) and air (IADN).
12Lake of the Year (LOY) Program Joint CSMI GLFMSPLake of the Year (LOY) ProgramDetailed Bioaccumulation StudyWater (dissolved and particulate)PhytoplanktonZooplanktonMusselsBenthic macro invertebratesForage fishLake troutTop to bottom lake snapshotHg Bioaccumulation Lake SuperiorI also want to emphasize that the whole fish monitoring programs are expanding their assessments of chemicals into other levels of the food chain. The Environment Canada program has been analyzing forage fish for years and the EPA program has recently incorporated bioaccumulation and trophic structure assessments into the program coordinated with the CSMI schedule. So far we have completed Superior, Huron, and Ontario.This slide displays the bioaccumulation of mercury in the 2011 Lake Superior food web. As you know trophic position increases with increasing delta N15 (trophic position marker). The current plot captures mercury concentration vs. delta N 15 enrichment from seston, zooplankton, forage fish up to lean and siscowet lake trout. Future work will supplement the isotope data with fatty acid profiles to elucidate mid-term dietary habits.
13Sport Fish Monitoring Fillet Monitoring Programs U.S. States MinnesotaWisconsinMichiganOMOETribes / First NationsGLIFWCMn ChippewaThere are many fillet monitoring programs in the Great Lakes for assessment of chemicals as they relate to human health. In the U.S., the States / Tribes issue advice and OMOE issues advice for the Province of Ontario.Minnesota – Pat McCannWisconsin – Candy Shrank and Henry AndersonMichigan – Korey Groetch and Michelle BruneauOMOE – Satyendra BhavsarAssessment of Human HealthTraditionally limited to legacy chemicalsStates collect and analyze Great Lakes samples less frequentlyInformation drives fish consumption adviceEmerging chemical analysis supplemented by federal ProgramsSpecies selected based upon consumption and popularity for sport fishing
14Chemicals Driving Fish Consumption Advice LakeState/ProvincePCBDioxinMercuryChlordaneMirexToxapheneSuperiorMichigan1xWisconsinMinnesotaOntarioHuronErieNew YorkOhioPennsylvaniaMichiganIllinois xIndianaContaminants driving fish consumption advisories. Not all states/provinces issue advisories for all of the listed contaminants. Notice that PCBs are checked for every lake / state/ provinceSource: Great Lakes states and Ontario Ministry of the Environment. State of the Great Lakes 2011 Draft Technical report.
15Air Monitoring Integrated Atmospheric Deposition Network Environment CanadaHayley HungU.S. EPATodd NettesheimIndiana UniversityGreat Lakes Atmospheric ResearchLiisa JantunenMahiba ShoeibMercury Deposition NetworkIllinois State Water SurveyDavid Gay, Program CoordinatorThere is a lot going on for Air Monitoring in the Great Lakes. This is the contact information for IADN, the MDN, and general research.IADN There are 5 master stations – 1 per lake – and 8 satellite stations currently in operation (2 in urban areas in the U.S.)Annex 15 of the 1987 GLWQA and the 1990 Clean Air Act Amendments called for the monitoring of airborne toxic substances and the establishment of IADN.The data are used to …Determine atmospheric loadings to the Great LakesAnalyze spatial and temporal trends in concentrationsTrack progress of restoration / remediation / emission reductionsIdentify sources –IADN key message for Lake Superior – PBEB (pentabromoethylbenzene – additive flame retardant used in thermoset polyester resins for application such as circuit boards, textiles, adhesives, and wire and cable coatings. Unexpectedly, the concentration of PBEB was highest at the remote site of Eagle Harbor in northern Michigan. This is unusual because many compounds exhibit a strong correlation to population (highest in Chicago and Cleveland). This suggests a local point source – possible scrap recycling or related to mining. But, these are just hypotheses at this point.MDN - The National Atmospheric Deposition Network's Mercury Deposition Network. Stations in all 50 United States, initiated in National database of weekly concentrations of total mercury in precipitation and the seasonal and annual flux of total mercury in wet deposition.
