Occurrence of methane in groundwater of south-central New York State, 2012-systematic evaluation of a glaciated region by hydrogeologic setting

Heisig, Paul M.; Scott, Tia-Marie

doi:10.3133/sir20135190

Cited by 43 publications

(112 citation statements)

References 22 publications

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“…The highly saline sodium chloride brines and overlying groundwaters of intermediate salinity generally are present 1,000 feet or more below the surface (Feth, 1965;Heisig and Scott, 2013). Such brine-influenced waters commonly are produced from gas or oil wells (Dresel and Rose, 2010;Hayes, 2009;Halusczak and others, 2013), and may affect water quality of springs and domestic-supply wells (Llewellyn, 2014;Siegel and others, 2015).…”

Section: Conceptual Hydrogeochemical Settingmentioning

confidence: 99%

“…These trace cations can also appear locally as pure carbonate phases. Over the range of pH, the SI values for siderite, , plus median composition of brine from oil and gas wells in western Pennsylvania (Dresel and Rose, 2010) and flowback water from Marcellus Shale gas wells (Hayes, 2009). Symbols for groundwater scaled by specific conductance.…”

Section: Water-quality Variations and Water-rock Interactionsmentioning

confidence: 99%

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Groundwater quality for 75 domestic wells in Lycoming County, Pennsylvania, 2014

Gross¹,

Cravotta²

2017

Scientific Investigations Report

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Section: Conceptual Hydrogeochemical Settingmentioning

confidence: 99%

Section: Water-quality Variations and Water-rock Interactionsmentioning

confidence: 99%

Groundwater quality for 75 domestic wells in Lycoming County, Pennsylvania, 2014

Gross¹,

Cravotta²

2017

Scientific Investigations Report

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“…major stream feature. The proximity to streams was used to differentiate valley from upslope sample locations, with greater methane concentrations expected in valley areas because these areas are more likely to represent regional groundwater discharge areas, and hence groundwater with a longer residence time in the subsurface and greater potential to interact with strata producing methane (Heisig and Scott 2013). The present study, however, found significantly elevated methane levels in upland areas (i.e., >300 m from stream feature) compared to valley areas.…”

Section: Well Water Geochemistrymentioning

confidence: 64%

“…Several recent studies have investigated the spatial patterns of regional groundwater methane distribution using statistical techniques, and it has generally been found that dissolved methane in well water was best correlated with groundwater geochemistry (Molofsky et al 2013;McPhillips et al 2014) with some studies also reporting significantly higher concentrations of methane encountered in lowland or valley areas compared to upland or hill top areas (Molofsky et al 2013;Heisig and Scott 2013).…”

Section: Introductionmentioning

confidence: 99%

Assessing patterns of dissolved methane in shallow aquifers related to Carboniferous and Triassic sedimentary basins, Nova Scotia, Canada

