Laserfiche WebLink
Predicted Time to Reach Water Quality Objective (WQO) in Well MW-29 <br /> Shell Stockton Terminal,3515 Navy Drive,Stockton,California <br /> y = b e' ===> x=ln(y/b)/a <br /> where: y=concentration inµg/L a=decay constant <br /> b=concentration at time(x) x=time(x)in days <br /> Total Petroleum <br /> Hydrocarbons as <br /> Gasoline <br /> Constituent (rPHg) Benzene <br /> Given <br /> WQO: y 210 46 <br /> Constant b 2.83E+08 8.75E+17 <br /> Constant a -3.31E-04 -9.64E-04 <br /> Starting date for current trend: 8/6/2001 8/6/2001 <br /> Calculate <br /> Attenuation Half Life(years): (-In(2)/a)/365.25 5.73 1.97 <br /> Estimated Date to Reach WQO: (x=1n(y/b)/a) Aug 2016 fun 2006 <br /> a—TMg 9 Benzene —Depth to Groundwater <br /> 10,000.0 0 <br /> TPHg:y=2.83E+OSe-3s1Eosx <br /> 1,000.0 -- — 4 £j' <br /> O <br /> E+ <br /> a <br /> ego 100.0 8 v <br /> 3 3 <br /> o 'd <br /> t <br /> C10.0 12 0 <br /> v O <br /> C g <br /> U <br /> 1.0 16 d <br /> Benzene:y=8.75E+170"Eo Ga <br /> 0.1 20 <br /> ti � ti M <br /> 1°�A ti 10r IDSA 1Dr tiDr 1°r FIGURE <br /> Date C-64 <br /> Shell Stockton Terminal <br /> Shel3515 l <br /> Drive MW-29: <br /> Stockton,California TPHg and Benzene Concentrations <br /> CONESTOGA-ROVERS and Depth to Groundwater <br /> &ASSOCIATES <br />