16Levels of tetrabromo esters are rapidly increasing in the air TBB and TBPH (Tetrabrominated Benzoate and Phthalate)Components of Firemaster the replacement for the penta-BDE mixtures. (off market in 2005)High production volume chemicals (greater than 1 million pounds per year)Found to double in GL air about every yearConcentrations in environment are now rapidly approaching the levels of total PBDEsBut actually we are starting to find their replacement – organophosphate FRs at high levels in the environment, with an indication that they are now industry’s preferred FR.It is important to track FRs collectively – from an emissions / management perspective and perhaps even a toxicity perspective.LAKE SUPERIOR example…NEED to add a talking point on the BFR found in very high concentrations at Eagle Harbor!Source: Ma et al., ES&T 2012, 46(1),
17Organo-Phosphate Esters in Great Lakes Air Atmospheric ResearchOrgano-Phosphate Esters in Great Lakes AirUsed mostly as flame retardants and plasticizers but have many other usesCanadian Chemical Management Plan Priority compoundsHigh volume production compoundsLevels are very high for indoor air (100s ng/m3) and dust (1000s ng/g).TCEP is being phased out in North America and has been banned in EUTCEP: tris(2-chloro ethyl) phosphateTCPP: tris(2-chloro propyl) phosphateTPP: tri-phenyl phosphateTriphenyl phosphate also found in fish, from a few previous slides.OPEs were analysed in air samples from Lake Superior 2011 and in archived air samples from 2005.Levels of S-OPEs averaged ~500pg/m3 which is times higher than S-PBDEs.Levels were about the same in 2005 and 2011
18Sediment Monitoring Great Lakes Sediment Surviellance Program (GLSSP) U.S. EPA (Cooperative Agreement)Todd Nettesheim:University of Illinois at Chicago An LiEnvironment CanadaChris Marvin-Debbie Burniston, WQMSD - GLSSPGreat Lakes Restoration Initiative (GLRI) funded project to establish and implement a sediment surveillance program in the USDirected at monitoring legacy contaminants and screening for emerging chemicalsMethod development for screening of PPCPs, perfluorinated compounds, non-PBDE flame retardantsSampling 1 lake/year in accordance with CSMIThe mission of GLSSP is to investigate the presence of persistent, bioaccumulative and toxic (PBT) chemicals, and to reveal the spatial distribution and the temporal trend of PBT pollution in the Great Lakes through retrieving the sedimentary records. The PBT contaminants of emerging concerns (CECs) are the particular focus of GLSSP.Complementary to existing surveillance programs, GLSSP will provide information to support decision making with regard to pollution control and resource management for the Great Lakes.Environment CanadaTributary and sediment monitoring for contaminates.Set stations
19Preliminary GLSSP summary for Superior Spatial distribution based on surface sediment samples:Sites S022 (near Duluth) and S106 (east of Keweenaw Peninsula) stand out to have much higher concentrations than other sites for target legacy pollutants (PCDD/Fs, PCBs, PCNs, DDE).PBDEs are also higher at S022.PFCs may exhibit a different trend – lower concentrations at S022Other emerging pollutants have low concentrations in general.Time trend based on core samplesChronological resolution is limited by low sedimentation ratesResearch questionsHigher-than-expected concentrations of heavy (8-10 chlorines) PCBs were found and are yet to be confirmed.Site S008 may deserve further investigationElevated levels of soot carbon were foundPrevious work suggested PCB contamination at siteGLSSP key message addressing a Lake Superior information need – A core was collected in Duluth harbor and analyzed for hormones, BPA, NP, and OP. BPA was below or at detection limits throughout the core (less than 1 ug/kg). NP was also below detection limit throughout the core (less than 6 ug/kg). Thanks to An Li and her team for collecting the sample. And thanks to Sean Backus and EC for having the sample analyzed. CSMI in action.
20PFCA in Tributaries and Open Water Slides courtesy of Chris Marvin at Environment Canada
21Water MonitoringGreat Lakes Surveillance ProgramAlice DoveIndiana UniversityRon HitesMarta VenierPassive SamplingRainer Lohmann - University of Rhode IslandDerek Muir - Environment CanadaMercury Cycling and Bioaccumulation in the Great LakesDavid P. Krabbenhoft – USGSEnvironment Canada operates the base surveillance program for water in the Great Lakes. Recently, they have partnered with Indiana University for lower level analysis using resin column from POP Cart for lower level detection.The Great Lakes Surveillance Program is Environment Canada’s long term water quality monitoring program on the Great Lakes. They typically monitor each lake every second year, with one or two monitoring cruises conducted in that year. They have no routine monitoring on Lake Michigan but have collaborated with USEPA on organic contaminants monitoring as part of CSMI.The routine parameter list includes major ions, nutrients, some physical and biological indicators (e.g., chlorophyll a), and trace metals (including mercury). Organic contaminants are routinely monitored during the spring cruise of the CSMI year. They have also conducted some monitoring for compounds such as PFCs, BPA, in-use pesticides, pharmaceuticals and other compounds of emerging concern in recent years.
22Total mercury in Great Lakes Waters This map provides an example of a typical result for contaminants in the Great Lakes, indicating higher values in the lower Great Lakes compared to the upper lakes.
