Mandy Tulich, P.G.

Complex Hydrogeologic Investigation at Former Waste Disposal Site, Confidential Location — Led a multiphase groundwater investigation to characterize complex contaminant fate and transport pathways in several aquifers beneath a former waste disposal site. Investigation included a historical data review, groundwater modeling, the drilling of soil borings, the collection of vertical aquifer profiling groundwater samples, and the installation and monitoring of pressure transducers in monitoring wells. Results were compiled in a comprehensive groundwater investigation report.

Evaluation of Groundwater Contamination beneath Historical Disposal Areas, Confidential Location — Investigated groundwater contamination at an active chemical facility stemming from several historical onsite disposal areas. Optimized the groundwater recovery system and developed a well installation and monitoring program to measure progress.

Natural Resource Damage Litigation, Washington County, Minnesota — Supported a natural resource damage litigation case, which involved researching the history and remediation of the Washington County Landfill and evaluating surface water and groundwater PFAS data for source characterization.

Assessment of Hydrocarbon Release at a Natural Gas Storage Facility, Los Angeles, California — Provided project management and technical support for a litigation case involving an insurance settlement following a large release of gas from a storage facility.

Paper Mill, Michigan — Provided technical support for a litigation case. Work included an analysis of chlorinated hydrocarbon data in river sediment.

Smelter Site, Tacoma, Washington — Provided site characterization support at a former smelter facility. Evaluated geochemistry and the distribution of site data and identified a complete and appropriate data set that led to correct characterization of the site. As part of a large bankruptcy litigation, supported preparation of expert testimony and aided the legal team at trial.

Natural Gas Storage Reservoir, Wyoming — Provided technical support for a litigation case involving natural gas migration within a storage facility. Reviewed data and evaluated geologic and geochemical data to characterize the site and the natural gas in the area.

Natural Gas Storage Reservoir, Kansas — Acted as geologist and project manager for a litigation case involving natural gas migration near a storage facility. Reviewed and evaluated geologic and geochemical data to characterize the site and the natural gas in the area.

Regional Chlorinated Solvent Plume, Los Angeles, California — Performed a hydrologic assessment and geochemical fingerprinting analysis of chlorinated solvents and other compounds to delineate multiple sources in an area with complex structural geology and groundwater flow.

Site Characterization and Remedial Design, California — Created a 3-dimensional site conceptual model of a former dry-cleaning site to aid in the delineation of chlorinated solvents in groundwater, plan investigative borings, and facilitate a remedial design of the site.

Mine Tailings Characterization, Montana — Characterized tailings deposits along two stream reaches to support ongoing litigation and allocation.

Multiple Mining Sites, Nevada — Created cross sections for numerous sites to support site characterization and aid in the development of a groundwater model and understanding of subsurface flow.

Marigold Mine, Nevada — Developed a regional, 3-dimensional geologic model (using Leapfrog Geo software) for the Battle Mountain region, including the Marigold mine. Provided hydrogeologic modeling support and assisted in report production.

Bald Mountain Mine, Nevada — Created numerous cross sections and assisted in developing a 3-dimensional Vulcan block model of the subsurface geology.

Cortez Hills and Pipeline Mines, Nevada — Created numerous regional- and local-scale cross sections and developed a regional geologic model of the entire Crescent Valley using Vulcan and Leapfrog Mining software. Provided geologic and hydrogeologic support, including updating models, creating cross sections, and drafting reports and figures.

Phoenix Mine, Nevada — Developed a simplistic, 3-dimensional geologic model to compare and assess the validity of a competitor’s hydrologic model and associated lithologic/hydrologic units. Mapped groundwater elevation contours and identified structures that impeded groundwater. Assisted in writing and compiling a baseline characterization report for the site.

PFAS Groundwater Remediation, Confidential Location — Performed a hydrologic and geologic assessment of an area impacted by PFAS. Developed a 3-dimensional geologic model and enhanced the conceptual site model to identify PFAS hot spots on site. Utilized a refined groundwater model to design and install several pumping wells to optimize an underperforming groundwater containment system. Managed multiple phases of fieldwork for drilling and installing wells, planning pump tests, and bringing the enhanced remedial system online.

