Laserfiche WebLink
i <br /> GROUND ZERO ANALYSIS, INC. <br /> 1714 Main Street <br /> Escalon,California 95320 <br /> ' Telephone (209)838-9888 <br /> ' Facsimile (209)838-9883 <br /> I <br /> December 22, 2000 <br /> 1 <br /> Ms Margaret Lagono <br /> ' San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 3 04 E Weber Ave , 3 rd Fl <br /> ' Stockton, CA 95202 <br /> Subject Fourth Quarter 2040 Report, Knowles/Roek Property <br /> ' 102 South Wilson Way, Stockton, California (Figure 1) <br /> Dear Ms Lagono <br /> Ground Zero Analysis, Inc (Ground Zero) has prepared this report to summarize activities dunng <br /> ' the fourth quarter 2000 at the subject site Groundwater related activities included monitoring <br /> groundwater elevations and sampling groundwater from momtonng wells MW 1 through MW 13 <br /> As requested by San Joaquin County Public Health Services Environmental Health Division <br /> ' (PHS/EHD), groundwater samples were also collected from vapor wells VW1 through VW6 <br /> Analysis consisted of total petroleum hydrocarbons as gasoline (TPHg), benzene, toluene, <br /> ethylbenzene and total xylenes (BTEX), 1,2 dichloroethane (DCA), ethylene dibromide (EDB), <br /> ' and gasoline oxygenate additives [methyl tert-butyl ether (MTBE), ethyl tert-butyl ether (ETBE), <br /> di-isopropyl ether (DIPE), tertiary amyl methyl ether (TAME), tertiary butyl alcohol (TBA), <br /> ' methanol and ethanol] <br /> The soil vapor extraction system (VES) was not in operation during the fourth quarter 2000 The <br /> ' system was shut down on January 3 pending direction from PHS/EHD with respect to the <br /> confirmation soil bonngs, and remedial effectiveness evaluation proposed in Ground Zero's <br /> workplan dated September 17, 1999 <br /> —klgmr14QM20W <br />