JohnBartos_Bio

Quote To Live By: “Torture the data, and it will confess to anything” ―Ronald Coase

EXPERTISE

  • Hydrogeological Engineer supporting and managing both site characterization and remediation project teams
  • Environmental site assessments and remedial design investigations
  • Physical Hydrogeology
  • NAPL Conceptual Site Models Development
  • Analytical and numerical transport modelling of metals, LNAPLs, and DNAPLs
  • Risk Based Corrective Action (RBCA) risk assessments
  • Finger printing and natural attenuation analysis of NAPLs and metals
  • High Resolution Site Characterization
  • Remediation system effectiveness
  • Geophysical data evaluation
  • Geotechnical Evaluation.

  • Full Profile

    With 15 years of experience as a hydrogeological engineer, John Bartos brings a diverse set of geological and engineering skills to EHS Support’s team. He specializes in technically complex sites using high-resolution site characterization and provides a diverse skill set in Conceptual Site Model formulation. His detail oriented mindset and meticulous attention to detail lead to more directed remediation and shortened timeframe for closure, reducing long-term costs for clients.

    John has worked on projects for a myriad of clients from Fortune 100 industrial, , pipeline, and mining companies, governmental entities, litigation support for attorneys, , as well as petroleum and water supply clients. John has experience with physical hydrogeology (aquifer test and slug test analysis), numerical modeling, chemical hydrogeology (fate and transport of a multitude of inorganic and organic chemicals), geochemical evaluations, statistics, fracture trace analysis, geotechnical evaluations, integrating geophysical data, and risk assessments from working on projects across the United States and Canada. He also has significant field work experience drilling using complex drilling techniques, installing various well types (horizontal, CMTs, FLuTEs, and Westbay wells), geophysical surveys (surface and downhole), groundwater sampling (low flow to packer testing), remediation system installations, and well rehabilitations.

    EDUCATION

    • Currently PhD candidate, Geosciences, Virginia Polytechnic Institute and State University
    • MA, Geology, Syracuse University
    • BS, Geological Engineering, Montana Tech of the University of Montana.

    CERTIFICATIONS AND TRAINING

    • Professional Geologist: Alabama (No. 1260); Georgia (No. PG001784); Florida (No. PG2612); Mississippi (No. 0792)
    • Professional Engineer: Alabama (No. 31156)
    • OSHA 40-hour HAZWOPER 29-CFR 1910.120 Certified, Current
    • OSHA 8-hour HAZWOPER Supervisor 29-CFR 1910.120 Certified
    • OSHA Construction Safety Course
    • Loss Prevention System (LPS)
    • Natural Attenuation of Metals in Groundwater (NGWA)
    • Isotopes in Hydrogeology (GSA)
    • Bachelor of Science, Biology, Mary Washington College.

    KEY EXPERIENCE

    Groundwater Flow and Transport Numerical Modeling Experience

    Shaler-Etna PCE Site (Pittsburgh, PA)
    Fate And Transport Modeler

    As part of a Corrective Action program’s site investigation for the Pennsylvania Department of Environmental Protection (DEP), provided technical support in the better understanding of a tetrachloroethylene (PCE) and trichloroethylene (TCE) dissolved groundwater plume in a glacial outwash sand aquifer near Pittsburgh, PA.  This technical support consisted of executing a groundwater flow model, data analysis of an aquifer test, and assisting in the construction of a CSM.  Prepared portions of the report and findings of the model that was provided to both the municipality and the Pennsylvania DEP.

    Assisted in the technical setup and performed the analysis of 22 slug tests to ascertain the hydraulic conductivity.  Due to the transitory nature of the groundwater, the groundwater measurements were corrected for the diurnal changes (tidal) in the major river nearby.  Also, the sand aquifer was highly transmissive so special modeling was used due to the oscillations caused by the testing.

    Assisted in the technical setup and work plan for a long-term aquifer test in the glacial outwash sand aquifer.  Evaluated and corrected the groundwater elevations from the transducer data from the aquifer test for diurnal changes in the major river nearby.  This processed data was used to ascertain the hydraulic properties of the aquifer in the center of the plume.

    Conducted a geochemical analysis of the groundwater to “fingerprint” the chlorinated groundwater solvent plume using major ions and molar ratios.  Using stiff diagrams, the analysis from the major ions showed three distinct types of groundwater in the sand aquifer and the molar ratios showed two distinct sources for the chlorinated solvent plumes.

