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IF 1.8 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2025-05-19 DOI: 10.1111/gwmr.12715

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Education Corner: A Quick Look Back at In Situ Air Sparging 教育专区：快速回顾原位空气喷射

IF 1.8 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2025-04-26 DOI: 10.1111/gwmr.12716

Neil R. Thomson, Michael C. Marley

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SERDP & ESTCP Corner: Headlines from the Environmental Restoration Program Area SERDP & ESTCP角：来自环境恢复计划领域的头条新闻

IF 1.8 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2025-04-22 DOI: 10.1111/gwmr.12721

Sarah Mass P.E., M.Sc.

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Indoor Air Background Concentrations of Volatile Organic Compounds (VOCs) in California Residences 加州住宅室内挥发性有机化合物（VOCs）本底浓度

IF 1.8 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2025-04-18 DOI: 10.1111/gwmr.12719

Gina Plantz, Kelly Chatterton, Rich Rago, Bart Eklund, Heidi Hayes, Monica Tran

{"title":"Indoor Air Background Concentrations of Volatile Organic Compounds (VOCs) in California Residences","authors":"Gina Plantz, Kelly Chatterton, Rich Rago, Bart Eklund, Heidi Hayes, Monica Tran","doi":"10.1111/gwmr.12719","DOIUrl":"https://doi.org/10.1111/gwmr.12719","url":null,"abstract":"A study was performed to measure typical “indoor air background” concentrations of volatile organic compounds (VOCs) in residential buildings in the state of California that were not known to be impacted by subsurface sources. A total of 57 buildings were sampled between February 2023 and February 2024, with one sample collected per building. The data set represents 38 different cities within the state of California. The samples were analyzed using the United States Environmental Protection Agency (EPA) Method TO-15 (EPA 1999) in both full-scan and Selected Ion Monitoring (SIM) modes. A total of 105 individual VOCs were reported for each sample. The overall data set is 5985 individual data points, with concentrations of target compound VOCs reported from less than the laboratory method reporting limit of 0.044 μg/m3 (micrograms per cubic meter) to concentrations up to 14,000 μg/m3. Various VOCs were detected at concentrations above screening levels used in California and elsewhere in the United States, including Benzene, Naphthalene, Tetrachloroethene (PCE), and Trichloroethene (TCE). These compounds are often considered “risk drivers” in vapor intrusion (VI) studies, so their presence in background air at concentrations above screening levels may complicate such studies. Compared with previous, similar studies, this study is more comprehensive with a larger number of VOCs analyzed and with greater analytical sensitivity. Based on the professional backgrounds of the study group which included environmental professionals, regulatory officials, and attorneys, the authors opine that the results of this residential indoor air background study may be biased low relative to the general population. Therefore, the results of the Study are considered to reflect a conservative snapshot of indoor air background VOCs in California residences.","PeriodicalId":55081,"journal":{"name":"Ground Water Monitoring and Remediation","volume":"45 2","pages":"40-55"},"PeriodicalIF":1.8,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gwmr.12719","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091283","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}

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Advances in Remediation: Emerging Opportunities for Beneficial Recovery of Critical Minerals From Metal-Impacted Waters During Remediation 修复的进展：在修复过程中从受金属影响的水中有益回收关键矿物的新机会

IF 1.8 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2025-04-18 DOI: 10.1111/gwmr.12717

Craig Divine, Jeffrey Gillow, Paloma Spina, Shannon Ulrich, Chris Griggs, Anthony Bednar

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Regulator's Perspective: Federal Groundwater Regulatory Summary for 2024 监管者的观点：2024年联邦地下水监管摘要

IF 1.8 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2025-04-16 DOI: 10.1111/gwmr.12718

Charles Job

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A Non-Reactive Gas System to Reduce Well Fouling and Maintenance of Extraction Wells 减少油井结垢和油井维护的无反应气体系统

IF 1.8 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2025-04-11 DOI: 10.1111/gwmr.12711

Benjamin B. Petersen P.G., Shelly M. Griffin M.Sc., Harvey A. Cohen Ph.D., P.G.

