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Main Title

The analysis of occurrence data from the Unregulated Contaminant Monitoring program (UCM) and National Inorganics and Radionuclides Survey (NIRS) in support of regulatory determinations for the second drinking water Contaminant Candidate List (CCL2) /

CORP Author

Environmental Protection Agency, Washington, DC. Office of Water.

Publisher

United States Environmental Protection Agency, Office of Water,

Year Published

2008

Report Number

EPA 815-R-08-014

Stock Number

PB2008-112800

Subjects

Drinking water--Contamination--Government policy--United States ; Metolachlor--Government policy--United States ; 1,3-Dichloropropene ; 1,1,2,2-Tetrachloroethane

Additional Subjects

Water pollution control ; Drinking water ; Sampling ; Potable water ; Health effects ; Toxicity ; Water systems ; Chemical compounds ; Contamination ; Contaminants ; Monitoring ; Reporting ; Data analysis ; National Inorganics and Radionuclides Survey(NIRS) ; National Primary Drinking Water Regulation(NPDWR) ; Contaminant Candidate List(CCL)

Internet Access

Description	Access URL
	http://www.epa.gov/safewater/ccl/pdfs/reg_determine2/report_ccl2-reg2_ucm_nirs-occurrencereport.pdf
	http://www.epa.gov/safewater/ccl/reg_determine2.html#schedule
	https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=P1008I8T.PDF
	http://purl.access.gpo.gov/GPO/LPS113038
(online)	https://catalog.gpo.gov/fdlpdir/locate.jsp?ItemNumber=0473-A-01&SYS=000629313

Holdings

Library	Call Number	Additional Info	Location	Last Modified	Checkout Status
NTIS	PB2008-112800	Some EPA libraries have a fiche copy filed under the call number shown.		07/26/2022

Collation

[120] pages : digital, PDF file

Abstract

The Unregulated Contaminant Monitoring (UCM) program (Rounds 1 and 2) and the National Inorganics and Radionuclides Survey (NIRS) were important sources of data considered by the United States Environmental Protection Agency (EPA) when evaluating the occurrence of unregulated contaminants on the second Contaminant Candidate List (CCL 2). This report presents EPAs analysis of national occurrence of CCL 2 contaminants with data from those sources. Detailed occurrence analyses are presented in this report to support the EPA regulatory determinations for the four CCL 2 contaminants with Round 1, Round 2 and NIRS data: boron, metolachlor, 1,3-dichloropropene, and 1,1,2,2-tetrachloroethane. Detailed descriptions are presented of the data sources, data editing and management, development of national cross-sections using UCM Round 1 and Round 2 data from States, and the analytical approaches used to assess the occurrence data.

Notes

Title from PDF title screen (viewed May 22, 2009). "June 2008." "EPA 815-R-08-014." Includes bibliographical references.

Contents Notes

Introduction -- Regulatory background -- Sources of data used for analysis -- Threshold evaluations -- General description of the two-stage analytical approach -- Detailed description of the Stage 1 analytical methodology -- Analytical tools -- UCM Round 1 data overview -- UCM Round 2 data overview -- National Inorganics and Radionuclides Survey (NIRS) data -- Developing a nationally representative perspective -- Analysis of national occurrence -- Graphical and spatial contaminants considered during CCL 2 regulatory determinations.

Place Published

Washington, D.C.

Supplementary Notes