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TestAmerica's Experts are ready to assist you.
Product Manager, TestAmerica
Taryn McKnight is a senior air specialist with TestAmerica. With over 10 years of environmental experience specializing in the air market, Mrs. McKnight is responsible for providing technical guidance and support to clients, agencies and industry personnel across the country. With her years of industry and project management experience, Mrs. McKnight is well versed in developing an analytical approach, as well as a quality program that ensures the necessary data quality objectives are being met. With a special focus on understanding federal and regional guidance related to Vapor Intrusion, Mrs. McKnight provides strategic support in the development of sampling and analysis plans.
Biologist/Project Manager, TestAmerica
Mr. Mike Stanaway has 28 years of experience in the environmental toxicity testing services field. Mr. Stanaway currently serves as a Biologist/Project Manager at TestAmerica Applied Sciences Laboratory (ASL) in Corvallis, Oregon. Throughout his career, Mr. Stanaway has managed several consulting projects, as well as large toxicology projects involving sediments, surface waters, soils, dredged materials, toxicity identification and toxicity reduction evaluations. He has vast experience conducting, interpreting (including statistical evaluation), and reporting acute and chronic toxicity, and bioaccumulation tests. Prior to assuming his current role, Mr. Stanaway served as a Toxicology Laboratory Manager at TestAmerica ASL.
Mr. Stanaway earned his Bachelor of Science degree from Willamette University, Salem Oregon in 1988 with a minor in Environmental Science.
· Clackamas Water Environment Short School Whole Effluent Toxicity Testing
Corporate Technical Director, TestAmerica
- Mr. Stearns has over 25 years of experience in the environmental laboratory industry including; laboratory operations, laboratory management, analytical method development, Quality Assurance, and development of specialized laboratory analyses.
As one of Test America’s Corporate Technical Directors, Mr. Stearns is responsible for the development, validation and implementation of new and modified analytical methodologies; the review of routine and non-routine analytical data for validation purposes; and for the creation of technical documents and analytical polices that are used across the Test America network. Mr. Stearns has extensive experience with organic sample analysis and reporting using methodologies found in USEPA SW-846, CLP SOM01.2, SDWA and the TO Compendium of Air Toxic methods encompassing the analysis of water, soil, sediment, and tissue samples for a wide variety of chemical contaminates including pesticide, PCBs, volatile and semi-volatile compounds.
Mr. Stearns received a Bachelor of Science Degree in Environmental Science from Johnson State College, Johnson Vermont in 1983.
Manager of Projects, TestAmerica
Erin Arasate, Manager of Projects for TestAmerica, has more than 10 years’ experience in the environmental laboratory industry. Her well rounded experience with TestAmerica includes positions in project management, information technology, customer service and analytical chemistry. In her current position, Ms. Arasate is responsible for the successful coordination and completion of initiatives and projects within TestAmerica’s Customer Service Organization, as well as training for customer service staff throughout the TestAmerica network.
Ms. Arasate earned a Bachelor of Arts in Biology and a Bachelor of Science in Environmental Studies with concentrations in Marine/Freshwater Ecology and Environmental Science from Gettysburg College in Pennsylvania.
Technical Services Director, TestAmerica Laboratories, Inc.
Raymond Risden has over 24 years of experience in the environmental testing industry, and currently holds the role of Technical Director at Test America at the Canton, Ohio laboratory.
He has held positions in laboratory management, and has extensive experience with organic methods and analysis. Over the past several years he has developed and adapted laboratory methodology in the analysis and processing of unique and uncommon matrices requiring testing for the demolition and remediation of facilities in multiple industries.
Mr. Risden earned his BS in Biology and minor in Chemistry from Walsh University North Canton, Ohio in 1992.
Corporate Director of Technical Services, TestAmerica
Eric Redman has over 30 years of experience in the environmental testing industry, specializing in the application of analytical chemistry to environmental problems. Mr. Redman is the Corporate Director of Technical Services for TestAmerica's network of laboratories in the United States. His duties include implementing technical best practices, development and improvement of analytical methods, and assisting customers with analytical challenges.
