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Chevron U.S.A. <br /> Page 23 <br /> TABLE V (cont'd) <br /> Concentra ton of Petroleum Constituents in Groundwater <br /> ° (Concentrations expressed in parts per billion) <br /> Sampling Performed by Others <br /> Chevron Stn 9-6465 <br /> Sample Date & TPH <br /> 7.b. Rep-ort Benzene Toluene Ethbenz, Xyl4nes as <br /> MW-5 02/04/881 <0.5 <0.5 <0.5 <0.5 <1000 <br /> 06/28/881 <0.5 <0.5 <0,s <0.5. <1000 <br /> 09/14/881 <0.1 <1. <1, <I. 50 <br /> � i 12/16/881 <5 <10 <10 <10 <500 <br /> (uup) 12/16/881 <0.2 <2 <2 <2 100 <br /> F 03/23/891 <0.5 <0.5 <0.5 <0.5 <500 <br /> 07/19/891 1 0.9 <0.5 1 <500 <br /> r-, 10/05/891 <0.5 G0.5 <0.5 <0.5 <250 <br /> ' 5 G MW-6 06/28/881 <0, <br /> • ji0.5 <0.5 <0.5 <1000 <br /> 09/14/881 3.4 <1 <1 <1 240 <br /> 12/19/881 2,7 <2 <2 <2 100 <br /> * 03/23/891 2.8 <0.5 1.3 1.4 900 <br /> 07/19/891 <br /> * 10/05/851 <br /> 6 <br /> { � ! MW-7 06/28/881 <0.5 <0.5 <0,5 <0,5 <1400 <br /> 09/14/881 <0.1 <1 <1 <1 270 f <br /> 12/16/881 1.5 <0,1 <0.1 0.5 370 <br /> 03/23/811 <br /> 07/19/891 3.2 0,5 0.7 3.4 <500 <br /> a <br /> * 10/05/89 <br /> t-agend` <br /> r n/d - non-detected <br /> Ethbenz - Ethylbenzene <br /> TPH-Gas - Total Petroleum Hydrocarbons as Gasoline <br /> * - <br /> Not sampled due to insufficient water in the well f; <br /> ** - Sampled separately to confirm results + <br /> f (dup) - duplicate sample taken <br /> s. Results reported by: E <br /> p 2 Weiss & Associates <br /> yGroundwater Technology Inc. <br /> �aoao-zos-oa► <br /> i <br /> D:�acts s: �ic�n�iE. <br /> r <br />