PFAS Site Assessment, Confidential Location — Performed a groundwater assessment, planned and implemented a field program, and developed a 3-dimensional geologic and site conceptual model to improve the understanding of groundwater flow and contaminant fate and transport at a historical PFAS disposal site. Assessed the performance of an existing groundwater containment system, evaluated an option of onsite infiltration, and proposed a strategy for remedial optimization.

PFAS Site Investigation, Confidential Location — Led a site investigation to characterize the nature and extent of PFAS present in soil and groundwater at a former industrial site. Worked with the state regulatory agency to identify contaminants of concern on site.

PFAS Investigation, Confidential Location — Led a multiphase investigation to determine hydrogeology of an area that includes a former PFAS manufacturer, multiple alternative source areas, and complex surface water and groundwater transport pathways.

PFAS Natural Resource Damage Assessment (NRDA) Litigation, Confidential Location — Provided technical support for a groundwater and surface water NRDA litigation case involving PFAS, including PFOA and PFOS. Analyzed data to evaluate potential source locations and provided groundwater modeling support.

PFAS Plume Modeling, Alaska — Created a 3-dimensional geologic model of a PFAS plume in a region of complex subsurface transport due to the presence of permafrost.

PFAS Site Conceptual Model, New Jersey — Created a 3-dimensional geologic model of a large region in New Jersey to enhance the conceptual site model, aid in the placement of future monitoring well locations and depths to screen for PFAS-contaminated groundwater, and aid in remedial design.

Chemical Manufacturing Facility, Minnesota — Served as project manager and primary point of contact for the investigation, remedial monitoring, and optimization of a groundwater pump and treat system. Directed fieldwork and groundwater modeling that resulted in a recommendation to the client to drill additional remedial wells that targeted and increased mass recovery on site by more than 20 fold. Performed a wide range of duties, including preparing a scope of work and budget estimates for multiple phases of work, planning and coordinating field efforts, making a technical analysis of data results, preparing data summary and comprehensive groundwater assessment reports, preparing revisions to water appropriations permit, and coordinating with the client and Minnesota Pollution Control Agency to meet objectives.

Former Chemical Waste Disposal Site, Minnesota — Acted as project manager and primary client contact for a groundwater investigation at a former waste disposal site. Prepared a scope of work and budget documents and field investigation work plans that were submitted to the state regulatory agency. Coordinated with multiple subcontractors, prepared summary report documents, and presented to the client. Through investigations and communications with the client and project team, dissipated the concern of hydraulic capture breakthrough impacting a downgradient municipal well field.

Former Chemical Manufacturing Facility, California — Acted as project manager and key technical staff for a groundwater investigation at a former chemical manufacturing facility to differentiate the client’s impact to groundwater from multiple other sources, including a large Superfund site. Prepared work proposals and budgets while coordinating with laboratories for estimates of microbial, isotope, and standard analyses. Prepared sampling investigation work plans and summary reports. Met with California Department of Water Resources to discuss the unique groundwater flow system near the site and the outcome of the analyses.

Multiple Oil and Gas Wastewater Injection Sites, California — Created cross sections for numerous sites to support site characterization and aid in the development of a groundwater model and understanding of subsurface flow.

Kern River Oil Field Expansion Area Hydrogeologic Evaluation, Bakersfield, California — Correlated numerous well logs and estimated the size of aquifers and potential water production.

Kern River Oil Field, Bakersfield, California — Evaluated secondary reserves, completed geologic modeling and log correlation within the oil field, and planned new wells for the southern expansion area.

Former Wood Treating Facilities, Confidential Locations — Characterized sites where former wood treating activities occurred. Integrated multiple data types to create 3-dimensional site conceptual models of areas to aid in site understanding, stakeholder communication, and remedial design.

3-Dimensional Geologic and Contaminant Modeling for Various Mining, Industrial, and Municipal Projects, United States — Performed spatial analyses of complex data sets and generated 3‑dimensional models and figures using Leapfrog Works.