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Groundwater, Geochemistry, Hydrologic Engineering |
Susan Wyman P.E., P.G. - Principal Civil Engineer
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Susan Wyman is a hydrologist and civil engineer who specializes in surface water and groundwater control, flow and contaminant transport modeling, water supply evaluation, groundwater and soil remediation systems, and in the collection and analysis of geologic and hydrologic field data for water supply evaluation, permitting, and remediation. She has extensive experience in the both the technical and managerial aspects of preparing engineering design reports, Environmental Impact Statements, Environmental Assessments, Water Rights applications, Ground Water Discharge Permit applications, NPDES Permit applications, Discharge Monitoring Reports, Site Characterization reports, and Remedial Action plans. |
Representative Project Experience
Conducted vadose- and saturated-zone flow and contaminant transport modeling of hazardous and radioactive constituents in support of several Utah Ground Water Discharge Permits. Used the UNSAT-H and HELP3 codes to evaluate infiltration through closed cell covers and moisture content in the subsurface profile. Used PATH-EPA code to evaluate potential exposure to radionuclide, metal and organic constituents at a point-of-compliance well over time. Preparation and submission of reports, and follow-up support with UDEQ.
Modeled groundwater flow and geochemical transport systems using finite element and robust spreadsheet models. Prepared hydrogeologic reports in support of the EIS, evaluated water supply potential and open-pit dewatering requirements, prepared documents in support of the Water Rights Application to the Utah State Engineer, prepared and submitted facility-wide Ground Water Discharge Permit Application, performed field aquifer testing and water quality sampling for permitting. Maintained close client contact and worked with permitting agencies on a variety of groundwater-related issues.
Designed, installed, and tested a water treatment system for the removal of iron, manganese and barium at 3 surface water discharge points associated with 18 coal bed methane (CBM) production wells. Designed piping, valves, aeration tanks, filter tanks, and surface water NPDES outfall, including pressurized and gravity-fed segments. Provided recommendations for erosion control at outfalls and in-channel drainage structures..
Performed field investigation of subsurface chlorinated hydrocarbon occurrence in shallow groundwater and soils, developed remediation strategies and cost estimates, developed statistical methods for evaluating clean up criteria, authored the Site Characterization and Remediation Proposal, in support of litigation and under a Voluntary Cleanup Agreement with the State of Utah.
Drilled, packer-tested, and completed bedrock wells peripheral to an open pit copper mine. Conducted aquifer pumping tests in alluvial wells, as well as sampling of groundwater wells and surface water bodies. Developed and calibrated a regional 3D finite element groundwater flow model to predict the effects of well field pumping and open pit mining on local and regional hydrology. Three decades of historical project data were compiled for the development of the model. Modeling results were incorporated into the EIS for new mine operation. Assisted with presentation and defense at public hearings before the state board.
Designed a pumping and piping system to convey background mine water inflow from the 1290 level to a near-surface infiltration gallery. Evaluated water quality and potential water treatment requirements. Calculated friction losses and surge pressures, and specified pipe size and pump requirements for pressurized steel pipe system. Designed HDPE gravity piping system from the portal to the infiltration bed. Provided dimensions and specifications for infiltration bed components.
Performed third party review and hydrogeologic / geochemical characterization study for 180 mt. run of mine heap leach facility. Project work included the review of consultant reports and the development of an integrated hydrogeologic model for the site. Geochemical characterization testing included the development and performance of column leaching and attenuation studies for substrate materials using a synthetic pregnant leach solution. The main focus of the study was to support permitting of the facility and to determine the potential impacts to down stream water users.
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