An Analysis of Passive Soil Vapor Extraction Wells

WSRC-TR-2000-00182
MetLab Treatability Study: June 2000 Update
200
160
Cumulative Mass
Removed, lbs
120
80
40
0
PCE
TCE
May-98 Sep-98 Jan-99 May-99 Sep-99 Jan-00 May-00 Sep-00
Figure 11 – Cumulative Mass Removed for MetLab Vadose Zone Plume
Table 5 – Fitted TCE Concentration Data and Estimated Mass Removed by Well for
the MetLab Vadose Zone Plume
Decay
Well Vapor TCE
Concentration, ppmv
Cumulative TCE Mass
Removed, lbs
Constant 0-Year 1-Year 2-Year 1-Year 2-Year
Well ID A 5/1/98 6/1/99 1/1/00 6/1/00 6/1/99 1/1/00 6/1/00
MLBB-001 -8.78E-04 33.93 23.96 19.86 17.37 5.90 8.12 9.47
MLBB-002 -7.75E-04 11.71 8.62 7.30 6.49 2.08 2.89 3.39
MLBB-003 Average Used 3.99 3.99 3.99 3.99 0.82 1.23 1.53
MLBB-004 Average Used 3.41 3.41 3.41 3.41 0.70 1.05 1.30
MLBB-006 -5.73E-04 57.35 45.71 40.43 37.06 10.57 14.96 17.78
MLBB-007 -1.57E-03 30.19 16.20 11.58 9.12 4.64 6.02 6.76
MLBB-008 -1.44E-03 80.83 45.73 33.61 27.01 12.71 16.68 18.85
MLBB-009 -1.87E-03 39.27 18.70 12.52 9.42 5.73 7.27 8.05
MLBB-010 -3.21E-03 139.38 39.06 19.64 12.06 16.38 19.15 20.24
MLBB-011 -3.98E-04 5.30 4.53 4.16 3.92 1.01 1.45 1.75
MLBB-012 -1.42E-03 33.96 19.31 14.24 11.47 5.35 7.03 7.95
MLBB-013 Average Used 0.54 0.54 0.54 0.54 0.11 0.17 0.21
MLBB-014 Average Used 2.15 2.15 2.15 2.15 0.44 0.66 0.82
MLBB-015 -9.29E-04 8.10 5.60 4.59 3.99 1.40 1.91 2.22
MLBB-016 Average Used 2.42 2.42 2.42 2.42 0.50 0.75 0.93
MLBB-017 Average Used 2.93 2.93 2.93 2.93 0.60 0.91 1.12
MLBB-018 Average Used 2.19 2.19 2.19 2.19 0.45 0.68 0.84
MLBB-019 Average Used 2.43 2.43 2.43 2.43 0.50 0.75 0.93
MLBB-020 Average Used 1.09 1.09 1.09 1.09 0.22 0.34 0.42
Total TCE 70.12 92.02 104.56
Removed, lbs
Concentration (ppmv) = Ae (Bt) where A is 0-Year concentration and t is time in days
21