Previously, Mr. Redman served as a Laboratory Director, Sales Director, Marketing Director, and Technical Director for TestAmerica. Mr. Redman's technical expertise combined with a detailed understanding of regulatory compliance and other client requirements has driven TestAmerica's 3-fold expansion of its high-resolution GC/MS and LC/MS services. From Dioxins to PCB Congeners, Brominated Flame Retardants and other emerging contaminants, Mr. Redman has championed commercial application of state-of-the-art analytical services across a wide range of markets. He provides support for clients, regulators, and other data users regarding trace level analyses, including Dioxins/Furans, PCB Congeners, Pesticides, Endocrine Disrupting Compounds, and Emerging Contaminants. Mr. Redman has extensive experience in industrial and government programs supporting projects for the EPA, ACOE, Navy, and AFCEE.
Mr. Redman received a BS in Chemistry and Physics from California State University and a MS degree in Chemical Physics from the University of California-Riverside.
American Chemical Society
American Society for Mass Spectrometry
Trade Association for Pulp and Paper Industry of America
Mr. Redman has published articles in journals and presented papers at scientific conferences, which include:
Dr. Kesavalu 'Doss' Bagawandoss, J.D.
Laboratory Director, TestAmerica
- Dr. Doss has more than 30 years of environmental laboratory experience as a chemist, program manager, technical director, laboratory director and executive manager. He is renowned for his laboratory expertise in hydrocarbon chemistry, hydraulic fracturing and the crude by rail transportation sector. Dr. Doss participated in numerous technical committees and organizations including the GPA Technical Committee, ASTM subcommittee on Hydraulic Fracturing and several API Rail Standards committees. He has also served as chair of the EPA-TNI-NEMC shale gas exploration session for the past 5 years.
Dr. Doss received his Ph.D. in Engineering (Environmental Science) from the University of Oklahoma, a M.S. in Chemistry from Wichita State University, a B.S. in Chemistry from Loyola College, University of Madras, and a J.D. from Southern University Law Center. He is also a member of the Louisiana State Bar Association.
Technical Director, TestAmerica
Mr. Dunn has 36 years of experience in environmental testing. He has served as the Nashville laboratory Technical Director since 1996 and has been in charge of Quality Assurance. Mr. Dunn's responsibilities include method development, instrumentation evaluation/recommendations/repair, support for project management and sales/marketing, process optimization, SOP revision/development, analyst training, data review, and Operational Management of the Inorganic Chemistry Department.
Mr. Dunn also serves as one of the Technical contacts for the TestAmerica Best Practice initiative, which seeks out method and analytical improvements and assists in implementation throughout the company. He is also experienced in forensics, electronics and aerospace (metal alloys and composites).
Mr. Dunn earned his BS and MS degrees in Chemistry from Middle Tennessee State University.
American Chemical Society
Mr. Dunn has published articles in journals and presented papers at scientific conferences, which include:
Mike McGee, MS, CIH
Laboratory Director, TestAmerica
Mike McGee has 30 years of experience as an Industrial Hygienist and Industrial Hygiene Laboratory Director. His experience includes 5 years as an Industrial Hygienist for a heavy equipment manufacturer and 10 years as an Industrial Hygiene Consultant.
Mr. McGee has extensive experience in NIOSH and OSHA methodology, designing air and wipe sampling surveys, regulatory compliance and environmental laboratory methodology.
Mr. McGee has been a Certified Industrial Hygienist since 1983. He earned a BA in Biology from the University of Iowa and an MS in Public Health from the University of Massachusetts at Amherst.
American Industrial Hygiene Association
American Academy of Industrial Hygiene
Iowa-Illinois Section, American Industrial Hygiene Association
Environmental Professionals of Iowa
Iowa Groundwater Association
Certified in Industrial Hygiene
Poirier, David A. and Kenneth L Feder. Health, Safety and Archeology. Westport Connecticut: Bergin & Garvey. 2001. Chapter 9, Old Cemeteries, Arsenic, Health & Safety.
Konefes, J.L. and M.K. McGee. Old Cemeteries, Arsenic, and Health Safety. Cultural Resource Management, Vol. 19, No. 10, 1996.
McGee, Michael K., and R. Kent Oestenstad. The Effect of the Growth of Facial Hair on Protection Factors for One Model of Closed-Circuit, Pressure-Demand, Self-Contained Breathing Apparatus. Am. Ind. Hyg. Assoc. J. 44(7): 480-484 (1983).
Moore, G.S., E.J. Calabrese and M.K. McGee. Health Effects of Monochloramine in Drinking Water. J. Environ. Sci. Health A15(3) 239-258 (1980).
