Laserfiche WebLink
Predicted Time to Reach Water Quality Objective (WQO) in Well MW-9 <br /> Shell Stockton Terminal,3515 Navy Drive,Stockton,California <br /> y = be' ===> 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 (TPHg) Benzene <br /> Given <br /> WQO: y 210 36 <br /> Constant b NA NA <br /> Constant a NA NA <br /> Starting date for current trend: NA NA <br /> Calculate <br /> Attenuation Half Life(years): (-hi(2)/a)/365.25 NA NA <br /> Estimated Date to Reach WQO: (x=ln(y/b)/a) Below WQO Below WQO <br /> t TPHg —e Benzene --Depth to Groundwater <br /> 1,000.0 0 <br /> 100.0 5 O <br /> w <br /> � v <br /> 0 10.0 <br /> 10 v <br /> b o <br /> b � <br /> U E <br /> sj <br /> U 1.0 15 � <br /> A <br /> 0.1 20 <br /> 5 ti 3 5 ti <br /> FIGURE <br /> Date <br /> C-18 <br /> Shell Stockton Terminal MW-9; <br /> 3515 Navy Drive TPHg and Benzene Concentrations <br /> Stockton,California <br /> ROVERS anPd De th to Groundwater <br /> &AASSOCI <br /> CONESSOCIATES <br />