Ground Water Monitoring and Remediation最新文献_第10页

High-Resolution Geological Information from Crosshole Ground Penetrating Radar in Clayey Tills 克雷蒂尔斯井间探地雷达高分辨率地质信息

IF 1.9 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2023-06-19 DOI: 10.1111/gwmr.12588

Bolette B. Jensen, Louise Rosenberg, Aikaterini Tsitonaki, Nina Tuxen, Poul L. Bjerg, Lars Nielsen, Thomas M. Hansen, Majken C. Looms

{"title":"High-Resolution Geological Information from Crosshole Ground Penetrating Radar in Clayey Tills","authors":"Bolette B. Jensen, Louise Rosenberg, Aikaterini Tsitonaki, Nina Tuxen, Poul L. Bjerg, Lars Nielsen, Thomas M. Hansen, Majken C. Looms","doi":"10.1111/gwmr.12588","DOIUrl":"10.1111/gwmr.12588","url":null,"abstract":"Heterogeneous glacial deposits dominate large parts of the Northern Hemisphere. In these landscapes, high-resolution characterization of the geology is crucial for understanding contaminant transport. Geological information is mostly obtained from multiple boreholes drilled during a site investigation, but such point-based data alone do not always provide the required resolution to map small-scale heterogeneity between boreholes. Crosshole ground penetrating radar (GPR) is suggested as a tool for adding credible geological information between boreholes at contaminated site investigations in industrial sites where infrastructure, such as electrical installations, can pose a challenge to other geophysical methods. GPR data are sensitive to the dielectric permittivity and the bulk electrical conductivity, which can be related to the distribution of water content and sand/clay occurrences. Here we present a detailed crosshole GPR dataset collected at an industrial contaminated site in a clay till setting. The data are processed using a novel inversion approach where information on changes in the velocity and attenuation of the radar signal are obtained independently. The GPR results are compared to borehole logs, grain size analyses, and relative permeability data from the site. The GPR data analysis provided valuable information on the understanding of the lateral geological variability. A silt layer with a thickness of a few decimeters, likely important for flow characterization, was confirmed and resolved by GPR data. Our findings suggest that crosshole GPR has the potential for contributing with high-resolution geological information by filling the data gap between boreholes, thereby becoming a relevant tool in contaminated site investigations.","PeriodicalId":55081,"journal":{"name":"Ground Water Monitoring and Remediation","volume":"43 4","pages":"55-66"},"PeriodicalIF":1.9,"publicationDate":"2023-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ngwa.onlinelibrary.wiley.com/doi/epdf/10.1111/gwmr.12588","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126455320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integrated Three-Dimensional Geological and Numerical Groundwater Model Development 三维地质和数值地下水综合模型开发

IF 1.9 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2023-06-16 DOI: 10.1111/gwmr.12593

Michael LeFrancois, Morgan Farmer, Marc Carver

{"title":"Integrated Three-Dimensional Geological and Numerical Groundwater Model Development","authors":"Michael LeFrancois, Morgan Farmer, Marc Carver","doi":"10.1111/gwmr.12593","DOIUrl":"https://doi.org/10.1111/gwmr.12593","url":null,"abstract":"Conceptual site model (CSM) development is a foundational step for numerical groundwater model construction. Tools for reviewing and combining disparate data to develop a CSM have been furthered through software that efficiently integrates multiple data streams, especially when a large amount of information is available at complex sites. Three-dimensional (3D) interfaces for data visualization and geological modeling are becoming commonly used to compile data, support development of a robust CSM, and create effective visuals that enable project stakeholders to understand site complexity. This article describes a 3D interface workflow applied to a geological and numerical groundwater modeling case study where numerical modeling (i.e., MODFLOW family of codes) was used to assess remedy effectiveness. Specifically, the numerical model was used to overview an in situ solidification (ISS) application, where soil mixing will be conducted with cement, for possible adverse effects to an existing groundwater treatment system. 3D geological modeling allowed for the existing numerical groundwater flow model to be reconstructed to include previously overlooked data on buried infrastructure, which led to a detailed depiction of high-permeability channels and a more accurate representation of site conditions. Modeling showed that the ISS remedy would not adversely impact the existing groundwater treatment system. Integration of existing data within a 3D interface led to hydrogeological insights that would have been difficult to obtain from two-dimensional visualization of information, improved numerical modeling efficiency, and informed site remedy decisions. Additionally, the 3D interface created effective visuals that increased internal and external project team conceptual understanding.","PeriodicalId":55081,"journal":{"name":"Ground Water Monitoring and Remediation","volume":"43 3","pages":"121-128"},"PeriodicalIF":1.9,"publicationDate":"2023-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50151362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