    Prepared and executed a groundwater flow model using MODFLOW and MODPATH to determine the pumping effects of a large-scale municipal water supply well field on a nearby PCE and TCE dissolved groundwater plume.  The model was significantly influenced by the transient nature of a large river near the well field on the glacial outwash sand and was able to model 17-days of different supply wells pumping schedule and the diurnal changes of the river.  Using the model, particle tracks using the MODPATH package was able provide a remedial action design to provide the pumping rates of each water supply well to limit the transport of the chlorinated solvents into each well and the optimal location and pumping rate of an “interceptor well” to protect the well field.

    Active Oil Terminal (St. Croix Island, U.S. Virgin Islands)
    Groundwater Modeler

    Using and maintaining a regional-scale groundwater flow model that is used to ascertain the effectiveness of a 135 well pump and treat system in a karstic limestone aquifer.  This model assists on evaluating the effects of different configurations and pumping rates for individual wells.

    Active Manufacturing Facility (Raleigh, NC)
    Fate and Transport Modeler

    As part of an application to North Carolina DENR’s program for risk-based remediation, prepared and executed a groundwater flow model in MODFLOW and a fate and transport model in RT3D and MT3D in support of a brownfield application in the State of North Carolina for a large industrial plant found in the Piedmont.  The model was to ascertain the 1,1-Dichloroethene (1,1-DCA), TCE, cis- 1,2-Dichloroethylene, and 1,4-Dioxane groundwater concentrations at the property boundary.  The model also was used to determine the effects of natural attenuation on the source areas and the predicted groundwater concentrations for each constituent at the property boundary in the future.

    USEPA Pilot Study (Butte, MT)
    Fate And Transport Modeler

    Prepared and executed a groundwater flow model in MODFLOW and a fate and transport model in PHT3D of groundwater flow into a constructed wetlands to address acid-mine drainage problems in a mountain stream.  The model was able to determine the groundwater residence time that was needed in the wetlands to address the low pH, high arsenic groundwater to protect local fisheries.

    Closed Dry Cleaning Facility (Bozeman, MT)
    Fate and Transport Modeler

    Working for the Montana Department of Environmental Quality (MDEQ), prepared and executed a groundwater flow model in MODFLOW and a fate and transport model in MT3DMS of groundwater flow of a dissolved PCE and TCE groundwater plume from a decades long release from a dry cleaning facility.  The model was complex due to the heterogeneous geology of an alluvial fan and the seasonal changes in the groundwater direction.  The model was able to account for these complexities and was able to determine the timing, location, and the amount of impact on the Gallatin River.  The findings of both the groundwater flow and fate and transport models were then presented to the county government, the State of Montana, and Montana State University.

    Environmental Work Experience

    Closed Manufacturing Facility (Lewiston, ME) – Remedial Investigation
    Primary Technical Support

    Primary technical support to the GES and client project team for a site impacted by numerous types of chlorinated solvents into a drain field in a glacial fluvial aquifer.

    Conducted and field managed a “triad” high resolution investigation in three different source areas to determine the amount of mass present.  The investigation was able to reduce the “areas impacted” footprint by up to 75%.

    Prepared and managed a study to quantify the water flow between the surface water of a small brook, the groundwater, the groundwater entering the area, the porewater in the hyporheic zone (sediments), and the wetlands.  By using simple tools like mini-piezometers, seepage meters, and tracers (heat and total dissolved solids), the study was able to quantify the mass flux of the chlorinated VOCs into the wetlands and brook.  Planned and performed an analysis of data of a long-term aquifer test that included influences from lunar tides and possible connection to other aquifers.

    Construction of a CSM for the contaminant transport pathways of the chlorinated solvents, analysis of the effectiveness of the current pump and treat system, and detailed analysis of historical analytical data for future phases of needed delineation.  Prepared portions of multiple reports that were provided to the Maine DEP and a Fortune 50 client.

    Based on the results of the reports, the client was able to cease operation of their pump and treat system used for contaminant that allowed for the savings of $40K per year due to the approval of a natural attenuation remedial alternative for the chlorinated solvents.

    Closed Manufacturing Facility (Muscle Shoals, AL) – Remedial Investigation
    Project Manager and Primary Technical Support

    Five year project at a former casting-plant impacted by both chlorinated solvents and PCBs in a karstic limestone geological setting in Northern Alabama.