Senior Account Executive, TestAmerica Laboratories, Inc.
John Meade has 25 years of experience in the environmental field including sales of environmental chemical laboratory services, client services, project management, laboratory analysis, field sampling, asbestos abatement, industrial hygiene, consulting, and handling hazardous waste. Mr Meade's various positions within TestAmerica and its legacy companies have included Sales Manager, Industrial Hygienist, and Asbestos Supervisor. He has knowledge of all aspects of the environmental laboratory. He possesses excellent leadership skills and is highly skilled with internal and external customer relations.
Mr Meade has been working on International projects for the last 7 years. Currently, Mr Meade oversees two large projects in Chile and Iraq. He assisted in the set-up and operations of STL Ecuador. He has developed documents for shipping to and from over 30 countries worldwide and provides clients with key logistical support on a daily basis.
Mr. Meade is the Business Development Manager for TestAmerica's Central and International Regions. He received a BA in Anthropology from Buffalo State College in Buffalo, NY, and serves on the Board of Directors for the Air & Waste Management Association Coastal Plains Chapter.
Technical Director, TestAmerica
Larry Matko has more than 24 years of experience in the environmental testing industry, and is currently the Technical Director at TestAmerica in Pittsburgh, PA.
Mr. Matko's technical knowledge and analytical expertise allowed him to implement the Leaching Environmental Assessment Framework (LEAF) methods within TestAmerica. Methods 1313, 1314, 1315, and 1316 are new methods in SW-846 by the U.S. EPA.
Mr. Matko earned his BS degree in Chemical Engineering at Pennsylvania State University.
Dr. Mark Bruce
Corporate Technical Director
Dr. Mark Bruce has over 35 years of environmental analytical chemistry experience in academic and commercial laboratories. He has led method development and modification projects for both organic and inorganic analyses, which include arsenic speciation, methyl mercury, low-level mercury, vapor space organics, leaching and incremental sampling methodology (ISM). Dr. Bruce has been actively involved with the Interstate Technology and Regulatory Council (ITRC) committee for ISM, and he is a recipient of the ITRC Industry Recognition Award for his contribution. He also has experience developing custom cleanup methods to address sample specific interferences.
As Corporate Technical Director, Dr. Bruce's duties include investigation and implementation of new technology, process improvement, and leading technical project teams within TestAmerica. His method development work has involved incremental sampling methodology, mercury, metals speciation and organic extractions.
Dr. Bruce earned his BS in Chemistry at the University of Mount Union, OH, and his Ph.D. in Analytical Chemistry at the University of Cincinnati, OH.
The American Chemical Society
Dr. Bruce has published articles in journals and presented at environmental conferences and symposia over the past 24 years, which include:
Dr. Richard Burrows
Corporate Technical Director, TestAmerica
Dr. Burrows is a Corporate Technical Director for TestAmerica’s network of laboratories in the United States. His duties include implementing new technology, improving existing methods, and leading technical groups within TestAmerica.
He has over thirty years of experience in analytical chemistry in academic and commercial laboratories. His work has involved bringing new perspectives to detection limits, calibration, quality assurance and quality control, and method development.
Dr. Burrows has received the ACIL Preston Millar Award and TNI Charlie Carter awards. He received his B.S. in Chemistry and PhD in Analytical Chemistry from the University of Bristol, in England.
Chair of the Technical Committee of the American Council of Independent Laboratories.
On August 14, 2008, Dr. Burrows presented on a new procedure designed to determine method detection and quantitation limits at the 2008 National Environmental Monitoring Conference (NEMC) in Washington, DC.
This procedure, pioneered by Dr. Burrows and further developed under his leadership in association with an EPA sponsored Federal Advisory Committee, is intended to replace the current method detection limit (MDL) procedure found in Title 40 of the Code of Federal Regulations.
Analysis of Flue Gas Desulfurization Wastewaters by ICP-MS
Detection, Quantification and Calibration: Impacts on Data Quality in Environmental Chemistry Webinar
Analysis of flue gas desulfurization wastewaters by Agilent 7700x ICP-MS; Richard Burrows, TestAmerica Laboratories Inc. USA, Steve Wilbur, Agilent Technologies Inc. USA
Turning Data into Information by Richard Burrows 2010
Dr. Michael Berg
Regional Director, EMLab P&K, a TestAmerica company
Dr. Berg has 14 years of experience in molecular biology.
