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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 t I Sampled (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) <br /> A Zone Wells-Area 2A/2B and Adjacent Areas(cont.) <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) --- 0.47 4,1(<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 0.504(0.17 4) 0.41 B4(0.25 B4) <0.05 1.4 10 25.1 <br /> --- 11/11/03'2 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 78(1.018) --- 3.2(2.1) <0.05 1.4 6.6 17.9 <br /> --- 9/7/04 12 Not Sampled Due to Transfer of Environmental Consultant Management Responsibilities <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 Not sampled due to broken monument <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 Well abandoned by Golden State Environmental <br /> MW-6R --- 4/20/09 Well not sampled 45 <br /> --- 7/28/09 Well not sampled 45 <br /> --- 10/19/09 Well not sampled 45 <br /> --- 1/18/10 Well not sampled 45 <br /> --- 4/19/10 Well not sampled 45 <br /> --- 7/19/10 Well abandoned <br /> MW-7 15 7/24/90 <0.02 <0.1 --- --- <0.0005 0.00073 <0.0005 0.002 <br /> --- 11/17/95 <0.05 0.13 --- --- <0.005 <0.005 <0.005 <0.005 <br /> 1/19/99 <0.05 0.45 --- --- <0.0005(ND)* <0.0005(ND)* <0.0005(ND)* <0.0005(ND)* <br /> --- 2/27/99 --- 0.44 --- --- --- --- --- --- <br /> 5/20/02 <0.05 0.45(<0.05) --- 0.424'5(<0.3) <0.005 <0.005 <0.005 <0.005 <br /> Stantec <br /> I:\Tidewater\TW Stockton(P2A)\Tables\QMR Tables\2011\3Q11\20110916-Parcel2A(Tables 4,5,6,7)Historical GW Tables 3Q11-CL.xlsx Page 4 of 69 <br />