    Managed, field-supervised and conducted a $3M remedial investigation of soil and groundwater under Alabama’s (risk-based) Voluntary Cleanup Program.  Provided weekly documentation and conducted semi-annual presentations of the progress and findings to stakeholders.  Managed and conducted a surface geophysical investigation and well logging using downhole geophysical methods that included televiewers, lithology logs, and flowmeters to collect information about casing integrity, structural geology, and groundwater flow.  Managed, conducted, and sited sample locations and performed sampling to delineate contamination for three field crews for over four months.  Managed and prepared a detailed report for Alabama DEM, county government, and a Fortune 100 company client.

    Prepared and managed four annual effectiveness reports documenting the activities and progress of the pump and treat remediation system being utilized to mitigate the potential of migration of contaminated groundwater leaving the facility.

    Constructed GIS and database system for all site environmental data like groundwater elevations and analytical laboratory data for use by both the client and other stakeholders.

    Managed, field-supervised, and conducted a $100K well rehabilitation of pump and treat wells to optimize the well capacity using physical and chemical treatments.  Each well was then subsequently tested and determined the effectiveness of the treatment.  Two wells were identified to be damaged so they were replaced and tested with summa-soil screens.

    Conducted a remedial evaluation on the effectiveness of a long-term injection of molasses into the fractured karstic limestone and provided a remedial design on steps on how to improve the remediation system.

    Conducted a three-week file review of environmental records to attain geological and contamination information from nearby industrial facilities.  New information was then incorporated into the GIS and databases for litigation support.

    Managed, supervised, and conducted in the implementation of a pilot-study groundwater remediation system involving the use of the Auburn University’s experimental Palladium-covered Nano-Iron for the in-situ attenuation of PCBs and PCE in the groundwater.  Supervised in the receipt of a conditionary underground injection permit and follow up reporting to the Alabama DEM.

    Closed Manufacturing Facility (Lancaster, PA) – Remedial Investigation
    Technical Support

    Provided technical oversight and direction of a TCE contamination in karstic limestone.  Provided a CSM for both the geological/fracture network and the contaminant transport of the dissolved phase plume.  Evaluated the pump and treat system for effectiveness.

    Brownfield Regulated Dry Cleaner Facility (Lyndhurst, OH) – Remedial Investigation
    Technical Support

    The project was conducted as part of a brownfield program from a dry cleaner facility to commercial properties.  In support of this program, two types of calculations were provided to support the closure of the site.  Provided fate and transport calculations for the extent of the chlorinated solvent PCE plume in fractured rock.  Using the program BIOCHLOR, the reductive dechlorination daughter products were also modeled.  The second type of calculations were Johnson and Ettinger vapor risk calculations to determine if the dissolved phase chlorinated solvent plume was impacting neighboring commercial buildings.

    RCRA-Regulated Active Glass-Manufacturing Site in Karst Topography (Nashville, TN) – Remedial Investigation
    Primary Technical Support

    The industrial processes of the plant have impacted groundwater with chlorinated volatile organic compounds like TCE.  Managed, field supervised, and conducted a $500K remedial investigation of groundwater within sand-filled cells and the underlying limestone.  Managed and conducted a surface geophysical investigation, sited locations, prepared work plan for the subsequent bedrock groundwater characterization, sampled borings and monitoring wells, conducted aquifer testing and downhole geophysics including flowmeter testing, and conducted a geochemical evaluation of major ions and stable isotopes of oxygen and hydrogen to “fingerprint” the origin of groundwater in each well, and prepared reports.  Prepared a RCRA Remedial Investigation Report to the Tennessee DEC, Davidson County, and a Fortune 100 client.

    Coal-Tar-Impacted RCRA-Regulated Manufacturing Facility (Birmingham, AL) – Bedrock Groundwater Investigation
    Primary Technical Support

    Supervised and managed installation of and logged four cored-bedrock wells, conducted downhole geophysical logging that included televiewers, lithology logs, and flowmeters, conducted packer testing for groundwater samples from identified water-bearing fractures from the geophysical investigation, oversaw installation of continuous monitoring tubing for sample collection, and prepared reports.  Supervised the installation of 200-foot continuous monitoring tubing (CMT) wells and traditional bedrock PVC monitoring wells.  At the time of the installation, the CMT wells were the deepest in the world for a record of two years.  Wrote the RCRA Investigation characterization report and producing the cross-sections, GIS-produced figures, and geochemical investigation.