Dr. Berg's expertise is in molecular diagnostics, in particular, the use of PCR for the detection of environmental microorganisms. As a Senior Molecular Biologist, he provides consultation to clients in issues related to molecular diagnostics and allergen detection.
Dr. Berg earned his Ph.D. degree in Biology at TU Darmstadt, Germany with Postdoctoral experience in Plant Pathology.
Dr. Berg has peer-reviewed publications, thesis publications, and various poster presentations, which include:
Dr. Ariunaa Jalsrai
Senior Mycologist, EMLab P&K, a TestAmerica company
Dr. Ariunaa Jalsrai has 15 years of experience in mycology and has been working in the environmental testing industry for 7 years. Her expertise is in fungal taxonomy and microbial ecology. As a senior mycologist, she provides consultation to clients in issues related to mycology.
Dr. Jalsrai earned her Ph.D. in microbiology at the Moscow State University in Russia, followed by a postdoctoral tenure at the University of Wyoming.
Ariunaa Jalsrai (2000). Mongolian mined land and reclamation. International Symposium "Land Reclamation", Beijing. p. 530-534.
A. Jalsrai and D. Bayarlkhagva (1998). Distribution of Deuteromycetes in different soils of Mongolia and their taxonomy. Biology, 6 (136). p. 37-45.
Regional Service Center Manager, TestAmerica
Timothy Knollmeyer has 21 years of experience in the environmental laboratory industry that includes extensive experience in the analyses of soil, air, and water by Gas Chromatography.
Working in the Mobile Lab division, Mr. Knollmeyer did extensive testing of VOC's, PCB's and TPH in field-deployed laboratories. He has experience in the analyses of metals by X-ray Fluorescence. In addition to these common tests, Mr. Knollmeyer has trained significantly in Polymerase Chain Reaction (PCR) instrumentation, and deployed a field laboratory to test for known anthrax contamination.
As TestAmerica Operations Director, Mr. Knollmeyer's responsibilities also include the operational management of the analytical laboratory and program management staff of the TestAmerica Westfield facility in Massachusetts, including approximately 30 chemists, scientists, and project managers. He is responsible for the oversight of the Mobile Laboratory group and the issuance of quotations for Mobile Lab jobs. Currently Mr. Knollmeyer is also the Regional Service Center Manager for TestAmerica’s New York State facilities.
Mr. Knollmeyer earned his BS degree in Political Science from the University of Massachusetts.
American Chemical Society
Ruggedized Advanced Pathogen Identification Device (R.A.P.I.D)
DNA sequencing detection for various pathogens. Idaho Technologies.2000/2001
NITON LLC-Certified in radiation safety and monitoring, measurement technology, and machine maintenance of the NITON XRF Spectrum Analyzer 2003
Corporate Technical Director, TestAmerica Laboratories, Inc.
Karla Buechler, Corporate Technical Director for TestAmerica, is based in Sacramento, California. She has more than 30 years of experience in the environmental testing industry. She has held positions in Laboratory Management, Project Management and has many years of hands-on experience with chromatography including Liquid Chromatography Mass Spectrometry and High Resolution Mass Spectrometry. Ms. Buechler has extensive experience with a wide variety of complex regulatory programs such as Department of Defense, ambient and source air testing, sediments and tissues. In her current role she is a principal technical resource, oversees the technical quality of analytical services provided, and provides technical assistance to laboratory technical resources and clients.
Ms. Buechler earned her BS in Biochemistry from the University of California at Davis.
Vice President of Quality and EHS, TestAmerica
Raymond Frederici is Vice President of Quality & EHS for TestAmerica Laboratories, Inc. Mr. Frederici is 34 years tenured with TestAmerica and its legacy companies and is responsible for establishing, implementing, monitoring and enforcing company-wide ethics, quality assurance, and health & safety programs. Mr. Frederici drives risk management systems and operational cultures to minimize system failures and promote continuous improvement for the entire company. Mr. Frederici holds a B.S. in Environmental Biology from Eastern Illinois University and a Master in Business Administration from Olivet Nazarene University in Kankakee, IL. As a proven leader and organizational change agent, he possess excellent abilities for policy development and enforcement, strategic planning and process improvement. He is a strong and decisive decision-maker who takes personal responsibility for ethics, quality, environmental health & safety and fostering a company culture of honesty and data integrity. He provides ethics training companywide and implements fraud prevention and detection programs.
