Chemistry

Neptune and Company, Inc. does not perform chemical analyses, but we help you set up your projects and evaluate the data to make informed decisions from the analytical results.  We apply our chemistry expertise to identify and quantify risks to humans and the environment, to establish baseline conditions and ongoing permit requirements, and to establish and facilitate process operations.  Neptune can provide you with a common-sense approach to developing and implementing your projects and ongoing operations.

Range of Experience

  • Hydraulic fracturing activities in the Marcellus, Bakken, Barnett, and Raton Basin.  
  • Guidance for assessing the risk from asbestos fibers.  
  • Modeling radionuclide transport as required for low-level waste disposal Performance Assessments.  
  • Inorganic and organic sampling, analytical plans, and QA activities for aqueous, solid, and air matrices for numerous studies and investigations.  
  • Mine-related issues, including delineation of chemicals of concern.

Sampling and Analysis Planning including Quality Assurance Project Plans:  We develop SAPs that follow proven planning methods including the Data Quality Objectives process.  We ensure there is a reason (based on the Conceptual Site Model for instance) and associated measurement objective developed for each measurement taken in the field and laboratory.  We have developed and provided consultation on hundreds of project plans that including organic, inorganic, and radionuclide analytes.  We develop plans that include the quality control and quality assurance that matches your requirements.  We can specify chain of custody, field and instrument records, analytical data and QA requirements, as well as training and competency requirements for the acquisition of defensible data.

Complete Laboratory Program coordination, from design through implementation and oversight.  We understand the laboratory system and can ensure you are receiving the analytical service and data delivery to meet your needs.  Electronic Data Delivery format is critical to streamlining your operation and ensuring you can quickly evaluate the usability of the data and incorporate it into your operations and decisions.  We also perform Laboratory and Field AuditsThese third-party audits are used to evaluate laboratory capabilities, including new methods or specialized analyses, or as ongoing QA to ensure that you are receiving the necessary analytical services for your project or operation.  Field audits are critical in assuring representative data is collected and handled correctly prior to analysis.  We also have experience in providing field audits of new technologies and demonstrations associated with contaminant control and remediation.

Data Validation and Verification, and in particular Focused Data Validation and Usability Assessment.  We provide third-party validation and can then evaluate the field and laboratory QA/QC results in conjunction with analytical data, including field conditions such as pH and redox chemistry, to understand where failed QC impacts the data.  This can be especially important in human health and ecological risk assessment, where redox conditions may preclude risk even when metals are present.  The results obtained for total and hexavalent chromium are one example where this is applied.  Our chemists have extensive background in routine and innovative methods, including MS/MS techniques.  We are particularly adept at developing validation steps for these non-routine methods and have significant experience with analytical techniques used for hydraulic fracturing studies, including RSK 175, glycols, and non-target species.  We provide expertise in data usability, where the initial validation may have resulted in qualification.  The extent and impact of this qualification can be evaluated and communicated, and in many instances contractually noncompliant data are usable within reasonable limits.

Analytical Method Recommendations and Evaluations.  We have experience beyond the routine environmental laboratory methods and can help you evaluate new approaches including method development.  We work closely with our in-house statisticians to develop Round Robin studies.

Fate and Transport Modeling.  Neptune has provided chemical fate and transport expertise for 20 years, via transport modeling and speciation analyses.  We link the conceptual site model with the hydrogeologic conditions to develop mathematical and probabilistic models of contaminant transport.  Using geochemical codes (Visual MINTEQ, PHREEQC, GWB) linked to transport codes, we evaluate the modeled behavior and transport of metals, elements, and  radionuclides (e.g. uranium, thorium, radium, daughter products).

Forensic Evaluations. Forensic evaluation is a logical extension of our expertise in data validation and usability coupled with our understanding of contaminant fate and transport.  We have experience evaluating chemical, physical, and historical information to arrive at defensive conclusions associated with contaminants in the environment.  This expertise includes the full spectrum of environmental issues including organics (petroleum products and fracking related compounds, PCBs, chlorinated solvents), radionuclides (secular equilibrium, man-made rads) and asbestos.  We are well versed in chromatography, spectroscopy and mass spectrometry, including tandem and specialized speciation techniques and can apply these to forensic investigations.