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TABLE 5 HISTORICAL GROUNDWATER ANALYTICAL DATA Waterloo Food Fuel 3032 East Waterloo Road Stockton, California Well ID Sample Date TPH as Gasoline hig/LI TPH as Diesel (WOW Volatile Organic Compounds by EPA Method 8260 Benzene (AM Toluene high) Ethyl- benzene (pg/L) Total Xylenes big/L) DIPE toga-) ETRE 1141/14 MTBE 8020 1P8/14 MTBE 8280 (milk) TAME Wan.) IBA (p9s.) TCE (va) POE leil/L) EDB (p1/1) 1,2.4)CA 0/911) Naphthalene 06194 968-29 11/22001 2.600 - 140 380 82 4E0 01.0 010 035 9.7 01.0 05.0 - - 01.0 01.0 _ 2/23/28.02 2.100 - 240 490 69 292 05.0 05.0 35 025 05.0 0125 _ _ 025 025 - 91182302 5E0 - 333 560 40 181 010 01.0 - 250 01.0 025 - - 00.5 05.5 _ 1/14/2003 2,100 - 250 400 36 194 01.0 01.0 - 110 01.0 010 _ _ 00.5 00.5 _ 5/28/2003 1.900 - 210 330 26 107 01.0 01.0 - 120 01.0 <10 - - 40.5 055 _ 9/23/2003 820 - 140 170 10 32 <1.0 01.0 - 54 01.0 010 - _ 00.5 <as - 3/23/2204 590 - 120 190 9.7 50 01.0 010 -- 60 5.2 010 - - 00.5 3.9 - 6/8/2804 5,600 - 1.600 2,930 110 593 01.0 01.0 - 140 01.0 010 - - 00.5 00.5 _ 9/182004 3.800 - 670 500 232 332 01.0 01.0 - 470 01.0 010 - - <0.5 24 - 12/14/2024 4,130 - 1.500 1.700 103 470 01.0 01.0 - 1,100 01.0 <10 - - 00.5 00.5 - 3/12/2005 1,930 - 3E0 870 as sea 01.0 01.0 - 150 3.1 010 - - 00.5 80.5 _ 6/5=05 2.600 - 383 1.300 110 620 01.0 01.0 - 1E0 22 010 - - 00.5 13 - 11/102005 4,600 - 1,100 1,200 130 780 01.0 01.0 - 9E0 35 010 - - 03.5 27 - 3/162006 4,000 - 493 980 220 1.710 01.0 01.0 - 77 23 010 - - <0,5 17 - 6/6/2006 5,000 - 910 733 130 810 01.0 01.0 - 1,500 2.9 010 - - 00.5 15 - 912212306 5,000 - 403 840 180 980 01.0 01.0 - 1.200 16 <10 - - 00.5 14 - 12/12/2036 6,000 _ 80.3 780 200 720 01.0 01.0 - 110 7.6 010 - - 00.5 11 - 3/20/2007 0,400 _ 920 800 azo 780 <1.0 18 - 1,100 17 010 - - 00.5 19 _ erzrzoca 7,300 - 420 620 200 484 <1.0 15 - 500 23 010 - _ 00,5 206 _ 9/2712007 6.300 - 410 520 183 550 010 10 - 568 22 010 _ _ 00.5 00.5 _ 2/12/2008 11.000 - 583 2.000 310 980 01.0 4.8 - 2.000 3.8 010 - - 00.5 00.5 _ 7/1412308 9,300 - 500 1,400 13 217 <1.0 01.0 - 1,400 130 010 - - 00.5 23 - 10/17/2008 3,200 - 300 703 58 335 <1.0 01.0 - 100 53 <10 - - 00.5 54 - 1/15/2009 3.200 - 460 900 76 410 <1.0 01.0 - 18 22 010 - - <05 6.4 - 3/512010 4,300 - 640 1,400 230 915 01.0 01.0 - 73 57 010 - - 03.5 21 - 9/9/2010 3,400 - 600 1,200 as 340 01.0 01.0 - 15 7.7 010 - - 03.5 8,4 - 3/20/2011 3,200 - 260 940 120 560 <1.0 01.0 - 4.5 3.7 010 - - 00,5 5.5 - 3/1/2012 2.900 - 180 482 82 330 01.0 01.0 - 4 2.3 010 - - 00.5 4.1 12/17/2012 3,600 - 450 1,030 160 780 <1 01 - 220 14 <10 - - 00.5 00.5 - 9/16/2313 4.050 - 280 700 140 570 01 01 - 33 01 010 - - 005 6.7 _ 4/252014 4,3W - 285 1,320 193 770 <1 01 - 180 8.9 010 - - 00.5 6.9 - 9/15/2016 24,600 - 4,740 4,880 568 2.410 01 01 - 495 01 <10 - - <1 84.4 - 3/7/2017 4.055 _ 299 821 110 505 <125 0125 _ <75 0125 01250 - _ <25 <25 _ 3/26/2020 - - - - - - - - - - - - - - - - _ smsrano - - - - - - - - - - - _ _ _ _ _ 3/302021 21.003 1.500 4,800 2030 470 1,800 05.0 18 - 370 05.0 <50 - _ _ 05,0 <50 9/172021 32.005 970 5,500 2,800 800 3,500 <5.0 15 - 130 05.0 <50 - - NA 05.0 78 APEX ENVINOTECH. INC SECCHD SEMI-ANNUAL 2021 Page o,3 206002905