    RCRA-Regulated National Aeronautics and Space Administration Manufacturing Site (New Orleans, LA) – Characterization and Remediation
    Project Manager and Primary Technical Support

    Characterization and remediation for the Michoud Assembly Facility.  The site is impacted with chlorinated solvent (PCE, TCE, and Carbon Tetrachloride, and Freon-113), petroleum hydrocarbons, and metals (Chromium-6, Arsenic, and Barium) in a tidal setting in the St. Bernard fan deposits and New Orleans Beach Sand Deposit.

    Managed, field supervised, and conducted a Phase II investigation for any impacts of historical petroleum hydrocarbons impact under two former Above Ground Storage Tanks that was part of a brownfield project.  With using the State of Louisiana’s risk based characterization under the Risk Evaluation/Corrective Action Program (RECAP), NASA was able to proceed with their building project without any delays from the contamination of petroleum hydrocarbons within the proposed building footprint.  With less than one month between acceptance of the Work Plan and approval of the Phase II report by the Louisiana DEQ, NASA headquarters gave the team the “Public Service Achievement Award” for expediting the investigation.

    Managed, field supervised, and conducted a pre-feasibility investigation to delineate and estimate the total amount of mass of TCE non-aqueous phase liquid (TCE NAPL) that was used for an in-situ thermal desorption pilot study.  The data collected was used in the design of the system and all results were reported to the Louisiana DEQ.

    Managed and assisted in the design of an in-situ thermal desorption pilot study for ½ acre area in the destruction of TCE NAPL.  The pilot study removed 80 lbs of TCE over 125 days period.

    Constructed and managed GIS and database system for all site environmental data like groundwater elevations and analytical laboratory data for use by both the client and other stakeholders.

    Conducted a remedial evaluation on the effectiveness of a pump and treat system that included the removal of the current pumping well and designed a pumping well to withstand the salinity and impacts from TCE NAPL.  Managed and conducted the installation and testing of the area of influence of the new well.  This well has doubled the life expectancy of the previous four other wells that were installed and is running to date.

    Prepared eight work plans for RCRA program using Louisiana’s RECAP risk assessment guidelines and TSCA work plans for PCB site characterization.

    U.S. Coast Guard Facility (Pensacola, FL) – Remedial Investigation
    Project Manager

    Conducted and managed an investigation and risk assessment at an active military installation to ascertain the impacts of petroleum hydrocarbon release to soils, groundwater, and the Gulf of Mexico.  The investigation determined the location of an unknown underground storage tank and managed the removal.  The risk assessment determined no risk to either human health or to the environment and was reported to both the U.S. Coast Guard Civil Engineering Unit and the Florida DEP.

    Active Lumber Facility (Bunnell, FL) – Phase II Investigation
    Technical Support

    Conducted an investigation in determining the extent of contamination at an active lumber facility.  The investigation consisted of soil and groundwater sampling around numerous buildings and pads to determine the extent of pentachlorophenol, dioxins, and arsenic.  In addition, sediment sampling also occurred by boat in the nearby wetlands and swamps.

    Pipeline Booster Station (Gaffney, SC) – Remedial Activities
    Technical Support

    Conducted and managed a site investigation and characterization of a BTEX contaminated site in the fracture-flow dominated Piedmont.  For the site characterization, a lineament analysis, oversight of a groundwater flow and fate and transport models, wetland delineation and preparation and design of an environmental database and GIS were done.  Using the information collected from the site characterization, prepared an engineering design report and underground injection permit to implement an air sparge system and constructed wetlands for remediating the site.  Supervised the installation of 16 sparge points and three monitoring wells by using air rotary drilling techniques for the remediation system.  Prepared the annual groundwater and surface water monitoring report for submission to the South Carolina DEC.  One year after the installation of the air sparge system, designed and installed a soil vapor extraction (SVE) system.

    Active Manufacturing Plant (Cullman, AL) – Phase II Investigation
    Technical Support

    Served as technical support for a RCRA Remedial Investigation.  Managed, field supervised, and conducted a $250K remedial investigation to delineate TCE NAPL mass and groundwater impacts within the underlying fractured sandstone of the Pottsville Formation.  Managed and conducted a surface geophysical investigation (resistivity, induced polarization, and EM), fracture trace analysis, sited locations, prepared work plan for the subsequent bedrock groundwater characterization, sampled borings and monitoring wells, conducted aquifer testing and downhole geophysics including flowmeter testing, and conducted a geochemical evaluation of major ions and NAPL analysis to “fingerprint” the origin of groundwater and NAPL in wells, and prepared reports.  Prepared a RCRA Remedial Investigation Report to the Alabama DEM, Cullman County, and a Fortune 100 client.

