SamParker_Bio

Quote To Live By: “Climb the mountains and get their good tidings.”-John Muir

EXPERTISE:

  • Contaminated Sediment Assessment
  • Sediment and Water Quality Studies
  • Hydrologic Monitoring and Assessment
  • Remote Sensing and Geographic
  • Information Systems
  • Multivariate and Geospatial Statistics.

  • Full Profile

    Samuel Parker is an ecologist with over ten years of experience working on a variety of sediment and surface water issues. His work focuses on ecological risk assessment of contaminated sites regulated under CERCLA, RCRA, state voluntary programs, and the Australian and New Zealand regulatory frameworks. In addition, Sam has a wealth of experience designing and implementing large, complex sediment, surface water, and pore water quality monitoring programs to target a variety of contaminants. Using multivariate and geostatistical analysis methods, Sam strives to incorporate a mechanistic understanding of ecosystem process into effective risk-based decision making. He has developed novel approaches using remote sensing, high-resolution GPS, and geographic information systems as well as ground-based thermal infrared (TIR) imaging tools to improve assessment techniques of sediments for use in the development of Natural Resource Damage Assessments (NRDA), Screening Level Ecological Risk Assessments (SLERA), and Baseline Ecological Risk Assessment (BERA) programs.

    EDUCATION

    • Ph.D. Natural Resources, University of Vermont, 2018
    • B.S. Environmental Sciences (Water Resources Focus), University of Vermont, 2009

    PROFESSIONAL AFFILIATIONS

    • Ecological Society of America

    KEY EXPERIENCE

    Former Smelting Facility, Victoria, Australia
    Technical Lead

    Project includes the evaluation of ecological risks to sediment, soil, surface water, and pore water associated with former smelting operations at a several hundred hectare facility in coastal Victoria. Developed suitable ecological screening criteria according to National Environment Protection Measure guidance (NEPC, 2013) and the Australian and New Zealand Guidelines for Fresh and Marine Water Quality (ANZECC/ARMCANZ, 2000 & 2013). Designed and implemented field studies to assess risks across matrices.

    Former Paint Manufacturing Facility, New Jersey, USA
    Technical Lead

    Developed and implemented a multi-phased approach, which included ground-based TIR imaging, to assess potential groundwater discharges to surface waters in areas with suspected nexus to upgradient sources. This information was used to reinforce conceptual site understanding and facilitate data collection as part of an on-going BERA.

    Former Landfill Site, Virginia, USA
    Technical Lead

    Project included the implementation of multi-phased approach to assess potential groundwater discharges to surface waters where complete migration pathways were suspected associated with volatile organic compounds present in underlying bedrock geologic formations. TIR imaging and other lines of evidence were used to identify areas with the greatest potential for groundwater discharge to surface water. This information was used to select sampling locations for sediment and surface water evaluation as part of a SLERA.

    Former Landfill Site, New York, USA
    Technical Lead

    Implemented a variety of multi-variate statistical approaches, which, in combination with conceptual site model understanding, were used to discern the chemical fingerprint of polychlorinated biphenyl (PCB) congeners between source areas and nearby water bodies. Environmental forensic approach demonstrated differing signatures associated with other, upgradient sources.

    Explosives Manufacturing Facility, Connecticut, USA
    Technical Support

    Implemented a variety of multi-variate statistical approaches to discern the chemical fingerprint of polycyclic aromatic hydrocarbons (PAHs) between potential source areas and nearby water bodies. Also developed a framework to evaluate changes to interstitial water PAH toxic units using empirical and equilibrium partitioning derived approaches to reduce analytical scope associated with future assessments.

    Former Chemical Manufacturing Site, New Jersey, USA
    Technical Support

    Project included the evaluation of monitored natural recovery (MNR) of chlorinated solvents associated with groundwater impacts to a downgradient surface waters. Conducted statistical evaluation demonstrating significant declines in constituent concentration with time, providing additional evidence of the efficacy of the MNA remedy. Evaluation supported ongoing Screening Level Ecological Risk Assessment (SLERA) of receiving environment.

