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Table 5 Groundwater Analytical Data-Fuel Oxygenates and VOCs South Shore Parcels-Parcel 2A and Adjacent Areas West Weber Avenue and North Lincoln Street Stockton,California sec- Iso- p-Iso- 4-Iso- 1,2,4-Tri- 1,3,5-Tri- Methylene n-Butyl- tert-Butyl- Butyl- propyl- propyl- propyl- Naph- Propyl- n-Propyl- methyl- methyl- Other Sample Date MtBE TBA DIPE EtBE TAME Methanol Ethanol chloride TCE 1,2-DCA Acetone benzene benzene benzene benzene toluene toluene thalene benzene benzene benzene benzene Chloroform VOCs` ID Sampled (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) B Zone Wells-Parcel 2AI2A and Adjacent Areas(cont.) MW-49(cont.) 2/5/07 Not sampled due to SPH 5/7/07 Not sampled due to SPH 7/3/07 Not sampled due to SPH 10/8/07 Not sampled-no access agreement 1/21/08 Not sampled due to SPH 4/21/08 Not sampled due to SPH 7/21/08 Not sampled due to SPH 10/20/08 Not sampled due to SPH 1/19/09 Not sampled due to SPH 4/20/09 Not sampled due to SPH 7/27/09 Not sampled due to SPH 10/19/09 Not sampled due to SPH 1/18/10 Not sampled due to SPH 4/19/10 Not sampled due to SPH 7/19/10 Not sampled due to SPH /18/10 Not sampled due to SPH MW-50 5/25/05 Not sampled due to SPH 8/24/05 0.00061 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- 0.0014 <0.0005 0.00089 0.0015 <0.0005 --- <0.0005 --- 0.0022 <0.0005 <0.0005 0.0024 ND 11/14/05 Not sampled due to Sheen 2/16/06 0.00054 <0.00510 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- 0.0012 <0.0005 0.0018 0.004 <0.0005 --- <0.0005 --- 0.0046 <0.0005 <0.0005 ND 5/18/06 <0.0005 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- <0.0005 <0.0005 0.00062 <0.001 <0.0005 --- <0.0005 --- 0.00083 <0.0005 <0.0005 ND 8/17/06 <0.0005 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- <0.0005 <0.0005 0.0011 0.0016 <0.0005 --- <0.0005 --- 0.0015 <0.0005 <0.0005 ND 11/16/06 0.00074 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- 0.0032 0.00057 0.0044 0.0074 <0.0005 --- <0.0005 --- 0.0093 <0.0005 <0.0005 ND 2/5/07 Not sampled due to Sheen 5/7/07 Not sampled due to SPH 7/3/07 Not sampled due to SPH 10/8/07 Not sampled-no access agreement 1/21/08 Not sampled due to SPH 4/21/08 Not sampled due to SPH 7/21/08 Not sampled due to SPH 10/20/08 Not sampled due to SPH 1/19/09 Not sampled due to SPH 4/20/09 Not sampled due to SPH 7/27/09 Not sampled due to SPH 10/19/09 Not sampled due to SPH 1/18/10 Not sampled due to SPH 4/19/10 Not sampled due to SPH 7/19/10 Not sampled due to SPH Not sampled due to SPH MW-51 5/26/05 0.00093 <0.005 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- <0.0005 0.00068 <0.0005 <0.0005 <0.0005 --- <0.0005 --- <0.0005 <0.0005 0.0086 ND 21 8/24/05 0.0015 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.5 <0.005 <0.0005 <0.0005 --- --- <0.0005 0.00081 <0.0005 <0.0005 --- <0.0005 --- <0.0005 <0.0005 <0.0005 ND 11/16/05 0.0021 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- <0.0005 <0.0005 0.00068 <0.0005 <0.0005 --- <0.0005 --- <0.0005 <0.0005 <0.0005 ND 2/15/06 0.0018 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- <0.0005 <0.0005 0.00069 <0.0005 <0.0005 --- <0.0005 --- <0.0005 <0.0005 <0.0005 ND 5/19/06 0.0017 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- <0.0005 0.00055 0.0012 0.00052 <0.0005 --- <0.0005 --- <0.0005 <0.0005 <0.0005 ND 8/17/06 0.0017 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- <0.0005 <0.0005 0.00079 <0.0005 <0.0005 --- 0.00077 --- <0.0005 <0.0005 <0.0005 ND 11/16/06 0.0018 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- 0.00051 0.00062 0.0014 <0.0005 <0.0005 --- <0.0005 --- <0.0005 <0.0005 <0.0005 ND 2/8/07 0.0017 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- <0.0005 0.00056 0.0011 <0.0005 <0.0005 --- <0.0005 --- <0.0005 <0.0005 <0.0005 ND 5/8/07 <0.009 <0.05 <0.009 <0.009 <0.009 <0.9 <0.09 <0.009 <0.009 <0.009 --- <0.009 <0.009 <0.009 <0.009 <0.009 --- <0.009 --- <0.009 <0.009 <0.009 ND 7/3/07 Not sampled-no access agreement 10/8/07 Not sampled-no access agreement 1/24/08 0.0016 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- <0.0005 <0.0005 0.001 <0.0005 <0.0005 --- <0.0005 --- <0.0005 <0.0005 <0.0005 ND 4/23/08 0.0012 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- <0.0005 0.00056 0.001 <0.0005 <0.0005 --- <0.0005 --- <0.0005 <0.0005 <0.0005 ND 7/24/08 0.0010 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- <0.0005 <0.0005 0.00074 <0.0005 <0.0005 --- <0.0005 --- <0.0005 <0.0005 <0.0005 ND 10/22/08 0.00095 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- <0.0005 <0.0005 0.00072 <0.0005 <0.0005 --- <0.0005 --- <0.0005 <0.0005 <0.0005 ND 1/21/09 0.0012 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- <0.0005 <0.0005 0.00069 <0.0005 <0.0005 --- <0.0005 --- <0.0005 <0.0005 <0.0005 ND 4/22/09 0.0011 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- <0.0005 <0.0005 0.00068 <0.0005 <0.0005 --- <0.0005 --- <0.0005 <0.0005 <0.0005 ND 7/29/09 0.0010 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- <0.0005 <0.0005 0.00058 <0.0005 <0.0005 --- <0.0005 --- <0.0005 <0.0005 <0.0005 <0.0005 ND 10/21/09 0.00069 <0.005 <0.0005 <0.0005 <0.0005 <0.1 <0.05 <0.005 <0.0005 <0.0005 --- <0.0005 <0.0005 0.00061 <0.0005 <0.0005 --- <0.0005 --- <0.0005 <0.0005 <0.0005 <0.0005 ND Stantec I:\Tidewater\TW Stockton(Parcel 2A-0415)\Tables\QMR Tables\201 0\4Q1 0\20101117-Parcel2A(Tables 4,5,6,7)Historical GW Tables 4Q10.xls 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