Integrated Site Investigation Solutions Projects
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Characterization of Rock Environments - Discrete Fracture Network ApproachTM
Chatsworth, California (2008 - 2009): At a former aerospace/nuclear research facility, Stone completed COREDFN TM analysis on four core holes at depths up to 1,500 feet below ground surface. Samples were collected to determine the extent of NAPL diffusion into the rock matrix in an interbedded sandstone/shale fractured bedrock aquifer. Samples were also collected for analysis of physical properties, microbial, and chloride content.
South Plainfield, New Jersey (2009): Stone conducted high-resolution rock core sampling (COREDFN TM) and laboratory analysis (MobiLabTM ) at a Superfund site in South Plainfield, NJ. The purpose of this work was to assess the distribution both spatially and partitioning between mobile and immobile porosity (fracture vs. matrix) of VOCs and PCBs within the bedrock at several locations around the site. A total of 824 linear feet of rock core was retrieved from the three boring locations over the course of five weeks of sampling. More than 500 rock samples were collected for onsite VOC analysis using proprietary crushing and field preservation methods. Using these high-resolution, high-efficiency sampling and analysis techniques, the project team was able to quickly determine the distribution of VOC contamination within the bedrock and guide the field investigation effort accordingly.
Binghamton, New York (2009): Stone completed COREDFN TM analysis on six shallow core holes in a dolostone aquifer to determine the extent of contamination at a former shooting range. On a separate mobilization, Stone completed COREDFN TM analysis on two core holes and assisted in a pilot study designed to test the potential feasibility of a new remediation method that involves driving contaminants from fractured bedrock using steam injection. Samples were collected and processed using the COREDFN TM methodology, then placed in a HAF oven. Later, the samples were removed from the oven at 24, 48, 72, and 120-hour intervals. All samples were then tested for a variety of contaminants at Stone's Montpelier lab to determine the degree of effectiveness of the treatment.
Rochester, New York (2008 - 2010): At a former manufacturing facility, Stone performed COREDFN TM analysis on samples from several core holes to depths of 160 feet bgs in a fractured/jointed dolostone bedrock aquifer. After encountering a natural gas-bearing shale unit at depths around 150 feet bgs, measures were taken to mitigate hazardous working conditions.
Also:
Waltham, MA
Waterloo Advanced Profiling SystemTM
Lowell, Massachusetts (2002 - Ongoing): At a Superfund site, Stone performed direct push soil coring, WaterlooAPS TM groundwater profiling, and MobiLabTM analytical services as part of a high-resolution, real-time investigation of a multi-component NAPL source area at the site. The source area covered four acres, with a complex mixture of NAPL. Since 2002, Stone and its client have teamed to provide long-term operation and maintenance of the extraction and treatment system, which includes: thirty-one extraction wells, phase separation, metals removal, pressure filtration, air stripping, thermal oxidation for off-gas treatment, and a filter press system for sludge handling. A US EPA Remediation Systems Evaluation (RSE) gave the project high ratings for cost effectiveness and proactive optimization. Stone was instrumental in developing the Management of Migration approach for the evaluation of the contaminant plume and remedial action that is still used today.
Crystal Springs, Mississippi (2008): Over three separate mobilizations, Stone completed several WaterlooAPS TM groundwater profiles and collected samples for VOC analysis at an electrical transformer manufacturing facility. Profiles were located onsite and inside the plant building as well as residential and commercial areas in the surrounding area.
Hopewell, New Jersey (2006, 2008): Stone performed vertical groundwater profiling using WaterlooAPS TM at a former explosives/ energetics manufacturing facility. Stone collected 40 groundwater samples at 21 locations to a maximum depth of 120 feet below ground surface (bgs) and analyzed samples for nitroglycerin (NG), trinitrotoluene (TNT), dinitrotoluene (DNT) and cyclotrimethylene trinitramine contamination.
Geelong, Australia (2008 - 2009): Stone mobilized two WaterlooAPS TM systems to a large oil refinery. We completed more than 100 groundwater profiles at depths up to 18 meters below ground surface (bgs) to determine if the refinery's groundwater interception trench was functioning as designed. Samples were analyzed on site to determine presence and concentrations of LNAPLs and petroleum products. Work was completed over an 11-week period.
New Haven, England (2009): Stone completed 17 WaterlooAPS TM groundwater profiles to depths of 30 meters and collected samples for VOC analysis at an operational pen manufacturing facility. Profiles were located both around the facility perimeter and inside the production facility. To complete the profiles, Stone staff worked through the weekend and switched between profiling from vans to a mobile setup for indoor work.
Manchester, England (2007): Stone completed 30 WaterlooAPS TM groundwater profiles to depths of 25 meters bgs. The investigation was in response to rebound of contaminants in monitoring wells after approximately £2 million were spent on remediation based on monitoring well data. DNAPL was observed in one groundwater sample and was the only aqueous solution sampled at a second location.
Montbrison, France (2008): Stone completed 11 WaterlooAPS TM groundwater profiles at depths up to 10 meters bgs and collected samples for VOC analysis. Profiles were located offsite of an operational manufacturing facility. The geology was mostly low permeability silts/clays with small (6" or less) layers of sand which could be sampled. A second mobilization provided MobiLabTM services for subsequent soil sampling.
Seelze, Germany (2008): At an operational manufacturing facility, Stone completed more than 60 WaterlooAPS TM groundwater profiles at depths up to 28 meters bgs and collected samples for VOC analysis.
Berlin, Germany (2005): Stone conducted two separate mobilizations of profiling and lab at an active manufacturing facility. Profiles demonstrated that the contamination plume was not originating from the site under investigation but from another facility located across the street. Previous conclusions had been based on a very few monitoring wells.
