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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 />C Zone Wells - Areas 2A/2B And Adjacent Areas <br />MW-54 --- 5/24/05 0.31 2.20 ---0.480 24 0.018 <0.0005 <0.0005 <0.0011 <br />--- 8/24/05 0.85 2.0 --- <0.05 0.009 0.00087 <0.0005 0.0029 <br />--- 11/16/05 1.0 1.4 --- <0.05 0.0097 0.0016 <0.0005 0.0041 <br />--- 2/15/06 0.93 1.3 --- <0.05 0.014 0.0017 <0.0005 0.0043 <br />--- 5/17/06 0.99 2.1 ---0.053 16 0.016 0.0015 <0.0005 0.0037 <br />--- 8/17/06 0.59 0.82 --- <0.05 0.0036 0.00082 <0.0005 0.0012 <br />--- 11/16/06 1.3 1.1 --- <0.05 0.0016 0.001 <0.0005 0.0048 <br />--- 2/9/07 1.1 2.2 --- <0.05 0.00086 0.00083 <0.0005 0.0044 <br />--- 5/9/07 0.44 1.8 ---0.057 31 0.00084 <0.0005 <0.0005 0.0012 <br />--- 7/5/07 0.75 2.1 ---0.064 37 0.00091 0.00088 <0.0005 0.00317 <br />--- 10/9/07 1.3 2.5 ---0.075 42 0.0031 0.0013 0.0013 0.0058 <br />--- 1/24/08 1.5 2.3 --- <0.05 0.0017 0.0015 0.00065 0.0059 <br />--- 4/23/08 0.70 2.2 ---0.093 37 0.00066 <0.0005 <0.0005 0.0019 <br />--- 7/24/08 0.92 2.5 ---0.16 37 0.0014 0.001 <0.0005 0.00412 <br />--- 10/23/08 1.8 2.6 --- <0.05 0.0016 0.0011 <0.0005 0.00463 <br />--- 1/22/09 1.1 1.9 ---0.19 31 0.0012 0.00066 <0.0005 0.00288 <br />--- 4/23/09 0.61 1.9 ---0.26 36 0.00069 0.00055 <0.0005 0.0014 <br />--- 7/30/09 0.61 1.8 --- <0.05 <0.0005 <0.0005 <0.0005 0.0011 <br />--- 10/21/09 0.9 2.6 ---0.2 37 0.00088 0.00052 <0.0005 0.00281 <br />--- 1/22/10 0.97 1.9 ---0.086 37 0.00099 26 <0.0005 <0.0005 0.00258 <br />--- 4/22/10 1.2 2.3 ---0.12 37 0.0024 0.00087 <0.0005 0.00357 <br />--- 7/22/10 1.7 2.8 ---0.14 37 0.0036 0.0014 <0.0005 0.005 <br />--- 10/21/10 1.3 2.2 ---<0.05 0.0029 0.00072 <0.0005 0.00418 <br />--- 1/27/11 1.2 2.0 ---0.11 42 0.0032 0.001 <0.0005 0.0035 <br />---4/21/11 1.2 2.5 ---<0.05 0.0018 0.0005 <0.0005 0.00345 <br />--- 7/20/11 1.5 2.1 ---0.08 37 0.0019 0.00065 <0.0005 0.00342 <br />--- 10/20/11 0.91 1.9 ---0.20 42 0.0015 0.00078 <0.0005 0.00272 <br />---1/20/12 1.3 1.8 ---<0.05 0.00093 <0.0005 <0.0005 0.0014 <br />MW-61 --- 10/22/08 0.14 0.68 ---0.18 36 <0.0005 <0.0005 <0.0005 0.0006 J <br />--- 1/23/09 0.072 0.40 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 <br />--- 4/23/09 0.055 0.37 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 <br />--- 7/29/09 <0.05 0.26 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0005 <br />--- 10/20/09 <0.05 0.86 41 ---0.45 36 <0.0005 11 <0.0005 <0.0005 0.00078 <br />--- 1/20/10 <0.05 0.29 41 ---0.25 36 0.00098 0.001 <0.0005 0.0014 <br />--- 4/20/10 <0.05 0.11 ---<0.05 <0.0005 <0.0005 <0.0005 <0.0005 <br />--- 7/20/10 <0.05 0.054 ---<0.05 <0.0005 <0.0005 <0.0005 <0.0005 <br />--- 10/19/10 <0.05 0.10 ---<0.05 <0.0005 <0.0005 <0.0005 <0.0005 <br />---1/25/11 <0.05 0.25 ---<0.05 <0.0005 <0.0005 <0.0005 <0.0005 <br />--- 4/19/11 <0.05 0.27 41 ---0.11 36 <0.0005 <0.0005 <0.0005 <0.0005 <br />--- 7/19/11 <0.05 0.32 ---0.12 36 <0.0005 <0.0005 <0.0005 <0.0005 <br />--- 10/18/11 <0.05 0.32 ---<0.05 <0.0005 <0.0005 <0.0005 <0.0005 <br />--- 1/19/12 <0.05 0.31 ---<0.05 <0.0005 11 <0.0005 <0.0005 <0.0005 <br />MW-62 --- 10/22/08 0.058 0.52 ---0.13 36 <0.0005 <0.0005 <0.0005 0.00054 J <br />--- 1/21/09 0.064 0.49 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 <br />--- 4/23/09 0.052 0.45 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 <br />--- 7/29/09 <0.05 0.46 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0005 <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 47 of 67