SENIOR ASSOCIATE
ERM-Southwest
Houston, Texas
Telephone: (713) 579-8999
Fax: (713) 579-8988
e-mail: ermsw@electro.tex.com (Gary Donnan)
SENIOR ASSOCIATE
ERM-Southwest
Houston, Texas
Telephone: (713) 579-8999
Fax: (713) 579-8988
e-mail: ermsw@electro.tex.com (Gary Donnan)
EDUCATION:
B.S. Geology - University of Texas at Austin (1984)
M.S. Geology - New Mexico State University (1987)
REGISTRATIONS:
Professional Geologist in the State of Tennessee
INDUSTRIAL EXPERIENCE AND ACTIVITES:
Project manager/hydrogeologist for hydrogeologic investigations of RCRA and Superfund sites, sites involving due diligence assessments, and sites involving risk-based assessments. Experienced in working at numerous sites involving petroleum hydrocarbons, chlorinated hydrocarbons, and metals. Experience includes multi-task projects at refineries, steel mills, chemical plants, petroleum terminals, and manufacturing facilities. Responsibilities included supervision of project staff, coordination of field activities, design and installation of monitoring systems, analysis of field and laboratory data, performing pumping and slug tests, preparation of characterization reports and negotiations with regulatory agencies. Experience includes: hydrogeology, RCRA and CERCLA, regulatory compliance, monitor well design and installation, aquifer testing, field mapping, and structural analysis, LNAPL and DNAPL site characterization, soil vapor surveys, X-ray fluorescence analyses, geophysics, seismic risk assessment, and litigation technical support and regulatory agency negotiations.
PROFESSIONAL AFFILIATIONS:
National Ground Water Association
Association of Ground Water Scientists and Engineers
Houston Geological Society
KEY PROJECTS:
Coordinated a large-scale soil removal action and subsurface investigation for a site involving total petroleum hydrocarbons. Performed comprehensive soil, sediment, ground water, and air sampling and analysis, data validation, aquifer testing, assessment of LNAPL, and developed a risk-based investigative/remedial evaluation approach consistent with the Texas Risk Reduction Rules, including preparation and implementation of a Corrective Measure Study. Participated in agency negotiations, risk assessment development, development of remedial alternatives, press conferences, and public meetings.
Managed a large-scale ground-water assessment at a steel mill in east Texas. Supervised all activities involving over 100 monitor wells and borings (including installation of telescopic casing), geophysical thermal logging, ground-water sampling, soil vapor survey, hydrograph interpretation, interpretation of complex hydrogeology, a risk assessment to evaluate the impact of the facility on an adjacent, large surface water body and negotiations with regulatory agency personnel.
Project Manager for over 150 Phase I environmental site assessments and over 40 Phase II environmental site assessments at industrial, commercial, and residential properties in Texas, Oklahoma, Arkansas, Mexico and England.
Site Coordinator for Remedial Investigation/ Feasibility Studies (RI/FS) at three State Superfund sites in west, east, and south Texas. Activities included assessment of the extent of elevated metals, petroleum and chlorinated hydrocarbons, creosote, and pesticides/PCBs concentrations in soil and ground water, Agreed Order negotiations, development and implementation of removal actions and implementation of risk assessments.
Coordinated remedial investigation activities for releases of volatile petroleum hydrocarbons and chlorinated solvents at two large petroleum terminals and two large solvent blending/packaging terminals in north-central and east Texas. Evaluated extent of affected soil and ground water at each facility using a combination of soil vapor survey, on-site analytical screening, borings and monitor wells, and developed remedial alternatives for each site.
Completed multi-task activities at the Hardage Superfund site to assess DNAPL and LNAPL. Involved soil borings, geophysics and geochemical sampling to assess fractures in bedrock. Performed pumping tests, packer and slug tests, analysis of photolinears, field mapping and basin-wide geologic studies. Participant in litigation activities including providing testimony, assistance with depositions, technical guidance to legal counsel, trial exhibits (including a piano-sized three-dimensional model of the site), and affidavits and findings of fact.
Coordinated a metals/soil investigation at a steel mill in north Texas. Involved assisting client with negotiations related to an Agreed Order, followed by collection and analysis of over 200 soil and surface water samples to assess impacts on surrounding soils. Developed remedial alternatives for closure consistent with the Texas Risk Reduction Rules. Assessed deeper aquifers for presence of DNAPL and dissolved phase constituents at industrial sites affected by chlorinated hydrocarbons. Applied the TNRCC's Risk Reduction Standard No. 3 evaluations (Risk Assessments) and established site-specific cleanup levels for sites. Also developed remedial evaluations in soil and ground water for organics and metals.
Coordinated regulatory compliance audits at large chemical manufacturing facilities, waste disposal sites, and equipment manufacturing facilities along the Texas Gulf Coast and in Mexico. Audits addressed all aspects related to air, solid and hazardous waste, ground water, wastewater and storm water.
Conducted and evaluated over 100 pumping and slug tests at a variety of facilities in Texas, Oklahoma, Louisiana and Mississippi. Included evaluation of hydraulic parameters in poorly transmissive aquifers.
Coordinated RCRA Facility Investigations (RFIs) involving affected soil and ground water at four petroleum refineries and chemical plants and one industrial landfarm facility in south and east Texas, Mississippi and Louisiana.
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Last Update: June 13, 1997