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Article

Hydraulic Conductivity Estimation Using Low-Flow Purging Data Elaboration in Contaminated Sites

Department of Civil, Building and Environmental Engineering (DICEA), Sapienza University of Rome, 00185 Rome, Italy
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Author to whom correspondence should be addressed.
Water 2020, 12(3), 898; https://doi.org/10.3390/w12030898
Received: 6 February 2020 / Revised: 16 March 2020 / Accepted: 18 March 2020 / Published: 22 March 2020
(This article belongs to the Special Issue Advances in Groundwater and Surface Water Monitoring and Management)
Hydrogeological characterization is required when investigating contaminated sites, and hydraulic conductivity is an important parameter that needs to be estimated. Before groundwater sampling, well water level values are measured during low-flow purging to check the correct driving of the activity. However, these data are generally considered only as an indicator of an adequate well purging. In this paper, water levels and purging flow rates were considered to estimate hydraulic conductivity values in an alluvial aquifer, and the obtained results were compared with traditional hydraulic conductivity test results carried on in the same area. To test the applicability of this method, data coming from 59 wells located in the alluvial aquifer of Malagrotta waste disposal site, a large area of 160 ha near Rome, were analyzed and processed. Hydraulic conductivity values were estimated by applying the Dupuit’s hypothesis for steady-state radial flow in an unconfined aquifer, as these are the hydraulic conditions in pumping wells for remediation purposes. This study aims to show that low-flow purging procedures in monitoring wells—carried out before sampling for groundwater characterization—represent an easy and inexpensive method for soil hydraulic conductivity estimation with good feasibility, if correctly carried on. View Full-Text
Keywords: hydraulic conductivity; alluvial deposit; contaminated sites; low-flow purging; groundwater; landfill hydraulic conductivity; alluvial deposit; contaminated sites; low-flow purging; groundwater; landfill
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MDPI and ACS Style

De Filippi, F.M.; Iacurto, S.; Ferranti, F.; Sappa, G. Hydraulic Conductivity Estimation Using Low-Flow Purging Data Elaboration in Contaminated Sites. Water 2020, 12, 898. https://doi.org/10.3390/w12030898

AMA Style

De Filippi FM, Iacurto S, Ferranti F, Sappa G. Hydraulic Conductivity Estimation Using Low-Flow Purging Data Elaboration in Contaminated Sites. Water. 2020; 12(3):898. https://doi.org/10.3390/w12030898

Chicago/Turabian Style

De Filippi, Francesco M., Silvia Iacurto, Flavia Ferranti, and Giuseppe Sappa. 2020. "Hydraulic Conductivity Estimation Using Low-Flow Purging Data Elaboration in Contaminated Sites" Water 12, no. 3: 898. https://doi.org/10.3390/w12030898

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