Commercial Property, Acton, MA
Performed a 21E Assessment, Preliminary Assessment and phased field sampling investigations for a 60-acre site contaminated by a leaking underground tank and prior waste oil disposal practices. Designed low cost clean-up and remediation plan that produced results below action levels in a very short period of time and led to a Waiver of Approvals by DEP.

Contaminant Source Investigation, Water Supply District, Acton, MA
Conducted hydrogeological study that traced contaminants of three municipal water supply wells along a 25 to 30 year flow path back to the probable source areas at a Superfund Site. Work was instrumental in the settlement of a 3.2 million dollar lawsuit for treatment of the ground water supply sources.

Technical Advisor to Citizens Groups Monitoring Superfund Site Investigations, Woburn and Acton, MA
Recipient of three EPA technical assistance grants for professional assistance to citizens' groups overseeing characterization and remediation of extensive sites contaminated by a wide range of waste materials and sludge at three major Superfund sites.

Former Farm Property, North Reading, MA
Investigation of soil and ground water conditions on a 44-acre parcel of land on the banks of the Ipswich River which was proposed for residential and recreational development. Based upon a historical, municipal and state file review, P&S investigated surficial soil conditions for levels of pesticide use. Subsurface investigation s of soil and groundwater quality were also conducted to assess impact of known episodes of dumping on the property.

New Hampshire DES Division of Water Supply and Pollution Control
On-site chemical reconnaissance using soil gas and MicroWell technology along with on-site analysis for rapid assessment of contaminant conditions at several sites under investigation by the state. P&S has been able to quickly assess the extent and level of contamination of plumes at sites under investigation by the state.

Gasoline Station Assessments, Long Island, NY
Installation of MicroWells and on-site GC analyses of ground water samples to delineate plumes of gasoline at over 30 sites, some threatening public water supplies

Property Purchase, Littleton, MA
Site assessment of a former farm property, including sampling and analysis of surficial and subsurface soils and ground water. Developed plan and supervised removal of contaminated soils resulting in a Waiver of Approvals by DEP for clean up actions.

National Park Site, Wellfleet, MA
Ground water study at sensitive pond-side locations accessed by means of a boat to avoid damage to a sensitive environment. Installations by P&S's non-motorized K202 rig of MicroWells in clusters for use as piezometers to study ground water flow conditions and long term water quality.

Massachusetts DEP SARRS II Subcontractor, Various Massachusetts Sites
Perform subsurface and mobile laboratory investigations to delineate volatile organic contaminants in soil atmosphere, soil and ground water at sites under investigation by DEP. Investigations have ranged from gasoline station site assessments to ground water studies of threats to municipal water supply wells.

Industrial Property, NH
Installed conventional monitoring wells and MicroWells to assess the horizontal and vertical reach of extensive ground water and soil contamination caused by long term disposal of VOC. With New Hampshire DES approval, P&S set up a ground water remediation system as well as a Vapor Extraction System involving MicroWells screened in the vadose zone. Pilot testing of the treatment system showed that all VOC levels in the water prior to discharge were below EPA discharge standards.

Investigation of Threat to Municipal Well, Barnstable, MA
Confirmation of industrial disposal area as source of a narrow plume of contamination that extended over a distance of 2,400 feet using MicroWells and on-site GC analysis. P&S advanced MicroWell technology capabilities in order to rapidly penetrate deposits of cobbles and reach depths to 70 feet BGS.

Additional Recent Environmental Projects
Foster Wheeler Environmental Corp.: sediment sampling beneath New Bedford Harbor
Roux Associates: soil gas and ground water investigation at Superfund Site, Woburn MA
Foster Wheeler Environmental Corp.: soil sampling at Portsmouth Naval Shipyard
Harding ESE: ground water investigations at the former Fort Devens, MA
Hollingsworth and Vose Co.: landfill monitoring and assessment
USGS: environmental studies of the Walden Pond sanctuary
Jacobs Engineering Group: plume dilineation beneath ponds at Otis Air National Guard Base

EPA Technical Assistant Grant Contracts
W.R. Grace, Acton, Massachusetts
Wells G&H, Woburn, Massachusetts
Industriplex Site, Woburn, Massachusetts
Nuclear Metals, Concord, Massachusetts