Kennedy

Drage

2015

atgeol

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The study examines patterns of groundwater methane in shallow aquifers located in Carboniferous and Triassic sedimentary basins in Nova Scotia to improve our understanding of the factors influencing the observed distribution. A combined total of over 800 dissolved methane samples were collected from water wells during surveys conducted in 1975 and 2013. Statistical analyses of the methane data did not detect a significant difference between groupings of methane concentrations for aquifer type, bedrock group, and distance to wetlands. A significant difference, however, was observed between sedimentary basins and bedrock formations, which was largely attributed to localized higher methane concentrations found in the Stellarton Formation/basin compared to other on-shore sedimentary basins of the province. A significant difference was also found between groupings of methane data based on the distance to major stream systems, which was used to indicate topographic position (i.e., valley vs. upslope). The low sample density and percentage of detectable methane concentrations, and the multiple sources of dissolved methane in shallow groundwater in sedimentary basins made it difficult to detect and interpret statistical and spatial trends. Geochemical classification indicates that elevated dissolved methane in well water is associated with sodium dominated groundwater. RÉSUMÉL' étude porte sur les schémas de méthane dans les eaux souterraines des aquifères peu profonds des bassins sédimentaires du Carbonifère et du Trias en Nouvelle-Écosse, afin d'améliorer notre compréhension des facteurs qui influent sur la distribution observée. En tout, plus de 800 échantillons de méthane dissous ont été recueillis dans des puits d' eau lors de levés réalisés en 1975 et en 2013. Les analyses statistiques des données sur le méthane ne révèlent pas une différence importante entre les groupes de concentrations de méthane par type d'aquifère, par groupe de substratum rocheux ou par distance des terres humides. On a toutefois observé une différence importante entre les bassins sédimentaires et les formations de substratum rocheux, qui a été en grande partie attribuée aux concentrations de méthane localisées plus élevées dans la formation et le bassin de Stellarton par comparaison avec d'autres bassins sédimentaires terrestres de la province. On a également découvert une différence importante entre les groupes de données sur le méthane fondés sur la distance des principaux chevelus hydrographiques, que l' on a utilisée pour indiquer la position topographique (vallée ou hauteurs). La faible densité des échantillons et le faible pourcentage de concentrations de méthane détectables, ainsi que les multiples sources de méthane dissous dans les eaux souterraines peu profondes des bassins sédimentaires, ont rendu difficiles la détection et l'interprétation des tendances statistiques et spatiales. La classification géochimique indique que les taux élevés de méthane dissous dans les eaux des puits sont associés aux eaux souterraines à conc...

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“…The groundwater quality in private wells can be impacted by myriad factors, including the geological source formation, topography (valley or upland) of the well site, groundwater flow path, recent amount of precipitation, productivity and the amount of daily water usage, other potential contamination sources (e.g., sewage, road spills of chemicals), wellbore/casing integrity, and well depth of private wells. For example, methane levels in groundwater (GW) have been found to be statistically higher in valleys and/or under confined groundwater conditions (Heisig and Scott, 2013). Uplands are groundwater recharge areas, while valleys tend to be discharge areas located at the end of flowlines with more evolved geochemistry.…”

Section: Introductionmentioning

confidence: 99%

Association of groundwater constituents with topography and distance to unconventional gas wells in NE Pennsylvania

Yan

Stute

Panettieri

et al. 2017

Science of The Total Environment

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Recently we reported an association of certain diseases with unconventional gas development (UGD). The purpose of this study is to examine UGD’s possible impacts on groundwater quality in northeastern Pennsylvania. In this study, we compared our groundwater data (Columbia 58 samples) with those published data from Cabot (1701 samples) and Duke University (150 samples). For each dataset, proportions of samples with elevated levels of dissolved constituents were compared among four groups, identified as upland far (i.e. ≥1km to the nearest UGD gas well), upland near (<1km), valley far (≥1 km), and valley near (< 1 km) groups. The Columbia data do not show statistically significant differences among the 4 groups, probably due to the limited number of samples. In Duke samples, Ca and CI levels are significantly higher in the valley near group than in the valley far group. In the Cabot dataset, methane, Na, and Mn levels are significantly higher in valley far samples than in upland far samples. In valley samples, Ca, Cl, SO4, and Fe are significantly higher in the near group (i.e. < 1 km) than in the far group. The association of these constituents in valley groundwater with distance is observed for the first time using a large industry dataset. The increase may be caused by enhanced mixing of shallow and deep groundwater in valley, possibly triggered by UGD process. If persistent, these changes indicate potential for further impact on groundwater quality. Therefore, there is an urgent need to conduct more studies to investigate effects of UGD on water quality and possible health outcomes.

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Occurrence of methane in groundwater of south-central New York State, 2012-systematic evaluation of a glaciated region by hydrogeologic setting

Cited by 43 publications

References 22 publications

Groundwater quality for 75 domestic wells in Lycoming County, Pennsylvania, 2014

Groundwater quality for 75 domestic wells in Lycoming County, Pennsylvania, 2014

Assessing patterns of dissolved methane in shallow aquifers related to Carboniferous and Triassic sedimentary basins, Nova Scotia, Canada

Association of groundwater constituents with topography and distance to unconventional gas wells in NE Pennsylvania

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