Monthey, Switzerland (2009): Stone completed 29 WaterlooAPS TM groundwater profiles to depths of 25 meters bgs and collected samples for VOC analysis. The site was a landfill associated with an active chemical plant. The profiles were conducted to delineate the extent of the landfill so that it could be excavated. The excavation was expected to take several years due to the volume of material that was to be removed.
Montrose, Scotland (2005 - 2006): Stone conducted two separate mobilizations totaling eight weeks in November 2005 and spring 2006. This was Stone's first use of the WaterlooAPS TM and MobiLabTM in Europe. Two profilers and a mobile lab were deployed to determine the extent and source of contamination at an active Glaxo-SmithKline facility that was to be shut down but ultimately was not.
Hicksville, New York (2003 - 2007): Profiling on Long Island at a former electronics manufacturing plant at 55 locations totaling 19,555 linear feet of aquifer. Collected 1,600 groundwater samples at 10-foot vertical intervals to depths of up to 500 feet, and analyzed them in our onsite laboratory for target volatile organic compounds, chlorine/chloride, and ferric/ferrous iron.
Wellington, Kansas (2001): Profiling using multiple crews coupled with onsite laboratory analysis to track a carbon tetrachloride plume through complex sand channels within a clay sea bed matrix.
Milford, New Hampshire (2001): At the Savage Well Superfund site, groundwater quality profiling to depths of 90 feet to assess remedial effectiveness.
Wellesley, Massachusetts (2001): Groundwater quality profiling coupled with onsite analysis to determine the locations of source material for a dissolved chromium plume.
Florham Park, New Jersey (2001): Direct push profiling in a wetland (under a permit with NJDEP), coupled with onsite sample analysis, to identify source areas not previously found.
Wayland, Massachusetts (2002): Site investigations for petroleum cleanup (50 projects). Completed 56 profiles of water quality and stratigraphy to depths up to 180 feet at a former electronics manufacturing site and provided a GC/MS onsite laboratory to analyze some of the samples collected as part of an extensive investigation of chlorinated solvent contamination.
Also:
Waltham, MA
Taunton, MA
Watertown, NY
Humboldt, TN
Lodz, Poland
MobiLabTM
Watertown, New York (2009): Stone investigated a dissolved phase jet fuel plume that was associated with an aviation refueling center at a military facility and had migrated away from the facility. Stone used the WaterlooAPS TM groundwater profiling in conjunction with the MobiLabTM field laboratory to gather real-time hydrostatigraphic data about the aquifer and rapidly delineate the nature and extent of the dissolved-phase plume. The work was conducted in extremely harsh winter conditions which required significant proactive procedures to keep the sampling equipment from freezing and to keep the investigation going. The end result of the investigation was a detailed vertical and horizontal understanding of the plume's position in the aquifer in the downgradient portions of the site. Data collected by Stone was also used to locate the additional well clusters to support an existing monitoring well network.
Lodz, Poland (2009): Stone mobilized MobiLabTM and WaterlooAPS TM equipment to Poland and provided MobiLabTM services at a manufacturing facility. Stone then completed 16 WaterlooAPS TM groundwater profiles to depths of 20 meters bgs. Many of the profiling locations were located in very tight spaces inside buildings.
Hicksville, New York (2003 - 2007): Established an onsite laboratory on Long Island to analyze soils for targeting volatile organic compounds by gas chromatography using solid phase microextraction. Fifteen thousand samples were analyzed at rates as high as 120 samples per day using three Hewlett Packard 5890 Series 2 gas chromatographs. Also provided analysis for metals in soils by x-ray fluorescence.
Taunton, Massachusetts (2002): At the St. Germain Drum site, initial profiling investigation and onsite laboratory analysis into the source area at a newly listed Superfund site.
Also:
Lowell, MA
South Plainfield, NJ
Berlin, Germany
Montrose, Scotland
Wellesley, MA
Membrane Interface Probe
Waltham, Massachusetts (2008 - 2009): Over several mobilizations, Stone conducted more than 60 WaterlooAPS TM groundwater profiles, more than 100 MIP holes, and COREDFN TM analysis at a former manufacturing facility.
Humboldt, Tennessee (2009 - Ongoing): At a former electronics manufacturing facility, Stone completed more than 20 MIP holes and more than 15 WaterlooAPS TM groundwater profiles to depths of 130 feet bgs in various locations, both on and off site. A DNAPL plume was delineated and shown to be more extensive than determined by the existing monitoring well field.
Troy and Clawson, Michigan (2004): At the former Davis Manufacturing Plant, MIP services probing 35 holes to approximately 20 feet to determine the presence of chlorinated solvents.
Milwaukee, Wisonsin (2004): At a former manufacturing facility, 38 MIP explorations totaling 1,550 linear feet in nine days, including many holes inside the former plant. MIP data included chromatographic speciation of the volatile organic compounds present in the subsurface. Provided 3-D data interpolation and visualization services to help the client present the data to his client for decision making purposes.
The Triad Approach
Springfield, Vermont (2010): Stone performed a Phase I Environmental Site Assessment (ESA) and a Triad Phase II ESA of a former foundry facility in Springfield, Vermont under a US EPA Brownfield Grant-funded contract. The Phase I ESA identified that past uses on the property included foundering, metal machining, electroplating, and metal finishing. The Phase II ESA characterized metals and PAH contamination in unsaturated zone soils and PCB contamination within an historic site building that is slated for redevelopment as an athletic field house.
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Last modified: August 11, 2010.