Laserfiche WebLink
Predicted Time to Reach Water Quality Objective (WQO) in Well MW-24 <br /> Shell Stockton Terminal,3515 Navy Drive,Stockton,California <br /> y = b e" ===> x=ln(v/b)/ a <br /> where: y=concentration inµg/L a=decay constant <br /> b=concentration at time(x) x=time(x)in days <br /> Methyl Tertiary Tertiary Butyl <br /> Butyl Ether Alcohol <br /> Constituent (MTBE) (TBA) <br /> Given <br /> WQO: y 1,500 18,000 <br /> Constant b 3.90E+29 6.86E+23 <br /> Constant a -1.58E-03 -1.22E-03 <br /> Starting date for current trend: 5/12/2005 2/2/2006 <br /> Calculate <br /> Attenuation Half Life(years): (-ln(2)/a)/365.25 1.20 1.56 <br /> Estimated Date to Reach WQO: (x=In(y/b)/a) Feb 2005 Feb 2001 <br /> —�MTBE —m-TBA —Depth to Groundwater <br /> 100,000 0 <br /> TBA:y=6.86E+23e-1�-Mx <br /> 10,000 3fi <br /> O <br /> F <br /> a <br /> m 1,000 6 v <br /> � m <br /> n <br /> ty 100 9 0 <br /> 1 � <br /> u o <br /> G <br /> U 10 12 v <br /> A <br /> MTBE:y=3.90E+290.seeosx <br /> 1 15 <br /> FIGURE <br /> Date <br /> C-60 <br /> Shell Stockton Terminal <br /> 3515 Navy Drive lVlW-24' <br /> Stockton,California MTBE and TBA Concentrations <br /> CONESTOCA-ROVERS and Depth to Groundwater <br /> &ASSOCIATES <br />