Appendix 2																
"Percent recovery of anthropogenic organic compounds in quenched and nonquenched finished-water matrix-spike samples from surface-water supplies collected during Source Water-Quality Assessment sampling, 2004–10"																
(click here to access the full report)																
Percent recoveries are presented by use (or source) groups as defined in table 3. Percent recoveries for compounds within each of the 14 groups are presented in one worksheet (Surface-water data) with a filter attached to each column header within this spreadsheet.																
"Data are presented within each worksheet in a similar order. The finished water sample types are listed in the first column. Blue text indicates quenched samples, and green text indicates nonquenched samples. Quenched is defined as preservation of the sample with the addition of ascorbic acid. The percent recoveries presented in the worksheets are not rounded; recoveries are presented as calculated.

These data are sorted in the order (1) compound name, (2) finished water sample type, (3) use-group type, (4) U.S. Geological Survey parameter code, and (5) sampling date and time."																
Identifier used in this spreadsheet:																
CASRN1	Chemical Abstracts Service Registry number															
ACFB	Apalachicola-Chattahoochee-Flint River Basins (ACFB)															
ALBE	Albemarle-Pamlico Drainage Basin (ALBE)															
DELR	Delaware River Basin (DELR)															
EIWA	Eastern Iowa Basins (EIWA)															
GRSL	Great Salt Lake Basins (GRSL)															
MOBL	Mobile River Basin (MOBL)															
NECB	New England Coastal Basins (NECB)															
NVBR	Nevada Basin and Range (NVBR)															
OZRK	Ozark Plateaus (OZRK)															
PODL	Potomac River Basin and Delmarva Peninsula (PODL)															
SANT	Santee River Basin and Coastal Drainages (SANT)															
TRIN	Trinity River Basin (TRIN)															
UMIS	Upper Mississippi River Basin (UMIS)															
WHMI	White and Great and Little Miami River Basins (WHMI)															
WILL	Willamette Basin (WILL)															
**For more information and description concerning the USGS method code refer to:																
http://nwis.waterdata.usgs.gov/nwis/help/?read_file=qw_meth&format=html_table 																
																
"1This report contains Chemical Abstracts Service Registry numbers (CASRN), which is a Registered Trademark of the American Chemical Society. A CASRN is a numeric identifier that can contain up to nine digits, divided by dashes into three parts. For example, 67–66–3 is the CASRN for chloroform. The online database provides a source for the latest registry number information: http://www.cas.org/. Chemical Abstracts Service recommends the verification of the CASRNs through CAS Client ServicesSM."