    CERCLA site (Brunswick, GA) – Remedial Investigation
    Technical Support

    Served as technical support for the characterization and remediation for a former caustic brine and mercury contaminated site along the coastal plain of Georgia.  The various tasks were part of a Remedial Investigation that was submitted to the USEPA, Georgia DEP, US Agency for Toxic Substance and Disease Registry (ASTDR), and community stakeholders.

    Conducted and managed a 42-hour pump test to determine the hydraulic connection between different sedimentary units.  Due to tidal and barometric changes along the Atlantic Ocean, six different HERMIT units with multiple pressure transducers were used.  Processed and analyzed the hydraulic data and was corrected for the changes.

    Provided a geochemical analysis of the natural attenuation of an alkaline (ph>11) brine pool.  The brine pool was caused by the repeated discharges of sodium chloride and sodium hydroxide that caused the leaching of heavy metals from the aquifer matrix.  The analysis included a natural attenuation of the brine was occurring which the heavy metals are precipitating out with time.

    Served as site engineer that supervised the installation of one of the longest horizontal wells used as a monitoring system in the world.  The well is over a half mile long and had a dozen multiple sampling ports.

    Regulated Landfill (Springdale, AK) Phase II Investigation
    Technical Support

    Conducted and managed a geochemical analysis of water collected from various parts of a multi-cell landfill in which a portion of one of the landfills failed.  The geochemical analysis of the leachate from various cells, groundwater samples, and surface water was able to identify which cell was impacting the groundwater.  The geochemical analysis consisted of using stable isotopes (oxygen, carbon, and hydrogen), major ions, and tritium.

    USEPA Funded Project (Butte, MT)
    Technical Support

    Part of an interdisciplinary team to determine the possible causes of basement flooding in a subdivision that was funded by the U.S. Environmental Protection Agency.  Supervised and conducted the installation of 15 observation wells, 25 piezometers, 4- 24 hour pump test, sampling of both surface water and groundwater, geotechnical analysis of soils, and differential level survey.  Constructed a groundwater model to successfully show the interaction between groundwater, nearby streams, wetlands and a barrier.  Conducted a geochemical analysis to show no influence from nearby acid mine drainage (AMD) impacted mines.  Assisted on preparing the final document and presenting the findings to two public meetings.

    Closed Manufacturing Facility (Lewiston, ME) – Groundwater-Surface Water Investigation
    Technical Support

    The industrial processes of the plant impacted soil, groundwater, and stream sediments with chlorinated volatile organic compounds (VOCs).  Prepared and managed a study to quantify the water flow between the surface water of a small brook, the groundwater, the groundwater entering the area, the porewater in the hyporheic zone (sediments), and the wetlands.  By using simple tools like mini-piezometers, seepage meters, and tracers (heat and total dissolved solids), the study was able to quantify the mass flux of the chlorinated VOCs into the wetlands and brook.

    Major Bottled-Water Company (Benton, TN) – Water Supply Project
    Primary Technical Support

    Conducted and managed an investigation to determine the influence of large water-supply wells in a karst limestone on both wetlands and streams.  The investigation focused on limiting the bacterial contamination from the surface water getting into the groundwater wells.  Long-term pumping test were utilized while monitoring the hydraulic heads in the surface water, wetlands, and nearby wells and changes in geochemistry and bacteria in the pumping wells.  The study was able to determine the optimal pumping rates of the water supply wells to limit bacterial contamination from the surface water and wetlands.

    Major Pipeline Company (Northern South Carolina) – Wetland Delineation
    Technical Support

    Assisted in the literature record collecting and field delineation of wetlands at two petroleum booster stations that was reported to both the Army Corps of Engineers and South Carolina DHEC.  After the wetlands were delineated, soil and surface water samples were collected to ascertain if a dissolved petroleum hydrocarbon groundwater plume was impacting the wetlands.

    NASA Facility (New Orleans, LA) – Remedial Investigation
    Technical Support

    Managed and reported an investigation to ascertain the extent of chlorinated VOCs impacting wetlands behind levees at a NASA facility.  Using statistical methods of sampling for two miles of wetlands, the extent of the contamination was determined.  A toxicological risk assessment was conducted and there was no risk to the environment from the current levels of contamination.

    City of New York (New York City) – Wetland Study
    Technical Support

    Collected and helped document the impact of nitrate and phosphors sources on the “Croton lakes” and wetlands that provide 20% of the water to New York City.  As working as a USGS field technician, assisted in the collection of numerous surface water samples of lakes and wetlands.  Responsible for the geochemical evaluation of metals and fingerprinting of the different surface water coming into each of the individual lakes.

