地下水地质学：环境工业和地下水生产项目的实践现状.pdf

1、Groundwater Geology:State of the Practice in the Environmental Industry and in Groundwater Production ProjectsRick Cramer10/17/2024 More than 126,000 sites across the U.S.require remediation More than 12,000 of these sites are considered complex “due to inherent geologic complexities,restoration wit

2、hin the next 50-100 years is likely not achievable.”Alternatives for Managing the Nations Complex Contaminated Groundwater Sites National Academy of Sciences Committee on Future Options for Management in the Nations Subsurface Remediation Effort,2013The Problem of Aquifer HeterogeneityUS Air Force C

3、ritical Process Analysis(CPA)Project ReviewPrimary Finding was Improved CSM=Remediation OptimizationAddress the greatest uncertainty,the subsurface Start with using existing datainvestment has already been made by the client!Defines subsurface“plumbing”:Identify groundwater flow paths and preferenti

4、al contaminant migration pathways Optimize data gap programs,groundwater monitoring programs,and remediation designBenefits of Geology-Focused ApproachGEOSYNTEC CONSULTANTSFocus your site strategy to save significant time and moneyKeyPoint Paradigm Shift Remediation GeologyESS is a Geology-Focused C

5、onceptual Site ModelGEOSYNTEC CONSULTANTSRef:Murray Einarson,2023Groundwater Production IndustryTraditional Approach to the SubsurfaceGroundwater supply studies based on assumptions of homogeneous and isotropic conditions,steady-state observationsTraditional Focus on HydrologyState of the practice i

6、s to apply Darcys law,assume homogeneous and isotropic conditions within layers of interestContaminant plumeGroundwater gradient=Groundwater flowTraditional Focus on EngineeringUnified Soil Classification System(USCS):Standard Practice for Classifying Soils(Chart from ASTM)Lithostratigraphic Correla