Record Display for the EPA National Library CatalogRECORD NUMBER: 24 OF 28
|Main Title||The analysis of occurrence data from the First Unregulated Contaminant Monitoring Regulation (UCMR 1) in support of regulatory determinations for the Second Drinking Water Contaminant Candidate List (CCL 2) /|
|CORP Author||Environmental Protection Agency, Washington, DC. Office of Water.|
|Publisher||U.S. Environmental Protection Agency, Office of Water,|
|Report Number||EPA 815-R-08-013|
|Subjects||Drinking water--Contamination--Government policy--United States ; Organic water pollutants--Government policy--United States ; Boron ; Metolachlor ; Butyl methyl ether ; Dimethyl tetrachloroterephthalate ; 1,1-Dichloro-2,2-bis(p-chlorophenyl)ethylene ; 1,3-Dichloropropene ; 2,4- Dinitrotoluene ; 2,6-Dinitrotoluene ; s-Ethyl dipropylthiocarbamate ; Fonofos ; Terbacil ; 1,1,2,2-Tetrachloroethane|
|Additional Subjects||Drinking water ; Water pollutants ; Water quality management ; Potble water ; Health effects ; Toxicity ; Water systems ; Chemical compounds ; Contamination ; Contaminants ; Monitoring ; Sampling ; Reporting ; Data analysis ; Unregulated Contaminant Monitoring Regulation(UCMR) ; Drinking Water Contaminant Candidate List ; Contaminant Candidate List(CCL) ; National Primary Drinking Water Regulation(NPDWR)|
|Collation|| p. : digital, PDF file|
Contaminant occurrence data collected under the First Unregulated Contaminant Monitoring Regulation (UCMR 1) are nationally representativepublic water system monitoring results. This UCMR 1 monitoring was conducted for select unregulated contaminants in drinking water under the authority of Safe Drinking Water Act. The UCMR 1 program specified that a statistically representative group of small public water systems (serving between 25 and 10,000 persons) and all large public water systems (serving more than 10,000 persons) were required to conduct monitoring and submit drinking water sample results for a list of specified unregulated contaminants from the second Contaminant CandidateList (CCL 2). This report presents the United States Environmental Protection Agency (EPA) analysis of the national occurrence of unregulated contaminants on the CCL 2 that were monitored in public water systems (PWSs) under the UCMR 1. Detailed occurrence analyses are presented for ten contaminants evaluated during EPAs CCL 2 regulatory determinations: the mono- and di-acid degradates of dimethyl tetrachloroterephthalate (DCPA, also known as dacthal), 1,3- dichloropropene, 1,1-dichloro-2,2-bis (p-chlorophenyl)ethylene (DDE), 2,4-dinitrotoluene, 2,6- dinitrotoluene, s-ethyl dipropylthiocarbamate (EPTC), fonofos, methyl tertiary butyl ether (MTBE), and terbacil. Less detailed occurrence summaries are presented for several other UCMR 1 contaminants as well. This report also describes the sources, quality, management, and characteristics of the UCMR 1 data.
Title from title screen (viewed Oct 6, 2008). "June 2008." "EPA 815-R-08-013." Includes bibliographical references.
Introduction -- Regulatory background -- Two-stage analytical approach for small and large systems -- Analytical tools -- UCMR 1 Program overview -- UCMR 1 design and implementation -- Large systems (Serving>10,000 people) -- Small systems (Serving <10,000 people) -- UCMR 1 data description -- Data overview -- Data management -- Assessments of data completeness and representativeness -- Additional data management considerations -- Description of Stage 1 analytical methodology -- Stage 1 analysis -- Additional considerations for Stage 1 analysis -- Sample-point-level analyses -- Description of Stage 2 analytical methodology -- Stage 1 occurrence estimates -- Stage 2 occurrence estimates: an example -- Spatial and graphical assessments of contaminants.