Mr. Frederici is active in numerous Professional Affiliations including the American Council of Independent Laboratories Environmental Data Integrity Initiative, the Institute for National Environmental Laboratory Accreditation, the National Environmental Laboratory Accreditation Conference and the Department of Defense Environmental Data Quality Workgroup. He has more than 20 professional publications and has been involved in the development of environmental laboratory accreditation regulations/standards through involvement in NELAC, the U.S. EPA and State agencies. His EHS responsibilities include companywide compliance with OSHA safety and EPA's hazardous material handling and waste disposal regulations. As TestAmerica's Ethics Compliance Officer, he fosters a company culture of honesty and data integrity by providing ethics training across all business functions and implements fraud prevention and detection programs.
Quality Compliance Director
Mr. Penfold is the Quality Compliance Director for TestAmerica. He has more than 40 years of experience in environmental analysis and radiochemistry. He is responsible for QA oversight at TestAmerica laboratories, monitoring and communicating DoD requirements, and developing corporate tools for ensuring and improving compliance.
The NELAC Institute (TNI) Radiochemistry Expert Committee member
Technical Director, TestAmerica
Terry Romanko has 25 years of experience in quality, research, development, and production within the radiochemical field. His background includes work in the environmental, radiochemical, pharmaceutical, and medical device industries, including a focus in Operations/Production, Product Development, Quality Control, and Radiation Safety.
Mr. Romanko earned his Bachelor's degree in Chemistry from Rice University in Houston, Texas.
Industry Marketing Manager, TestAmerica
Patricia McIsaac has 33 years of experience in environmental testing services. Her experience includes project management, quality assurance, account management, as well as product management. For the past 14 years, she has provided business and technical leadership for TestAmerica's Dredged Material, Sediment and Tissue Laboratories. As TestAmerica's Product Manager, she coordinates with TestAmerica's chemists, technical staff and project managers to consistently support and execute TestAmerica's Program Standards. These standards identify systematic laboratory procedures to address the variety of complexities and challenges associated with dredged material, sediment and tissue projects, which have a direct impact on project specific data quality objectives.
TestAmerica's Program Standards provide the technical framework for our laboratories to deliver the highest levels of scientific and service performance in environmental testing industry. TestAmerica's goal is to generate analytical data to meet the project's specific data quality objectives facilitating appropriate management decisions. Ms. McIsaac will assist the client's project team in the development of a comprehensive testing strategy to support all requirements of the dredged material, sediment and tissue programs. TestAmerica's Dredged Material, Sediment and Tissue Laboratories are committed to provide outstanding client service, the lowest detection limits, the highest integrity, the fastest turnaround times, and with the best accuracy and precision.
Ms. McIsaac earned her MS degree at the New Jersey Institute of Technology in Newark, NJ and her BS degree at Cook College, Rutgers University in New Brunswick, NJ.
Society of Environmental Toxicologist and Chemists (SETAC)
A REVIEW OF THE APPLICABILITY OF VARIOUS ELUTRIATE TESTS AND REFINEMENTS OF THESE METHODOLOGIES
Sediments & Tissues Analysis Webinar; Patricia McIsaac
President, TestAmerica Air Emissions Corp. a TestAmerica company
Rob Patterson has over 24 years of experience in source air emissions and ambient air testing, especially with the EPA and Texas Air Control Board methods of analysis. He is experienced in sampling Method 0010, Modified Method 5 Sampling Train; Method 0030, Volatile Organic Sampling Train; and various EPA and "Site Specific" acid gas and multiple metals sampling trains, including Ontario Hydro and EPA Methods 324 and 30B for Mercury.
Mr. Patterson earned his BS degree in Geology and Earth Science-Meteorology from Central Michigan University.
Source Evaluation Society
American Management Association
Board Member of STAC (Stack Testing Accreditation Council)
Certified Visible Emissions Evaluator
Certified Cabot Full-Face Respirator Fit Tester
Dr. William Anderson
Senior Chemical and Analytical Project Consultant, TestAmerica
Dr. William Anderson has 35 years of experience in the environmental testing industry.
