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Table 18
<br /> Apartment Soil Vapor Extraction System-Operating Data
<br /> Parcel 2A-L&M OU
<br /> 666 West Weber Avenue, Stockton, CA
<br /> Flow VOC
<br /> Hourmeter Well Field System Flow Rate FID VOC FID VOC (Hexane)
<br /> Reading Temperature Vacuum Rate (scfm) Influent Effluent Removed Vapor Control
<br /> Date Notes (hours) (°F) (in Hg) (acfm) [1] (ppmv) (ppmv) (Ib/day) Efficiency(%)
<br /> 5/31/2007 b,c 6 70 6 -- 212 10,000.0 2.0 679.4 100.0%
<br /> 6/19/2007 c 201 70 10 -- 170 140.0 0.2 310.3 99.9%
<br /> 7/5/2007 399.4 94.9 4.4 227 185 28 0 4.8 100%
<br /> 7/30/2007 902 -- 5 -- 170 7.5 0 1.0 100%
<br /> 8/7/2007 981 -- -- -- 360 20 0 1.2 100%
<br /> 9/28/2007 1,520 63.7 5 140 119 110.9 0.0 5.0 100%
<br /> 10/23/2007 d 2,034 -- 8.3 232 193 505.3 0.0 15.4 100%
<br /> 11/12/2007 2,419.8 67.0 6.5 310 244 1,075.2 0.0 55.4 100%
<br /> 12/6/2007 e 3,001.5 66.0 6.6 300 236 311.2 0.0 53.3 100%
<br /> 1/23/2008 3,183.0 66.2 5 310 260 1,611.0 0.0 76.4 100%
<br /> 2/12/2008 3,463.2 67.0 6 280 225 47.2 0.0 64.5 100%
<br /> 3/3/2008 3,908.0 66.9 5 300 251 23.7 0.0 2.7 100%
<br /> 4/16/2008 4,041.3 67.2 5 300 251 939.0 0.2 38.8 100%
<br /> 5/12/2008 4,663.7 70.0 5 300 250 10.7 0.0 38.1 100%
<br /> 6/4/2008 4,983.4 70.1 5 310 258 52.7 0.0 2.6 100%
<br /> 7/2/2008 5,647.8 73.7 5 300 248 14.5 0.0 2.7 100%
<br /> 8/11/2008 6,286.1 73.9 5 301 249 12.7 0.0 1.1 100%
<br /> 9/10/2008 6,486.5 72.5 9 198 138 7.4 0.0 0.6 100%
<br /> 10/9/2008 7,136.9 71.0 6 280 223 119.0 0.0 3.7 100%
<br /> 11/11/2008 7,862.9 69.9 9 198 138 733.9 0.0 24.7 100%
<br /> 12/17/2008 8,401.5 67.7 9 200 140 23.4 0.0 16.9 100%
<br /> 1/14/2009 9,098.7 68.2 9 190 133 12.2 0.0 0.8 100%
<br /> 2/11/2009 9,728.4 65.1 9 200 141 16.4 0.0 0.6 100%
<br /> 3/11/2009 10,200.1 68.9 9 198 139 11.5 0.0 0.6 100%
<br /> 4/16/2009 11,065.4 70.9 9 195 136 30.1 0.0 0.9 100%
<br /> 5/8/2009 11,448.7 70.7 9 200 140 3.6 0.0 0.7 100%
<br /> 6/8/2009 12,024.3 70.1 9 200 140 11.1 0.0 0.3 100%
<br /> 7/9/2009 12,728.9 72.1 9 190 132 8.6 0.0 0.4 100%
<br /> 8/11/2009 13,442.5 72.1 9 200 139 8.1 0.0 0.4 100%
<br /> 9/8/2009 14,104.6 79.9 9 200 137 9.7 0.0 0.4 100%
<br /> 10/15/2009 14,938.9 73.1 9 200 139 9.7 0.0 0.4 100%
<br /> 11/10/2009 15,493.2 71.1 8 211.7 154.8 52.7 0.0 1.5 100%
<br /> 12/9/2009 16,173.3 67.2 8 211 155 3.1 0.0 1.4 100%
<br /> 1/12/2010 16,985.6 69.7 8 210 154 4.5 0.0 0.2 100%
<br /> 2/4/2010 17,507.8 70.0 8 211 155 1.9 0.0 0.2 100%
<br /> 3/2/2010 18,130.7 70.0 8 211 155 1.6 0.0 0.1 100%
<br /> 4/7/2010 18,905.0 69.1 8 200 147 8.6 0.0 0.2 100%
<br /> 5/12/2010 19,562.5 70.2 8 200 146 12.1 0.0 0.5 100%
<br /> 6/10/2010 20,259.4 67.1 6 235.1 189.0 2.3 0.0 0.4 100%
<br /> 7/12/2010 21,025.4 79.9 4.8 266.7 219.8 1.3 0.0 0.1 100%
<br /> 8/4/2010 21,578.8 75.9 7.5 211.7 156.9 11.6 0.0 0.4 100%
<br /> 9/15/2010 22,202.8 70.1 4.2 269.9 232.0 1,666.0 0.0 52.3 100%
<br /> 10/7/2010 22,465.3 75.7 6.9 280.7 213.7 14.0 0.0 60.0 100%
<br /> 11/17/2010 23,425.5 70.5 4.5 285.7 242.5 4.4 0.0 0.7 100%
<br /> 12/14/2010 24,095.8 60.7 5.0 314.7 266.8 1.5 0.0 0.2 100%
<br /> REPORTING PERIOD: September 15,2010 to December 14,2010
<br /> Period Operation (hours): 1,893
<br /> Period Operational (%): 87.6%
<br /> Historical %Operational: 78%
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