State of the Practice Worldwide: Complex Installation for In Situ Thermal Remediation Beneath an Active Manufacturing Facility 世界范围内的实践现状:在一个活跃的生产设施下面进行原位热修复的复杂装置

IF 1.9 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2023-06-07 DOI: 10.1111/gwmr.12589

Gorm Heron, Chris Thomas, Chad Crownover, Robert Glass, Gregory Crisp, Bruce S. Kennington, Scott Tarmann, Luis Hidalgo

{"title":"State of the Practice Worldwide: Complex Installation for In Situ Thermal Remediation Beneath an Active Manufacturing Facility","authors":"Gorm Heron, Chris Thomas, Chad Crownover, Robert Glass, Gregory Crisp, Bruce S. Kennington, Scott Tarmann, Luis Hidalgo","doi":"10.1111/gwmr.12589","DOIUrl":"10.1111/gwmr.12589","url":null,"abstract":"In situ thermal remediation (ISTR) was used to treat a vadose-zone source of trichloroethylene present at depths of 60 to 125 ft. below an occupied building at an active manufacturing facility. ISTR required innovative methods to install 135 steel casings from inside the building that included access limitations, space constraints that required angled borings and pre-modeling of rig mast positions, control measures to manage exhaust from up to four drill rigs operating simultaneously, adjustments to heater wiring to limit temperatures in shallow soils leading to indoor air heating and potential for vapor intrusion, and ensure proper positioning and trajectory of closely spaced heaters. The installed heater casings were surveyed using a Devi-Flex™ tool to monitor heater placement in casings that ranged from 87 to 196 ft. at angles between 90° and 30° from horizontal and periodically had to compensate for deflections caused by cobbles and boulders. Additional casings were installed to ensure adequate heater spacings in cases where deviations exceeded design parameters. ISTR was conducted using custom-built thermal conduction heaters designed to minimize heat output in the shallow vadose zone and inside the building while temperatures in the lower vadose zone were maintained near boiling. Cables, vapor extraction pipes, and exhaust ducts were routed overhead and through the building roof to minimize disturbance to manufacturing operations. To expedite remediation, three groups of heaters and vapor recovery wells were installed and operated in overlapping periods. The major challenges and solutions for ISTR design, construction, and operation are presented. Operations and remedial results are covered in a companion paper.","PeriodicalId":55081,"journal":{"name":"Ground Water Monitoring and Remediation","volume":"43 4","pages":"104-113"},"PeriodicalIF":1.9,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133711681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fluorescent Dyes as Partitioning Tracers for the Estimation of NAPL-Mass Saturation in Porous Media 荧光染料作为分配示踪剂用于估计多孔介质中napl的质量饱和度

IF 1.9 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2023-06-07 DOI: 10.1111/gwmr.12591

Sofia Visitacion-Carrillo, Stéfan Colombano, Nicolas Fatin-Rouge, Dorian Davarzani