Dr. Anderson's particular expertise is in analytical methodology and supporting quality assurance programs related to trial burn programs. He has extensive project experience regarding the analytical program design of incinerator and ambient air permitting activities. As an analytical chemist, he directly participates in the design and implementation of new analytical methods developments, project specific testing, and supporting quality assurance protocols. Much of the work produced by Dr. Anderson and his staff is used to generate legally defensible performance demonstration test reports that are to be judged by various regulatory agencies, including the EPA and state authorities.
Dr. Anderson earned his Ph.D. degree in Analytical Chemistry at the University of Tennessee.
Dr. Anderson has published an extensive array of scientific journals and has presented at technical symposia, which include:
Product Lifecycle Manager, TestAmerica
Jackie Trudell, Product Lifecycle Manager for TestAmerica based in Shelton, CT has nearly 10 years’ experience in the environmental testing industry. Prior to assuming her current role, Ms. Trudell held positions in Customer Service, Operations and Sales at TestAmerica. Ms. Trudell spent several years as a Project Manager where she developed a keen understanding of customer needs, regulatory requirements and customer driven solutions. In her current role as Product Lifecycle Manager, Ms. Trudell is responsible for managing a portfolio of TestAmerica’s product offerings, identifying new product or service opportunities and developing external marketing communications.
Ms. Trudell is currently pursuing a Master of Science in Applied Analytics at Columbia University. She earned a Master of Business Administration with a concentration in Marketing from Northeastern University, and a Bachelor of Science in Business Administration from the College of Charleston.
ASL Treatability Scientist III, TestAmerica
Mr. Bradley Suedbeck is a Treatability Scientist at TestAmerica Applied Sciences Laboratory (ASL) in Corvallis, Oregon. His experience includes working closely with Project Engineers to design and perform proof-of-concept and bench-scale water, drinking water and wastewater treatment evaluations at TestAmerica ASL’s Treatability Research Center. He has extensive hands-on experience developing solutions for a wide range of challenging projects including disinfection byproduct formation potential/mitigation strategies, Zeta-potential testing, Rapid Small-Scale Column Testing (RSSCT), and Toxicity reduction evaluations.
Mr. Suedbeck earned his BS in Environmental Engineering with a minor in Mathematics at the University of Nevada-Reno, in 2010.
Mr. Suedbeck has been a contributor and/or speaker for four sessions held at past AWWA conferences:
· “Bench-Scale Evaluation of Proposed Ozone-BAC Treatment Process for Singapore Woodleigh Waterworks.”
· “Taste and Odor Removal with Ozone-AOP at Singapore CCK Waterworks.”
· “Understanding Breakpoint Chlorination and Free Chorine Residual Methods in High pH Waters.”
· “Rapid Bench-Scale Testing of Adsorptive Media for Arsenic Removal – Lessons Learned.”
Technical Services Organization
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TestAmerica's Technical Services Organization (TSO) implements standardized laboratory best practices, technical support and development aimed at growing TestAmerica's technologies and products to deliver greater value for our clients. The TSO increases efficiency, enhances laboratory operations and creates greater synergies across TestAmerica.
Eric Redman, Director of Technical Services, leads the TSO. In addition to Eric Redman, the company has four distinguished Corporate Technical Directors; Dr. Richard Burrows, Dr. Mark Bruce, Mr. Bryce Stearns and Ms. Karla Buechler. Each has more than 25 years of experience in the environmental laboratory industry and serve as Experts on a variety of topics. They consult with clients on complex analytical testing issues and enable TestAmerica to implement new technologies, services and products faster and more consistently.
The TSO is also assisted by two Technical Support Specialists, Kevin Ho and John Shanholtzer, who serve as TestAmerica's in-house instrumentation specialists, assisting laboratories with instrument configurations, maintenance issues and new method set-up.
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In addition to the many specialty tests described throughout our site, TestAmerica offers numerous other non-routine test methodologies.
Sulfide is a precipitant of heavy metals and is important in controlling the bioavailability of metals in sediment. To support our clients’ evaluation of the bioavailability of divalent metals in sediment, TestAmerica developed the capabilities in the early 2000s to support the procedure identified in US EPA Draft Method, “Determination of Acid Volatile Sulfides and Simultaneously Extractable Metals in Sediment,” EPA-821-R-91-100.
