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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 /> VOC
<br /> Hourmeter Well Field System Flow Flow FID VOC FID VOC (Hexane)
<br /> Reading Temperature Vacuum Rate Rate Influent Effluent Removed Vapor Control
<br /> Date Notes hours "F in H acfm) (scfm)[1] ppmv ppmv Ib/da 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 a 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 Tr 0.0 0.1 1007'
<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 /> REPORTING PERIOD: July 12,2010 to September 15,2010
<br /> Period Operation(hours): 1,177 IL
<br /> Period Operational(%): 50.6%
<br /> Historical%Operational: 77%
<br /> Definitions:
<br /> °F=Degrees Fahrenheit VOC=Volatile Organic Compound
<br /> inHg=Inches of mercury ppmv=Parts per million by volume
<br /> acfm=Actual cubic feet per minute Ib=Pound
<br /> scfm=Standard cubic feet per minute SJVAPCD=San Joaquin Valley Air Pollution Control District
<br /> [ ]=Indicates reference to equation ATC=Authority to Construct
<br /> FID=Flame Ionization Detector
<br /> Notes:
<br /> -Column under heading VOC(Hexane)Removed(Ib/day) added 2Q10 to track removal rate of total VOCs.
<br /> a=VOC reported as Hexane(molecular weight 86.17)for VOC vapor mass removal rate calculation. Hexane was used
<br /> because it was most representative of the lower carbon range organics.
<br /> b=System inspected by the air board and started on 5/31/2007.
<br /> c=Vapor flow data collected as SCFM.
<br /> d=Flow rate(acfm)derived from Roots 56 curve with temperature being the average for the system.
<br /> e=Flame Out
<br /> Equations:Ill SCFM- ACFM•T d•�F aj
<br /> 460+T)•Ptm
<br /> Tstd Temperature at standard conditions(530 Rankine)
<br /> Pabs Atmospheric pressure at standard conditions minus manifold vacuum(inHg)
<br /> Patin Atmospheric pressure at standard conditions(29.92 inHg)
<br /> T Manifold vapor temperature reading(°F)
<br /> Permits:
<br /> Air emissions are permitted under SJVAPCD ATC Number N-4878-2-0.
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