Road salt retention and transport through vadose zone soils to shallow groundwater

Baraza, Teresa; Hasenmueller, Elizabeth A.

doi:10.1016/j.scitotenv.2020.142240

Cited by 11 publications

(11 citation statements)

References 48 publications

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“…This is consistent with observations and evapotranspiration estimates made at nearby meteorological stations (DEOS, 2020). This contrasts with the results of others (Baraza & Hasenmueller, 2021;Beak et al, 2020), who found no evidence of evaporative fractionation occurring during infiltration. Sites with best management practices that use engineered materials to reduce stormwater detention aboveground and increase infiltration rates, such as the permeable pavement and infiltration gallery of Beak et al (2020), may experience less evaporation both in the basin and in the vadose zone than sites that do not use materials that promote infiltration.…”

Section: Surface Physical Processes Impact Quality Of Stormwater Rech...contrasting

confidence: 99%

“…This results in high-Na/low-to-moderate-Cl, non-winter stormwater (or stormwater that was not deicer-impacted) recharging the water table beneath the basin. These findings are consistent with previous field studies of the vadose zone and shallow groundwater (Burgis et al, 2020;Baraza & Hasenmueller, 2021).…”

Section: Stormwater Quality Influences Ion Exchange and Ra Mobilizationsupporting

confidence: 93%

“…(2020), may experience less evaporation both in the basin and in the vadose zone than sites that do not use materials that promote infiltration. Additionally, sites with a shallow water table or a rapid pathway from surface to groundwater, such as the karst site of Baraza & Hasenmueller (2021), will also experience less evaporation in the vadose zone and more rapid mixing of stormwater and existing groundwater.…”

Section: Discussionmentioning

confidence: 99%

“…Sites with best management practices that use engineered materials to reduce stormwater detention aboveground and increase infiltration rates, such as the permeable pavement and infiltration gallery of Beak et al (2020), may experience less evaporation both in the basin and in the vadose zone than sites that do not use materials that promote infiltration. Additionally, sites with a shallow water table or a rapid pathway from surface to groundwater, such as the karst site of Baraza & Hasenmueller (2021), will also experience less evaporation in the vadose zone and more rapid mixing of stormwater and existing groundwater.…”

Section: Surface Physical Processes Impact Quality Of Stormwater Rech...mentioning

confidence: 99%

“…The chemistry of recharge water will influence groundwater quality. Roadside studies have observed increasing aquifer salinity, measured as either Cl, Na, or conductivity, as deicer‐impacted runoff migrates through the vadose zone and recharges the water table (Baraza & Hasenmueller, 2021; Daley et al., 2009; Herb et al., 2017; Rivett et al., 2016; Robinson & Hasenmueller, 2017). Seasonal trends in stormwater quality will affect water–matrix reactions in shallow aquifers, including mobilization of metals (Amrhein et al., 1992; Granato et al., 1995) and other contaminants such as radionuclides (Andres & McQuiggan, 2019; Bolton, 2000; McNaboe et al., 2017).…”

Section: Introductionmentioning

confidence: 99%

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Stormwater drives seasonal geochemical processes beneath an infiltration basin

et al. 2022

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Deicing salt is an important component of road safety during winter storms.Stormwater infiltration best management practices aim to prevent the salt from polluting streams and waterways, but this may shift pollutants to groundwater resources. In response to limited field studies investigating groundwater quality impacts caused by input of salt from stormwater infiltration best management practices, we monitored water levels and quality of groundwater at various depths in an unconfined aquifer around a stormwater infiltration basin using in situ sensors coupled with grab sampling. Our observations revealed differences in groundwater chemistry with depth in the aquifer and processes that were driven by the seasonal changes in the chemistry of stormwater (salt-impacted in winter and fresh in non-winter) recharging the aquifer. Water-matrix interactions in the vadose zone beneath the basin affected the transport of sodium (Na) into groundwater following non-winter recharge. Sodium movement through the aquifer was delayed relative to chloride (Cl), indicating a longer residence time of Na in the vadose zone. Radium (Ra) concentrations were correlated with Cl concentrations, suggesting salt-impacted recharge caused desorption of Ra into groundwater because of increased salinity. Stormwater-influenced groundwater followed a preferential flow path due to heterogeneity of the aquifer materials, and water chemistry varied with time and location along the flow path. These results highlight the importance of well screen length, placement and depth, and frequency of observations when designing a monitoring network.

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Section: Surface Physical Processes Impact Quality Of Stormwater Rech...contrasting

confidence: 99%

Section: Stormwater Quality Influences Ion Exchange and Ra Mobilizationsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Section: Surface Physical Processes Impact Quality Of Stormwater Rech...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Stormwater drives seasonal geochemical processes beneath an infiltration basin

et al. 2022

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The slow and steady salinization of Sparkling Lake, Wisconsin

Dugan

Rock

2021

Limnol Oceanogr Letters

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Even in rural areas, groundwater-fed lakes may be at high risk for slow, long-term salinization depending on groundwater flow paths. We use 40 years of monitoring data from Sparkling Lake, Wisconsin to show that the slow steady rise in chloride is the result of terrestrial retention of road salt. The enormity of chloride that resides on the landscape has slowed surface water impairment, but also will delay any recovery in the near term.

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