TestAmerica has also supported clients with alternative method collection and sample handling procedures to minimize exposure of sediment samples to ambient air. We received sediment cores from the field and subsampled these cores in a nitrogen filled glove box to minimize the samples’ exposure to ambient air. We have also provided alternate sample collection devices using syringes to collect samples in the field and minimize their exposure to air.
TestAmerica developed a Low Level Mercury Analysis following EPA Method 1631 in 2002. This method also requires the laboratory to provide detailed sample collection and sampling handling instructions and materials to appropriately collect the samples and prevent contamination from field activities. TestAmerica added the additional capabilities to support this method in soil, sediment and tissue analysis as well. For more information on TestAmerica's Mercury capabilities, please click here.
TestAmerica developed the capability to support Methyl Mercury by EPA Method 1630 analysis in a wide variety of matrices including sediment, surface water and tissue samples. TestAmerica identified issues associated with matrix interferences for the method in the analysis of brackish waters. The laboratories investigated and implemented an alternative USGS method preparation procedure for this matrix. Due to the matrix interference issues for tissue samples, TestAmerica also uses the Florida DEP sample preparation procedure for tissue samples. TestAmerica has also supported the analysis of passive samplers using DGT®, which were deployed in sediment samples as well. For more information on TestAmerica's Mercury capabilities, please click here.
TestAmerica supports the analysis of organolead using methodology developed by the state of California.
Since the late 1990s, TestAmerica has developed environmental testing capabilities to support organotins analysis. This is for specific program requirements in ship building and the associated estuary and marine environments. Matrices we support include salt water, brackish water and sediment, as well as pore water.
Phthalic anhydride is a principal commercial form of phthalic acid. It was the first anhydride of a dicarboxylic acid to be used commercially. This colorless solid is an important industrial chemical, especially for the large-scale production of plasticizers. Maleic acid is an industrial raw material for the production of glyoxylic acid by ozonolysis. Maleic acid may be used to form acid addition salts with drugs to make them more stable, such as indacaterol maleate.
The use of natural attenuation as a remediation technique requires an understanding of the natural processes occurring at a site. For metals, natural attenuation typically involves a decrease in metal toxicity and/or mobility through dispersion, dilution, sorption and/or redox processes. One way to determine the geochemical fractionation of these metals in laboratory scale operations is through the use of a sequential extraction procedure. TestAmerica has evaluated and analyzed more than 300 samples for as many as 23 different elements. The data produced from this procedure are used for characterizing metal fate and transport, evaluating potential remedial alternatives for metal impacted soil, and estimating metal bioavailability for metals in soils or sediments.
While this procedure cannot be used to identify the actual form of a given metal in a soil, it is useful in grouping metals into immobilization phases or fractions. TestAmerica's SEP approach is a form of the consensus method for extraction being developed by the National Institute of Standards and Technology (NIST) (Schultz, et. al., 1996). Although the steps vary based on the data needs of each project, the seven potential steps in the SEP include the following:
Traditional analytical methods for sediment materials measure suspended sediment and colloidal content along with the freely dissolved chemicals. As a result, these protocols often report levels of chemicals in water samples that far exceed their maximum solubility. Surface and pore waters contain particulate and colloidal materials. These suspended materials have significant levels of contaminants that are not bioavailable. TestAmerica supports passive analysis by DTG for metals.
Bisphenol A (BPA) is part of a suite of emerging environmental contaminants that are supported by TestAmerica. The chemical has been produced in large quantities for use primarily in the production of polycarbonate plastics and epoxy resins. The primary source of exposure to BPA for most people is through the diet. The 2003-2004 National Health and Nutrition Examination Survey conducted by the Centers for Disease Control and Prevention (CDC) found detectable levels of BPA in 93 percent of 2,517 urine samples from people 6 years and older.
In 2012, TestAmerica developed an LC/MS method for glycol compounds in support of the oil and gas fracking market. Our goal was to evaluate the potential impact to groundwater and surface water of some of the additives used in the well development. The LC/MS method provides a low sensitivity as well as specificity in identification.
TestAmerica offers a gas chromatography method for the analysis of proprietary pesticides including: Ametryn, Atrazine, Butylate, Carbophenthion, Cycloate, Fonophos, EPTC, Methyl Carbophenothion, Molinate, Ethyl Parathion, Pebulate, Vernolate and Sumithion.