{"title":"Fluorescent Dyes as Partitioning Tracers for the Estimation of NAPL-Mass Saturation in Porous Media","authors":"Sofia Visitacion-Carrillo, Stéfan Colombano, Nicolas Fatin-Rouge, Dorian Davarzani","doi":"10.1111/gwmr.12591","DOIUrl":"10.1111/gwmr.12591","url":null,"abstract":"Accurate estimation of the nonaqueous phase liquids (NAPLs) saturation such as chlorinated organic compounds (COCs) in aquifers is crucial for the proper remediation of contaminated groundwater. A combination of conservative and partitioning tracers (PTs) are commonly used to assess NAPL saturations in the subsurface at COC release sites, using the partitioning interwell tracer test (PITT). In this study, five fluorescent dyes were assessed as PTs to estimate the saturation of octanol and 3 COC NAPLs in soil columns. PT experiments required an initial assessment of both partitioning (NAPL/water and octanol/water) and linear free-energy relations. The predictability of the partition coefficients was correlated to the pH of the two-phase fluids for both systems (NAPL/water and octanol/water). The COC NAPLs were acidic and some PTs with acid-base properties, like fluorescein, are easily influenced by pH. The PITT experiments were performed in a column packed with glass beads, using rhodamine WT as PT because of its particular specificity for the complex mixture of NAPLs and sodium chloride as the inert tracer. Breakthrough curves of rhodamine WT were examined to estimate the saturation of a NAPL made of a complex mixture of COCs. The DNAPL residual saturation estimation accuracy was sensitive to both pH variations and the water velocity. The latter was represented by an exponential function which resulted from non-equilibrium measurements, heterogeneous sweeping of the contaminated sample, and redistribution of the NAPL droplets in the medium.","PeriodicalId":55081,"journal":{"name":"Ground Water Monitoring and Remediation","volume":"43 4","pages":"82-91"},"PeriodicalIF":1.9,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ngwa.onlinelibrary.wiley.com/doi/epdf/10.1111/gwmr.12591","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114682981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical In Situ Monitoring of Acid Mine Drainage Remediation: Laboratory and Model Investigation 酸性矿山排水修复的光学原位监测:实验室与模型研究

IF 1.9 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2023-06-07 DOI: 10.1111/gwmr.12590

Maximilian Reuß, Sascha E. Oswald, Matthias Munz, Michael U. Kumke

{"title":"Optical In Situ Monitoring of Acid Mine Drainage Remediation: Laboratory and Model Investigation","authors":"Maximilian Reuß, Sascha E. Oswald, Matthias Munz, Michael U. Kumke","doi":"10.1111/gwmr.12590","DOIUrl":"10.1111/gwmr.12590","url":null,"abstract":"A permeable reactive barrier (PRB) can be deployed to remediate acid mine drainage. The performance of a PRB material under different boundary conditions (pH, flow velocity, and sulfate concentration) was investigated in a series of column experiments applying in-situ optical sensing methods for pH and oxygen detection. The reactive material consisted of organic components (compost, wood, and coconut shell) mixed with calcium carbonate and fine gravel. The input concentrations were around 1000 mg/L for iron and 3000 mg/L for sulfate, and the pH value was 6.2. The remediation efficiency of iron was 14.6% and of sulfate 15.2%, but was expected to scale up when moving to a field-site PRB with greater thickness. The iron and sulfate removal was influenced by decreasing the flow velocity and increasing the sulfate input concentration and the pH value. In an experiment with low pH boundary conditions (pH = 2.2), acidity was neutralized in the PRB by calcium carbonate during an experiment duration of 47 days. The modeling program MIN3P was used to create a simulation of the laboratory experiments. This helps to design parameters, for example, the residence time in the PRB, which is necessary for close to 100% remediation efficiency. This study shows the application of optical oxygen and pH monitoring in PRBs. In this context, they can be used to monitor the stability of a PRB for the remediation of acid mine drainage (AMD).","PeriodicalId":55081,"journal":{"name":"Ground Water Monitoring and Remediation","volume":"43 4","pages":"67-81"},"PeriodicalIF":1.9,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ngwa.onlinelibrary.wiley.com/doi/epdf/10.1111/gwmr.12590","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116419941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Issue Information - ISSN page 问题信息-ISSN页面

IF 1.9 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2023-05-19 DOI: 10.1111/gwmr.12460

引用次数: 0

NGWA News NGWA新闻

IF 1.9 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2023-05-19 DOI: 10.1111/gwmr.12577

引用次数: 0

Newsmakers Column Newmakers专栏

IF 1.9 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2023-05-19 DOI: 10.1111/gwmr.12578

引用次数: 0

Newsline 时事纵横

IF 1.9 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2023-05-19 DOI: 10.1111/gwmr.12575

引用次数: 0

Featured Products Column 特色产品专栏

IF 1.9 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2023-05-19 DOI: 10.1111/gwmr.12576

引用次数: 0