Scientific Investigations Report 2006–5232
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006–5232
Table 3. Total organic carbon and purgeable organic compound concentrations and F-pseudosigma estimated sample standard deviations after purging 1 and 3 borehole volumes of water from selected wells during 2004 and 2005, with statistical comparisons of analytical results, Idaho National Laboratory, Idaho.
[See figures 1 and 2 for location of wells. Analytical results and F-pseudosigma uncertainties are in milligrams per liter (mg/L) or micrograms per liter (µg/L). Shading indicates not statistically comparable at the 95-percent confidence level. Z-value, calculated using equation 1 (a Z-value less than or equal to 1.96 suggests statistical equivalence at the 95-percent confidence level). Abbreviations: BHV, borehole volume; F-pseudos, F-pseudosigma (estimated sample standard deviation reported as 1 sigma); MRL, minimum reporting level; NA, not applicable; NS, not sampled; USGS, U.S. Geological Survey; <, less than]
Well identifier | Sample date |
Total organic carbon (mg/L) | Purgeable organic compounds (µg/L) | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
1-BHV | F-pseudos | 3-BHV | F-pseudos | Z-value | 1-BHV | F-pseudos | 3-BHV | F-pseudos | Z-value | |||
Area 2 | 10-05-04 | NS | NS | NS | NS | NA | NS | NS | NS | NS | NA | |
IET DISP | 10-09-04 | NS | NS | NS | NS | NA | NS | NS | NS | NS | NA | |
Site 14 | 10-12-04 | <0.4 | 0.000 | <0.4 | 0.000 | 0 | NS | NS | NS | NS | NA | |
Site 19 | 10-04-04 | NS | NS | NS | NS | NA | NS | NS | NS | NS | NA | |
TRA DISP | 10-07-04 | NS | NS | NS | NS | NA | NS | NS | NS | NS | NA | |
USGS 4 | 10-14-04 | 2.08 | .354 | 1.358 | .231 | 1.71 | NS | NS | NS | NS | NA | |
USGS 15 | 10-12-04 | NS | NS | NS | NS | NA | NS | NS | NS | NS | NA | |
WS INEL 1 | 10-27-04 | NS | NS | NS | NS | NA | NS | NS | NS | NS | NA | |
Arbor Test | 04-25-05 | NS | NS | NS | NS | NA | NS | NS | NS | NS | NA | |
CFA LF 2-10 | 04-12-05 | 2.53 | .348 | .52 | .072 | 5.66 | NS | NS | NS | NS | NA | |
No Name 1 | 04-11-05 | <.4 | .000 | 4.526 | .623 | 2.82 | 161<MRL | 261 = NA | 161<MRL | 261 = NA | 361 = 0 | |
Site 9 | 04-28-05 | NS | NS | NS | NS | NA | NS | NS | NS | NS | NA | |
Site 17 | 04-27-05 | NS | NS | NS | NS | NA | NS | NS | NS | NS | NA | |
USGS 12 | 04-21-05 | 5.76 | .793 | 5.39 | .741 | 0.34 | 161<MRL | 261 = NA | 161<MRL | 261 = NA | 361 = 0 | |
USGS 22 | 04-25-05 | NS | NS | NS | NS | NA | NS | NS | NS | NS | NA | |
USGS 103 | 04-18-05 | 4.06 | .559 | 1.94 | .267 | 3.42 | NS | NS | NS | NS | NA | |
USGS 119 | 03-31-05 | NS | NS | NS | NS | NA | 161<MRL | 261 = NA | 161<MRL | 261 = NA | 361 = 0 |
1Sixty-one compounds are less than the minimum reporting levels.
2Calculation of F-pseudosigma estimated sample standard deviation is not applicable for 61 compounds.
3Z-value is set to 0 for 61 compounds.