|
Table 8
<br />First Quarter 2023 Total VOC Mass Calculations
<br />Austin Road Unit
<br />Forward Landfill, Manteca, California
<br />Contour Interval (ug/L)1 -25 25 - 50 50 - 75 75-100 100-125 125-141.9
<br />Average TVOC Concentration Within Interval (ug/L)12.5 37.5 62.5 87.5 112.5 133.5
<br />Unadjusted Aquifer Area Within Interval (ft2)34,669,975 6,595,457 4,131,814 2,254,272 1,008,796 165,210
<br />Additional Unadjusted Aquifer Area Within Interval (ft2)0 0 0 0 0 0
<br />Total Unadjusted Aquifer Area Within Interval (ft2)34,669,975 6,595,457 4,131,814 2,254,272 1,008,796 165,210
<br />Excluded Aquifer Area Within Interval (ft2)6,595,457 4,131,814 2,254,272 1,008,796 165,210 0
<br />Additional Excluded Aquifer Area Within Interval (ft2)0 0 0 0 0 0
<br />Total Excluded Aquifer Area Within Interval (ft2)6,595,457 4,131,814 2,254,272 1,008,796 165,210 0
<br />Total Adjusted Aquifer Area Within Interval (ft2)28,074,518 2,463,643 1,877,542 1,245,476 843,586 165,210
<br />Aquifer Volume Within Interval (ft3)
<br />[Aquifer Area (ft2) x Thickness (40 ft)]1,122,980,720 98,545,720 75,101,680 49,819,040 33,743,440 6,608,400
<br />Aquifer Volume Within Interval (L)
<br />(28.317 L/ft3)31,799,445,048 2,790,519,153 2,126,654,273 1,410,725,756 955,512,990 187,130,063
<br />Groundwater Volume Within Interval (L)
<br />[Aquifer Volume (L) x Porosity (0.25)]7,949,861,262 697,629,788 531,663,568 352,681,439 238,878,248 46,782,516
<br />TVOC Mass Within Interval (kg)
<br />[Average TVOC Concentration (ug/L) x Groundwater Volume
<br />(L)/1,000,000,000 ug/kg]
<br />99.4 26.2 33.2 30.9 26.9 6.2
<br />Plume-Wide TVOC Mass (kg)
<br />[Sum of all Interval TVOC Masses]
<br />Threshold Limit (kg)
<br />222.7
<br />789.5
<br />Annual Cap Tables_2023_0801 20/25
|