| Abstract: | Saline water from a storm surge can flow down storm-damaged submerged water supply wells and contaminate boreholes and surrounding aquifers. Using data from conventional purging techniques, aquifer test response analysis, chemical analysis, and regression analysis of chloride/silica (Cl/Si) ratio, equations were derived to estimate the volume of saline water intrusion into a well and a porous media aquifer, the volume of water needed to purge a well shortly following an intrusion event, and the volume of water needed after delay of several or more months, when the saline plume has expanded. Purging time required is a function of volume of water and pumping rate. The study site well is located within a shoreline community of Lake Pontchartrain, St. Tammany Parish, in southeastern Louisiana, United States, which was impacted by two hurricane storm surges and had neither been rehabilitated nor chlorinated prior to our study. Chemical analysis of water samples in fall 2005 and purging of well and aquifer in June 6, 2006, indicated saline water had intruded the well in 2005 and the well and aquifer in 2006. The volume of water needed to purge the study well was approximately 200 casing volumes, which is significantly greater than conventionally used during collection of water samples for water quality analyses. ?? 2007 National Ground Water Association. |
| Genre: | Article |
| ProdID: | 70033680 |
| Citation Author: | Carlson, D. A.; Van Biersel, T. P.; Milner, L. R. |
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| Citation End Page: | 79 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Ground Water |
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| Citation Number Of Pages: | 11 |
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| Citation Search Results Text: | Storm-damaged saline-contaminated boreholes as a means of aquifer contamination; 2008; Article; Journal; Ground Water; Carlson, D. A.; Van Biersel, T. P.; Milner, L. R. |
| Citation Start Page: | 69 |
| Citation Volume: | 46 |
| Citation Year: | 2008 |
| Type: | citation/reference |
| Text: | Storm-damaged saline-contaminated boreholes as a means of aquifer contamination; 2008; Article; Journal; Ground Water; Carlson, D. A.; Van Biersel, T. P.; Milner, L. R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1111/j.1745-6584.2007.00380.x |
| Date Other: | Tue, 1 Jan 2008 00:00 -0600 |
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