Table 1.

Hydraulic conductivities from pumped impeller flow logging on the confined chalk aquifer, Wilfholme Landing Test Site, June and October 2005

Well nameUK grid referenceGround surface elevation (mASL)Elevation top of aquifer (mASL)Transmissivity (m2 day−1)Layer thickness (m)Layer K (m day−1)Lower 95% confidence limit on KUpper 95% confidence limit on K
Wilfholme PTA0624722−15.34908.655*
28.40.540.50.6
26.70
Wilfholme M1TA0624722−15.04959.313*
15.2111112
2.110092110
29.40
Wilfholme M2TA0624722−12.948511.313*
4.80.60.62.5
2.310089100
9.96.25.96.7
8.84.44.15.7
210
Wilfholme M3TA0624722−15.049017.414*
1.87070
2.01422
5.70.451.6
4.78.67
1.53433
21.90
  • * Upper layer value corrected for presence of well casing as explained in the text; no confidence interval given.

  • Confidence interval could not be computed by R.