Dames & Moore, 1999 - USDA Forest Service

July 2, 1999
Sediment Data, Fall 1998, Holden Mine
Page 2
9. Laboratory Duplicate Sample - Not Applicable
A laboratory duplicate was not performed as only one sample analysis was performed. Data were
not qualified.
10. Field Duplicate - Not Applicable
11. Matrix Spike
A matrix spike was not performed as only one sample analysis was performed. Data were not
qualified.
12. ICP Serial Dilution (ICP analysis only) - Acceptable
13. Detection Limits - Acceptable
14. Type of Review - Summary
15. Overall Assessment of Data
The usefulness of the data is based on EPA guidance documents listed above. Upon
consideration of the information presented above, the data are acceptable except where flagged with data
qualifiers that modify the usefulness of the individual values.
Data Qualifiers:
U The analyte was analyzed for, but was not detected above the reported sample quantitation limit.
J The analyte was positively identified; the associated numerical value is the approximate
concentration of the analyte in the sample.
UJ The analyte was not detected above the reported sample quantitation limit. However, the
reported quantitation limit is approximate and may or may not represent the actual limit of
quantitation necessary to accurately and precisely measure the analyte in the sample.
R The sample results are rejected due to'serious deficiencies in the ability to analyze the sample
and meet quality control criteria. The presence or absence of the analyte cannot be verified.
DAMES & hlOORE