    PUBLICATIONS

    Parker, S. P., W. B. Bowden, M. B. Flinn, C. D. Giles, K. A. Arndt, J. P. Benes, and D. G. Jent. 2018. Effect of particle size and heterogeneity on sediment biofilm metabolism and nutrient uptake scaled using two approaches. Ecosphere 9(3):e02137. doi: 10.1002/ecs2.2137

    Parker, S.P. W.B. Bowden, M.B. Flinn. In preparation. The effect of acid concentration and post-acidification read time on the calculation of chlorophyll a in ethanol-extracts of aquatic periphyton. Limnol. Oceanogr. Methods, 14: 839-852. doi: 10.1002/lom3.10130

    Song, C., W. K. Dodds, J. Rüegg, A. Argerich, C. L. Baker, W. B. Bowden, M. M. Douglas, K. J. Farrell, M. B. Flinn, E. A. Garcia, A. M. Helton, T. K. Harms, S. Jia, J. B. Jones, L. E. Koenig, J. S. Kominoski, W. H. McDowell, D. McMaster, S. P. Parker, A. D. Rosemond, C. M. Ruffing, K. R. Sheehan, M. T. Trentman, M. R. Whiles, W. M. Wollheim, and F. Ballantyne. 2018. Continental-scale decrease in net primary productivity in streams due to climate warming. Nature Geoscience 11:415-420.

    Rüegg, J., W.K. Dodds, M.D. Daniels, C.L. Baker, W.B. Bowden, K.J. Farrell, M.B. Flinn, T.K. Harms, J.B. Jones, L.E. Koenig, J.S. Kominoski, W.H. McDowell, S.P. Parker, A.D. Rosemond, K.R. Sheehan, M.T. Trentman, M.R. Whiles and W.M. Wollheim. 2015 Baseflow physical stream characteristics differ at multiple spatial scales in stream networks across diverse biomes. Landscape Ecol (2016) 31: 119. doi: 10.1007/s10980-015-0289-y

    Fitzgerald, E.P., W.B. Bowden, S.P. Parker, M.L. Kline. 2012. Urban impacts on streams are scale-dependent with nonlinear influences on their physical and biotic recovery in Vermont, United States. JAWRA Journal of the American Water Resources Association, 48: 679-697. doi: 10.1111/j.1752-1688.2012.00639.

    PRESENTATIONS

    Parker, S.P.. 2018. Thermal infrared (TIR) imaging surveys to identify groundwater to sediment to surface water discharge pathways. October 2018 Sediment and PRP Summit. Hoboken, NJ. (Oral Presentation)

    Parker, S.P., W.B. Bowden, M.B. Flinn. K.A. Arndt, J.P. Beneš, C.D. Giles, and D.G. Jent. 2015. The effect of sediment particle size on benthic ammonium and phosphate uptake rates in high-latitude streams. 2015 Society for Freshwater Science Annual Meeting. Milwaukee, WI. (Oral Presentation)

    Jent, D.G., M.B. Flinn, S.P. Parker. 2015. Scaling species richness of invertebrate communities in an Arctic watershed using rarefaction 2015 Society for Freshwater Science Annual Meeting. Milwaukee, WI. (Poster)

    Parker, S.P., W.B. Bowden, M.B. Flinn. 2015. Influences of Solvent Type, Acid Strength, and Post-Acidification Read Time on the Calculation of Chlorophyll a in Aquatic Samples. 2015 Society for Freshwater Science Annual Meeting. Milwaukee, WI. (Poster)

    Rüegg, J., W.K. Dodds, M.D. Daniels, C.L. Baker, W.B. Bowden, K.J. Farrell, M.B. Flinn, T.K. Harms, J.B. Jones, L.E. Koenig, J.S. Kominoski, W.H. McDowell, S.P. Parker, A.D. Rosemond, K.R. Sheehan, M.T. Trentman, M.R. Whiles and W.M. Wollheim. 2015 Baseflow patterns of geomorphic heterogeneity in stream networks across biomes. 2015 Society for Freshwater Science Annual Meeting. Milwaukee, WI. (Oral Presentation)

    Parker, S.P., W.B. Bowden, M.B. Flinn. 2014. The effects of hydrology and land cover characteristics on nutrient concentrations in a heterogeneous watershed. 2014 Joint Aquatic Sciences Meeting. Portland, OR. (Poster)

    Parker, S.P., W.B. Bowden, M.B. Flinn. 2014. Can object-based classifications of catchment characteristics be used to evaluate nutrient loading in arctic streams. 2014 Arctic LTER Winter Meeting. Woods Hole, MA. (Poster)

    Parker, S.P., W.B. Bowden, M.B. Flinn. 2013. The effect of land cover on water chemistry in a heterogeneous watershed. 2013 Arctic LTER Winter Meeting. Woods Hole, MA. (Poster)

    Parker, S.P., W. Bowden, E. Fitzgerald. 2007. The effect stream geomorphic variability on macroinvertebrate communities in Northwestern Vermont. 2007 URECA Research Symposium. Burlington, Vermont. (Poster)