
Andrew Franze P.G.
NC, PA
Geologist/Hydrogeologist Group Manager
M.S., Environmental Geochemistry, Wright State University
B.S., Environmental Geoscience, Slippery Rock University
Mr. Franze manages KEY’s geology group and specializes in groundwater monitoring and remediation projects. He has experience with Superfund, Voluntary Remediation, Brownfield/Redevelopment, and Coal Combustion Residuals projects in over 20 states. He has designed and implemented various groundwater remediation in situ injection programs. He develops conceptual site models and focuses on addressing specific project objectives in a cost-effective manner.
Experience:
Years Experience/years with KEY: 11/9
Practice Area(s):
Brownfield Remediation/Redevelopment
Coal Combustion Residuals
Emerging Contaminants
Environmental Due Diligence
Groundwater Flow/Contaminant Modeling
Site Assessment
Soil & Groundwater Remediation
Superfund/RCRA
Specialties
Hydrogeology
Geochemistry
Natural Attenuation
In Situ Remediation
Chlorinated Solvents

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Representative Projects:
Chemical Manufacturing Plant
Managed a groundwater monitoring and remediation project through the North Carolina Voluntary Program.
Reduced unnecessary spending and minimized the groundwater sampling network.
Designed and implemented in situ chemical oxidation groundwater remediation injections to treat groundwater impacted with chlorinated solvents and petroleum compounds.
Calculated an injection chemical dose from aquifer oxidant demand and hydrogeologic characterization.
Obtained an Underground Injection Control (UIC) Permit.
Procured chemicals and injection services and oversaw permanganate and persulfate injection events.
Evaluated vapor intrusion exposure pathways, cumulative risk, and updated the conceptual site model.
Demonstrated natural attenuation viability through a "multiple lines of evidence" approach.
Constructed a three-dimensional conceptual site model.
Completed trend tests and evaluated plume stability.
Retired Coal Power Plant CCR Site
Prepared an alternative source demonstration report for groundwater constituent exceedances per federal CCR Rule requirements.
Completed supplemental investigation work including a high-resolution transducer data collection study, rotosonic drilling monitoring well installation, coal mine seep reconnaissance, and production well surveying.
Devised a "multiple lines of evidence" demonstration concluding that groundwater impacts consisting of low pH, high sulfate, high TDS, high iron, and high cobalt were related to a historically mined area located upgradient of the regulated CCR units.
Reinterpreted groundwater flow directions at the site by integrating surface water and groundwater interactions.
Updated the conceptual site model through consideration of Army Corps of Engineers dam structure located in close proximity to the site.
Used statistical methods to define background geochemical variability.
Conducted a correlation analysis to identify indicator parameters associated with mining activities.
Created Piper and Stiff diagrams to characterize groundwater geochemical fingerprints associated with different zones.
Former Industrial Facility Superfund Site
Constructed a groundwater model using an extensive amount of high-quality site-specific dataset inputs
Completed the groundwater model to identify a more efficient dewatering strategy taking into account a fully enclosed slurry wall
Site-specific data included
1) Monthly pumping rate data from 26 pumping wells over a five-year period
2) Five years of daily site-specific precipitation data
3) Monthly water level measurements from 28 observation wells
4) Slug test data from shallow fill and sand units
5) Elevations of stratigraphic interfaces that were generated using extensive boring log data and kriging interpolation methods
Generated several model simulations and recommended a horizontal groundwater extraction feature to replace a majority of the 26 inefficient existing pumping wells