2005
DOI: 10.1007/s10661-005-1682-9
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Effect of Setback Distance on Ability of Gravel Trenches to Intercept Contaminated Groundwater

Abstract: Computer simulations tested the ability of gravel interceptor trenches to capture a plume of contaminated groundwater. The plume had a maximum length and width of 87 and 19 m, respectively. In alternate simulations, one-meter wide trenches were located 5, 10, 20, and 50 m downgradient of the plume. A minimum trench length and time required to capture the plume was determined for each location (setback). The plume was considered captured if it passed entirely through a trench. A 21 m-long trench captured the pl… Show more

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Cited by 5 publications
(6 citation statements)
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“…One of the simplest and most effective configurations for a passive interceptor trench is a linear trench, installed perpendicular to groundwater flow, spanning the maximum width of a hydraulically up gradient contaminant plume (Hudak, 2005). The pumping trench is backfilled with sand or gravel (McMurtry and Elton, 1985), and groundwater that collects in the trench is pumped to a treatment plant.…”
Section: Pumping Trench Groundwater Controlmentioning
confidence: 99%
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“…One of the simplest and most effective configurations for a passive interceptor trench is a linear trench, installed perpendicular to groundwater flow, spanning the maximum width of a hydraulically up gradient contaminant plume (Hudak, 2005). The pumping trench is backfilled with sand or gravel (McMurtry and Elton, 1985), and groundwater that collects in the trench is pumped to a treatment plant.…”
Section: Pumping Trench Groundwater Controlmentioning
confidence: 99%
“…Avci (1992) determined that the use of simulations and models were a quick way to establish initial interceptor trench effectiveness using assumptions regarding boundary conditions, but field tests are required to determine how actual boundary conditions will influence the interceptor trench. Hudak (2005) looked at the most effective size and set back distance of an interceptor trench. The further the interceptor trench is from the contaminated area, the wider the trench size and longer the time period necessary to capture the contaminant plume.…”
Section: Pumping Trench Groundwater Controlmentioning
confidence: 99%
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“…Such effects may enlarge a plume, causing mass to migrate around an undersized interceptor structure. Others have simulated mass transport or geochemical processes near interceptor structures Hudak, 2005;Mayer et al, 2001). This study builds upon previous work, using a mass transport model to investigate potential errors in designing hanging funnel-and-gate structures with particle tracks.…”
Section: Introductionmentioning
confidence: 99%