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Sacramento River Basin NAWQA Program

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Water-Quality Assessment of the Sacramento River
Basin, California: Water-Quality, Sediment and Tissue
Chemistry, and Biological Data, 1995-1998
(Open-File Report 2000-391)

Quality Control
Spiked sample data: Ground Water

Volatile organic chemicals in unfiltered water

Number of significant figures do not reflect analytical method
reporting levels.

Method reporting levels of all analytes

[Cannot Calculate - Recovery of pesticide cannot be calculated because of estimated analytical values]

USGS Site Number State Well Number Date Time Type of Sample 1,1,1-Trichloroethane (Percent Recovery) 1,1-Dichloroethene (Percent Recovery) 1,2-Dichloroethane (Percent Recovery) 1,4-Dichlorobenzene (Percent Recovery) Bromodichloromethane (Percent Recovery) Tribromomethane (Percent Recovery) Chlorodibromomethane (Percent Recovery) Ethylbenzene (Percent Recovery) Tetrachloroethene (Percent Recovery) Tetrachloromethane (Percent Recovery) Trichloroethene (Percent Recovery) Chloroethene (Percent Recovery) Methyl tert-butyl ether (Percent Recovery)
381923121255001 6N/5E-33Q2M 5/23/96 1052 Spike 113 112 113 93 98 95 99 103 113 123 108 106 94
381923121255001 6N/5E-33Q2M 5/23/96 1053 Spike Replicate 118 108 113 98 103 95 99 108 123 123 108 99 94
390954121394302 15N/3E-8F2M 6/13/96 1042 Spike 118 108 123 93 108 95 103 103 108 123 103 76 94
390954121394302 15N/3E-8F2M 6/13/96 1043 Spike Replicate 124 117 128 98 103 90 94 103 108 128 103 99 108
382911121312301 7N/4E-3K2M 6/22/98 1132 Spike 208 170 217 117 201 185 175 134 120 191 165 154 156
382911121312301 7N/4E-3K2M 6/22/98 1133 Spike Replicate Cannot calculate Cannot calculate Cannot calculate Cannot calculate Cannot calculate 80 80 45 45 Cannot calculate 70 69 67
382800121270701 7N/5E-17B1M 7/22/98 1042 Spike 95 75 90 77 101 96 94 93 86 82 90 61 71
382800121270701 7N/5E-17B1M 7/22/98 1043 Spike Replicate 83 64 88 68 92 88 91 84 77 75 81 47 68
383727121301801 9N/4E-23A1M 8/6/98 0932 Spike 92 80 Cannot calculate 59 97 92 84 72 59 84 81 61 97
383727121301801 9N/4E-23A1M 8/6/98 0933 Spike Replicate 113 98 Cannot calculate 76 117 105 102 97 75 105 104 69 105
384318121230001 10N/5E-13F1M 8/19/98 1012 Spike 99 81 108 71 103 88 85 87 72 87 93 76 100
384318121230001 10N/5E-13F1M 8/19/98 1013 Spike Replicate 103 80 114 75 109 93 89 92 75 90 97 63 104

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