23Dissolved Lindane Trend Certain compounds (e.g. those with few current sources, that are subject to atmospheric transport and that do not volatilize readily from the water column back to the atmosphere) such as lindane are found at highest concentrations in Lake Superior. Note that lindane concentrations are low and trends are declining.
24PBDE Passive Sampling Results (June-Oct ’11) Air Water Ruge et al. pg/m37.60.0069pg/L5.60.056AirWaterVolatilizationSum PBDE concentrations are low - < 10 pg/m3 in the atmosphere, < 10 pg/L in the water. Atmospheric PBDEs driven by population density, with very low concentrations over the open Lake. In contrast, much smaller urban-remote gradient observed for dissolved concentrations of PBDEs. So much so that there might be net volatilization of PBDEs across open Lake Superior, while there is net deposition near the coasts.DepositionShippingPopulatedRuralOpen WaterRuge et al.
25OCP Passive Sampling Results (June-Oct ’11)AirWaterα-HCHα-HCHα-Endosulfanα-EndosulfanAir results in pg/m3 dominated by HCB and alpha-HCH. Range from pg/m3 HCB; bd-29 pg/m3 alpha-HCH.Water results in pg/L dominated by alpha-HCH and endosulfan sulfate. Range from pg/L HCB; pg/L alpha-HCH.HCB graph of flux rate in ng/m2/day representing dominant legacy exchange.Endosulfan I flux rate graph in ng/m2/day representing recently used and currently emitted OCP air-water exchange.Ruge et al.
26Thermocline/Deep chlorophyll layer OM rainmethylationSedimentationBottom watersEpilimnionThermocline/Deep chlorophyll layerSediments (top 20 cm)RunoffMeHg Annual Fluxes and Standing Pools – Lake MichiganWet Dep.Sed RefluxHypolimnion12 kg1-15%2 kg1-2%8 kg5-8%3 kg2-4%0.4 kg4-8%11,000 kg0.5%Collection locations for this work are those routinely visited during the Spring and Summer Lake Guardian cruises.Lake Michigan exampleInitial work by this project revealed that at most open water Great Lake sites there is a distinct accumulation of methylmercury at or just below the thermocline (THM) and deep chlorophyll (DCL) layers. The % methylmercury in these layers is maximal for the water column, which is strongly suggestive that these are sites of methylation (new MeHg production), as opposed to a site of methylmercury accumulation. Reasoning here is that you cannot preferentially accumulate methylmercury over inorganic mercury and thereby create the trends we see. Initial calculations for Lake Michigan suggest that this newly observed MeHg source is similar in magnitude to previous mass balance efforts that suggest tributaries were overwhelmingly the largest MeHg source. These observations are important because initial modeling efforts suggest the mercury source to the site of methylation in the water column is transport of recently deposited Hg from the atmosphere, thus the response time of this site of methylation to changes in mercury loading due to such regulatory actions as MATS or the recent UNEP Minamata Treaty should be very vast (one year).
27Linking Mercury Sources and Invasive Species in the Near-Shore Zone Trib’s: Hg, nut’s,WavesSeicheEstuaryOpen LakeRiver mouthQuagga/Cladophora assemblagesPoint-sources, AOCsHg Dep.Particle scavengingMeHg releaseRound gobyLake TroutmethylationOxygen supression; HABs, pathogen, & methylmercury productionA collaboration between USGS and the UW-MadisonThis is a new focus of USGS’s work currently. Conceptual diagram of the intersection of mercury sources (air, watershed, and historical point sources) and invasive species (quaqqa, round goby) in the near-shore environment - an important location for mercury cycling and food-web interactions and related to many other GLRI projects and in many cases historical (legacy) mercury use and accumulations. Rapid spread of the quagga throughout the GLs (except Superior) has resulted in a major shift in carbon and nutrient flows (near-shore shunt) and distribution (near-shore eutrophication, off-shore oligotrophication), which has a significant impact on mercury toxicity (methylation) and food web transfer. Proliferation of Cladophora mats has resulted in widespread accumulation of organic matter accumulation and subsequent oxygen suppression in many areas of the Great Lakes that did not exist previous to We have observed (as others have) that the Cladophora is a foraging ground for the Round Goby so we suspect that transfer of this MeHg source up the food web is already happening. We are looking at mercury cycling, methylation and food web transfer in this zone, and have revealed that it is a new site of MeHg production that appears to be very meaningful on the basin scale – next slide.
