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Table 2 Well Construction Details Stockton Terminals Technical Committee Port of Stockton Stockton,California Ground TOC/ Current Former Coordinates Surface PVC Well Well Screen Filter Pack Bentonite Well Well Date Latitude Longitude Elevation Elevation Depth Diameter Top Bottom Len th Top Top Comments I.D. I.D. Installed (feet,MSL) (feet,MSL) (feet,bgs) (feet,MSL) (inches) (feet,bgs) (feet,MSL) (feet,bgs) (feet,MSL) (feet) (feet,bgs) (feet,MSL) (feet,bgs) (feet,MSL) Grondwater Monitoring Wells ARCO Terminal Wells AR/MW-1A MW-lAIW-1 05/16/84 37.9438764 -121.3318959 3.10 2.63 20 -16.90 4 2 1.10 20 -16.90 18 *10393211 1 2.10 AR/MW-1B MW-1B 12/04/90 37.9438455 -121.3318842 2.79 2.65 35 -32.21 4 29.5 -26.71 34.5 -31.71 5 25.5 -22.71 AR/MW-1C MWAC 12/04/90 37.9438157 -121.3318812 2.89 2.78 75 -72.11 4 64.5 -61.61 74.5 -71.61 10 AR/MW-2A MW-2A1Wm2 05/16/84 37.9440437 A21.3322981 3.84 3.46 20 -16.16 4 1.5 2.34 20 -16.16 18.5 0.5 3.34 AR/MW-3A MW-3A/W-3 05/16/84 37.9438731 -121.3327575 2.52 2.02 20 -17.48 4 2 0.52 20 -17.48 18 1 1.52 AR/MW-4A MW-4AfW-4 05/16/84 -- -- -- -- 20 -- 4 2 -- 20 -- 180.5 -- AR/MW-5A MW-5AfW-5 05/16/84 37.9437424 -121.3333966 2.41 1.68 20 -17.59 4 2 0.41 20 -17.59 18 1 1.41 AR/MW-5B PZ-5B/P-5B 06/22/90 37.9437967 -121.3334070 2.40 2.02 39 -36.60 4 37 -34.60 39 -36.60 2 32 -29.60 31.5 -29.10 AR/MW-5C PZ-5C/P-5C 06/22/90 37.9437744 -121.3333990 2.32 2.04 60 -57.68 4 57 -54.68 59.5 -57.18 2.5 53 -50.68 52.5 -50.18 AR/MW-50 MW-50 04/30/02 37.9437438 -121.3333452 2.40 4.33 19.7 -17.30 2 3 -0.60 18 -15.60 15 2.5 -0.10 1.5 0.90 AR/MW-6A MW-6AfW-6 05/16/84 0.68 -0.21 20 -19.32 4 2 -1.32 20 -19.32 18 1.5 -0.82 1 -0.32 Monitoring Well Destroyed AR/MW-6AR 04/30/02 37.9440381 -121.3336611 2.83 4.82 18 -15.17 2 3 -0.17 18 -15.17 15 2.5 0.33 0.5 2.33 Replacement well for AR/MW-6A AR/MW-6B MW-6B 12/06/90 37.9440238 -121.3335674 2.45 2.26 49.5 -47.05 4 44 -41.55 49 -46.55 5 40 -37.55 39.5 -37.05 AR/MW-6C MW-6C 04/11/91 78.5 4 63 78 15 60 57 Steel Conductor Casing to 52 feet bgs HLA-7 HLA-7 04/17/90 - - 0.80 -- -- - -- -- -- -- - -- - -- -- -- Boring only-grouted to surface AR/MW-8A MW-8A/HLA-8 04/19/90 37.9435210 -121.3331867 2.52 2.09 23.5 -20.98 4 3 -0.48 23 -20.48 20 2.5 0.02 2 0.52 AR/MW-8B MW-8B 12/06/90 37.9435220 -121.3331543 2.35 2.17 35 -32.65 4 29.5 -27.15 34.5 -32.15 5 25 -22.65 24.5 -22.15 AR/MW-8C MW-8C 04/21/91 37.9435593 -121.3331778 2.66 2.52 81.5 -78.84 4 59.5 -56.84 79.5 -76.84 20 56 -53.34 54 -51.34 Steel Conductor Casing to 42 feet bgs AR/MW-9A MW-9A/HLA-9 04/19/90 37.9441086 -121.3327688 3.72 3.32 23.5 -19.78 4 3 0.72 23 -19.28 20 2.5 1.22 2 1.72 AR/MW-9B MW-9B 12/05/90 37.9441207 -121.3326115 4.62 4.41 45 -40.38 4 39.5 -34.88 44.5 -39.88 5 34 -29.38 33.5 -28.88 AR/MW-9C MW-9C 04/20/91 37.9441007 -121.3326251 4.56 4.01 78 -73.45 4 57.5 -52.95 77.5 -72.95 20 50 -45.45 48 -43.45 Steel Conductor Casingto 42 feet bgs AR/MW-10A MW-10A/HLA-10 04/19/90 37.9435371 -121.3325300 3.36 2.89 23.5 -20.14 4 3 0.36 23 -19.64 20 2.5 0.86 2 1.36 AR/MW-10B PZ-10B/P-10B 06/25/90 37.9435432 -121.3324773 3.12 2.87 38 -34.88 4 35.5 -32.38 37.5 -34.38 2 30 -26.88 29.5 -26.38 AR/MW-10C PZ-10C/P-10C 06/25/90 37.9435402 -121.3325042 3.21 2.98 59.5 -56.29 4 57 -53.79 59 -55.79 2 53 -49.79 52.5 -49.29 AR/MW-11A MW-11A/HLA-11 04/19/90 37.9435824 -121.3318003 2.62 2.34 19.5 -16.88 4 4 -1.38 19 -16.38 15 3 -0.38 2 0.62 AR/MW-11B MW-116 12/04/90 37.9435808 -121.3318377 2.35 2.28 35 -32.65 4 29.5 -27.15 34.5 -32.15 5 26 -23.65 25.5 -23.15 AR/MW-11C MW-11C 12/15/90 37.9435771 -121.3318758 2.30 2.17 75 -72.70 4 65 -62.70 74.5 -72.20 9.5 60 -57.70 59 -56.70 Steel Conductor Casingto 38 feet bgs AR/MW-12A MW-12A/HLA-12 04/19/90 37.9442002 -121.3320852 4.68 4.21 19.5 -14.82 4 4 0.68 19 -14.32 15 3 1.68 2 2.68 AR/MW-12B PZ-12B/P-12B 06/26/90 37.9441999 -121.3321091 4.70 4.40 38 -33.30 4 35 -30.30 37.5 -32.80 2.5 30 15.30 29.5 14.80 AR/MW-12C PZ-12C/P-12C 06/26/90 37.9441988 -121.3321414 4.64 4.48 58 -53.36 4 55.5 -50.86 58 -53.36 2.5 50 -45.36 49.5 -44.86 AR/MW-13A 01/27/04 37.9439690 -121.3331517 2.25 1.88 20 -17.75 4 2 0.25 20 -17.75 18 1.5 0.75 1 1.25 AR/MW-13B MW-13B 12/08/90 37.9438281 -121.3330397 2.31 2.24 40 -37.69 4 34.5 -32.19 39.5 -37.19 5 30 -27.69 29.5 -27.19 AR/MW-13C MW-13C 04/09/91 37.9438079 -121.3330359 2.44 2.10 75.5 -73.06 4 55 -52.56 75 -72.56 20 50 -47.56 48 -45.56 Steel Conductor Casing to 41 feet bgs AR/MW-14B MW-14B12/07/90 37.9438281 -121.3324825 3.24 2.84 40 -36.76 4 34.5 -31.26 39.5 -36.26 5 30 -26.76 29.5 -26.26 AR/MW-14C' MW-14C 12/20/90 37.9438982 -121.3324049 3.40 3.13 80.5 -77.11 4 70 -66.61 80 -76.61 10 65 -61.61 63 -59.61 Steel Conductor Casing to 41 feet bgs; AR/MW-14D' MW-14D 01/07/91 37.9439011 -121.3323869 3.40 2.88 111 -107.60 4 100.5 -97.10 110.5 -107.10 10 96 -92.60 94 -90.60 Steel Conductor Casing to 84 feet bgs AR/MW-18B 07/15/02 37.9440171 -121.3310116 5.45 4.96 35.5 -30.05 2 30 -24.55 35 -29.55 5 28 -22.55 26 -20.55 3 foot stove pipe well box AR/MW-18C 07/15/02 37.9439838 -121.3310330 5.48 4.69 70.5 -65.02 2 60 -54.52 70 -64.52 10 58 -52.52 56 -50.52 3 foot stove pipe well box AR.MW-21A 07/15/02 37.9442452 -121.3313276 6.02 7.12 18.5 -12.48 2 3 3.02 18 A 1.98 15 2.5 3.52 1.5 4.52 3 foot stove pipe well box AR/MW-21 B 07/16/02 37.9442419 -121.3314137 6.02 6.66 25.5 -19.48 2 10 -3.98 25 -18.98 15 8 -1.98 6 0.02 3 foot stove pipe well box AR/MW-21C 07/15/02 37.9442362 -121.3314697 6.02 7.15 70.5 -64.48 2 60 -53.98 70 -63.98 10 58 -51.98 56 -49.98 3 foot stove pipe well box AR/MW-22A 01/27/04 37.9440817 -121.3332402 2.46 2.05 20 -17.54 4 2 0.46 20 -17.54 18 1.5 0.96 1 1.46 AR/MW-23A 01/28/04 37.9436651 -121.3329704 2.50 2.12 20 -17.50 4 2 0.50 20 -17.50 18 1.5 1.00 1 1.50 AR/MW-24A 01/28/0437.9437868 -121.3330267 2.58 2.48 20 -17.42 4 2 0.58 20 -17.42 18 1.5 1.08 1 1.58 AR/PW-1' PW-1 01/09/91 1.22 35.5 6 25 35 10 20 19 3 fool stove pipe well box AR/PW-2' PW-2 01/10/91 1.29 75.5 4 60 75 15 Steel Conductor Casing to>40 feet bgs I:STTC\Tables\Well Construction Details.xls Page 1 of 7