Philip T. Harte, P.G.
Philip Harte is a Research Hydrologist in the New England Water Science Center.
Philip's research incorporates the development of novel tools and methods to address important societal questions related to fate and transport of contaminants in complex groundwater systems to help safeguard our natural resources. He focuses on the study of groundwater flow and contaminant transport in natural and remediated settings with complex, heterogeneous formations. Experience includes over 30 years of work on the national and international arena studying the occurrence, distribution, and fate of natural and anthropogenic contamination problems. Research includes the development of new tools and methods that provide new insight into contaminant occurrence. An important component of Philip's work is the discovery of new findings that results from the unique linkage between the study of subsurface physical flow processes and water chemistry. This work requires multidiscipline application and comprehensive understanding of groundwater hydraulics, geophysics, and geochemistry.
Science and Products
Mapping of road-salt-contaminated groundwater discharge and estimation of chloride load to a small stream in southern New Hampshire, USA
Measured river leakages using conventional streamflow techniques: The case of Souhegan River, New Hampshire, USA
Framework for Evaluating Water Quality of the New England Crystalline Rock Aquifers
The effect of terrace geology on ground-water movement and on the interaction of ground water and surface water on a mountainside near Mirror Lake, New Hampshire, USA
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
Simulation of solute transport across low-permeability barrier walls
Results of a monitoring program of continuous water levels and physical water properties at the Operable Unit 1 area of the Savage Municipal Well Superfund site, Milford, New Hampshire, water years 2000-03
Geology and preliminary hydrogeologic characterization of the cell-house site, Berlin, New Hampshire, 2003-04
Simulation of solute transport of tetrachloroethylene in ground water of the glacial-drift aquifer at the Savage Municipal Well Superfund Site, Milford, New Hampshire, 1960-2000
Simulating solute transport across horizontal-flow barriers using the MODFLOW ground-water transport process
Comparison of temporal trends in VOCs as measured with PDB samplers and low-flow sampling methods
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Mapping of road-salt-contaminated groundwater discharge and estimation of chloride load to a small stream in southern New Hampshire, USA
Concentrations of chloride in excess of State of New Hampshire water-quality standards (230 mg/l) have been measured in watersheds adjacent to an interstate highway (I-93) in southern New Hampshire. A proposed widening plan for I-93 has raised concerns over further increases in chloride. As part of this effort, road-salt-contaminated groundwater discharge was mapped with terrain electrical conductAuthorsP. T. Harte, P.R. TrowbridgeMeasured river leakages using conventional streamflow techniques: The case of Souhegan River, New Hampshire, USA
Multiple streamflow measurements were made at coupled discharge measurement stations to quantify rates of aquifer recharge and discharge on two reaches of the Souhegan River, New Hampshire, USA, flowing within a glacial-drift river-valley aquifer. The reaches included a predominantly losing (aquifer recharge) reach and a variable (aquifer recharge and discharge) reach located downstream of the forAuthorsP. T. Harte, R.G. KiahFramework for Evaluating Water Quality of the New England Crystalline Rock Aquifers
Little information exists on regional ground-water-quality patterns for the New England crystalline rock aquifers (NECRA). A systematic approach to facilitate regional evaluation is needed for several reasons. First, the NECRA are vulnerable to anthropogenic and natural contaminants such as methyl tert-butyl ether (MTBE), arsenic, and radon gas. Second, the physical characteristics of the aquifersAuthorsPhilip T. Harte, Gilpin R. Robinson, Joseph D. Ayotte, Sarah M. FlanaganThe effect of terrace geology on ground-water movement and on the interaction of ground water and surface water on a mountainside near Mirror Lake, New Hampshire, USA
The west watershed of Mirror Lake in the White Mountains of New Hampshire contains several terraces that are at different altitudes and have different geologic compositions. The lowest terrace (FSE) has 5 m of sand overlying 9 m of till. The two next successively higher terraces (FS2 and FS1) consist entirely of sand and have maximum thicknesses of about 7 m. A fourth, and highest, terrace (FS3) lAuthorsT. C. Winter, D.C. Buso, P.C. Shattuck, P. T. Harte, D. A. Vroblesky, D.J. GoodeEffects 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
The Savage Municipal Well Superfund site in the Town of Milford, N.H., is underlain by a 0.5-square mile plume of volatile organic compounds (VOCs), mostly tetrachloroethylene (PCE). The plume occurs mostly within a highly transmissive sand and gravel layer, but also extends into underlying till and bedrock. The plume has been divided into two areas called Operable Unit 1 (OU1), which contains thAuthorsPhilip T. HarteSimulation of solute transport across low-permeability barrier walls
Low-permeability, non-reactive barrier walls are often used to contain contaminants in an aquifer. Rates of solute transport through such barriers are typically many orders of magnitude slower than rates through the aquifer. Nevertheless, the success of remedial actions may be sensitive to these low rates of transport. Two numerical simulation methods for representing low-permeability barriers inAuthorsP. T. Harte, Leonard F. Konikow, G.Z. HornbergerResults of a monitoring program of continuous water levels and physical water properties at the Operable Unit 1 area of the Savage Municipal Well Superfund site, Milford, New Hampshire, water years 2000-03
The Milford-Souhegan glacial-drift (MSGD) aquifer, in south-central New Hampshire, is an important source of industrial, commercial, and domestic water. The MSGD aquifer was also an important source of drinking water for the town of Milford until it was found to contain high concentrations of volatile organic compounds (VOCs) in the Savage and Keyes municipal-supply wells in the early 1980s. A VOAuthorsPhilip T. HarteGeology and preliminary hydrogeologic characterization of the cell-house site, Berlin, New Hampshire, 2003-04
At the cell-house site, thin, generally less than 20-foot thick overburden, consisting of till and demolition materials, overlies fractured crystalline bedrock. Bedrock at the site consists of gneiss with thin discontinuous lenses of chlorite schist and discontinuous tabular pegmatite. Two distinct fracture domains, with principal trends to the west and northwest, and to the north, overlap near thAuthorsJames R. Degnan, Stewart F. Clark, Philip T. Harte, Thomas J. MackSimulation of solute transport of tetrachloroethylene in ground water of the glacial-drift aquifer at the Savage Municipal Well Superfund Site, Milford, New Hampshire, 1960-2000
The Savage Municipal Well Superfund site, named after the former municipal water-supply well for the town of Milford, is underlain by a 0.5-square mile plume of volatile organic compounds (VOCs), primarily tetrachloroethylene (PCE). The plume occurs mostly within a highly transmissive sand-and-gravel unit, but also extends to an underlying till and bedrock unit. The plume logistically is divided iAuthorsPhilip T. HarteSimulating solute transport across horizontal-flow barriers using the MODFLOW ground-water transport process
No abstract available.AuthorsG.Z. Hornberger, Leonard F. Konikow, P. T. HarteComparison of temporal trends in VOCs as measured with PDB samplers and low-flow sampling methods
Analysis of temporal trends in tetrachloroethylene (PCE) concentration determined by two sample techniques showed that passive diffusion bag (pdb) samplers adequately sample the large variation in PCE concentrations at the site. The slopes of the temporal trends in concentrations were comparable between the two techniques, and the pdb sample concentration generally reflected the instantaneous concAuthorsP. T. Harte - Software