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Table 3: 9 tri OAARCADIS I b Historical Groundwater Monitoring and Analytical Data lormturel•M Former ARCO Service Station No.6100 TOC D. '•th asured Calk. • • •: D.O. comme(Its Well No. Sampled z ft-MSL) (feet) Th�ckness (fElev, pgfl-) (jiglt-) (pg/L) 61g[L) 1pg/L) (pg/L) (pg[Ll 040 WWI-) (pg/L) (PgfL) (pg/L) jpg1Q (mgfL) me feet) t-MSL Elevation Water o MW-8 12/22/03 289.77 58.75 0.00 231.02 - _ MW-8-� 03/15/04 289.77 58.80 0.00 230.97 - - - - MW-8 06/21/04 289.77 58.79 0.00 230.98 - - - - - MW-8 09/06/04 INA 2135-171 58.80 0.00 230.97 - - - - - - - - - - - - - - MW-8 12/20/04 289.77 58.78 0.00 230.99 - - - - - - - - - - - - - - MW-8 03/15/05 289.77 55.27 0.00 234.50 16,000 <50 <50 <50 6,100 <50 <2,000 -1100 -100 -100 -70,000 70 <50 0.2 MW-8 06/21/05 289.77 52.80 0.00 236.97 42,000 470 580 <50 19,000 290J -2,000 <50 <50 <50 -70,000 210 98 4.5 -_. ._- .. _ __.__.._. .. -1,000 ._ ._..... MW-8 09/19/05 289.77 53.90 0.00 235.87 50,000 36 58 <25 3,400 <25 <25 <25 29 -5,000 36 <25 1.3 Ill 12/19/05 289.77 57.03 0.00 232.74 240,000 290 1,400 560 24,000 <250 <10,000 <250 -250 -250 <50,000 <250 <250 2 MW-8 03/28/06 289.77 51.60 1 0.00 238.17 <25,000 <250 <250 <250 6W0 - - -250 <10,000�. -250 -250 -250 -150,000 -250 Q50 8.8 MW-8 06/26/06 NS2119.77 58.62 0.00 231.15 -- -- MW-8 09/18/06 289.77 54.70 0.00 235.07 3,900 8.3 <5.0 <5.0 360 11 -200 <5.0 <5.0 <5.0 <3,000 14 <5.0 5.1 Well purged dry MW-8 12/27/06 289.77 43.50 0.00 246.27 7,900 <5.0 <5.0 <5.0 260 6 230 <5.0 <5.0 <5.0 -3,000 17 5.5 MW-8 03/29/07 289.77 55.27 0.00 234.50 3,300 52 1 <5.0 <5.0 410 <5.0 <200 <5.0 <5.0 <5.0 <31000 9.8 2.2 MW-8 06/27/07 289.77 56.20 0.00 233.57 3,000 13 8.6 33 250 2 80 <1.0 <1.0 <1.0 -600 3.2 - 3.5 MW-8 09/26/07_ 289.77 54.43 0.00 235.34 5,SW 18 7 33 550 <2.5 <100 <2.5 <2.5 <2.5 -1,500 3.2 2.3 MW-8 12127/07 289.77 54.65 0.00 235.12 3,300 8.5 0.97 3.7 1 76 1.3 <20 -0.50 -0.50 IC50 <300 2.5 MW-8 I 03/26108 289.77 54.82 0.00 235.15 280 4.9 <2.5 <2.5 18 <2.5 <50 <2.5 <2.5 Q.5 -1,500 <2.5 4.88 MW-8 06/25/08 INA 289.77 - - - - - - - - - - - - - - - - - Large Vault Cover MW-8 09/30/08 DRY 289.77 MW-8 12/16/08 1 289.77 54.75 0.00 235.02 1 570 1.1 -0.50 <0.50 12 1 1.5 <10 <0.50 -0.50 <0.50 <300 3 - 3.68 MW-8 03/30/09 289.77 53.80 0.00 235.97 1,400 14 <2.5 15 34 <2.5 <50 <2.5 <2.5 -2.5 -1,500 <2.5 1.37 MW-8 06/29/09 289.77 57.48 Sheen 232.29 230 6.3 1.3 4.7 20 <0.50 <10 <0.50 <0.50 ' <0.50 <300 0.7 3.15 MW-8 09/28/09 DRY 289.77 - - - - ll 03/08/10 289.77 55.55 0.00 234.22 290 3.2 1 <0.50 3.0 17 <0.50 <10 <0.50 <0.50 -0.50 -300 <0.50 - 1.14 Well purged dry during sampling MW-8 09/20/10 VOL 1 289.77 58.50 0.00 231.27 Interpreted to be dry MW-8 03/17!11 VOL 289.77 58.60 0.00 231.17 - - - - - - - - - - - - - - MW-8 09/29/11 VOL 289.77 58.54 0.00 231.23 - - - - MW-8 03/12/12 DRY 289.77 MW-8 09/28/12 VOL 289.77 58.59 0.00 231.18 - - - - - MW-8 03/11/13 VOL 289.77 58.50 0.00 231.27 - - - MW-8 09/30/13 VOL 289.77 58.54 0.00 Interpreted to be dry MW-8 03/31/14 l VOL 289.77 58.46 0.00 - - - - - - Interpreted to be dry MW-8 09/24/14 VOL 289.77 57.96 0.00 - - - - Interpreted to be dry MW-8 02/27/15 289.77 55.61 0.00 234.16 480 -0.50 -0.50 4.30 -0.50 <0.50 <10 -0.50 -0.50 <0.50 <300 <0.50 f 2.15 MW-8 09/09/15 VOL 289.77 58.45 0.00 - - - - Interpreted to be dry MW-8 03/07/16 VOL 289.77 58.50 0.00 231.27 - - MW-8 09/29/16 DRY 289.77 - - - - - - - - - - - - - - - - - MW.8 02124/17 -289.77 54A2 0.00 235.35 - - - - - - - - - - - - - - MW-0 021127117 289.77 - - - <50 <0.50 <0.50 <0.50 <0.50 <0.50 <10 <0.50 <0.50 <0.50 -300 <0.50 - 7.62 MW-9 10/11/01 289.56 91.31 0.00 198.25 - - Ill 10/12/01 289.56 91.31 0.00 198.25 - MW-9 10/15/01 289.56 91.83 1 0.00 197.73 - - - - - - - - - - - - - - MW-9 10/22/01 289.56 91.84 0.00 197.72 - - - - - - - - - - - - - - MW-9 11/06/01 289.56 91.84 0.00 197.72 - - - MW-9 12117/01 1 289.56 91.82 0.00 197.74 - - - - - - - - - - - - - - MW-9 03/25/02 289.56 91.83 0.00 197.73 - - - - Ill 06/20/02 289.58 91.80 0.00 197.76 - Ill 09/16/02 289.56 91.82 0.00 197.74 - - - - - - - - - - - - - - MW-9 12122/02 289.56 91.77 0.00 197.79 - - - - - - - - - - - - - - MW-9 03/24/03 289.5691.91 0.00 197.65 - - - - - - - - - - - - - - MW-9 06116/03 289.56 91.82 0.00 197.84 MW-9 09/18/03 _ 289.56 91.83 0.00 197.73 - - - MW-9 12122/03 289.56 91.82 0.00 197.74 Table 2 and 3-Current and Historical GW Data 10 2017.xlsx 10 of 38