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Table 4 <br />Groundwater Analytical Data - Total Petroleum Hydrocarbons and BTEX <br />South Shore Parcels - Parcel 2A and Adjacent Areas <br />West Weber Avenue and North Lincoln Street <br />Stockton, California <br />Depth Ethyl- <br />Sample (feet, Date TPHg TPHd TPHk TPHo Benzene Toluene benzene Xylenes <br />ID bgs) Sampled (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) <br />B Zone Wells - Areas 2A/2B And Adjacent Areas (cont.) <br />MW-51 (cont.) --- 11/16/06 0.28 1.5 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 30 <br />--- 2/8/07 0.25 1.8 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 <br />--- 5/8/07 61 29 1.6 ---0.15 31 0.013 <0.009 <0.009 <0.018 <br />--- 7/3/07 <br />--- 10/8/07 <br />--- 1/24/08 0.25 1.4 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 <br />--- 4/23/08 0.25 1.8 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 <br />--- 7/24/08 0.18 1.6 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 <br />--- 10/22/08 0.19 1.3 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 <br />--- 1/21/09 0.14 1.1 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 <br />--- 4/22/09 0.14 1.4 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 <br />--- 7/29/09 0.12 1.2 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0005 <br />--- 10/21/09 0.15 1.6 ---0.099 37 <0.0005 <0.0005 <0.0005 <0.0005 <br />--- 1/20/10 0.2 1.5 ---<0.05 <0.0005 <0.0005 <0.0005 <0.0005 <br />--- 4/21/10 0.079 1.1 ---0.055 37 <0.0005 <0.0005 <0.0005 <0.0005 <br />--- 7/21/10 <0.05 0.68 ---<0.05 <0.0005 <0.0005 <0.0005 <0.0005 <br />--- 10/19/10 0.10 1.1 ---<0.05 <0.0005 <0.0005 <0.0005 <0.0005 <br />---1/27/11 0.21 1.4 ---<0.05 <0.0005 <0.0005 <0.0005 <0.0005 <br />---4/21/11 0.15 1.3 ---<0.05 <0.0005 <0.0005 <0.0005 <0.0005 <br />--- 8/8/11 <0.05 0.82 ---<0.05 <0.0005 11 <0.0005 <0.0005 <0.0005 <br />--- 10/18/11 0.063 0.82 ---<0.05 <0.0005 <0.0005 <0.0005 <0.0005 <br />---1/20/12 0.066 0.75 ---<0.05 <0.0005 <0.0005 <0.0005 <0.0005 <br />MW-52 --- 5/26/05 <br />--- 8/24/05 <br />--- 11/14/05 <br />--- 2/16/06 <br />--- 5/15/06 <br />--- 8/14/06 <br />--- 11/14/06 <br />--- 2/5/07 <br />--- 5/7/07 <br />--- 7/3/07 <br />--- 10/8/07 <br />--- 1/21/08 <br />--- 4/21/08 <br />--- 7/21/08 <br />--- 10/20/08 <br />--- 1/19/09 <br />--- 4/20/09 <br />--- 7/27/09 <br />--- 10/19/09 <br />--- 1/18/10 <br />--- 4/19/10 <br />--- 7/19/10 <br />--- 10/18/10 <br />Not Sampled due to SPH <br />Not Sampled due to SPH <br />Not Sampled due to SPH <br />Not Sampled due to SPH <br />Not Sampled due to SPH <br />Not Sampled due to SPH <br />Not Sampled due to SPH <br />Not Sampled due to SPH <br />Not sampled - no access agreement <br />Not Sampled due to SPH <br />Not Sampled due to SPH <br />Not sampled due to SPH <br />Not sampled due to Sheen <br />Not Sampled due to SPH <br />Not Sampled due to Sheen <br />Not sampled due to Sheen <br />Not sampled - no access agreement <br />Not Sampled due to SPH <br />Not Sampled due to SPH <br />Not Sampled due to SPH <br />Not Sampled due to SPH <br />Not Sampled due to SPH <br />Not Sampled due to SPH <br />Not Sampled due to SPH <br />Not Sampled due to SPH <br />I:\Tidewater\TW Stockton (P2A)\Tables\QMR Tables\2012\1Q12\20120305-Parcel2A (Tables 4,5,6,7) Historical GW Tables 1Q12-CL.xlsx Page 44 of 67