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Gossman Consulting, Inc

Data Review and Validation

Service Description

You already have reams and stacks of test data. It is just as important to know how valid and defensible that data is.

Through years of experience, Gossman Consulting, Inc. has come to know that just because testing meets established QA/QC criteria does not automatically mean that that data necessarily represents true values. GCI is aware of test methods approved and required by government agencies which in fact give false values even when performed to the highest degree of accuracy and precision of the method. In some cases, this situation occurs because the regulatory agency has mistakenly applied methods to applications and matrices for which they were never truly validated.

GCI personnel have many years of study, training and experience with the practical application of data quality reviews, including providing expert witness testimony on testing and test data. Our personnel are experienced at taking valid test and operational data and performing mass balance calculations on process systems, thus supporting an understanding of the processes so that you can confidently undertake operational or environmental improvements.

This area of sound scientific understanding meeting practical application is where GCI can provide some of the most beneficial services. GCI has the background and experience to review routine QA/QC activities and the experience to ensure strong practical validations. You have important questions about test data: is it valid? does it meet the need? what can it tell us? GCI can provide your solutions to these questions.


David Gossman

Sue Gossman


GCI has prepared a number of papers relevant to data review and validation. (If a link to a paper title is not yet available please e-mail with your fax number for a copy.)

"Comparison of Metal Emissions from Cement Kilns Utilizing Hazardous Waste Fuels with Commercial Waste Incinerators"

"Metal Equilibration and Process Capture Efficiencies in Cement Kilns"

"The Use of Monochlorobenzene as a Principal Organic Hazardous Constituent for Destruction Efficiency Determinations in Cement Kilns"

"Quality Control of Hazardous Waste Fuel"

"Suitability of Hydrocarbon and Carbon Monoxide Measurement as Combustion Indicators in Cement Kilns"

"Typical Metal Concentrations in RCRA Waste Burned in Cement Kilns"

"The Fate of Trace Metals In The Wet Process Cement Kiln"

"Cement Kilns Sources of Chlorides Not HCl Emissions"

"Comparison of Metals Spiking Systems and Metal Compound Selection Among the Cement Kilns Conducting Compliance Tests"

"2,3,7,8-TCDD Equivalent Emissions from Cement Kilns Burning Hazardous Waste"

"A Method for the Rapid Semi-Quantitative Identification of Hazardous Organic Constituents in Liquid Organic Hazardous Waste Streams"

"A Review of the Usefulness of Various ASTM and SW-846 Methods Which May Be Used by the Thermal Treatment Industry"

"The Effect of Process Differences on System Removal Efficiencies (SREs) and the Fate of Metals in Cement Kilns"

"A Comparison of Normal and Worst Case Cement Plant Emissions”

"Sources of PCDDs/PCDFs in Cement Kiln Emissions”

"Quality Control Review of Mercury and PCDD/PCDF Emissions Data From Cement Kilns Used for MACT Evaluations”

"Observations and Comments on EPA/DOE Mercury CEMs Demonstration at Holnam's Holly Hill, SC Facility"

"The Design of A Custom Database System for Storing and Accessing Point Source Emission Test Data and Associated Process Conditions"

"The Analysis of Flammable Industrial Wastes Using Ion Chromatography"

"Data Processing as an Alternative to Extensive Sample Clean up in the Gas Chromatographic Determination of PCBs"

"The Determination of Metals in Paint and Paint Wastes using Atomic Absorption and Emission Spectroscopy"

GCI Tech Notes "Why All Cement Kilns Should Test Their CKD" June-97

GCI Tech Notes "Determining Organic Compound Destruction Efficiency" Feb-97

GCI Tech Notes "The Impact of CKD Recycling on “HCl” Emissions from the Wet Process Cement Kiln”, Aug-96

GCI Tech Notes "Comments on Draft SW-846", Jan-96

GCI Tech Notes "A Caution in the Use of Analytical Data in Calculating TEQ Values for Dioxin Reporting”, Dec-95

GCI Tech Notes "The Potential for CKD Insufflation to Impact Metals Emissions from Cement Kilns”, Sept-95

GCI Tech Notes "Appropriate Sampling Frequency for Cement Process Samples During Stack Testing”, July-95

GCI Tech Notes "Dioxin Health Assessment Document Review and Comment, (EPA/600/BP-92/001a,b & c)”, March-95