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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 />A Zone Wells - Area 2A/2B and Adjacent Areas (cont.) <br />MW-5 (cont.) ---12/6/04 23 1.9 <1.5 9 --- <0.10 <0.0015 <0.0015 0.0018 <0.0015 <br />---2/2/05 23 1.5 <0.80 9 --- <0.05 <0.001 <0.001 0.0011 <0.002 <br />--- 5/25/05 <br />--- 8/24/05 1.2 <0.80 9 --- <0.05 <0.0005 <0.0005 0.00055 <0.0015 <br />--- 11/17/05 1.1 <0.80 9 --- <0.05 <0.0005 <0.0005 0.00060 <0.0015 <br />--- 2/14/06 0.39 <0.40 9 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0015 <br />--- 5/15/06 0.2 <0.20 9 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0015 <br />--- 8/14/06 0.13 0.18 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0015 <br />--- 11/14/06 0.51 29 0.14 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0015 <br />--- 2/5/07 0.27 0.24 ---0.097 <0.0005 <0.0005 <0.0005 <0.0015 <br />--- 5/7/07 0.35 0.27 --- <0.05 0.002 <0.0005 <0.0005 <0.0015 <br />--- 7/2/07 0.24 0.26 --- <0.05 0.0017 <0.0005 <0.0005 <0.0015 <br />--- 10/8/07 0.37 0.27 ---0.072 36 <0.0005 <0.0005 <0.0005 <0.0015 <br />--- 1/21/08 0.38 0.26 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0015 <br />--- 4/21/08 0.24 0.46 43 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0015 <br />--- 7/21/08 <br />--- 10/20/08 <br />---1/19/09 <br />MW-6 33 7/24/90 47 23.00 --- ---0.018 7.4 3.1 12 <br />--- 10/18/96 91 0.24 --- <0.2 0.14 21 15 55 <br />--- 1/19/99 81.1 --- --- ---0.0595 (ND)*6.54 (6.09)* 9.08 (8.94)* 30.1 (30.1)* <br />--- 2/27/99 ---0.89 --- --- --- --- --- --- <br />--- 9/2/99 88.9 1.08 --- --- <0.0005 4.96 9.22 26 <br />--- 5/20/02 22 0.58 (<0.05)---0.474,5 (<0.3)<0.13 1.1 2.7 7.32 <br />--- 9/30/02 44 <0.1 (<0.1) ---2.4 (2.1)<0.02 2.2 5.1 14.6 <br />--- 12/5/02 160 <0.2 (<0.05) --- <0.05 (<0.05) <0.02 0.8 1.8 4.96 <br />--- 3/5/03 33 0.21 (0.091)--- <0.05 (<0.05) <0.02 1.6 3.9 9.87 <br />--- 5/5/03 32 1.0 (0.091)---0.17 4 (<0.05)<0.02 1.3 3.4 8.48 <br />---8/18/03 12 77 0.50 4 (0.17 4)0.41 B4 (0.25 B4)<0.05 1.4 10 25.1 <br />---11/11/03 12 78 0.714 (0.0724)---0.264 (0.1704)<0.05 0.37 9.7 25.61 <br />---02/17/04 12 42 0.89 (0.23)---0.304 (0.224)<0.025 1.7 4.2 11.1 <br />---6/2/04 12 46 3.4 18 (1.0 18)---3.2 (2.1)<0.05 1.4 6.6 17.9 <br />---9/7/04 12 <br />---12/6/04 23 35 0.18 --- <0.10 <0.02 1.3 4.4 12.1 <br />---2/2/05 23 23 0.21 --- <0.05 <0.02 0.65 3.3 8.06 <br />--- 5/25/05 <br />--- 8/24/05 20 0.21 ---0.19 24 <0.005 0.50 2.0 6.73 <br />--- 11/17/05 26 0.23 --- <0.05 <0.005 0.62 3.1 10.4 <br />--- 2/14/06 41 0.13 ---0.15 24 <0.025 0.72 5.3 14.1 <br />--- 5/15/06 22 0.23 --- <0.05 <0.005 0.51 2.3 6.11 <br />--- 8/14/06 20 0.19 --- <0.05 <0.015 0.50 2.8 6.60 <br />--- 11/14/06 20 0.14 --- <0.05 <0.009 0.36 2.5 6.33 <br />--- 2/5/07 14 <0.05 --- <0.05 <0.009 0.22 1.7 4.36 <br />--- 5/7/07 18 0.29 --- <0.05 <0.009 0.25 2.0 5.1 <br />--- 7/2/07 <br />Not sampled due to broken monument <br />Well not sampled 45 <br />Not Sampled Due to Transfer of Environmental Consultant Management Responsibilities <br />Well abandoned by Golden State Environmental <br />Well not sampled 45 <br />Well abandoned due to Unocal Excavation 51 <br />Not sampled due to broken monument <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 3 of 67