Administrative Contracts Service Center (3803R), Environmental Protection Agency, Ronald Reagan Building -- 7th Floor, 1300 Pennsylvania Avenue, N.W., Washington, DC 20460

A -- SAMPLE ANALYSIS, REPORT, AND ELECTRIC DATABASE SOL DDE913 DUE 060398 POC Carleton Myers, Contract Specialist, 202-565-2561 E-MAIL: myers.carleton@epamail.epa.gov, myers.carleton@epamail.epa.gov. The U.S. Environmental Protection Agency intends to award a contract to Emory University's Rollins School of Public Health, on a sole source basis, in order to purchase the completion of analysis samples and quality assurance/quality control activities, quality assurance of the data, and development of a data package and report on field samples and related quality assurance samples for the uncompleted portion of the metals analysis. The analysis of these samples will complete the metals analysis of all media for the study. BACKGROUND The National Human Exposure Assessment Survey (NHEXAS) is a program sponsored by EPA's Office of Research and Development. The aim of NHEXAS is to document the fact, distribution, and determinants of exposures to pollutants experienced by the U.S. population and to monitor geographic and temporal trends in these exposures, such as the impact of using short-term data to assess longer term exposures. One of the three NHEXAS studies was conducted in and around Baltimore by a consortium consisting of Emory Univ., Harvard Univ., and Johns Hopkins Univ., and Westat under a co-operative agreement with Harvard University. The general objectives of the NHEXAS Baltimore study are to: 1) measure pollutant concentrations in air, water, soil, dust, food, blood, and urine on surfaces and human skin using various sampling and analytical techniques, 2) determine direct exposure using personal exposure monitors, and 3) estimate human activity patterns using a series of questionnaires and diaries. Respondents were selected randomly using a stratified probability sample, so that interferences can be made about the exposures of the populations from which the samples are drawn. These data will be used to estimate human exposures among the sampled populations, test a series of hypotheses related to exposures, and design additional exposure studies. Target chemicals include metals, pesticides, and polyaromatic hydrocarbons (PAHs). Over the course of the study, thousands of samples were collected andanalyzed at several laboratories, including the metals analysis laboratory at Emory University School of Public Health. Some of the study samples were archived for future analysis because of lack of funding to complete the analysis during the course of the study. These include air, dust, soil, and dermal samples that were collected by and are in possession of Emory University. The purpose of this action is to purchase completion of the analysis of the samples and a report of the data described below from the study. STATEMENT OF WORK The contractor shall complete analysis, quality assurance and reporting of results for 1,129 study samples itemized in Table 1. In completing this analysis, the contractor shall conform to the applicable procedures outlined in the following NHEXAS Standard Operating Procedures, and any amendments/ revisions to these procedures: NHEXAS QSIP Standard Operating Procedure L06, Extraction of Metals by GF-AAS (June 26, 1995) and/or SOP L08, Analysis of Metals by ICP-MS (August 14, 1995) DELIVERABLES One copy of a data package shall be delivered to the EPA Project Officer containing the following information: 1) Narrative description including a list of analyzed samples; discussion of any issues arising as a result of sampling, extraction, or analysis; overview of initial and continuing calibration; detection limits; laboratory blanks; and any other quality assurance issues. 2) summary of calculated results for air (ng/m3), soil (ng/g), dust concentrations (ng/g), dust loadings (ng/cm2), and dermal loadings (ng and ng/cm2). 3) Sample analysis data for each of the above-referenced samples and accompanying QA/QC laboratory and field samples. An electronic file containing results shall be transmitted to EPA in format importable to spreadsheet software such as Lotus or Excel. This is not a formal solicitation, however, concerns interested in responding should furnish detailed data concerning capabilities. This notice may represent the only official notice to this solicitation. (0149)

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