28Biota Monitoring Chemicals Management Plan Pam MartinRob LetcherGreat Lakes Herring Gull Monitoring Program (GLHGMP)Shane de SollaNOAA Mussel WatchKimani KimbroughEd Johnson Ed.Next, I want to move into biota monitoring. I have listed gull eggs and mussel monitoring program contact info here. I will not be discussing the NOAA Mussel Watch program much as there have been few zebra mussels found in the open waters of Lake Superior so far.Gull Eggprogram started in 1974 by collecting herring gull eggs from 15 colonies in the Great Lakes to monitor contaminants10-13 individual eggs (in spring) from all 15 GLHGMP sitesspatial and temporal trends have been monitored in the herring gull eggs for various environmental pollutants:– recently, emerging POPs and other compounds including various legacy and current-use flame retardants28
29Spatiotemporal (1990-2010) Trends of OPFRs in Herring Gull Egg Pools CMPSpatiotemporal ( ) Trends of OPFRs in Herring Gull Egg Pools3Photo: R. LetcherSpatiotemporal ( ) Trends of OPFRs in Herring Gull Egg Pools29
30CMP Twenty Years of Temporal Changes in 1002003004080120Agawa Rocks4002060Gull IsChannel-Shelter IsChantry Is19901995200020052010PFOS (ng/g ww)∑PFCA (ng/g ww)PFOS∑PFCAFighting Is600900Niagara R8001200Toronto HbrTwenty Years of Temporal Changes inPFOS and PFCAs in Herring Gull EggsL. SuperiorL. HuronL. MichiganL. ErieL. OntarioxNiagara RiverDetroit RiverTwenty Years of Temporal Changes in PFOS and PFCAs in Herring Gull Eggs30
31GLHGMPTemporal of PCBs and 2,3,7,8 TCDD in Herring Gull Egg Pools31
32NOAA Mussel Watch Program lMussel Watch siteslMussel Watch AOC sitesAOC sites ( 2009/2010)These locations have been sampled for a suite of indicators (mussels, sediment, benthos, sediment toxicity)The RED and BULE CIRCLES are “long-term” Mussel Watch sites – sites sampled before GLRI - many since 1992/93 and most with sufficient mussel data to assess temporal trends in chemical contamination. Sediment data also exists for these sites.Sites designated with STARS were newly established in (2009/2010). Mussel Watch has sites in all 30 AOCs. Have long term Mussel Watch at 5 of the AOCs.Sediment, chemicals in tissue, & bioeffects.No mussels identified in open waters of Lake Superior, YET.32
33Tributary Monitoring USGS GLRI Toxic Contaminant Monitoring in TributariesSteve Corsi
34Multi-tiered approach 59 total tributariesPassive samplers at all sitesSPMD, POCIS30 day exposuresPAHsOrganic Waste ContaminantsOrganochlorine PesticidesTotal PCBsPBDEsEstrogenicity (yeast estrogen screen)Water samples at 54 sitesOrganic Waste Contaminants, DOC, optical propertiesHydrologic and seasonal variability for 20 sites over two years1-6 samples for 34 sitesSediment samples at 15 sitesAOC focusSediment deposition: long-term exposurePCBs and Organochlorine pesticides
35PAHs in Water Samples for Intensive Monitoring Sites Concentration (µg/L)PAH results for 21 sites with 6-42 samples categorized by hydrologic condition. Events include rainfall and snowmelt runoff. Samples represent all seasonal periods.
36OWC ResultsOrganic Waste Contaminants for 21 sites with 6-42 samples for 15 classes of compounds. Mean values indicated by color and frequency of detection indicated by diameter of bubble.
37Coordination CSMI included in RFA requests – US Binational Monitoring meetingsJoint publications / reportingPeer ReviewRegular communicationIn conclusion, I want to emphasize the continued coordination and collaboration that these chemical monitoring programs employee. These connections are essential to the life of these programs, especially in the tight financial climate that they are operating in.
38Future Direction Surveillance Benchmark identification Degradation productsEstablishing linksEnvironment and humanFood web changes and contaminant levelsI also want to highlight the future direction of many of these programs…
39Contributors Mahiba Shoeib – EC Tom Holsen – Clarkson U. Alice Dove – ECVi Richardson – ECRainer Lohmann – URIDerek Muir – ECHayley Hung – ECRob Letcher - ECPam Martain - ECShane DeSolla – ECDavid Krabbenhoft – USGSSteve Corsi – USGSDavid Gay – ISWSTom Holsen – Clarkson U.Bernard Crimmins – Clarkson U.Philip Hopke – Clarkson U.James Pagano – SUNY OswegoMichael Milligan – SUNY FredoniaSean Backus - ECDaryl McGoldrick – ECSatyendra Bhavsar – OMOETodd Nettesheim – EPALiisa Jantunen – ECChris Marvin – ECKimani Kimbrough – NOAAEd Johnson - NOAAA special thanks to the many many contributors who provided the material for this presentation.
40Questions? Beth Murphy US EPA Great Lakes National Program Office Murphy.Elizabeth@epa.gov