    Water Supply Experience

    Bottled Water Company (Cleveland, TN)
    Primary Technical Support

    Managed and conducted on the exploration and installation of numerous public supply wells in Blue Ridge province of Tennessee for one of the largest bottled water companies in the U.S.  Conducted geologic mapping, spring reconnaissance, and well survey of the area.  Supervised the drilling and geologic logging of multiples exploration borehole down to 600 feet by using air rotary, dual-tube reverse circulation, ODEX, and barber drilling methods and the subsequent down hole geophysical logging and pump tests.  Installed million dollar stainless steel well construction material in the borehole.  Evaluated geochemical connection between the borehole and surrounding springs.  Prepared a reports to the Tennessee DEC, Polk County, U.S. Department of Agriculture, and a Fortune 100 client.

    Military Munitions Response Program Experience

    U.S. Army Corps of Engineers’ Formerly Used Defense Site (FUDS) Site Inspection (SI) program (Nationwide)
    Team Member

    The program is designed for the identification of residual risk posed by potentially remaining munitions.  Responsibilities include conducting field support for site inspections and preparation of reports and presentations for the regulatory agencies and stakeholders.  Responsible for over 40 sites in the preparation of TTP memos, work plans, and site investigation reports.

    ESTCP Geophysical Discrimination Demonstration Study (Former Camp Sibert in Gadsden, AL)
    Team Member

    Responsibilities included coordinating and supporting intrusive operations of UXO teams, maintaining geophysical and GPS equipment, tracking and cataloging of munitions debris and cultural scrap, and providing daily dig sheets and database for management.  The assignment was for 6 months.

    Investigation for the Phase III Conventional MEC Engineering Evaluation / Cost Analysis (EE/CA) Investigation (Former Camp Sibert in Gadsden, AL)
    Team Member

    Responsibilities included coordinating and supporting intrusive operations of UXO teams, maintaining geophysical and GPS equipment, tracking and cataloging of munitions debris and cultural scrap, and providing dig sheets and database for management.  Performed surface soil sampling, collection of rights-of entry, and coordinated reconnaissance team.  The assignment was for 1 year.

    Investigation for the Site 8 Chemical Warfare Munitions Removal Action (Former Camp Sibert in Gadsden, AL)
    Team Member

    Responsibilities included maintaining geophysical and GPS equipment, tracking and cataloging of munitions debris and cultural scrap, and providing dig sheets and database for management, collection of electromagnetic data with Geonics EM61, and coordinating collection and shipment of soil sampling.  The assignment was for 6 months.

    PUBLICATIONS AND PRESENTATIONS

    Bartos, J., Davis, R., Carr, B., Mellor, C., 2005, Lessons from Northern Alabama: Multi-Technique Geophysical Investigation Characterizing the Bedrock and Fracture Network: 2005 Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP).

    Bartos, J., Siegel, D., 2001, Migration of North American Sedimentary Brines and their subsequent dilution by Pleistocene age water.: A Synthesis of Conservative Solutes and Stable Isotopes of Water: Geological Society of America Abstracts, v. 33, p. A207.

    Siegel, D., Otz, M., Otz, I., McKenzie, J., Hassett, J., Bartos, J., Tedorov, S., Flusche, M., Lesniak, K., Tasillo, T., Cuomo, D., 2001, Why are the Wetland and Surface Waters Sometimes Colored in the Croton Watershed (New York)? 2001 American Geophysical Union Spring Meeting.

    Bartos, J., Siegel, D., and Noll, R., 2000, Evidence for Dedolomitization Caused by Pleistocene Glacial Meltwater in a Fractured Dolomite: Geological Society of America Abstracts, v. 32, p. A-372.

    Lemon, G., Townsend, P., and Bartos, J., 1999, Hydrogeological Investigation of Basement Flooding in the Gallatin Subdivision, Butte, MT: Environmental Protection Agency Document (Funding provided by Montana Department of Environmental Quality) (unpublished).

    Bartos, J., 1998, The Wyoming Craton in the Southwest United States-East Antarctica Theory (SWEAT): Geological Society of America Abstracts, vol. 30, pg. A-72.

    Somani, S., Bartos, J., Michetti, J., and Micozzi, M., 1998, Remediation of the Steward Mine Well System, Butte, MT: Environmental Protection Agency document (unpublished).