Effects of a remedial system and its operation on volatile organic compound-contaminated ground water, Operable Unit 1, Savage Municipal Well Superfund Site, Milford, New Hampshire, 1998-2004

Evaluation of modeling for groundwater flow and tetrachloroethylene transport in the Milford-Souhegan glacial-drift aquifer at the Savage Municipal Well Superfund site, Milford, New Hampshire, 2011

“…However, unless a low rate of dispersivity was assigned to the barrier and the transport equation was reformulated, unrealistically high rates of dispersion across the barrier occurred during simulations (Harte and others, 2006). Harte (2006) showed that it was necessary to increase the flow across the barrier by increasing the hydraulic conductivity of the barrier for layer 5 in the BM to offset increased extraction inside the barrier during a simulated period from 2003 to 2006. Therefore, the hydraulic conductivity of the barrier in layer 5 of the ROM differs from the increased hydraulic conductivity specified in the BM.…”

“…Groundwater flow and transport modeling of the Savage Municipal Well Superfund (Savage Superfund) site was used to design the operable unit 1 1 (OU1) and operable unit 2 2 (OU2) remedial systems for treating the tetrachloroethylene (PCE) plume in the glacial sand and gravel deposits and underlying basal till, hereafter termed the Milford-Souhegan glacial-drift (MSGD) aquifer (Harte, 2004;Harte, 2006). Operable units define areas of contaminant concern within the Savage Superfund site.…”

“…Operable units define areas of contaminant concern within the Savage Superfund site. A detailed description of OU1 can be found in Harte (2006). Currently (2012), overall performance of the remedial system is being tracked through numerical modeling of groundwater flow and solute transport of PCE by comparing temporal trends in model-computed and observed PCE concentrations and mass (Gradient Corp., 2009).…”

Hydrostratigraphic mapping of the Milford-Souhegan glacial drift aquifer, and effects of hydrostratigraphy on transport of PCE, Operable Unit 1, Savage Superfund Site, Milford, New Hampshire

“…The barrier was designed to penetrate at least 3 ft into the basal till, but in many locations this minimum depth was exceeded. An analysis of barrier wall depth is provided in Harte (2006). Various injection and extraction wells ( fig.…”

Bedrock geology and outcrop fracture trends in the vicinity of the Savage Municipal Well Superfund site, Milford, New Hampshire

“…Monitoring and remediation activities continue today. Most wells that were drilled into the underlying fractured crystalline bedrock as part of the monitoring network were screened in the upper 50 ft (15 m) of bedrock while a few others were deep bedrock wells (Harte, 2006;Weston, Inc., 2012; some shown in fig. 1).…”