{"title":"A Non-Reactive Gas System to Reduce Well Fouling and Maintenance of Extraction Wells","authors":"Benjamin B. Petersen P.G., Shelly M. Griffin M.Sc., Harvey A. Cohen Ph.D., P.G.","doi":"10.1111/gwmr.12711","DOIUrl":"https://doi.org/10.1111/gwmr.12711","url":null,"abstract":"Chronic chemical and biological fouling of groundwater extraction wells can lead to high well-maintenance costs, increased pump downtime, and decreased pump efficiency. Commonly observed types of fouling include chemical precipitation of iron and carbonate minerals, bacterial accumulation, and oxidation in the pumping environment. Standard methods to rehabilitate and prevent fouling include chlorine treatments, acid and heat treatments, and physical scrubbing of screens and risers. Methods may effectively target one type of fouling while enhancing other fouling types. A down-well, fouling-prevention system was designed, tested, and then implemented on a sitewide basis at the former Bannister Federal Complex property in Kansas City, Missouri. Extraction wells at the site had a multi-decade history of chronic fouling. The antifouling system presented here creates an oxygen-deprived environment within the air column of the well through air displacement with a non-reactive gas. The removal of oxygen from the air column inhibits both biological activity and certain chemical reactions associated with fouling and does not require the use of chemical treatments or manual scrubbing. At the end of the year-long study period, chemical and biological fouling within the test wells was largely absent, whereas control wells undergoing chlorine treatment were heavily fouled and required rehabilitation.","PeriodicalId":55081,"journal":{"name":"Ground Water Monitoring and Remediation","volume":"45 2","pages":"56-64"},"PeriodicalIF":1.8,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091548","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}

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In My Experience: Changing Perceived Liabilities into Assets 以我的经验：将感知负债转变为资产

IF 1.8 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2025-04-11 DOI: 10.1111/gwmr.12720

Tom Aley M.Sc

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Society News_Spring25 社会News_Spring25

IF 1.8 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2025-04-11 DOI: 10.1111/gwmr.12714

Mike Price

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Evaluating Mineral and In Situ Indicators of Abiotic Dechlorination in Clayey Soils 粘性土非生物脱氯的矿物和原位指标评价

IF 1.8 4区环境科学与生态学

Ground Water Monitoring and Remediation Pub Date : 2025-03-19 DOI: 10.1111/gwmr.12709

Charles E. Schaefer, Danielle Tran, Dung Nguyen, Drew E. Latta, Charles J. Werth

{"title":"Evaluating Mineral and In Situ Indicators of Abiotic Dechlorination in Clayey Soils","authors":"Charles E. Schaefer, Danielle Tran, Dung Nguyen, Drew E. Latta, Charles J. Werth","doi":"10.1111/gwmr.12709","DOIUrl":"https://doi.org/10.1111/gwmr.12709","url":null,"abstract":"Naturally occurring abiotic dechlorination reactions in clayey soils can serve as an important attenuation mechanism for groundwaters impacted by chlorinated solvents such as trichloroethene (TCE). Potential abiotic reactions include both reductive (anoxic) and oxidative (oxic) dechlorination reactions that are facilitated by ferrous minerals. However, tools to provide lines of evidence for such reactions, and ultimately screening-level estimates of dechlorination rate constants that can be incorporated into site fate and transport models, are yet to be widely accepted for these clayey systems. Herein, coupled bench- and field-scale testing at nine locations within the saturated zone showed that measurement of reduced gases in field-collected clayey samples was inconclusive for indicating in situ abiotic reductive dechlorination. However, the use of 1% (v/v) HCl extractions and X-ray diffraction (XRD) for mineral composition provided the information needed to estimate TCE abiotic reductive dechlorination in clays, thereby serving as a potential screening tool for site investigation. While a corresponding screening tool for estimating abiotic oxidative dechlorination in clay was not demonstrated, the rate of hydroxyl radical generation measured for each clay in batch experiments was correlated to in situ hydrogen peroxide concentrations measured in groundwater near the sand-clay interface. Thus, this observation provides (to our knowledge) a first line of evidence that ongoing reactive oxygen species generation is occurring in situ near the sand–clay (oxic–anoxic) interface, potentially serving as a means to facilitate abiotic oxidative dechlorination and mitigate back-diffusion of chlorinated solvents from clay.","PeriodicalId":55081,"journal":{"name":"Ground Water Monitoring and Remediation","volume":"45 2","pages":"31-39"},"PeriodicalIF":1.8,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091803","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}

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